Black oxide is a conversion coating formed by a chemical reaction formed when parts are dipped into an alkaline salt solution.
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Is the largest black oxide shop in the continental united states.
Machining polishing buffing line graining and abrasive blast all play an important part in achieving a desired shade or.
If rust or scale is present on the part additional steps such as acid pickling or alkaline de scaling may have to be added before oxiding.
Was the first metal finishing and fastener sorting company in the u s.
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Our services include processess such as black oxide finishing phosphate coating passivation ndt blasting and deburring.
With almost 30 years experience in plating and passivating processes we are confident you will be satisfied with our exceptional workmanship and unmatched turnaround time.
We have specialized in black oxide for over twenty five years.
Black oxide coating process applies to ferrous non ferrous brass and copper alloy.
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Offers several different types of metal finishings and coatings to suit the needs of our customers.
Black oxide is a conversion coating formed by a chemical reaction produced when parts are immersed in the alkaline aqueous salt solution operated at approximately 285 degrees f.
With over 100 years of combined experience our management team focuses on one priority.
The reaction between the iron of the ferrous alloy and the hot oxide bath produces a magnitite fe o4 on the actual surface of the part.
L l metal finishing is the leading black oxide plating shop in southeastern wisconsin.
For over a decade k j finishing formerly northern illinois metal finishing has been a constant force in the finishing industry providing quality plating solutions on time and on budget.
Black oxide does not effect the dimension of the part.
Though standard black oxide is set up for steel it can be done on other substrates including stainless steel copper and brass among others.
A black oxide conversion coating is applied to ferrous alloys when oxidizing salts react with the iron to form magnetite fe 3 o 4 the black oxide of iron.
The black oxide is a true conversion coating converting iron to the naturally occurring black iron oxide compound called magnetite.
Other names for black oxide are.