|What We Do A variety of finishes for steel and aluminum||... tailored|
Zinc Phosphating Black Oxiding Vibratory Deburring Anodizing Hard Coat Anodizing
Zinc Phosphating ----------
This conversion process, applied to iron and steel alloys, serves as an excellent bonding agent for the retention of a rust preventative which will increase the corrosion resistance of the finished part. The primed surface will have a fine silky texture or crystalline appearance ranging from light to dark gray in color. Some advantages of zinc phosphate include: uniform coatings, absorption and retention of organic materials and resistance to galling when used against other surfaces. Parts which have not been heat treated or tempered could withstand salt spray tests up to 178 hours.
This coating, a conversion of the substrate surface to a black color, is typically used to enhance corrosion resistance on ferrous alloys. The black coating retains the original surface properties such as gloss from polishing or Rockwell hardness from heat treating. Other advantages of black oxide include: no dimensional change (.000005 thick), no chipping, absorbs oils or wax, survives heat (900 degrees F) and can be used in a variety of applications. Untreated parts could withstand salt spray hour tests up to 96 hours.
Steel, plastic or ceramic media are used in this process for improving surface finishes prior to electroplating, painting and other final finishing processes. Various types of mass finishing equipment (round vibrator, tub, centrifugal barrel, etc.) will generate a differential action between media and the parts. This action is what performs the uniform cutting, radiusing, smoothing, brightening or cleaning of the part.
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This unique finish on aluminum combines science and nature to form one of the best protective metal finishes known. Anodizing thickens and toughens the naturally occurring oxide on aluminum. The resulting anodic coating is part of the metal, but has a porous structure which allows secondary infusion (i.e. coloring, lubricate aids, etc.) Typical coating buildup ranges from .0002 - .0003 inch per surface. The dielectric properties of an anodized surface offer many opportunities for electrical applications. Each part must be individually racked which requires consideration for marks and coating voids.
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Hard Anodizing ----------
As an extension of regular anodizing, "hard coating" is an extremely durable finish that is integrated with the underlying aluminum producing total bonding and unmatched adhesion characteristics. Other properties of hard anodizing include: super long life span, resistance to outdoor conditions, easily cleaned, extreme hard surface and is heat-resistant to the melting point of aluminum (1,221 degrees F). Coatings are usually between .001 - .002 inch and have application in the engineering industry for components which require wear resistant surfaces such as pistons, cylinders and hydraulic gears. Parts are often left unsealed but may be impregnated with Teflon or waxes to meet desired specifications.
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