growth in thickness

By analysing the volume variation during steel tube upsetting,the relationships of the length decrease with the upsetting length and the wall thickness increase during steel tube upsetting deformation were obtained.

通过对钢管加厚过程体积变化的研究,指出钢管加厚变形过程中的长度缩短量与钢管加厚长度和壁厚增加量的关系:钢管长度缩短量与其加厚长度成正比,与其壁厚增加量成反比。

Design and Testing of Technological Process for End-upsetting of Oil Drill Pipe;

石油钻杆管端加厚工艺过程设计与试验

The design of non-dig drill pipe end-upsetting product line autocontrol system were introduced in this paper.

介绍了非开挖钻杆管端加厚生产线自动控制系统的设计。

According to the tail penetration blade with complex structure, a repairing method of using thickening blade and milling on machine is adopted.

针对这种结构较复杂的尾透叶片,使用留加厚叶片,上机床铣削的修配方法,成功解决了这种叶片转子的安装修配问题。