Die Steel & Vacuum Heat Treatment News

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With the rapid development of industrial technology, the manufacturing industry at home and abroad gradually replaces the traditional cutting process with no cutting and less cutting process. Due to the high production efficiency, high consistency, low consumption and energy consumption, and high precision and complexity of using molds to produce parts in batches, it has been increasingly valued by various industrial production departments of the national economy and widely used. In the fields of machinery, electronics, automobiles, information, aviation, aerospace, light industry, military industry, transportation, building materials, medical care, biology, energy and other manufacturing fields, it has played a very important supporting role in my country’s economic development, national defense modernization and high-end services. It has also made important contributions to energy conservation and consumption reduction in my country’s economic operation. In order to develop the industry, molds must go first. Without high-level molds, there will be no high-level industrial products. Now, the level of mold industry has become an important symbol to measure the level of a country’s manufacturing industry, and it is also one of the important guarantees for a country’s industrial products to maintain international competitiveness. Therefore, the development of die steel as a basic material is very suitable.

Die steel is the most important technical and material basis for the die industry. Its variety, specification, performance, and quality affect the performance, service life, manufacturing cycle, and upgrading speed of industrial products and products are advanced, diversified, personalized, and The development of the value-added direction is of great significance, so the level and development of die steel have always been paid attention to by various countries.

Raising the purity of steel to a certain level can not only improve the original properties of the steel, but also endow the steel with new properties. In order to improve the purity of die steel, the secondary refining process is generally used abroad, mainly by means of vacuum furnace refining, electroslag remelting, vacuum self-consumption and other means to produce die steel, so as to improve the purity of the steel and reduce the harmful inclusions in the steel. content. Since the content of non-metallic inclusions in steel is reduced, especially the content of brittle non-metallic inclusions is reduced, the polishing performance of steel and the surface roughness are effectively improved, which is more important for high-grade plastic chess sets.

Most of the molds are stressed in multiple directions, so improving the isotropic properties of the steel, improving the transverse toughness and plasticity of the steel, and making it close to the longitudinal properties can greatly improve the service life of the mold.

Vacuum heat treatment is one of the important means for mold materials to obtain excellent performance. The quality of vacuum heat treatment directly affects the performance, service life and safety of various mold products. The factors affecting the service life of the mold are: design structure, forming and manufacturing process, selection of mold materials, vacuum heat treatment process and surface strengthening, lubrication and maintenance. Among the many factors of mold failure. About 70% of the failures are caused by improper mold materials and faulty vacuum heat treatment. It can be seen that the correct material and its vacuum heat treatment play an important role in improving the life of the mold.

Mold vacuum heat treatment is generally divided into three parts: preliminary vacuum heat treatment, final vacuum heat treatment and surface strengthening.

The mold preparation vacuum heat treatment process is constantly reformed and developed. Cyclic vacuum annealing process, vacuum normalizing process, process of eliminating chain carbide, high temperature double vacuum heat treatment process, rapid uniform fine vacuum annealing process, quenching and tempering instead of delayed fire process, rapid softening annealing process, etc., are all prepared in the mold played an important role in state processing.

The final vacuum heat treatment of the mold includes conventional vacuum heat treatment, vacuum low temperature quenching, vacuum high temperature quenching, etc. The specifications of vacuum tempering after vacuum quenching are also various. Vacuum heat treatment has the advantages of high quality, low energy consumption, no oxidation, etc., and has been widely used in vacuum heat treatment of molds. Exquisite vacuum heat treatment technology coupled with appropriate surface strengthening technology will better exert the potential of the material and improve the life of the mold.

Equipment selection: RVA series vacuum brazing furnaces produced by SIMUWU are high-quality products for vacuum heat treatment of tools and molds. Good temperature control accuracy and temperature control uniformity ensure the effective progress of the vacuum brazing process. SIMUWU specializes in the manufacture of vacuum furnaces, has more than ten years of relevant experience, and has a good reputation in the field of vacuum furnace manufacturing. The product line includes vacuum air quenching furnace, vacuum oil quenching furnace, vacuum brazing furnace, etc., which are widely sold in developed and developing countries.