The Principle Of G80 Lifting Chain Heat Treatment

The principle of G80 lifting chain heat treatment 


The G80 lifting chain is an indispensable lifting device for lifting heavy objects. It is made of high-quality alloy steel and is 


strictly controlled throughout the entire process. Let's take a look at the heat treatment of the G80 lifting chain and it's 


principle:

 

G80 lifting chain commonly used heat treatment methods: annealing, normalizing, quenching, tempering, carburizing,


 nitriding, carbonitriding, boronizing. The aging treatment has artificial aging treatment and natural aging treatment.

 

Annealing: The workpiece is heated to 30-50 degrees above ac3. After a certain period of heat preservation, it is slowly 


cooled to 500 degrees with the furnace to cool in space.

 

Normalizing: Heating a steel piece to above ac3 or acm, and taking out an operation of cooling in air from the furnace after


 heat preservation.

 

Quenching: The steel is heated to above ac3 or ac1, and after cooling, it is rapidly cooled in a coolant such as water or oil, 


and unstable structure has been obtained.

 

Tempering: heat treatment of reheating the quenched steel to a temperature below ac1, cooling to room temperature after


 holding.

 

Natural aging treatment: The aging phenomenon that occurs when the workpiece is placed at room temperature or under 


long-term storage under natural conditions is called natural aging treatment.

 

Artificial aging treatment: an aging treatment process that heats the workpiece to a higher temperature and performs aging


 treatment in a shorter time, called artificial aging treatment.

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PINTEJIN Rigging lifting sling now has become leading enterprise in China. And we are creating the largest-scale and metal forging workshop.PINTEJIN has the complete production line from raw material to finished products. Each processing has independent workshop, making lifting sling, ratchet strap, car towing belt from 0.5T to 3000T. We are capable of finishing big order quickly.

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