Poly Metal India

Tungsten-copper has unique material properties. A high level of temperature resistance is one of the most important advantages of tungsten, while the copper content increases the electrical and thermal conductivity.Tungsten copper (WCu) materials are used for arcing contacts in SF6 circuit breakers for high and medium voltage applications. At the heart of the switching chamber, WCu arcing contacts are exposed to extreme mechanical and thermal stresses. During arcing, the temperature can reach levels ≥ 20,000 K, for instance.
Specifications of Copper Tungsten :
Tungsten 80%-Copper 20%
Tungsten 70%-Copper 30%
Tungsten Copper alloy is an alloy composite of Tungsten and Copper which has the combination s of the excellent properties of Tungsten and Copper, such as heat resistance, aberration resistance, high density, excellent thermal and electrical conductivity. It is easy to be machine.
 
We Supply Tungsten Copper by Press, Sinter & Infiltration method with the tungsten content ranging from 50% to 90% by weight. The balance is copper.
1. Electrical Contact materials
Electrical contacts are subjected to extreme mechanical and thermal stresses during operation. For fractions of a second, temperatures rise to several thousand degrees as a result of the arcing. Only Tungsten Copper materials will stand these high temperature & aberration.
 
Tungsten Copper material has good resistance to arc erosion, mechanical wear, contact welding and good conductivity. They are usually selected for oil, gas, air or vacuum, devices. The contact surfaces will oxidize when switched in air. These press-sinter-infiltrate materials should only be considered for arcing surfaces in air when used as arcing tips, arc plates and arc runners. When switching with moderate contact arcing, the Tungsten Copper with a high copper content may give the lowest erosion. As arcing severity increases, the Tungsten Copper with the higher refractory content withstand arc erosion better. Tungsten Coppers are also used as arcing edges of selector switchblades in transformer tap changers.
 
2. Electrodes for Spark Erosion (EDM)
Tungsten Copper electrodes are best suitable material for electrical discharge machining (EDM) applications. It has excellent wear resistance, good metal removal rate and ability to retain good detail. It is used where speed and wear resistance are most important.
 
3. Resistance Welding
Tungsten Coppers are used for some spot welding application of low conductivity materials, and as die inserts for flash and butt resistance welding applications.
 
4. Heat Sinks
Modern computer processors like the 586 series and higher, generate a heat output per square centimeter similar to that of a household cooker surface. Tungsten-copper heat sinks and the processor fan remove the heat.

We are Supplier of Tungsten Electrode. Thoriated Tungsten Electrode are generally used for DC electrode negative or straight polarity applications. Thoriated Tungsten Electrode are used when arc welding with the Tungsten Inert gas (TIG) process or when plasma welding.
Tungsten
 
 
Selecting the correct tungsten electrode is important to getting high-quality welds and making your welding easier. Some important factors to be considered in making the right choice are type of power source (Inverter or transformer), material to be welded (steel, aluminum, or stainless steel), and the thickness of the material.
We offer the following premium quality tungsten, ground to a high quality finish. All tungsten is 7" long.
Pure Tungsten (TP) - Green Tip - Readily forms a ball on the end, and generally used with transformer-based power sources for AC welding of aluminum.
2% Thoriated Tungsten (TT2) - Red Tip - The most common tungsten currently being used, generally utilized for DC welding of steel and stainless steel and offers good overall performance. A drawback is that this tungsten has a low level radiation hazard.
2% Ceriated Tungsten (TC2) - Grey Tip - An excellent substitute for 2% Thoriated tungsten if you are using a transformer-based power source for DC welding. Popular for thinner materials because it requires less amperage to start. Offers a stable arc and can be used for both AC and DC welding with inverter power sources.
1 ½% Lanthanated Tungsten (TL15) - Gold Tip - Also a great substitute for 2% Thoriated tungsten. Offers good arc starting characteristics and longer life than 2% Thoriated. It can be used for both AC and DC welding with both inverter and transformer power sources.
2% Lanthanated Tungsten (TL2) - Blue Tip - The most commonly used, non-radioactive tungsten and also a great substitute for 2% Thoriated tungsten. It offers some of the best arc starting characteristics and longer life than 2% Thoriated, a good tungsten for pulsing or welding that requires frequent re-ignitions with a short weld cycle. Can be used for both AC and DC welding with both inverter and transformer power sources.
Quad Tungsten (Q4)-Light Green Tip, A great substitute for Thoriated Tungsten (Red Tip), that is our proprietary blend of four rare earth oxides. This tungsten works well on AC and DC processes, transformer and inverter machines. The electrode life is extended, keeps a sharpened point and non-radioactive.

In the range of our very high quality materials are also included these Ceriated Tungsten Electrode. These tungsten electrodes are one of the very efficient and functioning electrodes which are widely used and appreciated due to its high heat resistance and tolerance. We are known as one of the most reliable and trustworthy companies which are extensively engaged in the field of supplying, distributing and trading several kinds of supreme quality industrial equipments and machineries. These ceriated tungsten electrodes are available for our clients at a very economic range of prices.

Features:

• Desirable performance
• Excellent functionality
• Easy installation
• Wide application

• Diameter: 1.0 mm-20.0 mm
• Length: 150 mm/175 mm etc.