Research and Application of Remanufacturing Technology for 2250 Hot Continuous Rolling Cutting Head Flying Shear Crankshaft
After a long period of use,the crankshaft of the cutting head flying shear has defects in the installation parts such as bearings and bushings,resulting in a decrease in accuracy.Common defects include shaft diameter wear,bending,shaft diameter surface cracks,scratches,burns,roughness reduction,etc.These defects lead to the loss of flying shear function and the scrapping of equipment,but most of the waste crankshafts still have reuse value.By studying the crankshaft clamping method,the shaft end expansion sleeve holding clamping positioning processing technology can effectively solve the machining problem of crankshaft turning without process chuck and positioning reference hole.The performance of the remanufactured crankshaft is close to the original performance,and the manufacturing cost is only 30%～60%of the original.This process technology can provide reference for the processing of similar shaft parts.The application of remanufacturing technology of crankshaft is of great significance in saving resources,protecting the environment,enhancing economic value and sustainable development.
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