The processing of black tungsten wire involves multiple stages, with wire drawing being the critical step in forming the tungsten wire.
1. Pre-Processing Equipment
- Beneficiation: Crushers, ball mills, jigging machines, shaking tables, and flotation machines, used to extract tungsten concentrate from wolframite ore.
- Smelting: Roasting furnaces, autoclaves, and reduction furnaces, used to produce tungsten powder.
- Powder Forming: Hydraulic presses, sintering furnaces, and rotary forging machines, used to press and process tungsten powder into tungsten bars.
2. Wire Drawing Equipment
The wire drawing process gradually draws tungsten bars into fine wires, with diameters reaching the micrometer level. The main equipment includes:
- Wire Drawing Machine: Multi-pass wire drawing machines (single-die or multi-die), categorized into coarse, medium, and fine drawing stages, used to progressively reduce the tungsten bar diameter to the desired specification.
- Wire Drawing Dies: Diamond or cemented carbide dies, ensuring precise wire diameter and smooth surface finish.
- Annealing Furnace: Hydrogen-protected annealing furnaces, used for intermediate annealing during wire drawing to relieve processing stresses and enhance wire ductility.
- Electrolytic Polishing Equipment: Polishes the wire surface to improve smoothness and electrical performance.
- Cleaning Equipment: Removes residual lubricants or impurities from the wire drawing process to maintain wire purity.
- Tension Control System: Ensures uniform tension during wire drawing to prevent wire breakage or deformation.
- Testing Equipment: Laser diameter gauges or similar devices, used to monitor wire diameter and surface quality in real time.
More details of tungsten wire, please visit website: http://www.tungsten-wire.com.cn/
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