Automotive stamping die is a pressure processing method that uses a die mounted on a press to exert pressure on the material at room temperature to produce separation or plastic deformation, so as to obtain the required parts.

Automobile stamping die

Let's analyze the problem of automobile stamping die test!
1. Focus on mold steel material selection
This is the most important step to improve the quality of mold steel, need to take into account many factors, including: mold steel material selection, 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, not only to meet the customer's requirements for product quality, but also to take into account the cost of the material and its 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 die, cavity and part of the punch, core, can use combination or insert structure to eliminate stress concentration; Slender punch or core, in the structure of the need to take appropriate protective measures; For cold die, should be configured to prevent the parts or waste blocking device (such as: top pin, compressed air, etc.) At the same time, but also consider how to reduce the sliding parts and frequent impact parts, in the long-term use of wear brought by the impact on the quality of the die steel.
(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.
2. Pay attention to the processing accuracy of the manufacturing process
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 mold steel quality, in the manufacturing process, first of all, it is necessary to reasonably choose high-precision processing methods, such as electric discharge, wire cutting, CNC machining, etc., at the same time, attention should be paid to the accuracy check of the mold steel. Including the machining accuracy of the die steel parts, the assembly accuracy and the accuracy of the die steel through the test and acceptance work. In the inspection, it is also necessary to choose high-precision measuring instruments as far as possible, for those forming surface curved structure of the mold steel parts, if the ordinary ruler, vernier card can not achieve accurate measurement data, then it is necessary to choose precision measuring equipment such as coordinate measuring instrument to ensure the accuracy of measurement data.
3. Surface reinforced forming parts
This can improve the wear resistance of the surface 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 the mold steel, in addition, a kind of vacuum gold plated corundum film technology developed in recent years, can form a layer on the surface of the parts and the matrix combination is unusually firm and very smooth uniform dense protective film, this technology is especially suitable for the protective treatment of the mold steel surface. It is also an effective method to improve the quality of die steel.
4. Use and maintain the mold correctly
The installation and debugging mode of the mold should be appropriate, and the parameters of the CNC bending machine should be in line with the design requirements.
When using the mold correctly, it is also necessary to carry out regular maintenance of the mold, and the guide column, guide sleeve and other parts with relative movement should be often filled with lubricating oil; For forging die, plastic die, die casting die, etc., before each die forming, lubricant or mold starter should be sprayed on the surface of the formed part;
The planned protective maintenance of the mold and the data processing in the maintenance process can prevent the problems that may occur in the production of the mold and improve the maintenance efficiency.
​