Bucket elevator One of the main components of a bucket elevator. The quality of the hoist chain directly affects the life and production efficiency of the hoist. What factors affect the quality of the lifting chain? Many years of production experience and application practice of roof hoist manufacturers are here to share with you:
Lifting chain materials: At present, the main materials used for the production of elevator chains are Q235, 20MN, 20GRMNTI, 25MNV, 40GR, etc. It is very important to choose the right high-quality alloy steel chain.
Heat treatment: High-quality steels must undergo a rigorous heat treatment process to achieve optimal mechanical properties.
Welding: The welding quality of the lifting chain directly affects the bearing tension of the chain.
Ring: The shape of the lifting link affects the degree of engagement between the chain and the lifting hook. Only a perfect engagement can extend the service life of the lifting chain. In welded chains, burns and cracks are often present in the arc of the chain link. We call it "big burn", which seriously affects the tensile strength of the hoist chain, so the occurrence of "big burn" must be avoided.
First, let's start with the reasons for the "Great Incineration":
1.The welding voltage is too low, and there is a short circuit phenomenon in the long-term flash process;
2.The amount of electric forging is too large;
3. The gap between the blank interface is too large, so that the preheating temperature is lowWhat are the problems in the design of bucket elevator for grain, oil, food, and chemical industry? Low combustion rate and short circuit;
4.The feeding current of the welding machine is unstable;
5.The error of the cam feed curve is too large.
After the above analysis, as long as the appropriate welding voltage and upsetting power-off time can be adjusted, the use of qualified cams and thyristors can completely avoid the "big burn" phenomenon of the hoist chain.