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正确选择煤粉,其性能要求同时具有低灰分、高挥发分和高膨胀指数,以及具有合适的筛分粒度这一关键因素,以确保所生产的铸件没有机械粘砂缺陷和表面质量问题。通过仔细选择、安全操作和加工处理,煤粉仍然是一个优良的、简易的、经济的有效解决方案。煤粉在储存、加工和运输过程中易于调节,然后经过进一步的安全处理,最终被铸造厂使用。尽管煤粉有诸多不足之处,对于最终用户来说,它仍然是经济合算的。而且现代加工和筛分方法确保它在最佳条件下使用。
The correct choice of pulverized coal, its performance requirements at the same time with low ash, high volatile content and high expansion index, and has the appropriate sieve size of this key factor to ensure that the castings produced without mechanical sticky sand defects and surface quality problems. By careful selection, safe handling and processing, pulverized coal is still an excellent, simple and cost-effective solution. Pulverized coal is easy to adjust during storage, processing and shipping, and is then safely processed for use by the foundry. Despite the many pitfalls of pulverized coal, it is still economically viable for the end user. And modern processing and screening methods to ensure that it is used under the best conditions.