As a qualified technician ultra-precision machine, we ho-mechanical skills assessment for employees is very concerned about all the new employees will be pre-job training and examination of our company, from time to time in the annual organization of technical assessment, the purpose is to make our technical level technicians in the industry of the time preceding, so our product quality is fully guaranteed, so that employees in the company can have self-improvement. Today we have to share with you a few simple questions about the assessment of ultra-precision machines. 1, please write to adjust the principle of reduction leveler? A: The reduction of large diameter pipes of smaller diameter pipe to a large amount of pressure; pressure pipe wall thickness greater than the thickness of the thin volume; cold straightening straightening tube heat pipe than the reduction should be large ; but specific data should be summarized in practical experience come. 2. Adjust the leveler people often large empirical, please write what factors do you think lead to the? A: The steel pipe straightening itself often affected by factors 1 and grade differences, manifested its elastic deformation and plastic deformation capacity is not the same, and this ability can not be monitored often have sex, there is no value at all. 2, pipe bending itself is not the same, then adjust the amount of deflection and pressure leveler not the same, and this bending and deformation quantization at each point generated a total length of pipe is not the same. 3, there is a value and the actual value system leveler displayed some differences, and this difference can only be adjusted by the operator to be amended.