企業ニュース

Material of the stamping mold

The materials for making stamping mold are steel, carbide , steel carbide, zinc alloy, low melting point alloy, aluminum bronze, polymer materials and so on. At present, most of the materials for manufacturing stamping mold are mainly steel, commonly used mold working parts materials are: carbon tool steel, low alloy tool steel, high carbon and high chromium or medium chromium tool steel, carbon alloy steel, high speed steel, matrix steel ,carbide and so on.

2. Selection principles of stamping mold materials

In the materials used in the stamping mold, can be a variety of metal materials can also be a variety of non-metallic materials, these two types of materials mainly include carbon steel, alloy steel, cast iron, cast steel, carbide, low melting point alloy, zinc-based alloy, aluminum bronze, synthetic resin, polyurethane rubber, plastic, laminated birch board, etc.

The materials used for the manufacture of the mold are also very strict requirements. Not only requires the hardness, strength and wear resistance of the material to be very high, but also to have the appropriate toughness, and the quenching property is also very high, and the heat treatment is not deformation and quenching is not easy to crack and other properties.

In order to ensure the service life of the mold, it is necessary to select the mold materials reasonably and implement the heat treatment process correctly. The selection of the correct steel type and heat treatment process should correspond to the different uses of the mold, in addition, it should also be based according to its working state, stress conditions, the performance of the processed materials, production batch and productivity and other comprehensive factors, and should focus on the above requirements of the performance.

Scan and digitize the mold. The high-speed scanner and mold scanning system provides many functions needed from the model or physical scan to process the desired model, greatly shortening the development and manufacturing cycle of the mold. Some fast scanning systems, can be quickly installed in the existing CNC milling machine and machining center, to realize fast data collection, automatic generation of various different CNC system processing procedures, different formats of CAD data, used for the mold manufacturing industry "reverse engineering". mold scanning system has been successfully applied in the automobile, motorcycle, home appliances and other industries, and I believe that it will play a greater role during the tenth Five-year Plan period.

Electric spark milling and processing. Electric spark milling processing technology is also known as electric spark into processing technology, this is a kind of alternative to the traditional forming electrode processing cavity new technology, it is a high-speed rotating simple tubular electrode for three-dimensional or two-dimensional contour processing, so no longer need to make complex forming electrode, this is obviously a significant development in the field of electric spark forming processing. Foreign machine tools using this technology have been used in mold processing. This technology is expected to be developed.

Improve the standardization degree of stamping mold. The standardization degree of stamping mold in our country is constantly improving stage, although in the current stamping mold standard parts coverage has reached about 30%, but relative to other countries, especially developed countries or a big distance, the foreign developed countries of stamping mold is the coverage generally can reach about 80%.

Material quality and advanced surface technology. It is very necessary to choose high-quality materials and apply the corresponding advanced surface treatment technology to improve the life of stamping molds, such as choosing high-quality steel materials. The key to the performance of stamping mold steel is whether the heat treatment and surface treatment of stamping mold are more important. The future development trend of stamping mold heat treatment is the use of vacuum heat treatment technology. Not only to develop the surface treatment technology of stamping mold, but also to develop the advanced technology of vapor deposition (TiN, TiC, etc.), ion spraying and other advanced technologies.

The grinding and polishing of the stamping mold is automatic and intelligent. The quality of stamping mold surface can be said to the service life of stamping mold, stamping parts appearance quality of various aspects have great influence, research and invented the automatic, intelligent grinding method and polishing method to replace the manual operation method, which can improve the quality of the stamping mold surface, this is also an important development direction of stamping mold in the future

Develop the system of mold automatic processing. The development of stamping mold automatic processing can be said to be the long-term development goal of China's mold industry. The automatic machining system of stamping mold is mainly a reasonable combination of multiple machine tools, and is equipped with accompanying positioning fixture or positioning plate, which is quite complete; CNC flexible synchronization system is very complete, and a quite perfect monitoring and control system is set for quality.