Chain processing technology

1、Blasting: a kind of surface treatment, according to the need to use a certain diameter of steel shot sprayed on the surface of the parts, forming a uniform small crater, a chain to improve the surface fatigue strength. 2、Bluing: After heating to a certain temperature, the parts are cooled and saponified by the chemical aqueous solution of the chain to make the surface color of the parts blue. The appearance of the chain after blue treatment is beautiful, and it also has the function of rust prevention. The disadvantage is that the chemical water solution causes great pollution to the environment. 3、Phosphating: The parts are immersed in phosphating solution at a certain temperature to form a phosphating layer on the surface of the chain, which can make the surface color of the parts black or gray to improve the beauty of the chain and achieve the purpose of corrosion prevention. These phosphating solution can be recycled and lightly pollute the environment. 4、Nickel plating: Nickel plating layer is formed on the surface of the parts by spot plating or chemical nickel plating, which can make the chain beautiful and anti-corrosion. Nickel-plated chains are generally used in the open air. 5、Galvanized: Galvanized layer is formed on the surface of the parts by electroplating or chemical galvanizing, and the galvanized layer can not only make the chain beautiful, but also prevent corrosion. Nickel-plated chains are generally used in the open air. 6、Heat treatment: In the heat treatment equipment, various auxiliary media are used at high temperature to improve the structural organization and physical properties of the parts. 7、Carburization: After the parts are heated to a certain temperature in the heat treatment equipment and held for a certain period of time, carbon is infiltrated into the surface of the parts by passing through the medium containing carbon to improve the hardness and wear resistance of the chain. 8、Quenching: the parts are placed in the heat treatment equipment heated to a certain temperature, holding time, and then cooled in a different medium according to the requirements, so as to improve the hardness of the parts. 9、Tempering: After quenching, the parts are heated at a certain temperature in the heat treatment equipment and cooled after holding for a certain period of time. Parts through tempering can reduce quenching hardness, eliminate quenching stress, improve toughness. 10、Oil：The oiling of the chain can prevent the chain from rusting and make it more shiny. 11、Grease：Grease can prevent the chain from rusting and make it more shiny. (If it is inconvenient to use oil during maintenance, use grease) 12、Stainless steel: It is clean and hygienic without oiling and greasing. It is used in food industry. Lock chain, iron chain