The growing thermal load of green sand, the quicker recirculation times and the increased requirements on the quality of molding material make new demands on the molding sand preparation.
潮模砂日益增长的热负荷，更快的循环时间以及对造型材料质量要求的提高，对型砂制备提出了更高的要求。
In renovation of the foundry shop, the original used sand suction system was dismantled, which caused lower quality of the molding sand.
在车间改造中，去掉了原有的旧砂吸送系统，而导致型砂质量下降。
Casting quality and rejection rate are remarkably affected by the quality and property of molding sand, in the process of clay sand green mold casting.
在粘土砂湿型铸造中，型砂质量和性能对铸件质量、废品率有明显的影响。
Finally, the conditions of molding sand for obtaining best quality castings are also provided.
在本文的最后还提出获得品质优良型砂的条件。
The surface quality of huge bore valves has been improved by changing the matches of molding sand, and increasing the hardness of sand mould and controlling the quality of the coal ash.
通过改进型砂配方，提高砂型紧实度和煤粉质量，是提高大口径阀门铸件表面质量的有效途径。
Such a testing method is of practical sense in realization of molding sand testing and foundry production management and casting quality control.
该测试方法的应用对实现型砂性能检测、铸造生产管理和铸件质量控制具有现实意义。
The high density green-sand molding has a high requirement for materials quality.
高密度湿型砂对原材料的质量要求很高。
With such ratio, rejection rate will be reduced and quality of molding sand and casting will be improved.
该配比可降低废品率，提高型砂和铸件质量。
It is the key to guarantee stable and consistent quality of clay molding sand in mass-production of sand castings.
稳定地保证粘土型砂质量是大批量粘土砂铸造生产中的关键问题之一。
It is the key to guarantee stable and consistent quality of clay molding sand in mass-production of sand castings.
稳定地保证粘土型砂质量是大批量粘土砂铸造生产中的关键问题之一。
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