... Suitable for precious metals such as gold, platinum, silver, copper, iron, stainless steel, aluminum and other metal smelting.The ... drill welding, such as word drill,horn drill welding.brass,copper,stainless steel pot and other materials hybrid welding.Melting/ ... are mainly used for the melting of steel, stainless steel, copper, brass, silver, gold, and aluminium materials, etc. 2. Melting ...