The tungsten crucible crack analysis is quite important. If the problem that the bottom of crucible easily cracks is not solved, it will directly affect the yield of the crucible. Although powder metallurgy method producing crucible has many advantages including greatly saving metal consumption and reducing production cost, there are still many technical problems to be solved such as the bottom of crucible easily cracking.

There are many factors, which can influence the welding effort of resistance welding, which is applied tungsten copper as electrodes, such as welding current, time, pressure, electrode shape and properties and workpiece surface condition.

What is tungsten crucible? It is made by turning and welding with tungsten rod, and produced from pure tungsten plate, tungsten sheet and pure tungsten rod according to relevant technology, many types of preparation methods are available. It has wide application in rare earth smelting, quartz glass, crystal growth and other industries, and plays an important role in modern industry.

There are four types of resistance welding, which can use tungsten copper bonded copper electrode as welding tip, spot welding, seam welding, butt welding and projection welding.