After the welding of nickel alloy products, the quality of the welded products should be inspected to ensure the quality of the products. The inspection guide for the explosive composite strip with lined plate is similar, but plug welding is not suitable when using the latter. The proposed test points include the following:

In the lining process, the substrate must be cleaned and properly prepared to adhere to the thin metal lining. This point in the equipment renovation is extremely critical. Because in the case of modification, the substrate surface is often very dirty and accumulated pollutants.

It is essential that the macroscopic inspection of the weld is performed by a qualified welding inspector. Excessive grinding with coarse grinding wheel can reduce the thickness of alloy sheet lining to unqualified degree.

Plug welding can be done by pre - punching or gas - shielded metal arc spot welding. Pre-punched plug welding is generally required to cover welding, but it is optional for spot welding. Cover welds should be inspected as carefully and according to the same procedures as regular seam welds. The penetration depth of electric spot welding can be tested by periodic torsion test of small sample.

After the macroscopic inspection, all sealing and plug welds should be vacuum-box or double-leak tested. It is a good procedure to inspect the final weld immediately after welding. Due to the very short time delay, welding problems can be quickly detected and corrected.

The above is the content of welding work after nickel alloy welding. I hope it was helpful. If you have better suggestions or methods, please contact us.