Material: carbon steel, alloy steel
specifications: 0.5T, 0.75T, 1T , 1.5T, Platinum 3OT
color: red, yellow, white galvanized, black, etc., can also be customized according to customer requirements.
Eye sling hook usage and precautions
eye sling hook environmental conditions should be paid attention to when using with rigging, and rigging shall not be twisted or knotted. During the lifting process of the hook, it is strictly forbidden to impact and impact the objects to be lifted.
At present, the eye sling hook is generally forged single hook, and the cast hook is not allowed to be used on cranes. Eye sling hook is widely made of low carbon steel and carbon alloy steel.
The hook plays the role of connecting crane and heavy objects, and its maintenance work must be paid attention. For this reason, when the lifting height of the hook is stopper or the locking device of the hook fails or is damaged, it is absolutely not allowed to use it again. As for working without a certificate, leaders should be investigated for responsibility. In order to ensure safety, the hook should be inspected. When one of the following conditions is found, it should be scrapped immediately.
① cracks appear.
② wear amount of dangerous section according to GBl0051.2 manufacturing hook, not more than 5% of the original height; According to industry standards manufacturing hook, should be more than 10% of the original size.
③ The opening degree is 15% higher than the original one.
④ torsional deformation exceeds 10 degrees.
⑤ dangerous section or hook neck produces plastic deformation.
⑥ when the wear amount of plate hook bushing reaches 50% of the original size, core and cover should be scrapped.
⑦ when the wear amount of plate hook mandrel reaches 5% of the original size, mandrel should be scrapped.
It should also be noted that the above defects of the hook shall not be repaired.
The main method of inspection hook: generally, visual inspection is adopted, that is, careful observation with magnifying glass. If necessary, you can use coloring method or conduct flaw detection. The wear amount of dangerous section can be measured by caliper or caliper; The inspection of opening degree is that the size measured by caliper can be compared with the original size or the opening degree of standard hook. A simple and applicable method is introduced here: when the new crane hook is just used, a small hole is punched out on both sides of the hook body opening, and the distance between the two holes is measured and recorded. It is used to compare with the size of the hook after deformation in the future to judge the change of opening degree. Torsional deformation can be visually measured, or measured by steel ruler of the side. When accurate, it can be detected by lineation ruler on the platform. Items ⑤, ⑥ and ⑦ can be inspected visually or with calipers.
