CNC High Speed Horizontal Machining Center Made By SIGMA Machining Centers Supplier

SIGMA offers advance CNC high speed horizontal machining center to many great clients. Our high-speed CNC machines give you the ability to machine your parts at much faster speeds and with greater accuracy than ever possible before.

 

If you purchase our CNC high speed horizontal machining center, you could cut your machining costs by taking advantage of high speed, 4-axis CNC machining compared to conventional CNC machining. Here are 3 reasons why:

 

  1. High spindle speeds. High speed CNC machining involves using spindle speeds well in excess of typical CNC machines, usually double or triple. Faster spindle speeds mean more material removal in less time.

 

  1. High tech tooling. Higher spindle speeds can take advantage of today’s high tech tooling that lower spindle speed machines can’t.

 

  1. 4-axis rotation. Most conventional CNC machines are only 3-axis. If a part needs work done on three different sides, it requires three different set ups. On a 4-axis machine, all three sides can be machined in one set up. This saves time, reduces handling and improves repeatability.

 

High Speed Machining

SIGMA SMH series CNC High Speed Horizontal Machining Center

SMH Series CNC High Speed Horizontal Machining Center

Features:

  • High Loading Roller Type Linear Guideways for Three Axes.
  • 4th & 5th Rotary Table (Optional). By Customer Request.
  • Belt Drive type Spinlde BT-50, 4000rpm.
  • Auto Tool Changer 40pcs (Optional 60 / 80 / 120pcs). T-T Tool Change 8 sec only.

 

If you are interested in learning further specification of SIGMA’s CNC high speed horizontal machining center, welcome to visit our website to see what excellent machining centers SIGMA can offer you!

 

 

Article Source: http://www.advancecncmachining.com/high-speed-cnc-machining/

 

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Excellent Quality RS-466 Model Straight Line Rip Saw in TRUPRO-TEC

Whether wood cutting, milling, profiling and jointing technology, TRUPRO-TEC stands for pioneering solutions in Taiwan. We are committed to ongoing quality improvement and excellence in service delivery. In order to meet all clients’ expectations and needs, we supply a comprehensive range of rip saw series, such as straight line rip saws, single- and multi- blade rip saws, thin cutting frame saw, etc.

 

Now, I’ll have a simple TRUPRO-TEC’s product introduction – about straight line rip saw.

 

RS-466

Straight Line Rip Saw

RS-466 Rip Saw

Rip Saw Features:

 

  • The extra-heavy fixed anti-kickback fingers eliminate the conventional problem of bumping between the fingers and chain, providing added safety.
  • Pressure rollers. Supported on both sides, hold stock stably and evenly.
  • The 150mm extra wide chain block provides a smooth feeding effect.
  • Variable feed speed permits the cutting of a variety of stock, hard or soft, thick or thin.
  • This improved design provides solid support when ripping large panels.

 

If you are interested in learning more information about RS-466 model straight line rip saw, visit TRUPRO-TEC’s website to check out its details. Any questions you have concerning our products, please contact with us!

 

 

TRUPRO-TEC Industrial Co., Ltd.

No.90, Alley22, Lane 428, Sec. 1, Fong Yuan Blvd. Fong Yuan Dist. Taichung City, Taiwan, ROC

Tel: 886-4-25358299(Rep)

Fax: 886-4-25332009

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CNC Boring Machining Services For Cost Effective Parts

The CNC boring machine has revolutionized many jobs in the machine shop through its ability to economically create parts with a series of precise, perfectly-positioned holes or cuts. Available in table, planer, or floor models, the boring mill often is used to increase the accuracy and tolerances of holes and cuts.

 

How CNC Boring Mills Work

 

The most popular type of CNC boring mill, the table type, can handle pieces as large as 66 ft. The table supports the items being bored, while three axes drive the part toward the work spindle and create the holes. The machine, controlled by computerized systems, may do the rough part of process or the more precise cuts.

 

Boring is used to create holes of different depths, usually by making a series of multiple cuts and retractions. During the process, the axes spin at a high RPM, which produces intense heat that is dissipated by pumping coolant through a channel that runs the length of the boring bar. Many machines operate on fixed cycles based on preprogrammed subroutines called G-codes to ensure that the results will be uniform.

 

Applications for CNC Boring

 

CNC boring machines are useful for creating precision gears for equipment. A gear blank is cut, ground, and machined with accuracy. Given the sizes that a horizontal machine can handle, the gears meet the needs of industries such as aerospace, oil and gas, and defense, which require large parts.

 

Cost Effectiveness of CNC Horizontal Boring

 

Due to increasing metal prices, CNC machining is considered a cost effective way to produce gears and other parts with intricate precision cuts. Often made by forging or casting in the past, the cost of these parts has increased by 200-400% over the last decade. Though the machining process removes costly metal, it produces a more accurate part that lasts longer. The cost savings realized by machining has made many companies rethink how they manufacture and finish their original and replacement parts.

 

Selecting A CNC Machining Vendor

 

While many machine shops offer CNC machining, the one to choose is the one that has the proper equipment to do the job. For large-scale production, you need a facility that can handle the part size on work table sufficient to support its weight. Given that you will be working with costly materials, you want a company that is ISO 9001 certified, experienced in working with large parts in your industry, and staffed with trained machinists whose skills are continuously advanced through continuing education and certifications.

 

SEHO Industry Co., Ltd. is the supplier of used CNC boring machines. They are the professional second hand machinery company in Taiwan. If you are looking for ideal used machines in hurry, you can try to visit the website of SEHO to find the machinery you need.

 

Article Source: http://EzineArticles.com/7475761

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How to Succeed with Smart EDM Operation

The benefits of EDM have become clear to many mold manufacturers throughout the past several years. It allows for the super-precise machining of delicate, complex parts and hard-to-machine materials, and eliminates downstream operations such as polishing and deburring. Still, some moldmakers may not be getting the most from their EDMs. Several factors can contribute to the success of EDM or be detrimental to the process.

 

Choosing the Right Machine

First and foremost, machine selection is a huge part of operational efficiency in EDM. Depending on the application, moldmakers can choose from wire, drilling, sinker or some combination of the three.

 

  • Wire EDM:

Choose a machine with the latest cost-saving features. For example, some machines have an operational mode that minimizes wire consumption by slowing down the wire feed. The right wire EDM can also help manufacturers save on energy and consumables, with features that control and optimize dielectric fluid volume and pressure, pump and filter operation, and resin consumption.

 

  • Drilling EDM:

Moldmakers should look for machines that combat hole tapering—otherwise known as bullet nosing. To avoid this common problem, machines must not only use high-quality electrodes, but also feature a power supply with a low unload voltage—ideally less than 35 volts. This maintains a high speed, but reduces wear and tear on electrodes. The right type of dielectric fluid can also combat bullet nosing. Try tap water with the appropriate additives instead of de-ionized water.

 

These are ideal for cavity and rib machining, and as with wire EDM, selecting the correct machine is the key to productivity. Features such as c-axis, lateral servo, high-speed jump and state-of-the-art power-supply technology can reduce electrode wear and improve productivity. CNC sinkers with high-speed spindles can also perform the same job as an EDM drilling machine, but at a much smaller hole diameter and with more precision.

 

When it comes to purchasing any type of EDM, remember to consider its control technology. Many machines now have sophisticated software that incorporates 3-D modeling, which can significantly improve ease-of-use and operator efficiency.

 

Maintaining EDM Performance

Proper preventative maintenance is crucial in keeping EDM machines running as efficiently and economically as possible. Operators need to check and maintain consumables—such as power feeders, filters and resin—regularly to prevent unstable, inaccurate machining.

 

Cleanliness can also affect an EDM’s performance. Contaminants such as sludge, dirt and spray from dielectric fluid as well as burrs can compromise filter life, cause corrosion and reduce overall accuracy. Check and clean the worktable, lower arm and head, seal plate, conductivity sensor, fan cooler, filter pump and auto-threader to maintain peak performance. Also be sure to keep the machine well lubricated.

 

Check the power feed and ground cables regularly. Problems with them are the number-one cause of speed loss in EDM machines. The wire transport system, rollers, bearings and flush cups are other elements of the machine that are often the culprit of faulty performance.

 

Summary

With the pressures to compete on a bigger and more global scale, moldmakers have been forced to do more with less. Increasing productivity while lowering costs is a goal on every mold manufacturer’s list. Fortunately, the opportunities to succeed and grow with new EDM technologies—and several tried-and-true best practices—have never been greater.

 

OSCAMRAX has been totally dedicated to design and manufacturing of electrical discharge machines and CNC sinker EDM. If you are interested in learning further details about EDM, welcome to browse our website or contact with us directly!

 

 

Article Source: http://www.moldmakingtechnology.com/articles/how-to-succeed-with-smart-edm-operation

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Protect Your Diesel Forklift Trucks from ‘Bad’ Fuel

Tackling chemical effects, water and microbes

Diesel is one of the materials handling industry’s most basic requirements, but like other fuels it deteriorates with age. Chemical degradation, contamination with water and infestation with microbes can turn it into an unhealthy cocktail that damages your forklift trucks and your operation.

 

At best, ‘bad’ diesel reduces the efficiency of your lift trucks’ performance. At worst, it causes serious and expensive damage. If you think you can avoid this by buying only ‘good’ diesel, you are mistaken. The changes that turn good diesel bad usually take place on your own premises.

 

Suppliers of diesel in the EU and other economically developed regions are governed by rules on its quality, content and storage, so you can expect it to reach you in good condition. Always buying from a supplier with a good reputation lessens the risk of careless handling and storage in the supply chain from the refinery to your business. The differences between brands of diesel tend to be in the mix of additives used.

 

The problems

Even under the best conditions, chemical activity will eventually change the nature of stored diesel. The products of that chemistry include solid materials which form a slimy layer on surfaces and sludge at the bottom of tanks. Water is bad news for engines on its own, but it also encourages microbial growth which speeds up the chemical degradation.

 

Let’s look at each of those interacting factors in turn to see where they come from and what effect they have. As soon as diesel is exposed to air it reacts chemically. This starts off chain reactions that result in more and more undesirable molecules and solid breakdown products. As well as causing blockages, these substances are often corrosive. If you store diesel, they can become a problem within a few months – and even sooner if water and microbes increase their production.

 

Diesel can become ‘wet’ through leaks in storage tanks and absorption from a moist atmosphere. Water in diesel is directly damaging to some engine components and it interferes with fuel combustion. It also reduces the fuel’s lubricating effect, exposing engines to excess wear and damage. In a metal storage tank, water can lead to corrosion and further contamination. In addition, the presence of water helps microbes to thrive.

 

Diesel is an organic substance which can be used as food by a variety of bacteria, fungi and yeasts. Arriving via the air, in moisture or from a contaminated supply, these microbes can multiply hugely. Their acidic by-products, along with the slime created by their own biomass and by breakdown of the fuel, can be highly damaging. They form a layer or biofilm on surfaces, often collecting in pits and crevices where their corrosive effect becomes even more concentrated.

 

Slime and sludge produced by these factors blocks filters and fuel lines, while the acids affect engines, fuel systems, storage tanks and any other vulnerable surfaces coming into contact with them. Combustion efficiency decreases, engine life is shortened and bills for replacing components become more frequent. Once microbes have infected a diesel forklift truck they are very difficult to eradicate.

 

For completeness, it should be mentioned that other materials can contaminate fuel. Abrasive particles of rust, dirt and sand are particularly to be avoided in engines.

Before discussing solutions to diesel problems, it is worth noting that the composition of this fuel has changed over the years and is likely to continue changing.

 

Regulations on reduction of sulphur, to clean up exhaust emissions, have led to the use of ultra-low sulphur diesel (ULSD). Sulphur increases the lubricant properties of diesel, so engines using ULSD may wear more quickly.

 

Throughout Europe, biodiesel (biologically produced diesel) is now blended with the fuel to improve lubrication. Unfortunately biodiesel breaks down more quickly, absorbs more water and is more hospitable to microbes. With biodiesel, even greater care must be taken to protect the fuel from contamination.

 

The solutions

The first steps toward avoiding diesel quality problems are to buy it from a reputable supplier, as already mentioned, and to store it in suitable, well-maintained tanks. Regulations on storage of diesel vary a little between countries in Europe and mainly concern the potential environmental impact of leaks reaching water bodies and other natural habitats. For diesel users, avoiding the loss of expensive fuel should be a strong enough incentive to ensure vigilance against leakage.

 

Safety legislation is stricter for petrol than for diesel, but it must always be remembered that all fuels are flammable. Keeping storage tanks away from sources of heat is essential, and a cool environment also helps in maintaining the diesel’s condition.

 

Some people may believe that the fuel filter in their diesel forklift truck’s engine will remove any contamination. This is unlikely. The fuel you put into the truck must be kept clean and in good condition within the storage tank. If diesel is stored at a low temperature, and certainly below 70 ºF (21 ºC), and care is taken to avoid contamination, it should last for a few months. To extend its life further, fuel stabilisers, biocides and other treatments may be needed.

 

A storage tank should be regularly checked for any defects that could let diesel leak out or water leak in, while openings should be water-tight and caps should be secured. The space between the fuel and the top of the tank is filled with air, which can be a source of moisture. Ideally that space should be kept to a minimum, allowing only enough for expansion of the fuel. This is another good reason for topping up frequently with fresh diesel from the supplier rather than storing large amounts.

 

A variety of fuel stabilisers can be bought for use if diesel has to be stored for relatively long periods. Regular, routine testing of stored fuel for water and microbial contamination is a sensible precaution. Simple-to-use test kits are available for this. The sooner these problems are detected, the easier and less costly they are to tackle.

 

If fuel is heavily contaminated by microbes, a large dose of biocide can be used to kill them. The dead bodies of the microbes, along with the solid material they have helped to create, need to be filtered out before the fuel is fit to use. Killing all of the microbes is difficult when they are living deep within slime and sludge, so biocide treatment will not work unless the storage tank is thoroughly cleaned.

 

Simple measures to reduce contamination risks include using a filter whenever moving fuel from one storage vessel to another, or into the tank of a forklift truck, and always doing this in a dry, dirt-free place. At the other end of the scale, for operations that really do require long-term storage of diesel in large quantities, there are specialists who can supply automatic systems for cleaning and removal of solids, water and microbes. Having invested heavily in your diesel forklift trucks and your business, it makes absolute sense to protect them.

 

Tailift is the professional manufacturer of producing diesel forklift trucks. If you are interested in learning more information about forklift truck series, welcome to visit Tailift website to see what products we can offer you!

 

Article Source: http://eurekapub.eu/fleet-management/2015/04/14/protect-your-forklift-trucks-from-bad-diesel-fuel

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The Importance of Having a Reach Truck or Forklift

A lifting truck is very much like a forklift, but there is a small difference. This kind of vehicle is like a small forklift, designed for small aisles. They are usually electric powered and are named reach trucks because the forks extend to reach a load. Having a lifting truck in your warehouse or facility can increase your work efficiency and overall warehouse performance. Apart from this, there are many more other benefits you should consider when purchasing a lifting machine. I recommend you speak to a dealer or manufacturer about the benefits a reach truck can add to your business. One of the many benefits of owning an electric powered lift vehicle is that it costs way less to maintain than other types of forklifts. This is because they do not contain as many moving parts and do not need any type of fuel. They cost less to operate on per hour compared to a diesel or petrol powered forklift.

 

However, not everyone can afford to buy all the machinery and equipment they would need to run business. Not every business is as successful. Luckily, there are things like truck hiring companies. Truck hiring companies enable smaller businesses that use heavy machinery and equipment like reach trucks. Reach truck hire have become extremely popular and small businesses find this type of service very helpful. Companies that might only use reach trucks every now and then for small, irregular projects also find reach truck hire companies useful.

 

One distinctive difference between regular forklifts and reach trucks is that reach truck has the ability to lift pallets in a vertical fashion. This is especially helpful if you have a warehouse that utilizes high storage racks that might be difficult to reach.

 

Forklifts and lifting trucks are used for a number of different reasons, as we know. They are a critical element to warehouses and distribution centers, so much so that the warehouse efficiency and overall performance of the business would be noticeably decreased if without one. Obviously, like with most vehicles and heavy machinery, a forklift or lift truck driver would need to have a license to be able to operate these machines. Often times, drivers of these machines will have to be guided into the warehouse or factory through guide rails laid out on the floor.

 

Forklifts, lifting trucks and any other type heavy machinery often come with a nameplate that indicates, amongst others, the weight the machines are able to handle: normally between one and five tons. Larger machines that have up to fifty ton loading capacity are used to load larger objects, like shipping containers. The information located on the nameplate is extremely important and should never be ignored or removed: loads must not exceed these limits, as it can be extremely dangerous. In many jurisdictions, it is illegal to remove or tamper with the nameplate without permission from the machine’s manufacturer.

 

Forklifts and lift trucks are essential equipment in some industries. If you are interested in learning more information about reach truck, welcome to browse the website of Global Power Co., Ltd. The company has been a specialist for the world’s brand of lift trucks from China. The models of CT POWER forklift truck are compact and have obtained the certification of CE and ISO 9000, which have so far won good reputation among customers from Europe, Middle East, U.S A., Canada, Southeast Asia, etc.

 

 

Article Source: http://EzineArticles.com/5942500

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Selecting Plasma Welding Machines

Plasma welding machines have become quite popular today. These machines have reduced their price also. There are many who are going out to purchase plasma cutting machines today. The machines cut electrically conducting metal with the help of a high velocity ionized gas that is brought out of a nozzle. The high velocity of ionized air turns into plasma as they conduct electricity from the nozzle. This plasma is used to cut the metal sheet as it comes into contact with it. The metal sheet is melted and cut along the desired line of cut with the help of this machine. This process is widely used in the industry today. This is a perfect method of cutting steel and non-ferrous material. This method is used by amateurs today too as it is easy and much more efficient than normal cutting tools.

 

There are certain guidelines that you should stick to when you are going to purchase a plasma cutting tool. Not only will this enhance your knowledge about the product but it will also help you make an informed decision about the product that you are going to purchase. The first factor that you need to consider when you are buying such a tool is the thickness of the material that you are going to be working with. For a material with high thickness you should go for a machine that has a high amperage rating. The higher the amperage rating the thicker metal you can cut. However, if you are working with thin sheets of metal then you can go ahead with a low amperage machine. The next thing that you should remember is the cutting speed or the production rate. If you require high rates of production or high cutting speeds, then you should go for a machine that has again, a high amperage rating. Lower amperage rating would mean lower cutting speeds. However, in thinner metal cuts, the quality of the cut is reduced. The optimal cutting speed would be obtained from a machine that has high amperage rating.

 

The pilot arc of the plasma welding machine often conducts with the air to produce high frequency. This sometimes causes problems with other electrical equipment that are around the machine. Therefore make sure that you manage enough space between the machine and the plasma cutting tool. This will ensure that your other equipment does not get damaged with the electricity that is conducted in the air while the machine is operational.

 

When selecting a plasma welding machine, you should be sure to view a product demonstration and also make a number of test cuts till you are satisfied with the machine. You should always try to go for a cutting machine that has a high pilot arc. This will give you more control over your work and would increase the quality of the work. Always purchase from a reputed manufacturer. Most of the manufacturers today provide total consumer support so you will have no problem with the machine afterwards.

 

MAY SHUAY specializes in manufacturing and marketing of high efficient and labor-saving turn key automatic welding equipment. We offer customers the options of laser welding machine, seam welders, precision plasma welding machine, inverter TIG welders, MIG welders and plasma cutting machine. Our variety and complete line of welding machines offer customers a one stop shopping selection. Welcome to browse our website to learn further details about plasma welding machine or other welders. Feel free to contact with May Shuay.

 

 

Article Source: http://EzineArticles.com/6108553

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What are Electric Immersion Heaters and Their Pros and Cons?

Here, we tell you what you need to know about immersion heaters – including who needs them, the pros and cons of having an immersion heater, and why it could be costing you more than necessary to heat your water.

 

Plus, find out how you could use an immersion heater to get free hot water.

 

What is an immersion heater?

An electric immersion heater is an electric water heater that sits inside a hot-water cylinder. It acts a bit like a kettle, using an electric resistance heater (which looks like a metal loop or coil) to heat the surrounding water.

 

Immersion heaters are connected to their own power supply via a cable. They can be easily switched on and off, as there’s no need to constantly heat the water in your hot-water cylinder. Immersion heaters can either be used as a property’s primary water heater, or as a backup water heater for combi boilers.

 

Who needs an immersion heater?

Most households will use a combined central heating/hot water boiler to heat their home and provide hot water. However, some households may choose to have an immersion heater too, as a backup.

 

Other households, particularly those with older heating systems, use electric immersion heaters as their only source of hot water. Most immersion heaters are found in rented housing.

 

Immersion heater – pros

  • If your immersion heater has a thermostatic control, it will automatically turn off when it reaches the temperature you set on the thermostat.

 

  • Immersion heaters are not connected to your boiler. So if your boiler breaks down, you can still generate hot water for your home.

 

  • If your immersion heater has a well-insulated jacket, it can keep water hot for several hours after it switches off.

 

  • Time-of-use tariff customers can set timers so their immersion heater switches on during cheaper off-peak hours.

 

  • You can usually turn your immersion heater on or off by simply flicking the switch on the wall socket.

 

Immersion heater – cons

  • Heating water using electricity is more expensive than heating water with gas.

 

  • A typical immersion heater uses 3 kilowatts of electricity an hour, so it will cost the average house about 50p an hour to run.

 

  • Most households will need to run an immersion heater for at least a couple of hours a day to get the water hot enough – costing at least £360 a year.

 

  • An immersion heater needs a thermostatic control, otherwise it can heat the water to far too high a temperature.

 

  • Some heating engineers may recommend you leave your immersion heater on 24/7 – however, this can be hugely expensive unless it has a thermostatic control.

 

  • Be aware that you need to heat the water in your immersion heater to above 50°C to kill off bacteria.

 

Established in 1971, Cheng Tay Heater & Instrument Co., Ltd. has been in the business of developing and introducing the latest machinery while pioneering new electrical heating techniques. We can supply tailor-made or prototype heating elements for the entire scientific and industrial spectrum. If you need more information about electric immersion heater or other heaters, welcome to browse our website or contact with Cheng Tay directly!

 

 

Article Source: http://www.which.co.uk/reviews/home-heating-systems/article/home-heating-systems/immersion-heaters

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What Are the Different Types of CNC Machining Tools?

The most common types of CNC machining tools are the vertical milling machine, lathes, and drilling or boring machine. Other types include EDM machines, laser cutting machines, and water jet profilers. These are just a few of the examples used in the manufacturing industry today.

 

The acronym CNC stands for “computer numerical controlled.” In these tools, a computer or “controller” drives the machine according to G-code instructions. The machines are designed to quickly perform repetitive tasks accurately at high speeds. Common tasks include cutting, grinding and drilling.

 

Fabrication of modern CNC machining tools began as early as the late 1940s by John T. Parsons to produce wing sections for the United States Air Force. Today, the range of products made with these machines is vast. CNC machining tools produce highly specialized parts for machine and automotive industries around the globe. Other types of industries that utilize CNC machining tools are the woodworking and granite or stone industries.

 

The main component of CNC machining tools is the machine control unit. This unit reads and decodes instructions, generates axis commands and feeds motion commands to circuits that drive axis mechanisms. It also controls the spindle, coolant and tool change functions. Other components of CNC machining tools are a program input device, which installs a part program into the CNC control, and a part program, which controls the movement and functions of the machine.

 

Various types of machinery use CNC as a controller. A lathe or turning center is a common type of CNC machining tool. This type of machine is capable of performing various lathe-cutting operations automatically. Laser cutting CNC machining tools are another type, and use a focused beam of laser light to cut a wide range of materials.

 

CNC EDM machining tools operate by using a thin wire as an electrode. The resulting erosion caused by the arc is what does all the cutting. CNC controls the table movement, as the wire remains stationary during operation.

 

A machining center is the latest type of CNC machining tool. It is capable of performing various tasks such as milling, boring and drilling in a single setup. Pallets or worktables automatically exchange work pieces as needed. The machining center automatically changes tool heads to perform the specific tasks as needed.

 

OCEAN Technologies Co., Ltd. is the manufacturer of specializing in CNC EDM machines. We provide EDM machines include micro EDMs and CNC drilling EDMs…etc. If you are interested in learning further details about OCEAN’s EDM machine series, welcome to browse our website or contact with us directly to obtain more information!

 

Article Source: http://www.wisegeek.com/what-are-the-different-types-of-cnc-machining-tools.htm

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Small Hole Drilling Applications

The applications of EDM small hole drilling might be expected to be very limited in scope. Indeed, it would be difficult to think of a more innocuous phrase than small hole drilling, a phrase befitting a niche technology. But this belies the reality of EDM small hole drilling as a machining method used in many industries, industries that value precision and the characteristic of EDM to drill through very tough materials. Its use in gas turbines is the best illustration of what EDM small hole drilling can do in your industry.

 

Gas Turbines and Hole Popping

 

A gas turbine is a highly adaptable type of internal combustion engine that converts the impulse generated by the combustion of compressed air and fuel into useful work. How this work is harnessed determines whether a gas turbine is part of a power generator or a jet engine. A jet engine harnesses the jet of exhaust gases created by combustion for thrust, for example. Common to all gas turbine engines, however, is a turbine located downstream of the combustion chamber, which gives them one of their most important characteristics—they are self-sustaining. The compressor that allows for efficient combustion is powered by the electricity generated by the turbine. But for such a critical role, gas turbines are subjected to an extremely hostile environment of intense heat and centrifugal forces, and it is no surprise that the alleviation of this problem has been a major impetus in gas turbine development.

 

The primary limiting factor in gas turbine development has been heat, and research looking to alleviate the problem of heat has focused on two areas. One area is material science. Since the problem of heat was recognized, many cutting edge alloys have been developed that can resist both the heat and centrifugal forces found inside a gas turbine. But today, this is not enough. Temperatures in modern gas turbine engines can exceed the melting point of even these advanced alloys. This prompted the second wave of gas turbine development, which focused on cooling methods. One of the most prevalent cooling methods is called film cooling. In film cooling, air is directed through holes drilled on the surface of a turbine blade, creating a film on the surface of the blade that acts as a barrier to super-hot exhaust gases. Modern turbine blades combine advanced, adamantine alloys with cooling holes, to which only EDM small hole drilling is suited.

 

The characteristics that suit EDM small hole drillings to applications such as turbine blade cooling hole drilling are its ability to drill through very hard materials, an absence of machine tool pressure, and pinpoint accuracy. An EDM electrode never makes physical contact with its workpiece, which means that an electrode will work regardless of how hard the workpiece is. This lack of physical contact also eliminates machine tool pressure, which can prevent working on a delicate workpiece like a turbine blade, and create burrs and other deformities. This lack of machine tool pressure also contributes to the great accuracy of EDM small hole drilling. Below are just some of the applications of EDM small hole drilling. This list is not comprehensive, but only suggestive of hole popping’s great versatility.

 

Fuel Injection

 

Fuel injection has essentially supplanted carburetion in automotive engines. Due to the superior precision with which fuel can be delivered to a combustion engine, fuel injection engines boast superior fuel economy, less toxic emissions, and require less maintenance than engines using carburetion. A fuel injector uses very small nozzles to atomize gasoline or diesel fuel, ensuring a precise and predictable delivery of fuel. This is why EDM small hole drilling is the favored machining method. A lack of precision in the diameters of nozzle openings could hamper proper functioning of a fuel injector.

 

EXCETEK has manufactured small hole drilling EDM since 2006, the hole drillings have CNC series and for general purpose series. As a leading drilling machine manufacturer, we have a strong R&D team to keep improving our products to meet the highest standard of our clients. If you are interested in learning more applications and specifications about small hole drillings, welcome to contact with Excetek, we are looking forward to corporate with you.

 

 

Article Source: http://www.holepop.com/edm-electrode-tubing/small-hole-drilling-applications/

 

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