Category Archives: Industrial Supply

Which Pump Will Work With Your Portable Hydraulic System?

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Portable hydraulic pumps are taking over more tasks that would otherwise require dangerous and strenuous human labour. These time and back-saving devices make significantly lighter work of a plethora of plant maintenance chores such as lifting equipment, tightening and loosening bolts, spreading flanges, and cutting corroded nuts. As powerful as these tools are, using the right pump is crucial to ensuring safety and efficiency on the job.

 

Because of the vast spectrum of capabilities and functions of portable hydraulic pumps, several factors should be taken into account when determining the appropriate power source. Hydraulic tool users can choose from three primary power sources: hand, electric, or air. Each method offers unique benefits relative to a wide range of situations.

 

Hand Pumps

A hydraulic hand-powered pump is usually the simplest and most economical type of pump to use. It is ideal for sporadic use of small or medium-sized hydraulic tools and is especially suitable for use in remote locations where other reliable power sources cannot be secured. In some potentially hazardous cases, a manually powered pump could be the only viable option as it does not require a source of power that could ignite.

 

Hand-operated pumps are available in sizes ranging from smaller single-speed devices weighing less than 5 kg to larger metal two-speed models weighing almost 45 kg. These pumps can come with oil capacities of up to eight litres and valving for either single or double-acting tools. The proper hand pump will meet requirements for system oil capacity, fluid compatibility, and valving type. Duty cycle is not a major issue because a hand pump is normally used for short one-time tasks.

 

The primary drawback with hand-powered pumps is its reliance on manual effort: its use is limited to the physical ability of its operator. Additionally, since one hand must be used to work the pump, the operator must sacrifice convenience and efficiency. Although hand-powered pumps are quite portable, they may not be operative in cramped locations, such as on ladders or catwalks, where operators may not be able to generate enough power. Further, these types of pumps require a flat surface for operating.

 

Electric Pumps

Electric pumps are the most common high-pressure pumps used after hand-powered pumps. Electric units come with versatile options of motor types, heat exchangers, valves and actuators, and operating voltages. The abundance of variations makes it challenging to choose the correct pump in this category.

 

While the major factors in selecting a pump are size, voltage, reservoir capacity, and valving, the additional aspects of electric motor and the necessary duty cycle are critical in choosing the best electric pump. Duty cycle is the time frame in which the pump will run at a particular percentage of full loads. Most high-pressure pumps are not suitable for higher duty cycles. Tasks that necessitate pressures over 5,000 psi for over an hour require pumps with coolers to regulate oil temperatures at a safe level of 65C (150F) or less. Electric motors are either induction or universal. The application determines the proper selection of either.

 

Induction motors operate for longer periods of time with greater durability. They perform at reduced noise levels, which is a significant benefit for jobs in restricted spaces. Induction motors are usually heavier, which explains why they are more commonly used in areas where a stationary, high-production pump is needed. An induction motor requires a highly stable electrical power source. A reduction in line voltage — even as small as 10 percent — could cause extensive damage to the motor. Using this kind of pump is not advisable for settings where electricity is sourced by a generator with an extension cord.

 

A universal motor pump may be ideal for situations that require the performance and speed of an electric pump and flexibility with portability and power sources. These motors are lighter than induction motors, provide more power in proportion to weight, and can function with less stable electrical power. If necessary, universal motors can run full torque on half of terminal rated voltage.

 

Air Pumps

Like a hand-powered pump, an air pump is relatively easy to use, portable and lightweight. Air pumps are available in many different sizes. They offer greater performance capabilities relative to hand-operated pumps. Another advantage is that they can be safely used in a location where an electrical current could be hazardous, provided that the pump is positioned at a sufficient distance from a compressor.

 

Reciprocating pumps are more popular than other air pumps, offering greater performance at lower cost. Usually, they are single-speed models that provide high flows at lower pressure since it can operate faster under diminished loads. However, a dual reciprocating air-powered pump is available for situations where high flow is necessary. With this design, the high-flow unit can stall at high pressure without an unloading valve.

 

A rotary air pump is ideal for higher performance needs. This type of pumps utilizes a rotary air motor which drives an ordinary hydraulic pump. However, rotary air pumps are typically noiser, heavier, and need more air than reciprocating pumps.

 

Sufficient air supply is the most critical factor to consider when choosing either air pump style. All air-powered pumps require a certain air flow rate to perform at their maximum level. If the airflow rate cannot be determined beforehand, a common standard is that each horsepower at the compressor will supply five scfm (approximately 142 litres).

 

Air pumps are suitable for operation in environments where pneumatic lines have been installed and are easily accessible. However, air pumps are typically more costly to use relative to electric pumps as compressed air tends to power tools less efficiently.

 

Guidelines for Pump Selection

 

  • Determine proper ratings for maximum operating pressure, oil capacity, flow rate, cycle frequency and duration, and valving.
  • Analyze cost factors including impact on productivity and manpower.
  • Research ergonomic and safety features. Weight, dimensions and portability must be considered to help determine the level of dexterity and strength the operator will need. Noise levels should be as low as possible.
  • Know the power source requirements. The power that is safely available often determines what pump is best to use.
  • Ensure that tool speed matches pump size needed. Power requirements increase exponentially with pump size. The ideal pump matches the necessary speed without superseding it.

 

If you need more information of portable hydraulic pump or other hydraulic pumps, I recommend you to visit YEOSHE Hydraulics Technology Co., Ltd. – they are the professional hydraulic pump and hydraulic unit supplier Taiwan. To get more details of hydraulic pumps, please do not hesitate to contact with YEOSHE.

 

Article Source: https://www.rg-group.com/blogs/which-pump-will-work-with-your-portable-hydraulic-system/

About BT Tool Holders: BT30, BT40, BT50

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There are two types of tools in CNC machinery: tool holders and cutting tools. There are other items related to tool holders, such as collets, set screws, wrenches and other setup tools.

 

Tools for CNC machinery are manufactured by a variety of brands and come in few different standards.

 

BT standard for tool holders originated in Japan and is somehow similar to CAT tool holders.

 

As well as CAT tool holders, it has numerical designations that correspond to the size of the taper: BT-30, BT-35, BT-40, BT-45, and BT-50. The higher the number is, the bigger is the taper.

 

Like CAT Tooling, BT Tooling comes in a range of sizes designated as BT 30, BT 40, BT 50, etc. and uses the same NMTB body taper as CAT 40. BT tooling is symmetrical about the spindle axis, which CAT tooling is not. This gives BT tooling greater stability and balance at high speeds.

 

BT Tool Holders will accept both Imperial and metric sized tools. BT Tooling looks very similar and can easily be confused with CAT tooling.

 

The difference between CAT and BT is the flange style, thickness, and the thread for the pull stud is a different size. BT Tool Holders use Metric thread pull studs (retention knobs).

 

If to compare BT to CAT tool holders – they look very similar and can be easily confused, however, they has different flange system and its thickness is different too. Also, the retention knobs are different. Therefore BT and CAT tool holders are not interchangeable.

 

Though both standards use the same NMTB body taper. BT tool holders are symmetrical around the main spinning axis, while CAT tool holders are not. That makes BT tool holders better balanced and more stable at higher speeds.

 

BT tool holders along with CAT and HSK standards are among the most used in CNC machinery. They will accept both imperial and metric sized tools; however, BT tools come in metric sizes. They are durable and are best choice for very high speed machinery.

 

BT Tools: Overall Maintenance

To insure proper performance of your toolholders, overall cleanliness of toolholder, collet pocket, collet, and nut must be maintained. It’s important to remember that all these components are manufactured to perform within tolerances of ten-thousandths (.0001”) of an inch.

 

Any dirt, dust, oil, chips, or other contaminant left on the spindle, taper, flange, collet, collet pocket, or nut can cause poor T.I.R. (runout) leading to premature wear of cutting tool, toolholder, and spindle mouth.

 

We recommend a regular preventive maintenance program be implemented in your shop to protect your investment in cutting tools, toolholders, and collets, and reduce scrap.

 

BT Tools and Performance & Productivity

BT tools allow use of ATC (Automatic Tool Change) technology to maximize the speed and productivity of manufacturing.

 

BT tool holders perform work with high strains and pressures, so be sure to store them safely without any chance for the tool being damaged – as this may cause some misbalance that can be critical at high speeds and precise CNC machinery.

 

BT Tool Holders: Bottom Line

Depending on your particular machining tool needs, the wide array of BT Holders that are manufactured and sold can help your job to me more efficient.

 

If you need more information of BT tool holder or CAT tool holder, I recommend you to visit Shin-Yain Industrial Co., Ltd. – they are the professional manufacturer of tool holders. To get more details of these products, please do not hesitate to contact with SYIC.

 

 

Article Source: https://toolholderexchange.com/bt-tool-holders-bt30-bt40-bt50/

The Difference Between Proportional vs. Directional vs. Servo Valves

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Understanding the available technologies in fluid power is imperative in order to design the most efficient, cost effective, and energy saving system. Traditional hydraulic equipment designs used directional control valves almost exclusively.

 

These directional valves are sometimes referred to as either “switching” or “bang-bang” valves and can be used to control flow direction, flow volume and fluid pressure. These valves can be operated by either AC or DC power.

 

Directional Control Valves

 

Directional control valves have been commonly referred to as switching valves because they simply direct or “switch” fluid passing through the valve from the source of flow to one of a selection of available cylinder ports. The flow control variety of valve generally selects an orifice which only allows a specified volume of flow to pass. The specified volume controls the speed of a cylinder or hydraulic motor. Likewise, the pressure control type is used to select a particular pressure setting.

 

Changing direction, flow or pressure during machine operation with these valves would require a separate individual valve for each direction, flow or pressure desired. The hydraulic circuit would become quite complex very quickly!

 

Proportional Valves

 

The technological solution to these more complex circuits has been the development of proportional valves. These revolutionary valves allow infinite positioning of spools, thus providing infinitely adjustable flow volumes. Either stroke-controlled or force-controlled solenoids are used to achieve the infinite positioning of spools.

 

This variable positioning allows spools to be designed with metering notches to provide flow/speed control as well as directional control functions all in one valve, instead of requiring separate valves for direction and speed. The other major benefit is when the circuit requires more than one speed. The various speeds are achieved by changing the electrical signal level to deliver the flow/speed required. No additional hydraulic components are required! These proportional directional valves are controlled by DC power.

 

The proportional controls, used with their associated electronic controls, also add the desirable features of acceleration and deceleration. This offers a variety of machine cycles, safely operated at greater speeds, yet with controlled start and stop characteristics. Regulated acceleration and deceleration result in improved machine overall cycle times and production rates.

 

Servo Valves

 

The third type of hydraulic directional control technology is the servo valve. Servo valves are not a new technology as servo valves were first used in the 1940s. Servo valves operate with very high accuracy, very high repeatability, very low hysteresis, and very high frequency response. Servo valves are used in conjunction with more sophisticated electronics and closed loop systems. As a result, servo valves are always much more expensive. A proportional control valve system can be used to improve control of most machines without the high price tag of servo control systems.

 

If you need more information of directional control valves or other hydraulic control valves, I recommend you to visit Propiston Hydraulics Co., Ltd. – they are the professional manufacturer of piston pumps and flow control valves. To get more details, welcome to check out their website and feel free to contact with Propiston Hydraulics!

 

Article Source: https://www.qualityhydraulics.com/blog/what-proportional-valve/

Types of Transmission Oil Seals: Static and Dynamic

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There are two main types of oil seal: static and dynamic. A static oil seal fits between two non-moving parts, a dynamic oil seal between a stationary part and a moving one. Most oil seals are made of synthetic rubber.

 

An example of a static seal is a simple ‘O’ ring. These seals can be found in such places as the oil filter used on combined automatic gearbox and engine units, on conventional gearbox front covers and in automatic gearboxes.

 

Dynamic seals are more complex in shape, with one or two lips, depending on where they are situated. These transmission oil seals are widely used in the transmission system of both front and rear-wheel-drive cars, where oil must be sealed in where a rotating shaft passes through a component. For example, at the outer end of a half shaft and on the differential pinion.

 

Types of Oil Seals

Dynamic seals also contain a thin coiled spring, called a ‘garter spring’, which holds the sealing lip in contact with the revolving shaft.

 

Many seals have a metal outer casing for added strength and ease of fitting. Because the seal is in constant contact with a moving part, dynamic seals eventually wear and begin to leak, and both dynamic and static seals deteriorate with age.

 

Most seals are inexpensive and easy to replace, but many are in places where you must do a lot of dismantling to get at them.

 

For example, gearbox oil seals (apart from the extension-housing seal on rear-wheel-drive cars) can be replaced only with the gearbox removed – a task best left to a garage.

 

However, the seals on the rear axle and final drive should all be possible to replace fairly easily, although special tools may be necessary.

 

After many miles and several new seals, the moving part against which the dynamic seal fits may wear.

 

Slight wear can sometimes be taken up by fitting a shim between the seal and its housing, to change the point of contact. But if a shaft becomes seriously grooved it must be replaced or repaired at a garage or engineering machine shop.

 

This is not a common occurrence, but any point at which a shaft rotates in a seal is a possible leak source. Check such points regularly.

 

When fitting and handling any oil seal, keep it and its sealing point absolutely free from dirt and grit. Make sure you fit the seal the right way round. The lip (or lips) always faces the oil it is sealing.

 

To get more information of transmission oil seals, I sincerely recommend you to visit ASA Oil Seals Co., Ltd. – they are the professional oil seal manufacturer in the industry. If you need much more choice of oil seals, please contact with ASA immediately!

 

Article Source: https://www.howacarworks.com/transmission/replacing-transmission-oil-seals

Machining Performance Reveals Opportunities for Efficiency Gain, The Value of Tooling Choices That Save Time Will Be The Important Key

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As more sophisticated insight into machining performance reveals opportunities for efficiency gain, the value of tooling choices that save time will become increasingly clear.

 

The promise of Industry 4.0 is great news for the adoption of advanced cutting tools. The reason: In interconnected manufacturing systems in which comprehensive data reveal the performance of the system, the impact of an advanced tool becomes clear.

 

Historically, the lack of clarity about manufacturing performance has been the main impediment to shops embracing high-end cutting tools. Tools typically account for just 3 percent of the per-piece production cost of a machined part. However, a tool’s price tag is more visible than its benefits. This fact leaves manufacturers frequently pursuing cost-saving steps that have little impact. For example, at 3 percent of unit cost, finding tooling that is one-third less expensive will only cut the per-piece part cost by 1 percent. Something similar is true of tool life: Even doubling tool life will only cut cost per part by 1.5 percent. However, finding tooling that provides for significantly faster machining or reduced non-cutting time enables each unit of machine and labor time to deliver more parts, likely cutting the cost per piece by 10 or 15 percent.

 

This argument makes sense in the abstract. The problem is, it can be hard to marshal the data to prove this case as it applies to a specific tool in a specific cut. That is where Industry 4.0 comes in. We are moving into a world in which manufacturing systems increasingly do marshal data such as this, and manufacturers increasingly make use of it.

 

To get more efficient cutting tools, come and visit Shin-Yain Industrial Co., Ltd., they can meet all your requirements of cutting tools.

 

Article Source: https://www.mmsonline.com/blog/post/iscar-leader-describes-tool-technology-for-machine-shops-acting-on-data

What’s The Best Type of Gearbox for Servo Applications?

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Gearboxes provide torque multiplication, speed reduction, and inertia matching for motor-driven systems. Servo systems, specifically, require gearboxes that can supply not only high torque with low added inertia, but also high precision and stiffness. One type of gearbox meets all these criteria while providing relatively long operating life with low maintenance requirements: the planetary gearbox.

 

A planetary gearbox consists of multiple planetary gears, which revolve around a central sun gear while engaging with an internal gear and rotating on their own axes. The continuous engagement of the planetary gears means the load is shared by multiple teeth, allowing planetary designs to transmit high torque loads.

 

This load sharing among teeth also gives planetary gearboxes high torsional stiffness, making them ideal for processes that involve frequent start-stop motions or changes in rotational direction, which are common characteristics of servo applications. Most servo applications also require very precise positioning and planetary gearboxes are designed and manufactured to have low backlash, with as little as 1-2 arcmin in some cases.

 

Planetary gearboxes can use spur or helical gears. While spur gears can have higher torque ratings than helical gears, helical designs have smoother operation, less noise, and higher stiffness, making helical planetary gearboxes the preferred gearbox for servo applications.

 

When a gearbox is added to the drivetrain, the rotational speed delivered from the motor to the driven component is reduced by the amount of the gear ratio, which can allow the system to make better use of the servo motor’s speed-torque characteristics. Planetary gearboxes are able to accept very high input speeds and provide speed reduction of up to 10:1 for standard designs, with high-speed designs providing gear ratios (and, therefore, speed reduction) of 100:1 or higher.

 

Planetary gearboxes can be lubricated with either grease or oil, although a planetary gearbox for servo use (sometimes referred to as a “servo rated” or “servo” gearbox) is often lubricated with grease. In either case – grease or oil lubrication – planetary gearboxes are often lubricated for the life of the gearbox by the manufacturer, which eliminates maintenance for the end user.

 

The most important benefit of using a gearbox in a servo system is arguably its effect on the inertia of the load. The load inertia, which is reflected to the motor, is reduced by the square of the gear ratio. So, even a relatively small gear reduction can have a significant effect on the inertia ratio.

 

While a “perfect” inertia ratio of 1:1 is impractical in many cases, the goal of most servo system designs is to keep the inertia ratio as low as possible in order to achieve high system responsiveness. Reducing the load inertia by adding a gearbox to the system means that a smaller motor (with lower inertia) can be used, while still maintaining a desirable ratio between the motor and the load. And a planetary gearbox, by virtue of its compact design, has a low inertia itself, adding only a small amount to the load inertia that the motor must balance.

 

If you want to get more information of servo gearbox, I recommend you to visit Jia Cheng. It is a professional manufacturer of reducer, gearbox, and coupling. To get more details, welcome to check out their website and feel free to contact with Jia Cheng Precision Machinery Co., Ltd.

 

Article Source: https://www.motioncontroltips.com/whats-the-best-type-of-gearbox-for-servo-applications/

Choosing the Right Metal Hole Saw

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Hole saws are cylindrical cups with a serrated edge to cut various sizes of holes in a variety of materials. The serrated edge is designed to cut the hole; the other end is designed to be driven by an arbor or drill chuck. There is a wide variety of hole saws available in the marketplace, from inexpensive carbon steel hole saws to extremely specialized, application driven hole saws. The most commonly used saw, however, is the bi-metal hole saw.

 

Advantages of Bi-Metal Hole Saws

Most users prefer a bi-metal hole saw for the majority of their work because it is compatible with a wide variety of materials. It also cuts faster and smoother and with reduced vibration due to the variable pitched teeth.

 

Hole saws have two different types of steel joined together to form the edge of the cutting end of the hole saw. High speed steel is joined to a soft spring steel to form a durable edge that will cut a multitude of materials and help provide long life. High speed steel is used on the outer edge due to its wear resistance properties and forms the cutting edge of the teeth. Soft, spring steel creates a flexible backing material that allows the hole saw to absorb impacts of the job of drilling holes in difficult-to-cut materials.

 

A good bi-metal hole saw will easily cut through softer materials, such as plastic and wood-based items, as well as harder materials, such as steel and stainless steel. The type of high speed steel chosen by the hole saw manufacturer will contribute greatly to the performance of the hole saw. The best bi-metal hole saws will be made with high speed steel that has a high percentage of cobalt content.

 

More important to users is the life they will get from their bi-metal hole saw, or how many holes they will be able to cut before needing to replace it. In addition to using high speed steel with cobalt, the heat treatment process used by the manufacturer will impact the life expectancy of the hole saw.

 

One common frustration users have with cutting holes with a hole saw is removing the plug, or slug, from the cup after the cut is complete. Look for slots that are accommodating to easily work the plug from the cup.

 

Tips on Arbors and Pilot Bits

Cutting a hole with a hole saw requires the use of an arbor and often a pilot bit. Arbors, also called mandrels, are designed to connect a hole saw to a drill chuck as well as hold the pilot bit. They are made from hardened steel and alloy steel components for long life, as they need to last through multiple hole saws. Arbors connect to the hole saw with a thread in the cap of the hole saw. Hol”-18 thread drives hole saws 1-1/4″ and larger. The larger hole saws (1-1/4″ and larger) also have drive pin holes in the cap which receive drive pins from the arbor to facilitate quick and easy changes of the hole saw. Smaller hole saws connect to the arbor only with the thread and often get locked onto the arbor requiring tools to remove the hole saw.

 

There are quick-change systems in the market to help with quickly changing small hole saws on the arbor without the use of supplementary tools. The best sawing systems are universal. They will operate as a quick-change system with any brand of hole saw. Also, look for systems that don’t require the use of any proprietary components or adapters to operate. These adapters often lock onto the hole saw and may require the use of tools to remove the hole saw and may not deliver the tool-free changes you are looking for.

 

Pilot bits take most of the punishment in hole saw drilling. Many users drill with some oscillation movement to help clear chips from the cut. This puts a lot of side pressure on the pilot bit.

 

When drilling holes with a hole saw, you need a complete system designed to deliver the performance you need to do the job. This means all components of the system, not just the hole saw, need to provide you with durability and performance. When you choose the right system, you’ll find that cutting holes has never been easier.

 

If you need more information or choice of hole saws, welcome to check out K&W Tools Co., Ltd. – the company has specialized in kinds of metal cutting saws and woodworking saws for years. To get more details of metal hole saws, please do not hesitate to contact with K&W.

 

Article Source: https://www.grainger.com/content/supplylink-choosing-hole-saw

Understanding Hydraulic Pump Types and Differences

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There are many types of machinery that are driven by or actuated by a hydraulic pump. There are a variety of different systems that are used to generate the flow and pressure required and they all have a hydraulic fluid and a system that controls the fluid and pressure with hydraulic valves. The pump needs to drive and this can be done by any force generating device such as an electric motor, an internal combustion engine, wind power or even a person operating a lever or crank.

 

How It Works

A hydraulic fluid is put under pressure by the hydraulic pump and the pressure can then be used to drive a piston or drive unit via hydraulic lines. A hydraulic valve is used to switch the force on and off to give control of the device. The control can be mechanical or electrical and may be actuated manually through a lever or a button or automatically through control system.

 

Volume and Pressure

There are many different hydraulic systems and they all used a combination of volume displacement and pressure to work. The higher the pressure the more robust a system needs to be because of the tremendous forces involved. In general higher pressure systems are more efficient and the higher the pressure the less flow is required for the same application of force. There are two general types of pumps fixed displacement types that displace the same amount of fluid every cycle and adjustable displacement types that can vary the displacement for increased or decreased pressure.

 

Pump Types

There are many different types of hydraulic pumps that have different applications. Screw type pumps are good for high volumes at relatively low pressure. They are simple and effective but not particularly efficient. A gear pump has a more balanced pressure and flow and is very simple but is not very efficient particularly as pressure increases.

 

The vane pump is widely used in system of medium pressure up to 150 bar and beyond. While the axial piston pump is used in applications that require the highest efficiency. Where high pressure above 300 bars is needed the radial piston pump combine high pressure and low flow rates needed in these applications.

 

If you need more information of hydraulic pumps, please come and visit ANSON Hydraulics Industrial Ltd. – they are the professional manufacturer of various vane pumps. You can find variable vane pump, fixed displacement vane pump, hydraulic power pack unit, and much more hydraulic pumps there. To get more details, welcome to check out their website and feel free to contact with ANSON.

 

Article Source: http://peerlessengineering.com/understanding-hydraulic-pump-types-and-differences/

Reducing Sinker and Wire EDM Consumable Costs

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A key area for improvement in EDM operations is the reduction of EDM consumables. New technologies, machine settings, and improved material grade limit ram or sinker EDM electrode wear to 0.1% while maintaining productive machining speeds. For wire EDM, new low-consumption technologies reduce the biggest expenses—the wire itself—by as much as 50 percent.

With all EDM machines, you experience the benefits of designing and cutting complex shapes and tapered holes with hard metals. You can depend that the machine has the capacity to cut exactly what you want. Sinker EDM machines use an electrode and workpiece submerged in liquids such as oil or dielectric water. A power supply is connected to the electrode and generates an electrical potential between both of the parts, producing a breakdown to form a plasma channel and spark jumps. The sparks initiated by the power supply often times strike one another.

In the sinker EDM process, wear on the electrode starts as soon as the erosion process begins. As metal is burned away on the workpiece, the electrode gradually experiences wear loses its fine details, and is dimensionally changed. Minimizing electrode wear is not only critical to reducing costs and lead times but also improving part accuracy.

From a general sinker EDM perspective, quality graphite electrode materials provide the most productive machining speed. The wear rate of a graphite electrode depends largely on the size of the detail, the electrode reduction amount, and the power settings used. However the grade of the graphite is a contributing factor. Using the correct grade of graphite will limit wear and rate of erosion.

Wire electrical discharge machining uses a single string of thin metal wire to cut thick metals for precise incisions and splits. Similar to Sinker EDM, Wire EDM uses an electrode and spark to cut metal. Using a spark erosion technique, Wire EDM machining submerges the part being cut in deionized water and the wire acts as the electrode, creating a spark that roughs or skims the part into the desired shape without the wire ever coming in contact with the part.

The price of a wire EDM machine is minimal when compared to the cost of the wire over the life expectancy of the machine. Excessive wire consumption on a wire electrical discharge machine is costly. Technology that allows slower unspooling speeds without compromising results appears to be the answer. The wire is the single highest expense in operating a wire EDM. With even the least expensive EDM wire running $5 to $6 per pound, investing in low-wire consumption EDM machines appears to be the answer.

A key area for improvement in EDM operations is the reduction of EDM consumables. For Sinker EDM users, consider using better grades of quality materials to reduce cost. For Wire EDM users, consider investing in new technology with machine settings that reduce the amount of wire used.

Article Source: https://graphel.com/blog/save-money-edm-sinker-consumable-costs/

How to Repair a Shoe with Rubber Shoe Cement?

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Shoes that are torn or those with separated soles can be repaired with rubber shoe cement. Rubber shoe cement is made of latex polymers designed to stick together two pieces of rubber. However, rubber cement can be used to create a waterproof and temporary coating over holes in the fabric or leather part of shoes, if painted on and allowed to dry. Rubber cement can also serve as a protectant to prevent wear and tear on shoes.

 

Holes Part:

Step 1

Estimate the size of the hole. Cut or tear a napkin or piece of paper towel in the approximate shape of the hole. This piece should be twice the size of the hole.

 

Step 2

Place the torn napkin or paper towel inside the shoe, aligning it with the hole.

 

Step 3

Brush one thick coat of rubber cement over the hole on the outside of the shoe. The most effective method to cover the hole is by using long, steady strokes. Ensure the shoe cement is coating the napkin or paper towel and a 1- to 2-inch area surrounding the hole.

 

Step 4

Allow rubber cement to dry for three to four hours.

 

Step 5

Apply a second thick coat over the original area. Allow to dry for three to four hours. Once two coats of rubber cement have dried on a shoe, it can be worn.

 

Soles Part:

Step 1

Remove any dirt or debris from between the sole and the body of the shoe. Dirt and debris will prevent the rubber cement from adhering properly.

 

Step 2

Apply a thick coating of rubber cement to the exposed area of the sole.

 

Step 3

Press the sole firmly to the shoe, applying pressure for one to two minutes.

 

Step 4

Place the shoe on a flat surface with a heavy object on top of it. This allows rubber cement to properly adhere in the correct places. Leave the shoe alone for 48 hours. After 48 hours, the shoe is fit to wear.

 

To get more information of shoe cement or shoe adhesive, I highly recommend you to visit Great Eastern Resins Industrial Co. Ltd. – they are the professional adhesive manufacturer in Taiwan. You can find kinds of industrial glue and shoe adhesive there. Learn more details, please do not hesitate to contact with GRECO.

 

Article Source: https://www.hunker.com/13422479/how-to-repair-a-shoe-with-rubber-cement