基于螺线管原理的位移探测器用于完成型砂紧实率及铸型紧实度的快速检测。
A displacement sensor based on solenoid principle is used to measure green sand compactibility and mould compaction.
它的形成会阻碍型砂向深凹区的填充，使得深凹处砂型紧实度降低。
The formation of arch effects will bring the sand filling over the region of deep concavity hindered and the degree of compaction of molding sand at the deep concavity reduced.
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。
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.
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