Does dual wire feed (85% Zinc; 15% Aluminum) metalizing inside an oil tank or vessel create hydrogen as it sacrifices itself in preference to the steel? And, if so, would that hydrogen, in the presence of sulfur, embrittle welds? I believe the answer is no, but I have an engineer who is concerned.
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Brian Dalder Forum Moderator 169 Posts
Re: Would welds be in jeopardy in the presence of a dual-wire feed?28 March 2011 at 1:29pmI am not an expert on thermal spraying and I am not sure what is meant by "does . . . metalizing inside . . . a vessel create hydrogen as it sacrifices itself in preference to the steel?" But if I understand the processes used, it seems there would be little chance of this being an issue. Substrate temperatures are low when using wire flame spray or two-wire electric arc thermal spray technology so existing weldments wouldn't be affected if proper welding procedures were used originally. Let me know if you find out something to the contrary.