weld etching chemicals

By Strongarc Date 07-21-2008 23:44

I am looking for any info that anyone might have in regards to weld penetration etching chemicals. I would like to know what you have found to work the best on mild steel, stainless steel and aluminum. What mixture or ratios and any good suppliers to purchase these from. I have heard that it is difficult to obtain certain types of acid. Any help would be greatly appreciated. Thanks

By RideKTM (*)

Date 07-22-2008 12:16

Get yourself a Lincoln Procedure Handbook of Arc Welding ( most of your local Lincoln reps will give you one if you ask ) it has all the etchant solutions listed for various steels, aluminum and stainless.

By jon20013 (*****)

Date 07-22-2008 15:12

Or lay your hands on an ASME IX, formulas are in the back for many alloys.

By swsweld (****)

Date 07-23-2008 03:15

ASME IX QW 470 Etching

You can use the search feature and type in etching for some info if you don't have the code book.

By RBeldyk (**)

Date 07-23-2008 20:09

Here is a procedure for low alloy steel

http://www.aws.org/cgi-bin/mwf/topic_show.pl?pid=33548;hl=etch