本文利用高速摄影直接观察的方法对射砂过程进行了研究，同时还对砂芯内的密度分布进行了测试。
This paper reports the result of direct observation of shooting process with high speed camera and the density distribution of the cores.
由于砂芯通常采用射芯的方法来制造，因此，了解射砂过程的机理，并且在此基础上对射砂过程加以控制，就显得至关重要。
Therefor, it is greatly significant to clarify the mechanism of sand blowing process so as to control the production of sand core.
为了获得优质的砂芯，必须对射砂过程有充分的了解。
To get quality cores, core shooting process must be well known.
分析Z8040射芯机用覆膜砂热芯盒法制作气缸体前后端面芯及其浇口砂芯优化设计方案。
The paper analyzes the design optimization of core box using coated sand in Z8040 hot box core shoot machine to make the cylinder block cores and sprue cores.
本实用新型所提出的砂芯结构，可简单而非常有效的解决铸造生产中射芯呛火的技术难题，提高铸件的成品率。
The sand core structure provided by the utility model can solve the difficult technique problems of core shooting and chocking in casting simply and effectively, and improve the yield of the castings.
本实用新型所提出的砂芯结构，可简单而非常有效的解决铸造生产中射芯呛火的技术难题，提高铸件的成品率。
The sand core structure provided by the utility model can solve the difficult technique problems of core shooting and chocking in casting simply and effectively, and improve the yield of the castings.
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