Spiral plate heat exchanger quality control
Published on.
2022-12-20 11:35
1、Material selection: according to the heat exchanger use conditions (temperature, pressure, media, operating characteristics), material performance, manufacturing process and economic rationality.
2, each product preparation quality plan, control links and control points are specified.
3, personnel qualification control: welders hold special equipment operators qualification certificate and have the appropriate project. Non-destructive testing personnel hold special equipment inspector qualification certificate.
4、The manufacturing process implements process inspection to ensure that unqualified products do not flow into the next process.
5、The spiral plate is rolled in whole plate, the fixed pitch column is welded by studs, and the channel sealing welding is continuous gas protection welding.
6、The welds between the semicircular cylinders are 100% UT inspected to ensure the quality of the welded joints, and the welded joints between the pressurized components are inspected by surface non-destructive testing.
7、Each product undergoes hydrostatic test to ensure that the strength of each product meets the requirements.
8、The spiral plate heat exchanger within the jurisdiction of "Solid Capacities Regulation" is issued a pressure vessel supervision and inspection certificate by Suzhou Special Inspection Institute.
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