Improving the cutting resistance of tungsten wire is a comprehensive process involving material selection, preparation process, surface treatment and other aspects. The following are some key measures:
- Material selection and optimization
High-purity tungsten powder:
Using high-purity tungsten powder as raw material can reduce impurities and crystal defects, thereby improving the strength and toughness of tungsten wire, and further enhancing its cutting resistance.
Alloying:
By adding an appropriate amount of alloying elements (such as rhenium, tantalum, etc.), the crystal structure and mechanical properties of tungsten wire can be improved, and its cutting resistance can be improved. The selection and addition of alloying elements need to be optimized according to specific needs.
- Preparation process improvement
Optimize wire drawing process:
During the wire drawing process, by controlling the drawing speed, temperature, tension and other parameters, the diameter and crystal size of tungsten wire can be reduced, thereby improving its strength and toughness. In addition, the use of multi-pass wire drawing process can further refine the grains and improve the cutting resistance of tungsten wire.
Annealing treatment:
Annealing treatment is an important means to improve the performance of tungsten wire. Through a reasonable annealing process, the residual stress inside the tungsten wire can be eliminated, the grains can be refined, and its plasticity and toughness can be improved. For cut-resistant tungsten wire, proper annealing can significantly improve its cut resistance.
Chemical vapor deposition and hot stretching two-step method:
This advanced preparation method can be used to obtain high-quality tungsten wire. This method forms a tungsten film on a substrate by chemical vapor deposition, and then obtains tungsten wire by hot stretching. The tungsten wire prepared by this method has the characteristics of high purity, uniform morphology, and excellent crystal structure, which is conducive to improving the cut resistance of tungsten wire.
- Surface treatment and coating
Surface polishing:
Polishing the surface of tungsten wire can remove burrs and tiny cracks on the surface, improve its surface finish and flatness, thereby reducing resistance during cutting and improving cut resistance.
Coating technology:
Coating a special coating (such as carbide, nitride and other hard coatings) on the surface of tungsten wire can significantly improve the hardness and wear resistance of tungsten wire, thereby enhancing its cut resistance. The selection of coatings and coating processes need to be optimized according to specific needs.
- Other measures
Optimize cutting tools:
Choosing appropriate cutting tools and cutting parameters, such as tool material, cutting speed, cutting depth, etc., can reduce damage to tungsten wire and improve its cutting resistance.
Use environment control:
During use, control the ambient temperature, humidity and other conditions to avoid the tungsten wire from being affected by adverse environments, so as to maintain its good cutting resistance.
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