Molybdenum Insert With Copper Shank

The Molybdenum insert with copper shank uses molybdenum as the electrode end, and the rod uses red copper or chromium zirconium copper to maintain the characteristics of high conductivity and high heat dissipation.

1. High electrical conductivity and high thermal conductivity. Molybdenum is a metal element with good electrical and thermal conductivity except for gold, silver, copper, and other metals.

Therefore, the molybdenum-copper alloy composed of molybdenum and copper has high electrical and thermal conductivity.

2. Low adjustable thermal expansion coefficient. Copper has a high coefficient of thermal expansion, while molybdenum has a very low coefficient of thermal expansion. Therefore, apply

The required lower thermal expansion coefficient can be made according to different composition combinations so that they can be combined with other materials.

Thermal expansion coefficient matching combination to avoid thermal stress damage caused by excessive thermal expansion coefficient difference.

3. Special high-temperature performance. The melting point of molybdenum is 2610 °C, while the melting point of copper is only 1083 cC.

When the temperature is high, it has good strength and certain plasticity, and when the temperature exceeds the melting point of copper, the copper in the material can liquefy

Evaporation absorbs heat and has a cooling effect (sweat cooling). This property can be used as a high-temperature material for special purposes, such as refractory

Nozzle throat lining for combustion temperature, electrical contacts under the action of high-temperature arc, etc.

4. Non-magnetic. Both molybdenum and copper are non-ferromagnetic metals, so the molybdenum-copper alloy is an excellent non-magnetic material.

5. Low gas content and good vacuum performance. Whether it is molybdenum or copper, its oxides are easily reduced, and their N, H, C

and other impurities are also easy to remove, so as to maintain extremely low outgassing under vacuum and have good vacuum performance.

6. Good machinability. Pure molybdenum metal itself is difficult to machine due to its high hardness and brittleness. The molybdenum copper alloy

Since the hardness of the material decreases and the plasticity increases after adding copper, it is conducive to machining and can be processed into parts with complex shapes.

Tip: Tungsten and molybdenum have similar electrical conductivities, but different thermal conductivities. The same size and shape generate comparable heat, but tungsten electrodes can reach higher temperatures because of the higher thermal conductivity of tungsten. Note that the lower the thermal conductivity, the higher the resistance.

The material used for the inlaid electrode is tungsten-molybdenum alloy, which has higher hardness and better wear resistance.

Copper inlaid tungsten electrode: copper inlaid tungsten electrode has the characteristics of long service life when welding copper wire, copper braided wire, copper sheet, copper electrode lug, and carbon brush holder; copper inlaid tungsten electrode has been widely used in motors and motor manufacturers. application.

Copper inlaid molybdenum electrode: The copper inlaid molybdenum electrode uses molybdenum as the electrode end, and the rod is made of red copper or chromium zirconium copper, which maintains the characteristics of high electrical conductivity and high heat dissipation.

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