The key process parameters in the sintering process of tungsten carbide round rods include sintering temperature, sintering time and atmosphere.
- Sintering temperature: The sintering temperature of tungsten carbide is usually between 1200℃~1600℃. The specific temperature selection depends on the pressure and atmosphere during the sintering process. At high temperatures, tungsten carbide particles will diffuse with each other to form a dense metallurgical combination, and phase changes will also occur, affecting the performance of the material. Therefore, the sintering temperature must be strictly controlled to ensure that the tungsten carbide round rod has excellent performance.
- Sintering time: The sintering time of tungsten carbide is also a very important parameter. If the sintering time is too short, the sintering will be insufficient, and the bonding between tungsten carbide particles will not be tight, affecting the strength and hardness of the material; if the sintering time is too long, the tungsten carbide particles will be excessively diffused, and the size of the material will become larger, affecting its use. performance. Therefore, the appropriate sintering time needs to be selected based on specific production conditions and requirements.
- Atmosphere: Tungsten carbide easily reacts with oxygen at high temperatures, so the atmosphere needs to be controlled during sintering, usually using vacuum or inert gas protection. In addition, in order to achieve better sintering effects, reducing atmospheres, such as hydrogen, carbon monoxide, etc., are sometimes used.
In addition to the above three key process parameters, you also need to pay attention to details such as the selection and cleaning of sintering equipment, as well as the ratio and mixing uniformity of raw materials. These factors will affect the final performance and quality of tungsten carbide round rods. Therefore, in actual production, it is necessary to comprehensively consider various factors and strictly control various process parameters to ensure the quality and reliability of the final product.
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