Metal Finishing Processes


  Zinc Electroplating (rack):
    Clear, Black, or Yellow Iridescent finish
  Zinc Phosphate Coating (barrel):
    Dry to Touch Oil Finish
  Black Oxidizing (rack):
    Black Oiled Finish
  Electropolishing Stainless Steel
  Aluminum Anodizing (rack):
    Red, Blue, Green, Purple, Black, Gold/Yellow, Gray, or Clear Finish.
    Color hue can be varied slightly
  Aluminum Conversion Coating (rack):
    Iridite Yellow, or Clear
  Pickle & Oil of hot-rolled steel

SPECIFICATIONS


  Zinc Electroplating:
    ASTM-B-633
    QQ-Z-325
    Mil-T-12879
  Zinc Phosphate Coating:
    MIL-DTL-16232 Type Z
  Black Oxidizing:
    Mil-C-13924
  Aluminum Anodizing:
    Mil-A-8625 Type II
    BAC-5022
    AMS 2471
    AMS 2472
  Aluminum Conversion Coating:
    Mil-C-5541/Class 1A/Class 3
    ASTM B449-93
  Stainless Steel Electropolishing:
    EP 1019
  Stainless Steel Passivation
    QQ-P-35



INFORMATION FOR NEW CUSTOMERS


Many of our new customers have questions about our process and other options they are considering. Except for our Zinc Phosphate automated barrel line, we are a rack metal fishing company. Rack treatments dip parts while hung on a metal rack, and is best for fragile or complex objects that would be damaged in a rotating barrel.

Occasionally, customers have issues with the steel quality being used to make their parts. Large variations in steel grain structure and impurities affect the conductivity and reactivity of the metal. Spots of rust can also become an issue. This can cause patches of thicker and thinner electroplating or chemical coating beyond our control. When this is an issue, we will work with you to make sure you receive the best possible product.

Electroplating and electropolishing have limitations. Because current is flowing through the part, electroplating and electropolishing perform poorly on inner sections of a part. When plating a tube, for example, the outside will have a clean finish while the inside will fade from a poor plating thickness to no coating after about the depth of the hole diameter. Anodizing is able to go farther into inside parts due to the non-conductive layer it creates. Other processes, such as black oxide, are able to coat the inside of parts rather easily. Dead holes, or small holes where water is held in by surface tension, tend to hold the caustic chemicals in which they are dipped. To prevent this, we will plug screw holes and similar dead holes before plating.

If you have further questions for us, we would be happy to help.

Contact Us

Centrally Located

Located in the center of the US to reduce shipping costs

Proven Experience

Experienced staff will help you fill your product needs