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　　Hooking group is a device used in lifting accessories for lifting and picking heavy objects. Whether the hook is used normally or not is very important for the overall structure. If the hook load is poor, it is very easy to cause heavy objects to be damaged. Therefore, whether it is a hook that is started to be put into use or a hook that has been used for a period of time, the load test should be performed. Next, we ask the hook group manufacturer to introduce it to you:

　　1. Load test method of hook

　　Using 1.5 times the rated load as the test load, the load suspension time is no less than 10 minutes, and the appearance should not be deformed and unable to recover after unloading.

　　2. Maintenance of used hooks

　　After using the hook for a period of time, the surface of the hook is often hardened due to the effect of the wire rope. To prevent this surface hardening, annealing can be done every six months to a year, but the temperature must be controlled according to the material, otherwise the hook metal grains will become coarse and affect the service life. For forged hooks made of No. 20 steel, the annealing temperature can be controlled at 500℃~600℃, and then slowly cooled after insulation, so that the steel structure will not change.

　　Hooking group is a device used in lifting accessories for lifting and picking heavy objects. Whether the hook is used normally or not is very important for the overall structure. If the hook load is poor, it is very easy to cause heavy objects to be damaged. Therefore, whether it is a hook that is started to be put into use or a hook that has been used for a period of time, the load test should be performed. Next, we ask the hook group manufacturer to introduce it to you:

　　1. Load test method of hook

　　Using 1.5 times the rated load as the test load, the load suspension time is no less than 10 minutes, and the appearance should not be deformed and unable to recover after unloading.

　　2. Maintenance of used hooks

　　After using the hook for a period of time, the surface of the hook is often hardened due to the effect of the wire rope. To prevent this surface hardening, annealing can be done every six months to a year, but the temperature must be controlled according to the material, otherwise the hook metal grains will become coarse and affect the service life. For forged hooks made of No. 20 steel, the annealing temperature can be controlled at 500℃~600℃, and then slowly cooled after insulation, so that the steel structure will not change.