Welding of stainless steel elbowsThe process is also very complex. If quality is not paid attention to, the requirements will not be met. So, what are the quality inspection methods for stainless steel elbow welding? Let's have the editor of Weili Huang introduce it to you all. I hope it can be helpful.

The quality inspection methods for stainless steel elbow welding are as follows:

1Non-destructive testing

Detect defects that are hard to see with the naked eye, such as slag, small openings, and fine holes. Nowadays, the general choiceX-ray(Also known as the Rontgen ray)To monitor the problem.

2Surface inspection

A more direct and rough method, however, can be assisted by a magnifying glass with a magnification of five to twenty times, which can detect defects on the surface of the elbow. Measuring tools can also be used to assist in detecting other indicators.

3Mechanical property tests of elbows

Non-destructive testing can detect defects in welds, but it cannot explain the mechanical properties of the metal in the heat-affected zone of the weld. Sometimes, tensile, impact, bending and other tests need to be conducted on the welded joint.

These tests were carried out by test boards. The longitudinal joints of the test board and the cylinder are welded to ensure consistent construction conditions. Then the mechanical properties of the test plate were tested. In actual production, only the welded joints of new steel are tested in this field.

4Hydrostatic test and pneumatic test

For pressure vessels that require sealing, hydrostatic tests and(or)Conduct a pneumatic test to check the sealing and pressure resistance of the weld seam.

The method is equivalent to work pressure(Mainly air)The working pressure of clean water or gas1.25to1.5Inject it into the container, let it stay for a period of time, then observe the pressure drop inside the container and the external leakage phenomenon. Based on this, it can be determined whether the weld seam is qualified.

Foshan Weilihuang Trading Co., LTDIt is a leading manufacturer and seller of stainless steel hardware accessories and self-owned brands. The stainless steel and its processing technology adopted ensure that there are no weld marks at the interfaces, featuring long-lasting durability. The company has always adhered to the tenet of quality and reputation, and is willing to make unremitting efforts to join hands with customers to create a win-win situation and provide quality products for partners.