Abstract:Abstract: When going to the enterprise to check/calibrate the weight, it is found that the cast iron weight is easily magnetized during use and handling, which affects the normal use and verification/calibration. Here is a brief introduction to the cast iron weight magnetic technical requirements, ferromagnetic material magnetization phenomenon, demagation principle. Recommended several commonly used degassing methods, and combined with the actual local conditions, make full use of existing equipment and tools for degassing, to help enterprises solve the problem of weight magnetization in the work.