Cemented carbide die tools are known as the "mother of industry" and occupy a very important position in modern production. How did the die tools come about? When did it happen?
(1) The development of social productivity provides a social foundation for the production of die tools. The use of die tools is to replicate objects of the same shape and improve the efficiency and quality of production. One of the founders of Marxism, German philosopher, thinker, and revolutionary Engels once said: "Once society has technical needs, this need will push science forward better than ten universities." When society At a certain stage of development, people have the need to use the same items in large quantities. After having the corresponding technology and tools, the die tools will be produced naturally.
(2) The discovery and use of copper provided a material basis for the production of cemented carbide die tools. Some scholars believe that the production of real die tools should be in the Bronze Age, 5000 to 7000 years ago, and it was a production of various types of copper as raw materials. The era of life tools and weapons, such as bronze mirrors, bronze pots, and bronze swords. At that time, the basic conditions for the production of cemented carbide die tools were already available, such as metallurgical technology, mass production, and processing workshops. However, die tools production at that time was still in its infancy, far from mature.
Cemented carbide die tools
The properties of cemented carbide die tools materials include mechanical properties, high temperature properties, surface properties, process properties and economic properties. The working conditions of various die tools are different, and the requirements for material properties are also different.
1. The cold work die tools requires high hardness and strength, and good wear resistance, as well as high compressive strength, good toughness and fatigue resistance.
2. In addition to general room temperature performance, hot-worked cemented carbide die tools must also have good corrosion resistance, tempering stability, high temperature oxidation resistance and thermal fatigue resistance, as well as a small coefficient of thermal expansion. And good thermal conductivity, the surface of the die tools cavity must have sufficient hardness, and it must be tough and wear-resistant.
3. The working conditions of the die-casting die tools are poor, so the cemented carbide die tools is required to have good wear resistance, heat resistance, compression resistance, and oxidation resistance.
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