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The use of Welding Stainless Steel

The use of Welding Stainless Steel

Do you know the best techniques for welding metal? That's like asking whats the best way to go fishing? This will depend on a lot of things, don't you think? Lots of things like which kind of stainless, what thickness, whats the application form, and for what industry?

1. Food Service. Most metal within the food service marketplace is 300 series stainless. Type 304 .063" thick stainless sheet metal to become exact. If you visit any Fastfood counter to check out all of the counters, shelving, cookers etc, you will observe it's all regulated made from welded metal sheet metal. Food service codes require 304 stainless-steel used in preparing food areas because it does not rust easily. All welds are supposed to be performed so never to trap bacteria and other crud. Back sides of stainless steel welds needs to be shielded with argon so that they are not sugared and full of pits which could trap bacteria like salmonella. All wire brushing carried out having a stainless brush and welds which aren't perfectly smooth ought to be blended smooth by incorporating kind of abrasive wheel and after that cleaned with alcohol.

Tig welding is actually always the most effective process since spatter and slag are absent. Tig welding rods should be 308L for welding 304 stainless. L is for low carbon because

Carbon isn't good in terms of corrosion resistance in stainless.

Tips for welding SS sheet metal : 1 amp per 1 a large number of thickness, maintain your hot tip with the filler rod shielded and snip it whether or not this gets oxidized, use chill bars made from aluminum, copper, or bronze whenever feasible. Filler rod should generally 't be bigger than thickness of metal welded. Keep bead width to a number exceeding Four times the thickness from the sheet. Use a gas lens style cup, a #7 or bigger. A 1/16 thoriated or lanthanated electrode will easily weld 16 ga .063" sheet. Keep electrodes and also sharp.

2. Aerospace. Metal alloys used in the aerospace and aviation industries can be a much more varied. There are lots of them. Austenitic stainless steels like 321, 347, 316, and 304 are routine, but so may be martensitic stainless grades like 410 steel , Greek Ascoloy, and Jethete M190. Another category of stainless utilized on commercial aircraft could be the Precipitation Hardening variety. A PH at the conclusion like 15-5ph, 17-4ph, 15-7ph, 17-7ph shows that the steel is precipitation hardening. Which means holding it at high temperature longer time permits the steel to harden. PH grades are often considerably more difficult to weld than the straight 300 series as a result of alloy elements and complex metallurgical reactions to heat while welding.

Tig Welding and automated plasma welding include the most often utilized processes.

Tips for Aerospace tig welding SS : Clean, Clean, Clean. Use as big a tig cup and possible 3/4 " --1". Use minimal heat and make use of any methods to prevent distortion (skip welding, fixturing, small beads) shield the rear side of all things you weld with argon using tooling, or hand made purge boxes.

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