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2012年11月28日星期三

Copper Tungsten Products of Chinatungsten

We use the best tungsten copper which is much stronger due to it being composed of an even sturdier alloy.
This sintered tungsten copper alloy may be used in heavy spot and projection welding projects. Our tungsten copper is manufactured metallurgically and contains 70-90% tungsten. The structure is smooth, very hard and has high elasticity. The most important reasons for Brouwer Metaal to work with tungsten copper is its unrivalled versatility. We use tungsten copper in our products, because it has a very high melting point and this results in a very stable and safe product. Additionally, tungsten copper is a very good conductor this allows it to be used in electrodes that you use in resistance welding.
The products designed by us, Brouwer Metaal, are guaranteed to have been tested thoroughly in relation to all international guidelines. This ensures a high quality product allows you to do your resistance welding with the greatest precision. The construction of this alloy permits a degree of reliability and makes sure that as customer you do not need to hesitate anymore whether the welding will break or not.
For more information on how to obtain this product you can consult our webpage or phone us at the number mentioned on our homepage.
More information can be seen by choosing in the menu on the top. If you would like to receive more specific information regarding our products, please fill in the form on the left.

Tungsten Copper Rod Chinatungsten Provide

We are very proud that we have offered more 1000 clients with thousands types expected tungsten products successfully from the year 1997. If you have any demand of tungsten & molybdenum, please let's know it without any hesitation, we'll try our best to assistant your complete the design, produce, machining, grounding & delivery ASAP. Also we promise you: We have neither minimum order, nor small customer, and we are not offering only our qualified products but also the designing, solution and the best service, prompt delivery at the most competitive prices for our motto is: Our Business Is Nothing But Your Success.
Chinatungsten Online are provide different sizes tungsten copper rods as following sheet:
Diameter
D2, D3,D4,D5,D6,D7,D8,D10,D12,D14,D15,D16,D18,D20,D21,D22,D25,D30,D35,D40,D45
Length
100, 200, 300

2012年11月26日星期一

Tungsten Copper for Low Voltage Electrode

Tungsten Copper for Low Voltage Electrode Contact Application
Low Voltage Electrode Contact Application-1
Automotive electrical contacts
Car electrical contacts are typically pure tungsten rod cutting, brazed tungsten the surface oxide layer, if long-term placement will produce automotive electrical failure phenomenon tungsten copper alloy rod to ensure that the contact has good electrical conductivity, resistance to arc erosion and oxidation-resistant performance.
Low Voltage Electrode Contact Application-2
Medical equipment with discharge board
The human crusher, pulse ray generator equipment in high-voltage, high-current discharge electrodes, tungsten copper alloy with copper one way of making, not only to ensure good electrical conductivity of the electrode, arc erosion resistance, and solve the electrodes connectivity issues.
Low Voltage Electrode Contact Application-3
The Overall Electrical Contacts
The arc current 380V contactors, switches, etc. used finger brazing copper and contacts connections occurred often in the process of using high temperatures lead to melting of the brazing layer to produce U-turn phenomenon. Tungsten copper produced by the method of the overall sintered integrally arc contact means to solve the above problems, and to reduce the production processes.
Low Voltage Electrode Contact Application-4
Other applications
Tungsten-copper alloy has a high melting point, high electrical conductivity and good ablation resistance; it can be used in many electrical fields.

2012年11月25日星期日

Copper Tungsten Tubing for EDM

Copper tungsten tubing can be used to EDM hole drill in all material types. Copper tungsten, because of it’s molecular composition tends to last longer during hole burning compared mostly to Brass.
One unique characteristic of copper tungsten is that it is ideal when small hole drilling through very hard materials such as Carbide and Tungsten. This is because it has a slower and more steady burn rate that will measure up stronger. When EDM holeburning through a depth to width ratio of greater than 100 to 1 this also tends to be ideal because a more controlled hole burn will leave a more accurate and straighter hole.
The Copper tungsten tubing that we supply is 99.995% pure.
Single Hole Electrode Tubes vs. Multi-Channel Electrode Tubes
Another variable which determines the ultimate success of the electrode properly EDM Hole Burning through the material or work piece is if the Brass Electrode or Copper Electrode tube has a “single hole” or a “multi channeled hole” running directly through the ID or (Internal Diameter) of the electrode.
Basically put; in order for an electrode to perform the way it’s supposed to, it depends on the type of hole going through the center of the electrode. This type of hole has a few purposes. One purpose is to direct water or coolant through the center of the electrode. This keeps the entire length of the Brass or Copper Tube from overheating and burning up. If the electrode heats up too much it can become “soft” and warp thus not creating a straight line or a consistent and accurate EDM Hole.
The main reason that determines whether an EDM Electrode tube would have a “single hole” or a “multi-channel” / “coreless” hole is that when a hole is EDM Machined into a part it could be a “thru hole” or a “blind hole”. Blind holes are not drilled complete to the other side so a “slug” or a piece of material is still left untouched at the bottom of the hole.

2012年11月22日星期四

Tungsten Copper for Instant High Temperature Material

Tungsten copper alloy, the copper content of the alloys in common for 10% to 50%.System alloy powder metallurgy method has a good electrical and thermal conductivity, preferably of high-temperature strength and certain plasticity. At very high temperatures, such as more than 3000 ℃, a copper alloy is liquefied evaporation, a large number of absorbing heat, reducing the temperature of the material surface. Therefore, such material is also known as metal sweating. Wider use of tungsten copper alloy, is mainly used to manufacture high voltage electrical arc ablation resistance switch contacts and the rocket nozzle throat insert, rudder and other high temperature components, is also used as the electrode electrically processing, high temperature molds as well as other requirements of thermal conductivity properties and high-temperature use of the occasion. First tungsten copper selection of fine tungsten, copper powder refined by leading soaked sintering process, can withstand nearly 2,000 high temperature and high stress, has a high melting point, high hardness, resistance to burning and good anti-adhesion, electrical erosion surface of the product finish high, very high precision, low loss. Tungsten and copper is widely used as a high-pressure, super-hydraulic switch and circuit breaker contacts, protection ring for electric upsetting anvil block material conductive Tsui, automatic submerged arc welding, plasma cutting machine nozzle, welding machines, welding machines welding head seam welding wheel the gas sealing Mao electrode and point spark electrodes, spot welding, touch welding materials.
The advantages of tungsten copper alloy combined of copper and tungsten, which include high-strength, high density, high temperature resistance, arc ablation, conductive electric performance, processing performance. High quality tungsten powder and oxygen-free copper powder, application isocratic pressing, to ensure the purity of the product, and accurate ratio, organized crime, performance arc breaking performance, good electrical conductivity, thermal conductivity thermal expansion. Tungsten copper material is a preferred material to meet the above requirements.

2012年11月19日星期一

Applications of Tungsten Copper Composites

Copper tungsten alloys are used where the combination of high heat resistance, high electrical and/or thermal conductivity, and low thermal expansion are needed. Some of the applications are in electric resistance welding, as electrical contacts, and as heat sinks. As contact material the alloy is resistant to erosion by electric arc. Tungsten copper alloys are also used in electrodes for electrical discharge machining and electrochemical machining.
The CuW75 tungsten copper alloy, with 75% of tungsten, is widely used in chip carriers, substrates, flanges and frames for power semiconductor devices. The high thermal conductivity of copper together with the low thermal expansion of tungsten allows thermal expansion matching to silicon, gallium arsenide, and some ceramics.
Copper Tungsten alloy with 70-90% of tungsten is used in liners of some specialty shaped charges. The penetration is enhanced by factor 1.3 against copper for homogeneous steel target, as both the density and the break-up time are increased. Tungsten powder based shaped charge liners are especially suitable for oil well completion. Other ductile metals can be used as binder in place of copper as well. Graphite can be added as lubricant to the powder.
The manufacturing process of Tungsten copper alloy is to press the refractory (tungsten or tungsten carbide), sinter the pressed compact at a high temperature, and infiltrate with copper. All of this is done under very closely controlled conditions. The mechanical and physical properties of Tungsten copper alloy vary with composition. The thermal and electrical conductivity increase with the amount of copper, while the hardness, strength, and resistance to mechanical wear increase with the amount of tungsten or tungsten carbide. The application determines the material choice.

2012年11月18日星期日

Tungsten Copper Rod for EDM


Our tungsten copper rod for EDM die and mould application has below advantage:
-High electrical conductivity bring very good erosion rate. Improve productivity.
-High hardness maintains long life time.
-High density characters present the lowest corner wear.
-Dia. 1mm rod bend demo shows our super infiltration process control capability.
Our tungsten copper rod for EDM die and mould application has below advantage:
-High electrical conductivity bring very good erosion rate. Improve productivity.
-High hardness maintains long life time.
-High density characters present the lowest corner wear.
-Dia. 1mm rod bend demo shows our super infiltration process control capability.