copper sulfate
copper sulfate
(OP)
We are building a clad pressure vessel and the customer wants us to do a copper sulfate test where the clad surface has been removed for weld prep to check for clean base metal. Does anyone have a procedure or information on the procees to do this.





RE: copper sulfate
wire brush to remove all stainless
spray on the copper sulphate
all carbon steel surfaces should turn orange
RE: copper sulfate
any stainless steel surfaces still bonded to carbon steel will not change colors.
what you will be looking for is areas that do not change colors
the test is to verify all stainless has been removed 3/8" to 3/4" away from the weld surfaces
after welding and clearing all carbon steel NDE, you will do a clad restoration weld (overlay) and do nde on the stainless welding
RE: copper sulfate
RE: copper sulfate