Screw surface treatment methods have what you do not know
Often use the screw personnel, will certainly know the use of a long time, the surface will appear a layer of rust phenomenon, which is because of what! Or with the screw surface treatment method related to it! This we have to go to understand first, in order to make a decision, let us understand the following first.
Exterior nature whitening treatment: stainless steel in the processing process, through the rolled plate, tied edge, welding or perhaps through the artificial appearance of fire baking heating treatment, resulting in black oxide skin. This solid gray-black oxide skin is mainly NiCr2O4 and NiF two EO4 components, the general choice of hydrofluoric acid and nitric acid for strong corrosion methods to remove.
Oxidation skin treatment methods.
Sandblasting method: mainly using the method of spraying micro glass beads to get rid of the black oxide skin on the surface.
Chemical method: the use of a non-polluting pickling passivation paste and room temperature non-toxic cleaning solution with inorganic additives for dipping. Then reach the stainless steel nature of the whitening treatment intentions. After the treatment basically looks like nothing light color. This approach is more applicable to large, messy goods.
Rusty screws, respectively, the use of mechanical polishing, chemical polishing, electrochemical polishing and other methods can reach the role of mirror luster.
Stainless steel coloring gives stainless steel products in a variety of colors, adding color varieties of goods, and can improve the wear resistance and corrosion resistance of goods, what are the methods of coloring screws.
(1) chemical oxidation coloring method; (2) electrochemical oxidation coloring method; (3) ion stacking oxide coloring method; (4) high temperature oxidation coloring method; (5) gas phase cracking coloring method.
The above is the screw surface treatment methods, different screws, surface treatment will be different, this is its special features, after processing on, it will present a different effect.