Category Archives: Manufacturer

Horizontal Machining Center Vs. Vertical Machining Center: Is a VMC or an HMC Better?

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Every year, Modern Machine Shop does studies on the machine shop industry. One of the most helpful things they do is their Top Shops report, which does a detailed breakdown of the differences between what the fastest growing and most profitable machine shops are doing compared to the “average” machine shop.

 

Horizontal Machining Center Costs and Benefits

 

The top shops had higher gross sales per machine that average shop – $266,123 versus $152,000. That is huge. One of the major differences: top shops spent 10% of their gross revenues on equipment versus 2% for average shops.

 

One place that makes a difference: invest in horizontal machining centers. You probably know that a horizontal machining center (HMC) costs more than a vertical machining center (VMC) – but do you know that 61 percent of the “top shops” invest in HMCs – and an additional 41% of them also invest in multi-face tombstones?

 

More important: an HMC can be as productive as two or more VMCs. In fact an article written by Modern Machine Shop in 2013 called “Worth Three Machines” highlighted how one company used its HMC to do as much work as 3 VMCs.

 

Review of HMCs vs VMCs

 

HMCs cost a lot more than VMCs. How much more? The Association For Manufacturing Technology says the average HMC costs $375,000 vs. just $115,000 for the average VMC. That’s why 4 times as many VMCs are bought than HMCs every year.

 

If you look at just the cost of the machine, it might make sense to purchase a VMC, but if instead of looking at the price, you look at what you get for each dollar spent, the numbers look a little different.

 

Since very few companies pay cash for their machines, let’s look at monthly payments on HMCs Versus VMCs:

 

For an easy comparison, we’ll look at a 5-year lease on each machine, assuming your company has a good credit profile.

 

  • HMC average cost: $375,000. Average monthly lease payment: $7,050 per month
  • VMC average cost: $115,000. Average monthly lease payment: $2,250 per month
  • Difference in monthly payment: $4,800 per month

 

OK, so a HMC costs, on average, $4,800 a month more than a VMC. Yes, that’s a lot more, but the real question is:

 

Will the extra profits you reap by having that HMC be more than that $4,800 a month?

 

The key driver in machine tool utilization is spindle run time. This is where HMC’s really shine. The average spindle run time on an HMC is 85% versus 25% on a VMC. So what does that mean? That means, on average, less than a third of the labor required to make the same part.

 

Whether it makes sense to invest in the HMC depends on your business model, as obviously the savings in setup times from the HMC are more important on long runs than on short runs, but if you do any long run stuff at all, the savings are pretty apparent.

 

Figure the minimum cost of a machine operator after accounting for wages, benefits, labor burden, etc. has to be roughly $6,000 a month. Since your HMC can do the work of three VMCs, it would cost $18,000 in labor to do the same work on VMCs as you get done on HMC’s.

 

True Costs and Pricing of HMC VS VMC

 

OK, yes, the example above is a little bit simplified, but doing an apple to apples comparison, it gets us “close enough” to the info we need to make a decision. With everything else being equal:

 

An HMC costs $4,800 more per month to finance than a VMC.

Using a VMC will cost you $12,000 per month more in labor than an HMC.

All other things being equal, the HMC will save you $12,000-$4,800, or $7,200 a month.

 

Let’s repeat that: after taking into account the extra monthly cost of the HMC, it will still save you $7,200 a month in labor costs.

 

As an added bonus, more expensive equipment can typically be financed for longer period of time: on the average $375,000 you would be able to finance for 7 years instead of just 5, which would drop your payment from $7,050 per month to $5,450 per month.

 

In both cases, if you lease you should be able to write off the entire payment as an operating expense, with the option to buy the equipment at the end for 10% of the original price. Another option, is an equipment finance agreement, which costs a little bit more (roughly 8% higher payments) but you would own the equipment at the end for $1.

 

The advantage of leasing over buying – tax treatment. Prior to January 2014 Section 179 of the tax code gave you a huge upfront deduction (up to $500k) when purchasing but that number has been curtailed to just $25,000 for 2014 so leasing is starting to make more sense for most companies.

 

Which Is Better?

 

The choice of Horizontal Machining Center or Vertical Machining Center depends on your business model, and some other things, but hopefully this article has given you something to chew on while making this decision.

 

If you need more information about vertical machining center and horizontal machining center, I recommend that you can visit the website of CNC-TAKANG: www.takangcnc.com. The company provides a variety of machine tools for you. Learn more details, please do not hesitate to contact with CNC-TAKANG.

 

 

Article Source: https://www.smarterfinanceusa.com/blog/vmc-vs-hmc

When to Use Swing Check vs Wafer Check Valve

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When it comes to check valves, swing checks and wafer checks are actually similar in many ways. Both serve to block back flow from occurring in a pipe line. Both use a swinging disc to block and allow flow in one direction. The differences in the two valves may seem obvious when you look at them, but many users don’t realize the difference it might make in their application.

 

Wafer check valves get their name from their wafer thin design. These valves are sleek and made to fit in tight spaces between two flanges. There are no controls on this valve. The main component of the valve is a swinging disc in the center that opens in one direction and closes if liquids flow back the other direction.

 

Swing check valves, as the name implies, also uses a swinging disc to allow or block flow. The difference between the two is in the body design. Swing check valves are not designed for extremely tight spaces like the wafer check. They have molded bodies around the area where the disc opens up. This is the most important difference between the two types of valve.

 

While at first glance this may just seem like a space issue, the presence of a valve body as opposed to the bare bones wafer check actually makes a big difference in the functionality of the valve. Because wafer check valves are flanged in place, there isn’t much room for the disc to open in the pipe line. That means flow is often restricted with a wafer check valve.

 

Swing check valves on the other hand, have a molded body that creates room for the disc to swing open fully, thus allowing full flow. As you can imagine, this is immensely important if your application requires full flow. For this reason, we recommend wafer check valves for applications where flow is not an issue, and swing check valves when a full port valve is required.

 

You can easily find a reputed and well-known provider of these different types of valves on the internet such as the NICO VALVES CORP. This company always offers the best quality wafer check valves and other valves to you. Learn more information about valves, try to check out NICO’s website here: www.ni-co.com

 

 

Article Source: https://www.commercial-industrial-supply.com/resource-center/use-swing-check-vs-wafer-check-valve/

How to Use a Deburring Tool

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Deburring tools are incredibly useful for rounding out rough edges on almost anything. You can use a deburring tool to even out the edges of a PVC pipe or to get rid of rough spots on the edge of a piece of wood. Using a deburring tool is pretty easy, but it helps to know about the process before you get started. You might also find it helpful to know what to consider when choosing your tool and what you should do to keep yourself safe.

 

Method 1 – Using the Deburring Tool

 

  1. Secure your attachment. After you have selected the appropriate attachment for the job, attach the piece to your deburring tool. You may need to consult your user’s manual to determine how to attach the piece.
  • Make sure that the attachment is locked securely in place before you switch it on.

 

  1. Make sure that the object you are deburring is locked in place. While some larger objects might stay put on their own, it will be difficult (and unsafe) to deburr a smaller item that is not secured in place. For example, a piece of furniture may not need to be secured, but a piece of wood or a pipe will need to be secured in place.
  • Try using a vice to secure smaller items and prevent them from moving around as you deburr them.

 

  1. Turn on the deburring tool. Next, pick up your deburring tool and hold it firmly by the handle. Then, switch on your deburring tool when you are ready to use it.
  • You may want to start out by using the lowest setting and then increase the speed if necessary.

 

  1. Place the deburring tool against the edge. Hold the tool so that it is right up against the edge you wish to deburr. For example, if you are deburring the edge of a piece of wood, then places the tool right up against the edge.
  • You do not need to press hard to deburr the item, just ensure that the tool makes contact with the edge of the object you are deburring.

 

  1. Go over the area two or three times. To ensure that the edge is completely deburred, it may be necessary to go over it with the deburring tool two or three times. Start at one end and move all the way to the end, or select a starting point if you are deburring a circular item.
  • If you are deburring a pipe or other circular area, then you may just have to let the deburring tool rotate two or three times.
  • If you are deburring an edge, then you will need to drag the tool back and forth across the area two or three times.

 

  1. Check the edges to ensure all burrs have been removed. After you have finished deburring the item, remove the tool and turn it off. Then, check the edges of the area you just deburred to ensure that you got all of the larger burrs. If there are still some burrs left, then you can always go over it again.
  • You can also sand the edges of the area you just deburred to ensure that it is nice and smooth. Use a fine grit sandpaper to sand away any minor imperfections.

 

Method 2 – Choosing the Right Tool

  1. Select the right size. Deburring tools are available in handheld sizes as well as larger power tool sizes. The size you need will depend on what you need to deburr. Choose the right tool for your job to get the best results.
  • Hand deburring tools are better for small, precise deburring jobs.
  • Power deburring tools work better for larger jobs.

 

  1. Choose the right type of attachment. There are many different types of deburring tool attachments to choose from. If your deburring tool came with a selection of attachments, then you may want to consult your user’s guide to determine which attachment is the most appropriate for your job.
  • Some attachments are better for certain materials, such as metal or plastic, while other attachments are better for certain shapes, such as circular items.

 

  1. Match the deburring attachment with the inner or outer diameter. If you are going to be deburring a pipe, then you may want to use a deburring attachment that will go around the pipe edge or fit inside of the pipe. If you have this type of attachment, then match it up with the pipe to see if the diameter is correct.
  • If you do not have these types of attachment, then you can still deburr the pipe. You will just need to use a different attachment work around the edges of the pipe.

 

Method 3 – Staying Safe

  1. Protect your eyes with safety goggles. When deburring a surface, pieces of wood, metal shavings or plastic will come off of the surface and they may fly towards your face. To protect your eyes from these shavings, make sure that you wear some safety goggles while you are using the deburring tool.
  • Try to get a pair of safety goggles that will protect your eyes on all sides, not just from the front.

 

  1. Wear gloves to protect your hands. Like most power tools, using a deburring tool can be dangerous. To protect your hands and fingers from injury, make sure that you wear some leather or canvas work gloves. You can find these in any hardware store.

 

  1. Consider wearing a face mask. If you will be deburring an item with a fine attachment and you expect to kick up a lot of dust, then you might also want to wear a face mask to protect yourself from the dust. Otherwise, you may end up breathing in some of the dust and this can be harmful to your health.

 

Video of Hand Deburring Tools

If you have any interest in learning more information about deburring tools, try to watch the video below:

A Reliable Deburring Tools Manufacturer

If you ask “Where can find high quality deburring tools?” I will tell you that Maxclaw Tools Co., Ltd. is the best supplier for you.

 

Maxclaw is the professional manufacturer of specializing in kinds of tube tools. It also provides a variety of hand deburring tools for you to select. If you are looking for the ideal deburring tools, do not miss Maxclaw, you will find the most suitable tools at its website.

 

 

Article Source: https://www.wikihow.com/Use-a-Deburring-Tool

Does Automotive Wheel Machining Benefit From a Purpose-Built Wheel Machine?

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Victor Taichung Machinery Works, based in Taiwan, makes a wide variety of machine tools, including turning machines and multi-purpose milling machines, but an interesting specialty application of the company are wheel machines.

 

In the video above, we speak with Wayne Hsueh, director of overseas marketing division at Victor Taichung Machinery Works about the difference between wheel machines and general purpose multi-axis machine tools.

 

“The car wheel machine is for clamping the part, because for the part to be clamped, you need a special chuck,” Hsueh explained.

 

“Usually for special purpose machines, the chuck is the key component to reduce setup time and for clamping efficiency. Wheel chips are also different from steel chips, so even a chip conveyor and the protection of ball screws are also somewhat different. For special purpose machines, you should pay attention to the kind of part you’re making, what kinds of chips are produced, what kind of coolant you use and how you dispose of it.”

 

Hsueh explains that Victor Taichung’s special-purpose wheel machines are actually modified general-purpose machines – this saves costs for the company as well as its customers.

 

“We can mass produce all the machine parts, as 80 percent of parts are compatible (between machines),” Hsueh said. “We have some customers that want special-purpose machines only and we pay a lot of attention to them. If we increase production of our general-purpose machine, the special-purpose machine would also become cheaper. We like it cheaper for mass production. That’s why we have a special machine for wheels, but wheel machines are heavy duty for heavy cutting. You need a very reliable machine base and fortunately at Victor Taichung Machines, we build the machines this way from the beginning.”

 

For more information, visit the Victor Taichung Machinery Works website.

 

 

Article Source: https://www.engineering.com/AdvancedManufacturing/ArticleID/15902/Does-Automotive-Wheel-Machining-Benefit-From-a-Purpose-Built-Wheel-Machine.aspx

 

How to Overhaul A Bottom Bracket

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How to disassemble, re-grease, reassemble and adjust a cup and cone bottom bracket.

 

Today we’ll learn how to overhaul and re-grease an adjustable bike bracket. There is something you need to prepare.

 

  • To remove the cranks you’ll need a crank puller, a 17mm open end wrench and a large adjustable wrench.
  • To overhaul the bottom bracket you’ll need a bottom bracket wrench or a pin spanner, a hooked lock ring wrench, and a 36mm wrench.
  • For re-greasing the bearings you’ll need some cleaning solvent and waterproof grease, a rag, a toothbrush and a small container to clean the bearing cages.

 

Disassemble

 

Begin by removing the cranks. Once the cranks are removed, loosen and remove the lock ring on the non-drive or left side of the bike by turning counter-clockwise. Once the locking is removed you should be able to easily loosen and un-thread the bearing race using either a pin spanner or a bicycle bracket wrench.

 

Now pull the spindle and both bearing cages out of the frame. It’s important to remember which way the spindle came out, as they are directional. The drive side usually has a longer distance from the bearing race to the end of the threads. Wipe off the bearing cages, drop them into the solvent, and let them soak while you use your rag to clean the spindle and both outer bearing races.

 

Tighten the drive-side bearing race by turning it counter-clockwise with your 36mm wrench. Unless you are replacing the bottom bracket, there is no need to remove it.

 

Inspect

 

Shine a flashlight into your bike bracket shell to inspect the bearing race for pitting and wear. Inspect your other bearing race and then carefully inspect the spindle. Most wear occurs on the spindle’s bearing races. If you see pitting here you should take it to your local bike shop for a replacement.

 

Clean

 

Now clean both bearing cages with a toothbrush and solvent, and then set them aside to air-dry. These should also be replaced if they are worn or have bent cages.

 

Grease

 

Apply a layer of grease on both bearing races and cages. A grease gun makes it easy to squirt grease inside the gaps between the bearings. Then place the bearing cages into both races. The rounded side of the cage should be facing down into the bearing race. Seal them in with another layer of grease.

 

Reassemble

 

Now insert the spindle the same way you removed it. Wipe off any excess grease that comes out on the spindle. Grease the threads inside the bottom bracket shell, and then slide the outer race and bearing cage onto the spindle. Thread it on all the way clockwise but don’t tighten it. Again you’ll need to wipe off excess grease.

 

Adjust

 

Thread on the lock ring finger-tight. Before adjusting the bottom bracket, first install the drive-side crank arm and tighten it as shown in the crank installation tutorial. This will help us make a proper adjustment. Now hold the inner race firmly with your wrench or spanner and tighten the lock ring. When properly adjusted the spindle should spin smoothly. If it doesn’t, you’ll have to loosen the lock ring, back off the inner race a little bit, and then tighten it again.

 

Check for play by placing the crank arm close the frame and pushing and pulling it against the frame. There should be no movement. If it feels loose, you’ll have to loosen the lock ring, tighten the inner race a little bit, and then tighten the lock ring again. When the adjustment is correct, install and tightens the left crank arm and you’re done!

 

Now, have you known how to overhaul a bike bracket? If you are interested in learning more information about bottom bracket and other bicycle parts, try to check out the website of G-MA Engineering Co., Ltd.: www.aerozinebike.com. There are kinds of high quality bike components at G-MA. Visit its product pages to find you need.

 

 

Article Source: http://bicycletutor.com/bottom-bracket/

How to Choose a Youth Bow

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Archery is a sport for children to learn and enjoy. Even the youngest of children can start off with archery toys, one with safe rubber or suction cup-tipped arrows. By the time young archers reach the age of 8 or so, it is important to select a bow of the right size and type.

 

Step 1

Determine whether your child is right-eye or left-eye dominant. Have your child stand facing toward a wall that has some kind of feature on it–a clock, a picture, etc. Tell your child to point to the clock, picture, etc., and then close his right eye. If his finger stays in the same place, he is left-eye dominant and you should choose a left-handed bow. If his finger appears to “jump” so it is now pointing somewhere to the right of the object, he is right-eye dominant, and will need a right-handed bow.

 

Step 2

Measure your child’s entire arm span to help you determine what draw length bow you should purchase. Draw length is the measure of how far the bow can be drawn back. Have her spread her arms out with her palms facing forwards. Run a tape measure from the tip of one middle finger to the other. Once you have this measurement, divide it by 2.5. This should give you the correct draw length for the bow you’ll be purchasing.

 

Step 3

Select a bow of the proper length for your child. Unlike draw length, this measurement refers to the bow itself, how many inches it measures from top to bottom. Youth bows tend to measure between 31 and 41 inches in length, but you should have your child try out several bows at different lengths to see which one is most comfortable.

 

Step 4

Estimate the draw weight your child will need in a bow. This refers to the pounds of pressure that will need to be exerted to draw a bow back to its fullest extension. A child weighing between 50 and 70 pounds will usually be able to pull a draw weight of 10 to 15 pounds. For a child weighing 70 to 100 pounds, a draw weight between 15 and 25 pounds would be appropriate, and a draw weight of 25 to 35 or 40 pounds should work for a child weighing between 100 and 130 pounds. Children between 130 and 150 pounds ought to be able to handle draw weights between 40 and 50 pounds.

 

Step 5

Take into account budgetary considerations. If your child is new to the sport of archery and this is something you’re just trying out to see if he likes it, select one of the lower-priced models. You can usually find some type of beginner bow in the $40 to $50 range. If your child really enjoys archery, however, and wants to get into competition or bow hunting, you may wish to select a model specially made for his needs and interests costing anywhere from $100 to $400 or even more. Be sure to take into account that your child is still growing, though. You may not want to mortgage the house to purchase archery equipment that he is likely to outgrow in a year or so.

 

Man Kung, the company is dedicated to the design and manufacture of a wide range of crossbows, archery bows and related products. You also can find archery toys on their website. If you are looking for high quality archery products, please do not miss Man Kung, it will be the best supplier for you.

 

More details, check out here: www.archery-manufacturer.com

 

 

Article Source: https://www.livestrong.com/article/28232-choose-youth-bow/

When Is Ultrasonic Polishing Equipment Justified?

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Ultrasonic polishing is ideal and justifiable when work on small to very small details is required.

 

Manual polishing is a very tedious process, and in particular very small intricate detail work requires additional effort and patience. Ultrasonic lapping machines, available now for quite some time, have been improved in recent years to effectively replace certain time-consuming and costly small detail hand finishing work.

 

Ultrasonic Unit Features

By comparison to conventional die profilers, as well as air-powered lapping machines that may have a stroke length of up to ¼ inch, the reciprocating action of an ultrasonic unit ranges only from .00004 to .00012 inches. However, the extremely fast reciprocating tool motion of 21,000 and up to 25,000 strokes per second provides the extra productivity and gives the polisher complete fingertip control when finishing even the most intricate ridges, slots and details.

 

Ultrasonic systems usually consist of an electronic power module (110 or 220 volt) with a slender electric cord that powers the lightweight and easy to manipulate small, ultrasonic handpiece. Commonly, an automatic power feed system in the module adjusts the frequency required to accommodate the various individual abrasive tools that are installed for the finishing process. The systems are equipped with numerous clamps that will accommodate tools ranging from small diamond files to conventional type polishing stones and/or ceramic stones and laps.

 

As with all other power tools, great care and attention should be given when working with ultrasonic machines. Because of the ultra-fast motion, tools that are overly aggressive (especially coarse diamond files, etc.) should never be used. Surfaces that must be flawless can easily be scratched and made wavy or damaged.

 

On the other hand, dense/hard, fine grit ceramic or vitrified abrasive polishing stones or laps made of brass and cast iron when used with premium diamond compound, permit the beginner to acquire a better understanding of the fast cutting powers these ultrasonic systems offer. Note: Only the most experienced operator should use diamond files or diamond stones for ultrasonic polishing.

 

Ultrasonic Applications

We need to stay objective and remind ourselves that ultrasonic polishing is not for everyone. Frequently, ultrasonic systems are perceived to take care of all polishing problems. This is not so. Ultrasonic polishing is not a cure-all for every mold and die shop that does in-house polishing. There are many polishing professionals and/or mold shops—doing mostly mid-size to large work—that may not require an ultrasonic system. In many instances, the units are simply not practical for mid-size to large type work and ultrasonic systems are not recommended to be used on larger details and surfaces exceeding a 3/8-inch square.

 

Nevertheless, ultrasonic finishing has its place in a polishing environment and it is not overstated to say that in some instances the cost of one ultrasonic system may be recouped by polishing three to four multiple cavity/core molds. For instance, an experienced individual, when working with an ultrasonic polishing machine on very small details, may reduce finishing time by as much as 40 percent and up to 65 percent.

 

In the past, there have been several good, but very expensive ultrasonic systems on the market. The name of one system may differ from the other, yet they all practically evolved from one source. However, several new models, which have been recently developed and have proved to be highly effective, as well as very affordable for even the smallest mold shop or polishing house, are now available in the marketplace.

 

Ultrasonic Advantages

Ultrasonic units with super-fast, very short strokes, provide virtual unrestricted fingertip control. By comparison, regular reciprocating tools—such as air-driven or electric flexible shaft-operated die profilers—are more restrictive in movement and less flexible to handle.

 

Nevertheless, die profilers and/or various other filing machines are great for medium to large mold details and when used at a comfortable speed range and proper stroke lengths they will provide excellent finishing capabilities.

 

Ultrasonic polishing is ideal and justifiable when work on small to very small details is required. It is safe to say that the smaller, more intricate or precise the finishing work needs to be, and/or the harder the materials are which require finishing, the more likely it is that an ultrasonic unit will improve polishing time. Subsequently, complicated heat-treated molds and dies, carbide dies or inserts and detailed punches with fine edges and very narrow slots machined by EDM are perfect for using ultrasonic polishing systems.

 

It should be mentioned here that there are other advantages that make certain ultrasonic systems a practical purchase. Meaning, various models offer dual operating capabilities where the electronic power module not only has the ability to drive the ultrasonic handpiece, but also regulate the speed and rotational direction for a variety of rotary and/or reciprocating hand tools. Having these secondary functions presents additional cost savings over single function ultrasonic units as they permit a full range of filing/reciprocating capabilities as well as rotational grinding/polishing using mounted points, burs, polishing brushes and felt bobs. Furthermore, since the rotary or reciprocating hand tools are powered with internal DC motors, the thin electrical cord provides more freedom of movement when compared to flexible shaft powered tools.

 

Summary

When selecting a supplier for this type of equipment it is most prudent to purchase from a respectable company that has been around for many years, offers good customer service and has some experience in ultrasonic polishing, which can be passed on to the customer, even via the telephone.

 

I think Best Diamond Industrial Co., Ltd. will be the most excellent choice. Besdia supplies high quality ultrasonic lapping machine and much more tools for you. Learn more information about Besida, welcome to check out the website here: www.besdia.com

 

 

Article Source: https://www.moldmakingtechnology.com/careers/when-is-ultrasonic-polishing-equipment-justified

The Best Baseball Practice Nets Supplier in Taiwan – Holy Hoe Enterprise Co., Ltd.

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Holyhoe practice net is ideal for use for baseball practice. Lightweight, easy to set up, and with incredible versatility.

 

If you are a baseball pitcher and want to make your college or school team, or even the major leagues, you have to practice more than you can possibly imagine. While there are many ways of practicing, the most effective way you can consider is by having your own pitching net.

 

Through this, you will be able to develop your skills at your own pace without interference from anyone. Baseball pitching nets have been around for quite a long time. They are mostly used for practice, with some versatile enough for soccer and basketballs. Since the primary task of this equipment is to help with training, it’s important that you go for premium quality ones. After all, you want something that can last for ages and transform you into an elite player within minutes.

 

Here, I’m going to recommend you a baseball practice net manufacturer – Holy Hoe Enterprise Co., Ltd.

 

The Sport Nets Manufacturer in Taiwan

 

Holyhoe, a company with more than 40 year professional experience, provides the complete solutions for the sports nets and accessories. Holyhoe has been supplying high quality products to the international customers around the globe.

 

Holyhoe sport nets include tennis nets, volleyball nets, badminton nets, soccer nets, basketball nets, baseball practice nets, golf practice nets, beach volleyball sets and much more.

 

In this article, I only introduce baseball practice nets. Other else sport nets, please try to check out Holyhoe’s website.

 

High Quality Baseball Practice Nets from Holyhoe

 

Holyhoe offers four types of baseball practice nets for you to select.

 

Model:

 

  • BR-2001 model – protective screen, regular style baseball practice net.

 

  • BR-2002 model – target style for pitcher baseball practice net, with a mouth and a movable net, pitching target practice screen net.

 

  • BR-2003 model – target style with sock net for hitter, baseball batting practice net.

 

  • BR-2004 model – pitcher style L screen baseball practice net, pitcher safety L screen nets.

 

Features:

 

Holyhoe’s baseball practice nets are easy to set up. Suitable for indoor and outdoor using. With anti-UV and water-resistant, all weather designed.

 

Summary

 

There are a lot of things to consider before you purchase a baseball pitching net.

 

  • Strength of the frame: as this promotes stability as well as helps in high-intensity training.
  • Versatility
  • Quality of the net

 

Price does not matter much since most of these products are not costly. If you are interested in learning more information about sport nets, try to check out the product pages of Holyhoe. You’ll find the ideal products on their website.

 

Holy Hoe Enterprise Co., Ltd.

No.18, Paitang Lane, Tatsun Hsiang, Changhua Hsien, Taiwan 51543

TEL: 886-4-8526116 / 7

FAX: 886-4-8526118

E-mail: holyhoe@ms24.hinet.net / holyhoe@holyhoe.com

 

Article Source: https://ahjoo.com/top-best-pitching-nets-reviews/

What are Aramid Fiber and The Best Aramid Fabrics Manufacturer?

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Aramid fibers are man-made high-performance fibers, with molecules that are characterized by relatively rigid polymer chains. These molecules are linked by strong hydrogen bonds that transfer mechanical stress very efficiently, making it possible to use chains of relatively low molecular weight.

 

The term “aramid” is short for “aromatic polyamide”. Aromatic polyamides were first applied commercially as meta-aramid fibers in the early 1960s, with para-aramid fibers being developed in the 1960s and 1970s.

 

Aramid fibers share some general characteristics that distinguish them from other synthetic fibers:

 

  • High strength
  • Good resistance to abrasion
  • Good resistance to organic solvents
  • Non-conductive
  • No melting point
  • Low flammability
  • Good fabric integrity at elevated temperatures

 

These unique characteristics derive from the combination of having stiff polymer molecules with a strong crystal orientation as well as close interaction between the polymer chains due to the hydrogen bonds.

 

Advantages of Aramid Fiber

Aramid main advantages are high strength and low weight. Like graphite, it has a slightly negative axial coefficient of thermal expansion, which means aramid laminates can be made thermally stable in dimensions. Unlike graphite, it is very resistant to impact and abrasion damage. It can be made waterproof when combined with other materials like epoxy. It can be used as a composite with rubber retaining its flexibility. High tensile modulus and low breakage elongation combined with very good resistance to chemicals make it the right choice for different composite structural parts in various applications.

 

Aramid Fiber Disadvantages

On the other side, aramid has a few disadvantages. The fibers absorb moisture, so aramid composites are more sensitive to the environment than glass or graphite composites. For this reason, it must be combined with moisture resistant materials like epoxy systems. Compressive properties are relatively poor too. Consequently, aramid is not used in bridge building or wherever this kind of resistance is needed. Also, aramid fibers are difficult to cut and to grind without special equipment (e.g. special scissors for cutting, special drill bits). Finally, they suffer some corrosion and are degraded by UV light. For this reason they must be properly coated.

 

Aramid Fabrics Manufacturing Expert

If you need more information about aramid fabrics, I recommend that you can visit the website of TEI. Taiwan Electric Insulator was established in 1978 as a manufacturer of aramid fabrics, including aramid fiber fabric, ballistic aramid fabric and colored aramid fabric.

 

The aramid fabric features flame resistance, outstanding shock absorption, and superb engineering benefits to all manners of manufacturing and design in the composite industry. To go with the ever-changing requirements, TEI is dedicated to development and innovation of aramid fabric to meet the highest level of customers’ satisfactions. Find more details about aramid fabric, please do not hesitate to send inquiry to TEI.

 

Article Source:

https://www.teijinaramid.com/what-is-aramid/

http://www.aramid.eu/advantages—disadvantages.html

Beginners Guide To The Impact Wrench

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If you’ve ever experienced trying to loosen a large, fretted or corroded fixing, then you’ll appreciate what I’m about to say. Often working in tight spaces or at awkward angles, nuts and bolts can be extremely difficult and time consuming to fit or remove. Skinned knuckles, broken tools and jobs taking hours longer than you’d planned, all contribute to the frustration that nuts and bolts cause on a daily basis for people across the world. Even experienced professionals, such as fitters and mechanics, will experience these problems on a regular basis.

 

The solution? Well, there are a number of factors to consider, but the most important is the force you apply to the fixing. Without adequate force, the fixing will either be under tightened (under torqued) or simply won’t come undone. Secondly, and this is particularly important for busy professionals, the time taken to fit or remove a fixing can be painstakingly long if it is in a hard to reach position. Similarly, the time taken up by repetitive jobs, like removing and refitting vehicle wheels, can really add up over the course of a day and eat into your profit margin or your family’s patience.

 

Using an impact wrench solves both these problems. It is capable of delivering a much larger force than you can apply by hand, without additional leverage, and it greatly speeds up the tightening and loosening of fixings, especially those that are hard to reach. So, if you can relate to what I said earlier, you’ll want to read on.

 

What Is An Impact Wrench And How Does It Work?

An impact wrench is used to aid the tightening and loosening of nuts and bolts by reducing the effort required by the user and increasing the speed at which fixings can be tightened or loosened. There are a variety of different types on the market but they all work in fundamentally the same way. Essentially, they apply a rotational force (or torque) in short bursts (or impacts). They are driven by a motor which is powered by air, mains electricity, or battery (usually referred to as a “cordless impact wrench”).

 

Because the force is applied in short bursts, the user is able to apply a much larger torque to the fixing than they would use a regular wrench; sometimes with only one hand. This greatly reduces the effort required by the user, which results in less fatigue and fewer injuries or strains. The time required to complete a task is also reduced meaning that the user can finish the job faster and, in the case of a business, generate greater revenue and profit.

 

Which Type Is Right For Me?

Of the 3 different types of impact wrench, air, electric and cordless, each has its advantages over the others. Originally, only the air impact wrench was available and used mainly by professional and race mechanics to quickly remove and refit wheel nuts (lug nuts). Depending on the model, air tools are powerful, fast and robust making them ideal for use in a professional environment. However, they do require a large volume, high pressure air supply to operate and regular maintenance, which means they aren’t really suitable for infrequent or home use. And, as they’re attached to the compressed air supply by an airline, it can be difficult to move them around a workspace.

 

The corded electric impact wrench is also powerful and fast (again, depending on the model) but is less robust than the equivalent air tool. It too is attached by a cord making it difficult to move around a workspace and, of course, it cannot be used in the absence of a mains electricity supply. However, it can be less expensive than an air or cordless impact wrench, making it an attractive choice for home use.

 

Perhaps the most sought after, particularly in recent years as the technology has improved, and are cordless (battery powered) impact wrenches. The more expensive, higher voltage units deliver performance approaching that of an equivalent air tool but without the additional infrastructure. They are also completely portable and the absence of a cord means they can be moved easily around a workspace and used in hard to access areas. Unfortunately, they are often the most expensive and can be relatively heavy due to the weight of the battery packs.

 

At present, air impact wrenches remain the most popular with professional mechanics. But, as technology continues to improve, the cordless impact wrench will become increasingly popular, less expensive, and ultimately dominate the market.

 

Kspark International Ltd. is the company of specializing in a variety of impact wrenches including heavy duty impact wrench series, super heavy duty impact wrench series and angle heavy duty impact wrenches. If you have any interest in impact wrench, try to check out Kspark’s website to see the full specification of each product and find the ideal one you need. More details, click here: www.kspark-spraygun.com

 

 

Article Source: http://impact-wrench-reviews.com/articles/beginners-guide-to-the-impact-wrench/