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| Additional Firearm Finishes |
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BLACK OXIDE
Commonly called 'blueing', this
process oxidizes metal surfaces to a corrosion-resistant, decorative finish. The matte black finish is produced by a chemical reaction
directly with the iron (Fe) in the steel to form the
black oxide of iron (Fe3O4). Robar uses the latest
chemicals containing new concepts in activators,
catalysts, penetrants, inhibitors and rectifiers. The
result is an attractive oxide-resistant finish on steel,
including low and high carbon steels, alloy steels or
hardened steels. Robar's process will not flake, chip,
peel, or create any dimensional change. In using the
latest technology in the Black Oxide process, Robar is
able to create a more corrosion-resistant,
abrasive-resistant, attractive deep black finish. Robar
also guarantees that all specifications will meet or
surpass all military, aeronautical and civilian
specifications. Robar offers all of these benefits at
cost-effective prices. This process restores your old
firearm to a like new condition. Please note Robar offers this finish in matte only - we do not offer polished or bright polished blued finishes. Mil-C 13924-C, Class 1,
Mil-Std-171(Ord) Finish 3.3.1.
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ELECTROLESS NICKEL
Electroless nickel has become popular as a finish
for firearms. Electroless nickel is economical,
attractive and will give years of maintenance-free
service. Robar confidently offers electroless nickel for
the following reasons:
1. Excellent resistance to
fingerprints, perspiration, petroleum distillates of all
types, gun solvents, gun cleaners and all powder
residue.
2. A slat-spray corrosion resistance
tolerance exceeding 1000 continuous hours per ml. thick
deposit.
3. Plating rate is predictable, permitting a
deposit of the exact desired thickness.
4. All
surfaces are equally plated with micro-smooth nickel.
This allows a natural low friction and lubricity
resulting in smoother gun operation and
reliability.
5. It rates 0.1 on the Taber Wear Index,
making it tougher than hard chrome. This is significant
in that electroless nickel provides a more wear
resistant surface.
6. Expansion and contraction of
the metal will not result in peeling of the nickel
deposit.
7. Electroless nickel will pass a 180 degree
bend test, as specified under Mil-C-26074A, without
peeling.
8. It is rated at Rockwell C53-56 in
hardness before stoving (Rockwell 68-70 being possible).
This means that plating of the wear surfaces alone will
extend the useful life of a firearm.
9. Adhesion for
this process is reported to be 30,000 to 60,000 pounds
per square inch.
10. Electroless Nickel is durable
and cost-effective, eliminating further investment
into future finishing for the weapon. |
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BLACKENING OF STAINLESS STEEL
Robar is able to blacken stainless
steel through the use of oxidizing type blacking compounds. This
process produces black coatings on stainless steel and
alloy steels by a "conversion" process. The chrome in
the stainless steel is involved in a chemical reaction
with the oxidizers in the solution producing
chrome-sulfide. The application of the black finish is
dependent upon the surface treatment of the steel. Bead
blasted surfaces will have a satin black appearance
while a surface blasted with aluminum oxide will be
matte in nature. Importantly, dimensional changes
involved in blackening are extremely small, less than
0.0001 Mil. This thickness of the black oxide type
coating ranges from 0.00006-0.0001 Mil depending on the
type of alloy being treated. Blackening of stainless
steel not only makes the weapon more attractive but adds
to its corrosion resistance (96 hours salt spray per
Mil-C-13924B) and aids in preventing galling, common in
stainless steel guns.
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PHOSPHATING/PARKERIZING
Phosphating, better known as
"Parkerizing", is a process involving the transformation
of the surface of the steel to a rust resistant
manganese or zinc phosphate. Modern chemicals for
phosphating are far superior to their predecessors.
Phosphating is a non-reflective, matte black finish that
resists corrosion and abrasion. The coating has a
sponge-like structure that entraps oil or other
corrosion resistant solutions producing an excellent
coating for firearms exposed to high humidity and/or
harsh environments. Phosphating will hide light
scratches, pitting or blemishes. Coating thickness of
the finish varies depending on the user requirement.
Phosphate coating applied by Robar will meet the
following requirements: DOD-P-16232 F, Type M Class 1, 2
& 3 and Mil-P-50002 A Type 1, Composition B.
DOD-P16232 F Type Z Class 1, 2 & 3.
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