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The lifting chain has been quenched.

2025-06-13

rizhi

Hoisting chains are the load-bearing components in lifting machinery and safe hoisting operations, subjected to significant tensile loads, impacts, wear, and possible corrosion. Quenching is an important heat treatment process in the manufacturing of chains, with the aim of increasing the hardness and strength of the chain material, thereby ensuring that the chain has sufficient load-bearing capacity, wear resistance, and fatigue resistance. Quenching achieves high hardness and strength by rapidly cooling (quenching) the high-temperature austenitic structure into a high-hardness martensitic structure.