Objective:To study optimal cast in angles of metal liquid dring hyperspeed centrifugal force casting.
目的：探讨高频离心铸造过程中金属液体最佳铸入角度。
Because of great middle-speed adjustability, and relatively high brake force at slow speed, magnet systems are quite good for difficult casting situations like casting against winds.
由于在中速具有极好的可调整性，且相对高的制动力在慢速、磁力系统在困难的抛投环境下是相当不错的，比如逆风抛投。
It was indicated that the linear defect appeared after machining is not crack, it is the appearance of oxide film involved in the casting under the effect of external force.
结果表明，这种加工后出现的线性缺陷并非裂纹，而是卷入铸件的氧化膜受外力作用后在叶片表面的显现。
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