• 2023-08-21
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• 5 Comments

Five requirements for improving the quality of die steel

When the mold steel is used correctly, it is also necessary to carry out regular maintenance on the mold steel. Carry out planned protective maintenance on the mold steel, and through the data processing in the maintenance process, prevent the mold steel in the production of possible problems, improve the maintenance efficiency.

(1) The design of the parts should be reasonable, and the best structural scheme should be selected as far as possible.
The designer of the part must take into account the technical requirements of the part and its structure must conform to the manufacturability and feasibility of the mold steel manufacturing.

(2) Mold steel design
This is the most important step to improve the quality of mold steel, need to take into account many factors, including the choice of mold steel material, mold steel structure usability and safety, mold steel parts of the machinability and mold steel maintenance convenience, these should be considered as far as possible at the beginning of the design.
The selection of mold steel materials should not only meet the requirements of customers for product quality, but also take into account the cost of materials and their strength in the set cycle, of course, but also according to the type of mold steel, the use of working methods, processing speed, the main failure form and other factors to select materials.
When designing the steel structure of the mold, it should be compact and easy to operate as far as possible, and it should also ensure that the steel parts of the mold have sufficient strength and stiffness; When the mold steel structure allows, the corners of the surfaces of the mold steel parts should be designed as rounded corners as possible to avoid stress concentration; For the concave die, cavity and part of the punch, core, can use combination or insert structure to eliminate stress concentration, slender punch or core, the structure needs to take appropriate protection measures; For cold die, should be equipped to prevent the parts or waste clogging device (such as: top pin, compressed air, etc.). At the same time, it is also necessary to consider how to reduce the impact of sliding mating parts and frequent impact parts on the quality of die steel caused by wear in long-term use.
③ In the design, it is necessary to reduce the scope of disassembly when maintaining a certain part, especially when replacing wearing parts, to reduce the scope of disassembly as much as possible.

(3) Manufacturing process of mold steel
This is also an important part of ensuring the quality of the mold steel, the processing method and processing accuracy of the mold steel manufacturing process will also affect the service life of the mold steel. The accuracy of each part directly affects the overall assembly of the mold steel. In addition to the influence of the accuracy of the equipment itself, it is necessary to improve the processing method of the parts and improve the technical level of the fitter in the process of the mold steel grinding to improve the processing accuracy of the mold steel parts. If the overall assembly effect of the mold steel fails to meet the requirements, the probability of the mold steel acting in an abnormal state will be increased in the test mold, which will have a great impact on the overall quality of the mold steel.
In order to ensure that the mold steel has good original precision - the original quality of the mold steel, in the manufacturing process, it is necessary to first choose a reasonable high-precision processing method, such as electric discharge, wire cutting, CNC machining, etc., and pay attention to the accuracy check of the mold steel, including the processing accuracy of the mold steel parts, the assembly accuracy and the comprehensive inspection of the mold steel accuracy through the test and acceptance work. In the inspection also need to choose high-precision measuring instruments as far as possible, for those forming surface curved structure of the mold steel parts, if the use of ordinary ruler, vernier card can not achieve accurate measurement data, then you need to choose a coordinate measuring instrument such as precision measuring equipment to ensure the accuracy of the measurement data.

⑷ Surface strengthening of the main forming parts of the die steel
This can improve the surface wear resistance of the die steel parts, so as to better improve the quality of the die steel.
For surface strengthening, different strengthening methods should be selected according to different uses of die steel. In addition, a kind of vacuum gold-plated corundum film technology developed in recent years, called FCVA, can form a layer on the surface of the parts and the matrix is unusually firm and very smooth and uniform dense protective film, this technology is especially suitable for the mold steel surface protective treatment, but also to improve the quality of mold steel is a significant method.

(5) The correct use and maintenance of die steel is also a major factor in improving the quality of die steel.
In recent years, the worldwide competition in the die steel manufacturing industry has become more and more intense, and the ability of enterprises to provide customers with personalized high-quality products in the shortest possible time with high efficiency and low consumption has become a sign of the competitiveness of enterprises.