When producing cut-resistant tungsten wire, ensuring its uniformity is a crucial link. Here are some key measures and suggestions to ensure that the diameter and performance of tungsten wire are uniform and consistent:
- Raw material selection and processing
High-purity raw materials: Select high-purity tungsten powder as raw materials to reduce the impact of impurities on the uniformity of tungsten wire. Impurities may cause uneven defects in tungsten wire during processing.
Particle size control: Strictly screen and grade tungsten powder to ensure uniform particle size distribution. Uniform particle size distribution helps to obtain uniform density and grain size during the forming process, thereby improving the uniformity of tungsten wire.
- Forming and sintering
Precise control of process parameters: During the pressing and sintering process, key process parameters such as pressing pressure, sintering temperature and time are accurately controlled. The stability of these parameters directly affects the uniformity and structural density of the tungsten billet, which in turn affects the uniformity of the tungsten wire during the subsequent wire drawing process.
Mold design: Design a reasonable mold shape and size to ensure that the tungsten billet is evenly stressed during the pressing process to avoid uneven deformation and stress concentration.
- Wire drawing process control
Optimize the wire drawing process:
Temperature control: Control the temperature during the wire drawing process to ensure the stability of the furnace temperature and die temperature to avoid uneven tungsten wire diameter caused by temperature fluctuations. Reasonable processing temperature is the key to ensuring the processing performance and winding performance of tungsten wire.
Processing rate and drawing speed: Control the processing rate and drawing speed to avoid excessive or too small processing rates that lead to uneven tungsten wire diameter. Under normal circumstances, the pass compression rate is controlled at 10%~25%. The compression rate can be appropriately increased (up to 40%) under the conditions of good lubrication, low drawing speed and appropriate taper angle of the wire drawing die.
Sufficient lubrication: Use appropriate lubricants and ensure sufficient lubrication to reduce friction and heat, protect the surface of the tungsten wire from damage, and help to obtain a uniform diameter.
Continuous monitoring and adjustment: Use a continuous monitoring device to monitor the diameter of the tungsten wire in real time during the wire drawing process, and adjust the process parameters in time according to the monitoring results to ensure the uniformity of the diameter of the tungsten wire.
- Post-processing and testing
Post-processing process: Clean and dry the tungsten wire after drawing to remove impurities such as oil and oxide on the surface, and improve the surface quality and uniformity of the tungsten wire.
Strict quality inspection:
Diameter measurement: Use high-precision measuring tools to accurately measure the diameter of the tungsten wire to ensure that the diameter uniformity meets the standard requirements.
Comprehensive performance testing: In addition to diameter measurement, the tensile strength and anti-sagging performance of the tungsten wire should also be comprehensively tested to ensure that its performance is uniform and consistent.
- Equipment maintenance and environmental control
Equipment maintenance: Regularly maintain and maintain the production equipment to ensure that the equipment is in good working condition and within the accuracy requirements. The stability and accuracy of the equipment have an important impact on the uniformity of the tungsten wire.
Environmental control: Keep the production environment clean and stable to avoid dust, oil and other impurities from polluting or damaging the tungsten wire. At the same time, control the temperature and humidity of the production environment to ensure the stability and uniformity of the tungsten wire during processing.
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