Jump to content


Photo
- - - - -

Ww Ii " Arsenal Refinishes"


  • Please log in to reply
3 replies to this topic

#1 pat k

pat k

    Long Time Member

  • Regular Group
  • 149 posts
  • Gender:Male

Posted 27 February 2005 - 11:47 PM

e.
  • 0

#2 full auto 45

full auto 45

    Respected Member

  • Board Benefactor
  • 4585 posts
  • Gender:Male
  • Location:Looking over your shoulder right now
  • Interests:Thompson's, Any Machinegun, Harley's and scuba diving. In that order.

Posted 28 February 2005 - 08:21 AM

Let me try.
1- All guns, yes all guns, left the factory blued. Through the years the bluing process changed some. That is why some were darked and duller then others.

2- When a gun went back to be reworked at a arsenal, there were several, they would parkerize them to protect the gun from rust better. Again I believe that over the years, the process would change and that is why the color difference. Plus you have several locations an their "mixture" could be different.

3- The newer parkerized guns are a lighter Grey and will change as they age and get used and oily.

I could be wrong, but I'm sure someone will let us know. Now if you want all the metallurgy terms and processes, PK or someone like that can give all the details.
  • 0

#3 Hawkeye_Joe

Hawkeye_Joe

    Long Time RKI Member

  • Board Benefactor
  • 2486 posts
  • Gender:Male

Posted 28 February 2005 - 10:27 AM

I have read that the way that the greenish grey park was made was accidental. When the park was put on the guns had cosmoline applied too quickly and the interaction of the two caused the greenish hue.
  • 0

#4 LSU Tiger

LSU Tiger

    Long Time Member

  • Board Donor
  • 324 posts
  • Gender:Male
  • Location:Louisiana
  • Interests:Military weapons from the 1700's to present day, pipe smokig and collecting, straight razor shaving, collecting WW II US uniforms, weapons, and equipment. Thompsons, especially!

Posted 28 February 2005 - 06:29 PM

Some of it is the chemistry of the process. For example, M-1 rifles left WRA and Springfield with the same parkerized finish. However, WRA used a different chemistry than did Springfield. Different colors. But, to the inspectors, it met spec. Also, the heat treating effects the final color. Slides of M-1911A1s made by Colt sometimes have a two-toned slide. The actual chemicals used 60 odd years ago have been banned, something about one-eyed offspring... The "new" chemistry does the same thing to metal, but can be altered for color. The "Dulite" finished Thompsons were sand blasted to clean the surface and to elimate polishing off milling marks. The added benefit was to produce a semi-matte finish when dipped in the Dulite. Dulite, by the way, is a proprietary firearms finish that is still in use. It requires heating the solution to something like 350F and dipping the part for a period of time.
  • 0