Quality control and inspection methods in the process of sandblasting pipe pressing:
1, accurate selection of withholding mold
In the selection of molds, should not only be satisfied with the required to reach the required pressure, but also taking into account the gap after the mold gap.
2, check the size of the buckle
According to the structure, function and joint structure of the blasting tube, the compression rate should be verified and tested, especially for the first batch. According to the measured wall thickness of the hose, according to the selected compression rate calculated after the sleeve buckle the diameter of the buckle, and then the hydraulic test, joint pull test, check the sealing performance of the hose and the joint pull-off strength.
3, strict control of the appearance of quality
Pay attention to coordination with the control of sandblasting pipe joints buckle positioning size, to prevent the pressure joints and withholding position are not allowed. Try to avoid repeated withholding.