Bright-Dipping Brass
Our company has to make a major decision because we are going to try and replace the nitric acid (20%) bright dip line that we have used to clean brass fittings for the last 40 years.
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Q. Our company has to make a major decision because we are going to try and replace the nitric acid (20%) bright dip line that we have used to clean brass fittings for the last 40 years. It’s basically a large in-line basket dip system and runs eight hrs/day. Can you direct us to any good reference materials? We have been pulled in all directions with citric acid or peroxide cleaning and know about the “appearance” differences, but then it comes back to speed and, of course, our chemical supplier thinks we need to stick with nitric acid. We also need to consider that we run stainless steel parts through this for passivation, and the nitric does work well in cleaning flux from brass and copper brazed assemblies. Any suggestions you have would be appreciated. R.J.
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