- Joined
- Aug 5, 2008
- Messages
- 313
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Gents,
Can phosphoric acid (OSPHO) be used to remove light surface rust from 4130 parts? Does all of the mill finish have to be removed from 4130 tubing before priming with Stits epoxy? Some of the tubing recently received from Wicks (from Germany) has a very smooth dark mill finish. Can it be just roughed up a little with scotchbrite, then wiped with solvent prior to priming? Welds will be cleaned by blasting, but is it necessary to blast the entire length of every tube if the surface is clean and in good shape (no corrosion, scale or other discontinuities)? Any other tips or precautions for priming/painting 4130 parts? Thanks.
Can phosphoric acid (OSPHO) be used to remove light surface rust from 4130 parts? Does all of the mill finish have to be removed from 4130 tubing before priming with Stits epoxy? Some of the tubing recently received from Wicks (from Germany) has a very smooth dark mill finish. Can it be just roughed up a little with scotchbrite, then wiped with solvent prior to priming? Welds will be cleaned by blasting, but is it necessary to blast the entire length of every tube if the surface is clean and in good shape (no corrosion, scale or other discontinuities)? Any other tips or precautions for priming/painting 4130 parts? Thanks.
