Metal composite material refers to the composite material formed by metallurgical combination of various metals with different chemical and mechanical properties on the interface by using composite technology, which greatly improves the thermal expansion, strength, fracture toughness, impact toughness, abrasion resistance, electrical performance, magnetic performance and other properties of a single metal material, and is widely used in petroleum, chemical industry, shipbuilding, metallurgy, mining, machinery manufacturing, power, water conservancy, transportation Environmental protection, pressure vessel manufacturing, food, brewing, pharmaceutical and other industrial fields.