I'm getting a black sooty coating with crustacean like bumps instead of copper in my flash copper setup. Any suggestions??
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Black soot on flash copper
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Re: Black soot on flash copper
could you give us more information on the steps that you are taking from start to flash copper. What kind of metal are you working with? YOu might have too many amps or the part is not clean enough.
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Re: Black soot on flash copper
Originally posted by flycould you give us more information on the steps that you are taking from start to flash copper. What kind of metal are you working with? YOu might have too many amps or the part is not clean enough.
agitation .Jim Eaton
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Re: Black soot on flash copper
Also sounds somewhat like what happens when your power is reversed. Are you sure you have positive to anodes, negative to part?--
Mike Caswell
Caswell Inc
http://www.caswellplating.com
Need Support? Visit our online support section at http://support.caswellplating.com
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Re: Black soot on flash copper
Material is mild steel
Process is clean, degrease, rinse, zincate, rinse, #4 pickle, rinse, zincate again, rinse, #4 pickle, rinse, flash copper
Part is a 2" round tube with a flange resulting in an area of 18sq in.
I have checked the leads for polarity and it is correct unless someone switched the colored nuts.
Thanks for all the help.
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Re: Black soot on flash copper
Originally posted by jlmccuanMaterial is mild steel
Process is clean, degrease, rinse, zincate, rinse, #4 pickle, rinse, zincate again, rinse, #4 pickle, rinse, flash copper
Part is a 2" round tube with a flange resulting in an area of 18sq in.
I have checked the leads for polarity and it is correct unless someone switched the colored nuts.
Thanks for all the help.Jim Eaton
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Re: Black soot on flash copper
I zincated in the hopes of gaining some corrosion resistance.
If I reduce the amps, I get an orange soot.
The surface has been prepared by glass bead blast and degrease. Definately passes water break. Part is 23 sq in.
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Re: Black soot on flash copper
Originally posted by jlmccuanI zincated in the hopes of gaining some corrosion resistance.
If I reduce the amps, I get an orange soot.
The surface has been prepared by glass bead blast and degrease. Definately passes water break. Part is 23 sq in.
your amps should be around 1.5 the copper plate should come out pink salmon colorJim Eaton
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Re: Black soot on flash copper
I didn't see if you have the flash copper at operating temp. the temp. is around 120 degrees. THis will help if your not heating up the solution. Make sure you have large bubbles also this will help with plating too.
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Re: Black soot on flash copper
Is the filter pump not supplying enough agitation? Should I add an aerator as well?
Also, if I don't get the black soot, I get an orange coating that looks like powdercoat before it is baked. Basically, it looks and feels just like the black, only orange.
I am getting some copperplate. When I glassbead the soot off I have a very faint copper color left.
Also, another question re flash copper. If I try to replate a part already coated with flash copper do I need a pickle process, or just degrease and rinse?
Thanks again for the help.
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Re: Black soot on flash copper
Im just guessing your probably using a small kit 1 to 5 gal right? If this is the case the pump sent with the kit is sufficient. The manual says 1 amp per 10 to 15 sq? make sure you are with in this parameter. You should not have to pickle again just degrees and rinse also make sure your anodes
are not closer then 3" form the partJim Eaton
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Re: Black soot on flash copper
You said the part was mild steel, but are you sure, because it sounds like you might have aluminum or pot metal. From the steps that you took the steel should have plated, but it could be one little step that could throw us off. Do the magnet test.
If the part is steel blast the part, polish it to a shine, make sure you have rubber gloves on before you degrees, degrees, water test, solution (flash copper) at 120 temp., make sure you have bubbles, set machine at 2 volts, connect part to neg. wire before you go in solution, put part on bus bar, after 30 sec. go to the proper amps for one min., then check part. Then get back with us and let us know what happened.
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Re: Black soot on flash copper
It would take alot of drag out from the zincate to contaminate the flash, and Yes I would plate a practice piece.
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