Do You Know About Machining Tungsten?
We know that tungsten has many valuable properties, such as extremely high melting point, low vapor pressure, low expansion and dimensional stability at high temperatures, excellent high-temperature mechanical properties and special electrical properties. It is these valuable properties of tungsten that make Tungsten has become a basic material in today’s high technology, an indispensable material in national defense construction and a material closely related to the quality of people’s lives. Therefore, tungsten has an important position and role in the national economy.
China is the world’s largest resource of tungsten, and it is also the largest producer of tungsten steel in the world. According to statistics from the Tungsten Carbide Association in 2003, the actual output of tungsten products reached about 2570 tons, accounting for 15%-16% of domestic tungsten product consumption. , Which shows that China’s machining tungsten has made considerable progress. At present, the proportion of tungsten products is relatively small, accounting for only 15%-16% of domestic tungsten consumption and about 13.9% of total tungsten exports, including machining tungsten alloy. Therefore, the proportion of high-tech, high value-added and tungsten application products is even smaller. This shows that China's tungsten deep processing links are still relatively weak and there is still a lot of room for development. Therefore, the development of tungsten products, especially tungsten materials The deep-processed products and technology of the company are of special significance to promote the development of China’s tungsten metal industry.
Let's talk about the processing flow and deep processing of tungsten metal first. You can see that this picture shows the processing flow of tungsten. This flow has three links. From the left, it is a product or tungsten product firing link. The link is the tungsten processing link, and the third link is the tungsten processing material product link. From the first link:
The focus of this report is mainly on the deep processing technology of tungsten products, that is to say, the technology of transforming processed materials, carbide plates, carbide strips, carbide rod, carbide bars, carbide wires, carbide pipes, etc., obtained from deformation processing into parts or components. See, what are the technologies and content of the deep processing of tungsten materials?
- First, the forming process involves bending different tungsten materials into various shapes. This is the forming process, including cold forming, hot forming, high temperature forming, and so on.
- Second, machining, as well as joining, including welding and other aspects, as well as surface treatment. Through the integration of the above several technologies, tungsten processing materials can be turned into required components or components for use.
Let's take an example. The heating element of the tungsten carbide plate is actually a synthesis of the above technologies. For example, if we want to shape the tungsten plate, we need to form a shape, and we need forming technology. Tungsten and tungsten must be welded together. Inside is a welding technology. To make tungsten into this shape, it needs to be cut by electric spark. So it is a product of various technologies. This drawing also reflects the technology of tungsten for heating elements. In addition to electrochemical cutting technology and In addition to the sheet forming technology, a tungsten wire mesh weaving technology is also added. The tungsten wire mesh weaving technology must be connected to the power source. It is necessary to weld the tungsten wire mesh and the electrical connection claws together by welding technology to form the entire tungsten The heating element of the wire mesh, this heating element is currently the highest component of the metal, so these things are a combination of different technologies.
Let’s talk about the main technology and analysis of the deep processing of tungsten materials. Let’s look at the forming and processing technology mentioned above. Tungsten products need to solve two major problems.
- First, the performance issues of materials, such as stress fracture, creep fatigue and other properties, are issues in material development.
- Second, material processing and forming technology. This is the topic we are going to talk about today. When we talk about tungsten forming, first of all we have to talk about the processing curve of tungsten forming. This curve reflects the ductility, brittleness transition temperature and High-performance curve of recrystallization temperature, deformation temperature of punching and bending, and thickness of tungsten plate.
Let's take an example. The heating element of the tungsten carbide plate is actually a synthesis of the above technologies. For example, if we want to shape the tungsten plate, we need to form a shape, and we need forming technology. Tungsten and tungsten must be welded together. Inside is a welding technology. To make tungsten into this shape, it needs to be cut by electric spark. So it is a product of various technologies. This drawing also reflects the technology of tungsten for heating elements. In addition to electrochemical cutting technology and In addition to the sheet forming technology, a tungsten wire mesh weaving technology is also added. The tungsten wire mesh weaving technology must be connected to the power source. It is necessary to weld the tungsten wire mesh and the electrical connection claws together by welding technology to form the entire tungsten The heating element of the wire mesh, this heating element is currently the highest component of the metal, so these things are a combination of different technologies.
Now let’s talk about the main technology and analysis of the deep processing of tungsten materials. Let’s look at the tungsten carbide forming and processing technology mentioned above. Tungsten products need to solve two major problems.
- First, the performance issues of materials, such as stress fracture, creep fatigue and other properties, are issues in material development.
- Second, the processing and forming technology of tungsten carbide materials. This is the topic we are going to talk about today. When we talk about tungsten forming, we must first talk about the processing curve of tungsten forming. This curve reflects the transition of tungsten ductility and brittleness. High-performance curves of temperature, recrystallization temperature, deformation temperature such as punching and bending, and thickness of tungsten plate.
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