What is the tungsten alloy powder metallurgy process?
Tungsten alloy powder metallurgy is the production of powder or metal powder (or a mixture of powder and non-metallic powder) as raw materials, and through and, to make metal materials, composite materials and various types of industries. Powder metallurgy is widely used in transportation, electronics, aerospace, weapons, biology, new energy, information, nuclear industry and other fields, and has become one of the most dynamic fields in new material science. Tungsten alloy powder metallurgy has considerable advantages such as energy saving, saving, characteristics, precision and stability, and is suitable for large-scale production. In addition, materials and complex parts that cannot be traditionally cast and prepared can also be fabricated by powder metallurgy, thus attracting industry attention.
The generalized tungsten alloy powder metallurgy industry includes iron and stone tools, cemented carbide, magnetic materials, powder metallurgy, etc. The narrow tungsten alloy powder metallurgy industry refers to powder metallurgy, powder metallurgy parts (most of them), oil bearings, metal injection, etc.
The process of tungsten alloy powder metallurgy is basically as follows:
1. Production of tungsten alloy powder metallurgy raw material powder. Traditional pulverization can be roughly divided into two categories: physical and chemical. Can be divided into crushing and atomization. Physical chemistry is divided into electrochemical corrosion, reduction, chemical, reduction-chemical, vapor deposition, liquid deposition, electrolysis and so on. Among them, reduction, atomization and electrolysis are widely used.
2. Use the required blank powder. The aim is to make sized to have and strength. Basically divided into pressurized and non-pressurized. Commonly used in pressurization. Embryos can also be made using 3D printing.
3. Billet. It is the core of tungsten alloy powder metallurgy. Judgment is divided into unit judgment judgment and judgment judgment. For the solid phase of the unit system and system, the temperature is lower than that of the metals and alloys used. For the liquid phase of the system, the temperature is generally lower than that of insoluble components and higher than that of easily soluble components. In addition to general, there are special processes such as invoice, dipping, and hot pressing.
4. Post-processing of tungsten alloy powder metallurgy. Post-processing can take a variety of forms depending on the requirements. Such as finishing, water immersion, heat treatment, electroplating. In addition, in recent years, new processes such as rolling and forging are also applicable to powder metallurgy materials, and have achieved relatively ideal results.
