Molybdenum Electrodes For Resistance Welding

Molybdenum electrodes for resistance welding are consumable parts of resistance welding machines. The working conditions of resistance welding electrodes are relatively poor. In addition to good electrical and thermal conductivity, the materials for making electrodes should also be able to withstand high temperature and high pressure. At present, the most commonly used electrode materials are copper and copper alloys. In special welding occasions, high temperature resistant powder sintered materials such as tungsten, molybdenum and alumina are also used. In resistance welding, the choice of electrode material and electrode shape directly affects welding quality, production cost and labor productivity.

The development of glass electric melting furnace has a lot to do with the development and development of suitable electrode materials. The requirements for electrode materials are as follows:

①Have sufficient mechanical strength below 1700℃.

②It will not be oxidized by air at least at 800℃.

③ It has electrical conductivity equivalent to that of metal.

④The contact resistivity with glass is low, and the expansion coefficient is low.

⑤ Has sufficient resistance to rapid cooling and rapid heating.

⑥Good wetting performance with glass liquid.

⑦Do not pollute the glass, and the structure is stable in various media.

⑧It is resistant to the erosion and erosion of glass liquid.

⑨ It contains very little impurities, does not work with refractory materials, and has a long service life.

⑩ Cheap price.

Molybdenum can basically meet the above requirements and has a wide range of applications. In addition to lead glass, it can be used to melt most glasses, such as refractory glass, glass with high viscosity, glass with high volatile components, etc. Molybdenum has no effect on other glass components. is stable. Currently, Molybdenum electrodes for resistance welding play a huge role in the glass melting process and are widely used to improve furnace design and glass quality. The development and utilization of Molybdenum electrodes for resistance welding have played a significant role in the utilization of the second energy in the glass industry.

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