The metal parts product industry also encounters many difficulties in the development process, such as single technology, low technical level, lack of advanced equipment, shortage of talents, etc., which restrict the development of the metal parts product industry. For this reason, we can improve the technical level of the enterprise. , The introduction of advanced technology and equipment, training of suitable personnel and other methods to improve the development of China's metal products industry.
Metal materials can be divided into two categories: iron and steel and non-ferrous metals (or non-ferrous metals). Iron alloys with a carbon content of 2% to 4.3% are cast iron, and iron alloys with a carbon content of generally 0.03% to 2%. For steel, in Fe-C alloy, a variety of alloying elements are purposefully added to improve the strength, hardness, wear resistance and corrosion resistance of steel. Commonly used alloying elements are Si, Mn, Cr, Ni, Mo, W, V, Ti, Nb, B, etc., have formed a variety of alloy cast iron or alloy steel.
Non-ferrous alloys can be roughly divided into: light alloys (aluminum alloys, titanium alloys, magnesium alloys, beryllium alloys, etc.), heavy non-ferrous alloys (copper alloys, zinc alloys, manganese alloys, nickel alloys, etc.), low melting point alloys (lead, tin, Cadmium, bismuth, indium, gallium, mercury and their alloys), refractory alloys (tungsten alloy, molybdenum alloy, niobium alloy, tantalum alloy, etc.), precious metals (gold, silver, platinum, palladium, etc.), rare earth metals, etc. Among them, the most widely used is aluminum alloy.
According to statistics, 71% of the entire structure of the Concorde supersonic aircraft is made of special aluminum alloys; high-speed trains, automobiles and other transportation vehicles have increasingly demanded aluminum profiles; more and more aluminum materials are used for architectural decoration. It is beautiful and corrosion-resistant; the amount of aluminum wires in power systems and household appliances exceeds copper wires; aluminum foil can be used for packaging food and cigarettes; aluminum alloy can also be used as capacitors.