Jekit Car Brake Parts Full Floating Center Bell Bracket Bolts Kit

product description

Color oxidation process

The last production process of center bell and bracket is coloring, which uses "sandblasting and anodizing".
The function of sand blasting is the impact and cutting action of abrasives on the surface of the workpiece, so that the surface of the workpiece can obtain a certain degree of cleanliness and different roughness, so that the mechanical properties of the workpiece surface are improved, so the fatigue resistance of the workpiece is improved, and the fatigue resistance of the workpiece is increased. The adhesion between it and the coating extends the durability of the coating film.
Sandblasting uses external force to spray sand onto the surface of the workpiece to achieve the effects of coarsening, cleaning, decoration, etc. When the external force is compressed air, it is called dry sandblasting, and when it is water, it is called wet sandblasting. Electroplating is to coat metal on the surface of the workpiece by direct current, generally in an aqueous solution, where there are ions that need to be plated, the workpiece is hung with a cathode, and the metal plate needs to be hung with an anode. Anodizing generally refers to the oxidation of aluminum and aluminum alloys in sulfuric acid or other solutions. The workpiece is hung on the anode, the aluminum or lead board is hung on the cathode, and direct current is applied to obtain a porous, high-hardness, and good-insulating oxide film. . .
1Silica is also called silica, chemical formula SiO. There are two kinds of crystalline silica and amorphous silica in nature. Crystalline silica is divided into three types: quartz, tridymite and cristobalite due to its different crystal structure. Pure quartz is a colorless crystal, and large and transparent prismatic quartz is called crystal. If the crystals with trace impurities have different colors, there are amethysts, citrines and so on. Ordinary sand is fine quartz crystals, including yellow sand (more iron impurities) and white sand (less impurities and purer). In silicon dioxide crystals, the 4 valence electrons of silicon atoms and 4 oxygen atoms form 4 covalent bonds. The silicon atom is located in the center of the regular tetrahedron, and the 4 oxygen atoms are located on the 4 vertex corners of the regular tetrahedron. SiO It is a simpler formula that expresses the composition. It only expresses the ratio of the number of silicon and oxygen atoms in the silicon dioxide crystal. Silica is an atomic crystal. The diatomaceous earth that exists in nature is amorphous silica, which is the remains of diatoms of lower aquatic plants. It is a white solid or powder, porous, light, and soft solid with strong adsorption. Insoluble in water.

Reference picture