ସମ୍ବାଦ

When determining whether the lifting hook needs to be replaced or repaired, strict standards and procedures should be followed to ensure the safety and efficiency of the lifting operation. The following is a judgment based on official language and professional standards.

1、 Appearance and Surface Inspection of Lifting Hook     

Firstly, conduct a visual and surface inspection of the lifting hook. Observe whether the lifting hook has obvious cracks, breaches, corrosion, peeling or sharp edges, which may indicate that the lifting hook has been damaged, affecting its strength and safety. According to the "Safety Regulations for Lifting Machinery" and relevant industry standards, any surface defects may cause stress concentration, thereby accelerating fatigue failure, and therefore should be dealt with in a timely manner.

2、 Assessment of Wear on Lifting Hooks    

Secondly, evaluate the wear and tear of the lifting hook. Use measuring tools such as vernier calipers to accurately measure the changes in the opening degree of the lifting hook, the wear of the dangerous section, and the torsional deformation of the hook body. According to national standards such as "Lifting Hooks", when the opening degree of the lifting hook increases by more than 10% compared to the original size (some special materials or designs may require 15%), the dangerous section wear reaches 10% of the original size, or the hook body twists more than 10 °, it should be considered as meeting the replacement standard. These values are determined based on the mechanical properties of the lifting hook material, usage experience, and safety margin, and have scientific basis.

3、 Perform Non-destructive Testing on the Lifting Hook    

In addition, regular non-destructive testing should be conducted. Use non-destructive testing techniques such as dye penetrant testing, magnetic particle testing, ultrasonic testing, or X-ray testing to inspect for hidden defects such as cracks and inclusions inside the lifting hook. These flaw detection methods can penetrate deep into the interior of the lifting hook and detect problems that are difficult to detect with the naked eye, which is crucial for ensuring the safety of the lifting hook. The cycle and specific requirements for non-destructive testing should be based on the usage environment and frequency of the lifting hook, and should be implemented in accordance with relevant standards or manufacturer recommendations.

4、 Test and Record of Lifting Hook Function     

Finally, conduct a functional test of the lifting hook and record the inspection results in detail. Ensure that the rotating part of the lifting hook rotates flexibly, with appropriate clearance and no jamming phenomenon. At the same time, check the technical documents of the lifting hook, including rated load, production date, maintenance records, etc., to fully understand its usage condition. For lifting hook that meet the replacement standards, they should be replaced in a timely manner, and the replacement time and reason should be recorded for subsequent tracking and management.

In summary, when determining whether the lifting hook needs to be replaced or repaired, multiple aspects such as appearance and surface inspection, wear assessment, non-destructive testing, and functional testing and recording should be comprehensively considered. Only by strictly following standards and procedures can the safety and reliability of the lifting hook be ensured, providing strong support for lifting operations.

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