推力锥产品存在深腔、薄壁结构，锻造工艺过程中壁厚差难以控制。
Thrust cone has deep cavity and thin wall. Wall margin is hard to control during the forging process.
通过分析影响产品毛坯质量的诸多因素，确认毛坯壁厚差超差是主要的影响因素。
It is confirmed that the excess of semi-finished product wall thickness difference is the main influence factor through the analysis of the factors that affect the semi-finished product quality.
杯形件的口部壁厚差是生产中时常遇到的技术问题，也是热压杯形件中最难控制的一种尺寸。
The wall_thickness difference of the cup_shaped part is a technical problem often occurring in production, and it is a size most difficult to control when producing hot_extruded cup_shaped parts.
最后，利用所得的解研究了材料的中间主应力效应和拉压强度差效应对厚壁圆筒安定极限压力的影响。
Finally, the influences of the intermediate principal stress and the strength-difference on the shakedown limit pressure of the thick-walled cylinder are investigated by the present solution.
随着压差的增加接触压力相应增加，等壁厚螺杆泵比普通螺杆泵接触压力大；
As the increase of the pressure difference, the contact pressure increases, the contact pressure of iso-wall thickness progressive cavity pump is larger than that of common one.
随着压差的增加接触压力相应增加，等壁厚螺杆泵比普通螺杆泵接触压力大；
As the increase of the pressure difference, the contact pressure increases, the contact pressure of iso-wall thickness progressive cavity pump is larger than that of common one.
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