Couplings, also known as couplings, are mainly used to connect the drive shafts of various mechanisms. Due to different mechanical equipment, the functions of various couplings are slightly different. For example, on a forklift, the coupling is used to transmit transmission and drive. Power between the bridges.Couplings, also known as couplings, are mainly used to connect the transmission shafts of various mechanisms. Due to different mechanical equipment, the functions of various couplings are slightly different. For example, on a forklift, the coupling is used to transmit transmission and drive. Power between the bridges. Due to the short longitudinal dimension of the drive train, forklifts below 3t generally adopt a rigid connection structure, that is, bolts are used to connect the engine, clutch, transmission, coupling shell, and drive axle. It is also a rigid whole from the engine to the drive axle. The middle part of the whole adopts a gear coupling. For forklifts above 5t, universal joints are generally used due to the longer longitudinal dimension of the transmission system.The power is transmitted to the drive axle of the forklift via the coupling.

　　The heat treatment of the coupling is an operation technology that puts the metal or alloy in the solid range, through the organic cooperation of people, heat preservation, and cooling, so that the metal or alloy changes the internal arrangement to obtain the required function. The heat treatment of the coupling is a modern machine. In the industrial and metallurgical industries, it is an indispensable part to improve product quality and extend the service life of machine parts.

　　The heat treatment of the coupling is divided into preparation heat treatment (or pre-heat treatment) and final heat treatment (or post heat treatment). In modern industrial production, the heat treatment of the coupling has become an important technical regulation.This is due to the excellent mechanical functions of steel and certain alloys—high hardness, strength, elasticity, and wear resistance. In addition to obtaining the required chemical composition during smelting, it must be obtained through heat treatment afterwards. Therefore, in order to achieve the technical The above requirement is that we need to heat-treat the coupling in the process of producing the coupling.