The electric hoist hooks cannot be repaired. This is because the hooks are difficult to meet the original quality standards after repair welding. The stress generated during the welding process cannot be completely eliminated, and may occur cracks. When the cross-section wear of the hook reaches 10% of the original specification, it should not be used, the new hook should be replaced. When the hook meets the following scrap standards, it should be replaced with a new one:
1. The hook distortion is greater than 10°;
2. The hook wear degree is greater than the original 10%;
3. The hook indicates the occurrence of cracks;
4. The neck or dangerous section of the hook has plastic deformation;
5. The opening degree of the hook is greater than 15% of the original specification.
