What are the key points of manufacturing technology and equipment for tungsten steel round bars?

Tungsten steel round bar is an engineering material with excellent wear and corrosion resistance, widely used in aerospace, metallurgy, chemical industry, electronics and other fields. For the manufacturing technology and equipment of tungsten steel round bar, there are the following key points:

1. Preparation of raw materials: Choose high-purity tungsten powder as raw materials to ensure the quality of tungsten steel round bars. The grinding, drying and sieving processes of tungsten powder are demanding to ensure the fineness and purity of raw materials.

2. Mixing and extruding: The tungsten powder after grinding and drying is mixed with other alloy raw materials, such as nickel, copper, iron, etc. The mixed materials need to be evenly mixed to ensure the quality of tungsten steel round bars. The mixed materials need to be evenly mixed to ensure the uniform distribution of different components. The mixed materials are extruded through high temperature and high pressure process to form the original tungsten steel bar billet.

3. Sintering: The extruded tungsten steel billet is shaped and sintered. Sintering process is to heat the tungsten steel billet to a high temperature, so that the tungsten powder and other alloy raw materials undergo sintering reaction to form a dense tungsten steel bar.

4. Heat treatment: The sintered tungsten steel rods are heat treated to improve their mechanical properties and corrosion resistance. Commonly used heat treatment methods include annealing, quenching, quenching and tempering. Different heat treatment processes will make different changes in the properties of steel.

5. Rolling and stretching: Through rolling and stretching process, the heat-treated tungsten steel bar is further processed into the required diameter and length. Rolling reduces the diameter of tungsten steel bars and increases their density and texture. Drawing is the process of stretching a tungsten steel bar to make its diameter thinner and increase its hardness and tensile strength.

6. Grinding and polishing: some surface defects will be produced during the manufacturing process of tungsten steel round bars, after grinding and polishing treatment, to make its surface smooth, no cracks, and improve its appearance quality and processing performance.

7. Testing and quality control: During the manufacturing process, various tests are carried out, such as chemical composition analysis, metallurgical microscope analysis, hardness test, tensile test, etc., to ensure that the quality of tungsten steel round bars meets the standard requirements.

8. Surface treatment and coating: According to different application requirements, tungsten steel round bars are subject to surface treatment and coating to improve their corrosion resistance and wear resistance.

9. Process control and equipment improvement: In the manufacturing process of tungsten steel round bars, the production efficiency and product quality are improved through process control and equipment improvement. For example, optimising the sintering process parameters, improving the heat treatment performance of equipment, controlling the machining precision of equipment and so on.

10. Environmental protection: In the manufacturing process of tungsten steel round bars, attention needs to be paid to environmental protection and energy saving. Choose raw materials that meet environmental requirements, rationally use and recycle process waste to reduce the impact on the environment.

These key points are for the main aspects of manufacturing technology and equipment for tungsten steel round bars. Through reasonable process and equipment selection, high quality manufacturing of tungsten steel round bars can be achieved and meet the requirements of different industries for material properties.