Electric hoist load chain heat treatment requirements is the key

Electric hoist  load chain  heat treatment requirements is the key


By the open-hearth steel load chain, electric or basic oxygen furnace smelting. Steel must be killed steel, weldability and cold resistance, and contains a sufficient amount of alloying elements, in order to ensure the chain hoist after appropriate mechanical properties after heat treatment.
        load chain is alloy steel. Chain allows manufacturers to stabilize during use, to prevent strain aging embrittlement, the content of aluminum alloy to be not less than 0.02%. Steel grain size was measured in accordance with BG 6394, should reach the austenite 5 or more.
        Wire rope hoist  lifting chain heat treatment is one of the most critical steps, lifting chain  heat treatment according to a detailed explanation: the chain shall withstand the heat treatment step in the manufacturing process completed before the test force test. All links should be 0.02dn carburized layer above the surface hardness should not be less than 550HV, core hardness is about 380HV.