What welding material should be used for welding the furnace tube of HP-Nb and the tube seat of INCOLOY800H?

2017-03-17View Original

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What welding material should be used for welding the furnace tube of HP-Nb and the tube seat of INCOLOY800H?

Reply #22017-03-17

In our factory, the furnace tubes made of HP-Nb and the tube holders made of INCOLOY 800H are operated at a temperature of around 820 degrees. We are currently carrying out welding operations; some experts suggest using ERNICRMO-3 wire, while others recommend ERNICR-3 wire. Which one should be used?

Reply #32017-03-26

Use ErNiCr-3 welding wire, free of Mo (molybdenum); this wire is also known as Inconel82 wire. Fill the inside of the furnace tube with N, and use TIG welding, paying attention to the interlayer temperature.

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