There are some difficulties in the preparation process of wear-resistant cemented carbide small cylinders, and the following main problems need to be overcome:
- Precisely control the composition and particle size: The composition and particle size of cemented carbide have an important impact on its performance. Therefore, it is necessary to accurately control the content and particle size distribution of each component during the batching and mixture preparation process to ensure the performance and performance of the final product. quality.
- Control of grain growth during high-temperature sintering: During high-temperature sintering, the grains in the cemented carbide will gradually grow. If the grains are too large, the brittleness of the material will increase, affecting its wear resistance and service life. Therefore, factors such as sintering temperature, time and atmosphere need to be precisely controlled to obtain fine and evenly distributed grains.
- Reduce pores and defects: During the preparation process of cemented carbide, due to the influence of process conditions such as pressing and sintering, problems such as pores and defects will occur. These defects will affect the hardness and wear resistance of the material. Therefore, it is necessary to optimize the process conditions to reduce the pores and defects of the material as much as possible.
- Production efficiency and economy: The preparation process of wear-resistant cemented carbide small cylinders is relatively complex and requires multiple process steps and strict quality control, so the production efficiency is relatively low. At the same time, the cost of cemented carbide materials is also high, and production efficiency and economy need to be improved to meet market demand.
In order to overcome the above difficulties, researchers continue to explore new process technologies and raw material formulas to improve the performance and economy of cemented carbide. For example, adopting advanced pressing and sintering technology, adding new raw materials or optimizing the proportion of ingredients and other measures can improve the performance and quality of cemented carbide, increase production efficiency and reduce costs.
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