一、铸造用砂是铸品质量 和成本的重要因素 铸造工作者在提高质量减低成本的目标下;不但从铸造工业范围内,甚至从铸造范围以外,寻求和利用一切对铸造操作上有关的科学知识以达成这个目标。由於冶金知识和冶金技术的帮助价值很大,铸造工业范围内已经多方面以至完全的引用和依靠 First, casting sand is an important factor in the quality and cost of foundry Casting workers in improving the quality and reduce costs under the goal; not only within the foundry industry, and even beyond the casting range, to seek and make use of all casting science-related operations Knowledge to achieve this goal. Due to the great value of metallurgical knowledge and metallurgical technology, many aspects of the foundry industry have been quoted and relied upon