What is this marking (1916 DWM)

Heinz · 01-18-2021, 08:28 PM

my understanding is the electroplating process takes two or three steps,, the first plate is copper, the second plating is nickel and the third plating is chrome. I do not know if that is still the process but it was once. So chrome was a step beyond nickel. Nickel has a softer look, more like silver, and I like it better, but it was cheaper.

DonVoigt · 01-19-2021, 11:04 PM

Quote:

Originally Posted by Heinz

my understanding is the electroplating process takes two or three steps,, the first plate is copper, the second plating is nickel and the third plating is chrome. I do not know if that is still the process but it was once. So chrome was a step beyond nickel. Nickel has a softer look, more like silver, and I like it better, but it was cheaper.

No need to plate chrome over nickel.
Copper is the base "coat" for either, then either nickel or chrome.

Chrome is harder and "shiny-er".

Nickel salts are more expensive than chrome salts- it's a volume thing- or was when lots of plating was being done.

The minor cost of the actual very small amount of metal, should not enter into the equation in the final cost of a plating job- unless it is a "marketing" driven way to make more $$.

Heinz · 01-20-2021, 12:00 AM

I checked Wikipedia and several other sites to see if "copper-nickel-chrome" is still used. "Copper Nickel Crome is still a common process for quality plating over ferrous metals.

http://www.verneschromeplating.com/index.html gives a nice take on it
and
from Wiki plating
Chrome plating[edit]
Main article: Chrome plating
Chrome plating is a finishing treatment using the electrolytic deposition of chromium. The most common form of chrome plating is the thin, decorative bright chrome, which is typically a 10-μm layer over an underlying nickel plate. When plating on iron or steel, an underlying plating of copper allows the nickel to adhere. The pores (tiny holes) in the nickel and chromium layers work to alleviate stress caused by thermal expansion mismatch but also hurt the corrosion resistance of the coating.

My point was dismissing "Chrome" as "Bumper guns" is clever but neglects the realities of the process. I own one chrome plated beauty and I will see if I can hunt up photos.

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01-18-2021, 08:28 PM	#1
Heinz User Join Date: Jun 2002 Location: Greenville SC Posts: 1,004 Thanks: 377 Thanked 411 Times in 180 Posts	my understanding is the electroplating process takes two or three steps,, the first plate is copper, the second plating is nickel and the third plating is chrome. I do not know if that is still the process but it was once. So chrome was a step beyond nickel. Nickel has a softer look, more like silver, and I like it better, but it was cheaper.

01-20-2021, 12:00 AM	#3
Heinz User Join Date: Jun 2002 Location: Greenville SC Posts: 1,004 Thanks: 377 Thanked 411 Times in 180 Posts	I checked Wikipedia and several other sites to see if "copper-nickel-chrome" is still used. "Copper Nickel Crome is still a common process for quality plating over ferrous metals. http://www.verneschromeplating.com/index.html gives a nice take on it and from Wiki plating Chrome plating[edit] Main article: Chrome plating Chrome plating is a finishing treatment using the electrolytic deposition of chromium. The most common form of chrome plating is the thin, decorative bright chrome, which is typically a 10-μm layer over an underlying nickel plate. When plating on iron or steel, an underlying plating of copper allows the nickel to adhere. The pores (tiny holes) in the nickel and chromium layers work to alleviate stress caused by thermal expansion mismatch but also hurt the corrosion resistance of the coating. My point was dismissing "Chrome" as "Bumper guns" is clever but neglects the realities of the process. I own one chrome plated beauty and I will see if I can hunt up photos.