Can the safety tongue of chain rigging be replaced without permission after it is damaged

In order to avoid the weight falling off, the hook of the chain rigging is designed with a safety tongue on it, so that it can play a certain blocking role when the weight is shaken. The tongue blade uses the self-locking principle of spring contraction, so as to ensure that there will be no decoupling accident during the lifting process.

The hardness and strength of the safety tongue of the chain rigging is far less than that of the hook body, so with the growth of the use of time, the safety tongue may be damaged and fall. Some people will choose to weld a new tongue on the hook after the safety tongue is damaged, in fact, this practice is not correct. Privately installed safety tongue can not do a good blocking effect, because the strength of the welding mouth is much lower than the original safety tongue. There is also a difference in its metal properties, and the self-installed safety tongue self-locking function will also be affected.