分析了不同D/S值的厚、中、薄壁管在A SSEL轧管机上的螺旋变形特征和壁厚精度。
The characteristics of spiral deformation on ASSEL mill and wall thickness accuracy for thick, middle and thin tubes with various D/S value have been analyzed.
同时分析了下冲程抽油杆所产生的螺旋弯曲变形。
Deformation of helical buckling appeared on rod during down stroke is also analyzed.
研究了菲亚特拖拉机后桥大圆锥螺旋齿轮淬火变形规律，分析了原淬火压模存在的问题。
The quenching distortion of rear axle spiral bevel gear used in FLAT tractor is studied in this paper.
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