What are the requirements for high-quality precision metal processing（2）

Second, the production and processing technology of precision metal processing

　　 (1) Drawing part drawings

The design analysis of parts and stamping dies analyzes the shape characteristics, specifications, precision standards, raw material dimensions and tensile strength of stamping parts based on the drawing of stamping parts, and uses available stamping machine specifications and mold processing conditions. Manufacture batches and other basic elements, and analyze the stamping processability of parts.

　　 (2) Clear process plan

The calculation of specific production technology parameters is basically based on the analysis of stamping process. From the aspects of equipment occupancy, difficulty level of mold processing and life level, ease of use and safety level, standardization analysis is performed to screen out the characteristics of production technology and mold design. With the key points, the content includes the characteristics of the process flow, the number of production processes, the sequence of operations and the composition form, etc., and clearly identifies the appropriate plan applicable to the current production standards.

　　 (3) Set production technical parameters

　　Production technical parameters refer to the data based on formulating the process plan, such as various forming coefficients (drawing coefficient, bulging coefficient, etc.), parts drawing specifications and their punching force, forming force, etc. There are two kinds of calculations. The first is that the process parameters can be calculated more accurately, such as the application rate of raw materials for parts layout, the punching pressure center, the workpiece area, etc.; the second is that the process parameters are only approximated, as usual Forming force for bending or deep drawing, flat specifications for complex parts and blanks, etc.

　　 (4) Select stamping machine tool

Determine the stamping machine tool according to the characteristics of the stamping process to be performed and the force and energy characteristics of various stamping machine tools, follow the specific principles of the deformation force, deformation work, mold closing height-to-width ratio and contour specifications required for stamping parts processing, and fit the company The current machine condition is to reasonably select the machine type and tonnage.

Air compressor pressure sensor processing　

　　 3. Selection of stamping oil for precision metal processing

　　 stamping oil plays a vital role in the stamping process. The excellent cooling characteristics and extreme pressure anti-wear performance have made a qualitative leap for the enhancement of the service life of the mold and the precision of the workpiece.

　　 (1) Selection of low-carbon steel stamping oil

When selecting stamping oil for carbon steel plate, the first thing to pay attention to is the viscosity of the drawing oil. The optimal viscosity is determined according to the production technology difficulty factor and degreasing standard.

　　 (2) Selection of galvanized steel stamping oil

Due to the chemical reaction with the chlorine-based additives, the galvanized steel sheet should pay attention to the problem that the chlorine-type stamping oil will produce white rust when selecting the stamping oil. It should be degreased as soon as possible after stamping.

　　 (3) Selection of stainless steel stamping oil

　　Stainless steel is a material that is easy to form and harden. It is specified to use tensile oil with high oil film strength and good sintering resistance. Generally, stamping oil with sulfur-chlorine mixed additives is used to avoid the problem of flashing and cracking of the workpiece while ensuring the extreme pressure characteristics.