In the general processing of precision parts, most of the materials we most commonly see are stainless steel processing, copper processing, aluminum processing, and iron processing. Then the precision parts processing factory will process various precision parts according to the customer's drawings or samples through lathe processing, milling machine processing, grinding machine processing and polishing, commonly known as hardware precision parts processing, such as those screws, motor shafts, car parts models, The mobile power shell, CNC shell, etc. are processed by hardware precision parts.
Let's talk about the polishing, oxidation, passivation, machining, rolling, tapping, and electroplating of the most common precision parts processing.
1. Polishing
The polishing principle refers to making the product bright and smooth through regular dissolution.
The method of polishing: using mechanical, chemical or electrochemical action to reduce the surface roughness of the workpiece to obtain a bright and smooth surface. It is a method of modifying the surface of the workpiece by using polishing tools and abrasive particles or other polishing media. .
2. Oxidation
Oxidation is divided into aluminum hard oxidation, die-casting aluminum oxidation, color oxidation, aluminum anodic oxidation, natural color oxidation, etc.
3. Passivation
The principle of passivation can be explained by thin film theory. Passivation is due to the interaction between metal and oxidizing substances. When acting on the metal surface, a very thin, dense, good covering performance, and firmly adsorbed on the metal surface are formed. film. Compared with the traditional physical sealing method, the passivation treatment has the characteristics of absolutely not increasing the thickness of the workpiece and changing the color, improving the precision and added value of the product, and making the operation more convenient;
4. Machining is commonly used in turning, planing, milling, and grinding.
5. Rolling teeth
Rolling is the use of two threaded rods to squeeze the workpiece to be processed, so that the surface of the part is pressed out of the thread.
6. Tapping
Tapping is a die, which is used to process or repair external threads. It has threads inside, which can be processed by hand or used on threading machines.
7. Plating
Electroplating is divided into rack plating, barrel plating, continuous plating and brush plating, which are mainly related to the size and batch size of the parts to be plated.