Molybdenum has extremely low Vapor pressure under the operating temperature and pressure of vacuum furnace. Therefore, molybdenum parts have relatively little pollution to furnace workpieces or working materials, and transpiration loss will not necessarily constrain the service life of molybdenum high quality parts such as heating elements and insulation packages.

Molybdenum has extremely low Vapor pressure under the operating temperature and pressure of vacuum furnace. Therefore, molybdenum parts have relatively little pollution to furnace workpieces or working materials, and transpiration loss will not necessarily constrain the service life of molybdenum high quality parts such as heating elements and insulation packages.

Spot welding is actually a type of electric welding, which relies on the instantaneous high temperature of the current to dissolve the welded object onto another object in contact, and then weld it together. An electric soldering iron is a handmade soldering tool that requires heating the soldering iron tip to above 300 ℃ for effective soldering.