When it comes to metal tungsten, most people's first reaction will be "the glowing filament in the light bulb". In fact, it is not. Tungsten is not only used to make cemented carbide, known as "the tooth of industry", but also used to make pure tungsten. Tungsten products or tungsten alloys.
Tungsten's ID card
Tungsten is a silver-white lustrous metal with a high melting point and high density. It is not eroded by air at room temperature, and its chemical properties are relatively stable. It is mainly used to manufacture filament and high-speed cutting alloy steel, and superhard mold, and is also used in optical instruments and chemical instruments.
Introduction to Tungsten Materials
The melting point of tungsten is the highest among all metal elements, the density (19.3 g/cm3) is very high, and the hardness of tungsten is also very high. For example, the hardness of tungsten carbide is close to that of a diamond. In addition, tungsten also has good electrical and thermal conductivity, a small expansion coefficient, and other characteristics, so it is widely used in alloys, electronics, the chemical industry, and other fields, of which cemented carbide is the largest consumption field of tungsten.
Tungsten metal is a typical refractory metal, which is difficult to form and difficult to process by metal 3D printing technology. The traditional manufacturing process for tungsten metal is to press tungsten carbide powder into the desired shape and then use a sintering process to increase the strength and density of the part. At present, a small number of companies on the market are exploring the manufacture of pure tungsten and tungsten alloys through the powder bed process-based electron beam melting (EBM) and selective laser melting (SLM) 3D printing technologies, both of which are direct metal 3D printing technologies.
Tungsten alloy sample display
The printed tungsten alloy parts have ultra-high density, hardness, good gloss and texture, good ductility and thermal conductivity, excellent electrical properties, high tensile strength, and a strong ability to absorb rays. Mainly used in aerospace, military defense, nuclear industry, industrial manufacturing and jewelry, and other fields.