Steel pressure vessel welding procedure qualification conditions
Publish Time: 2016-10-27 Origin: Site
Steel pressure vessel welding procedure qualification of general provisions, you may have not been very clear, let's take a look at.
1, the welding procedure qualification should be based on reliable steel welding performance, and completed before the product welding.
2, general welding procedure qualification process are: welding process procedure and welding specimens and test, the test specimen and the specimen, determine whether welding joint has required the use of performance, make the welding procedure qualification report to assess the proposed welding process instructions.Welding procedure qualification test welds unit the correctness of the proposed welding process, welding unit capacity and evaluation.
3, the cross section of the penetration of T joint and the joint Angle, when unable to detect internal defects, and manufacturing units do not have enough ability to ensure that the weld penetration, should add production type testing of welding procedure qualification, confirmed by the dissection test can allows the welding products.
4 used equipment, instrumentation, welding procedure qualification should be in normal working state, steel, welding materials must conform to the corresponding standards, by this unit skilled welding workers have been using this unit welding equipment welding specimen.
The above is the welding procedure qualification for steel pressure vessel conditions of related introduction, hope can help to you.