The welds of large -diameter flange should be detected by 100%or rays. The surface of the large -diameter flanges cannot be crack or other defects that reduce the connection or strength of the flange disk. When the long -diameter large -scale flange plate is equal to the maximum allowable work pressure specified in the working pressure or greater than 0.8 times the standard, the welded welding of large caliber flanges and round tubes should be 100%X -rays. test. Reduce the wear of large -caliber flanges:
1. First of all, a reasonable mechanical design structure can help us reduce the pressure and wear between the surface of flange;
2. In addition, the material and thermal treatment process of flange also affect the overall quality of the flange;
3. Another, if the flange works in a dusty or polluted environment, the necessary dustproof devices and sealing devices should be added;
4. Of course, it is also indispensable to reduce the common method of mechanical wear, and the use of lubricants. For flanges, it can be treated with fluid static lubrication and fluid dynamic pressure lubrication;
5. You can also use more technical accuracy of magnetic suspension support to solve this problem.