First, the quality of the lifting chain itself has defects or problems: for example, the material of the lifting chain is brittle, the welding is not firm, serious wear and so on are the reasons that lead to the lifting chain is easy to break. Abnormal damage of materials and manufacturing quality: poor welding and heat treatment of ring chains are the main causes of chain breakage. Because the manufacturing quality and material are not up to the standard, the hoisting chain single link in the use of brittle fracture or plastic deformation fracture accident. The brittle fracture occurred in the welding joint or weld heat affected zone. The plastic deformation fracture occurs at the joint of the straight segment of the chain ring and the ring, which is subjected to great shear stress. Mainly due to the material, heat treatment problems. Chain fall into the iron: easy to twist the chain, resulting in broken chain.
Ii. The use of lifting chain does not meet the safety requirements: for example, the chain is too tight or too loose, over-load lifting, the chain jumps out of the slot, yanking and so on May lead to lifting chain fracture.
Three, the lifting chain maintenance and maintenance, overhaul is not in place: for example, not placed in a dry and ventilated place so that the chain rust, not timely filling lubricating oil and corrosion occurred, the use of unqualified lifting chain without paying attention to the inspection before use, these are the problems need to pay attention to.
1. Usage: Some operational details during use will also affect the service life of the chain.
Try not to throw the chain at random.
2. Pull the chain so hard that the tension is greater than the breaking tension. It is recommended not to exceed the working requirements
3 do not stay, not only dangerous, but also easy to cause the chain distortion and deformation of fracture.
Two, maintenance: if not regular maintenance, no matter how good the G80 lifting chain is also easy to break early;
1. Wipe the surface of the chain clean before lubrication to prevent the chain from rusting.
2. Keep away from damp or acidic odors.
3. Store regularly to prevent the occurrence of knots between the chain phenomenon.
