Powder metallurgy is a processing method that uses metal powder as raw material and makes various products through pressing and sintering processes. Its main application fields are as follows:
Mechanical manufacturing:
Automobile parts: manufacturing engine valve seats, valve guides, piston rings, and transmission synchronizer gear ring, gears and so on. These parts have high precision, good wear resistance and self-lubrication, can improve the performance and reliability of automobiles.
• Industrial mechanical parts:
such as gears and bushings of various pumps, wear-resistant parts in textile machinery and printing machinery, etc. Powder metallurgy process can produce parts with complex shape and high dimensional accuracy, reducing subsequent processing procedures and reducing costs.
• Electronic information field:
Magnetic materials: Soft magnetic materials such as manganese zinc ferrite and nickel zinc ferrite are used in electronic components such as electronic transformers, inductors and magnetic heads. Permanent magnetic materials such as neodymium iron boron permanent magnets can also be manufactured and widely used in headphones, mobile phone vibration motors, hard disk drives, etc.
• Electronic packaging materials: '
used for manufacturing integrated circuit packaging shell, electronic components heat dissipation substrate, etc. The packaging materials made by powder metallurgy have good air tightness, electrical insulation and heat dissipation performance, can protect electronic components from the influence of the external environment, improve the stability and reliability of electronic equipment.
• Aerospace:
High temperature alloy parts: such as turbine engine blades, impellers, combustion chamber and other high temperature components. Powder metallurgy high temperature alloy has good high temperature strength, oxidation resistance and thermal fatigue resistance, can operate reliably under extreme working conditions, improve engine efficiency and performance.
• Lightweight alloy parts:
Aluminum-lithium alloy, titanium alloy and other lightweight alloy parts are prepared by powder metallurgy process, such as aircraft structural parts, landing gear parts, etc., which can effectively reduce the weight of aircraft, improve fuel efficiency and range while ensuring the strength and performance of parts.
Medical devices
• Artificial joints:
Powder metallurgy titanium alloy, cobalt-chromium-molybdenum alloy and other materials have good biocompatibility, corrosion resistance and mechanical properties, can be made into artificial hip joint, knee joint and other joint prostheses, can simulate the function and movement mode of human joints, improve the quality of life of patients.
• Dental restorations:
such as crowns, bridges, etc. Powder metallurgy technology can produce restorations similar to the appearance and performance of natural teeth, with good wear resistance, corrosion resistance and biocompatibility.
• Other areas:
• Hard alloy tools:
Hard alloy composed of hard phase such as tungsten carbide and titanium carbide and binder phase such as cobalt and nickel, which has high hardness, high wear resistance and high heat resistance. It is widely used in tool manufacturing for metal cutting processing, mining, wood processing and other fields.
• Filter materials:
Powder metallurgy porous materials can be used to manufacture various gas and liquid filter elements, such as air filters for automobile engines, oil filters, and liquid filtration equipment in chemical, pharmaceutical and other industries. The porosity and pore size can be precisely controlled according to different filtration requirements.
