Curated with aloha by
Ted Mooney, P.E. RET
The authoritative public forum
for Metal Finishing 1989-2025
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Burnishing steel parts in Italy
Recently I was asked to produce steel parts ( Material : C 45) with burnishing from a client from Italy.
As per them " Burnishing" was effected by dipping the finished part in nitric acid for a while and then applying some branded coating which turned the finished parts black.
No dimensional change was observed.
Can anybody highlight this coating process what that client called it
" BURNISHING "
product manufacturer - Mumbai, Maharastra, India
2007
Hmmmmmmm. That's interesting. Never heard of that before. What you describe does not match the normal description of burnishing, which is a lapping process to produce a smooth shinny surface. Out of curiosity, I looked in the dictionary and it does say " to make brown". Hmmmmmmm.
AF Kenton
retired business owner - Hatboro, Pennsylvania
2007
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