The manufacturing process of tungsten wire needles is a complex and delicate process involving multiple steps and processes. The following is a detailed process of tungsten wire needle manufacturing:
1. Raw material preparation
The first step in manufacturing tungsten wire needles is to prepare the raw materials. Tungsten is a metal with high density, high melting point, high strength and high conductivity, so it is widely used in the manufacture of tungsten wire needles. Tungsten powder is usually used as the raw material, and tungsten rods or tungsten wires are prepared through methods such as pressing and sintering. These tungsten rods or tungsten wires have high purity and dense structure, providing the necessary raw materials for the subsequent manufacturing process.
2. Billet preparation
After the tungsten rod or tungsten wire is prepared, billet preparation is required. This step usually includes cutting, grinding and cleaning. First, the tungsten rod or tungsten wire is cut into billets of the required length. Then, the surface of the billet is polished using a grinder or other mechanical methods to remove burrs and defects and ensure a smooth and flat surface. Finally, the billet is cleaned to remove impurities and contaminants on the surface.
3. Deformation treatment
After the blank is prepared, deformation treatment is required to make the tungsten wire needle have the required shape and size. Deformation treatment includes multiple links, such as drawing, bending, straightening, etc. Through the treatment of these links, the tungsten wire needle can reach the required diameter, length and shape. During the deformation treatment process, the processing parameters and process conditions need to be strictly controlled to ensure product quality and stability.
4. Heat treatment
Heat treatment is an important link in the manufacturing process of tungsten wire needles. Its purpose is to eliminate the internal stress generated during the deformation process and improve the mechanical properties and stability of the tungsten wire needles. Heat treatment is usually carried out at high temperature. By controlling parameters such as heating speed, holding time and cooling method, the structural stability and dimensional accuracy of the tungsten wire needle are ensured.
5. Surface treatment
After completing the heat treatment, the tungsten wire needle needs to be surface treated to further improve its surface quality and performance. Surface treatment includes polishing, coating and coating. Polishing can remove surface defects and roughness and improve smoothness and flatness. Coating or coating can increase the corrosion resistance and wear resistance of the tungsten wire needle and extend its service life.
6. Inspection and packaging
After the surface treatment is completed, the tungsten wire needle needs to be inspected and packaged. Inspection includes appearance inspection, size inspection, performance inspection and other links to ensure that the product quality meets the requirements. For unqualified products, rework or scrapping is required. Finally, the qualified products are packaged to protect their quality and safety during transportation and storage.
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