The defect of extrudate in the extrusion process in the form of melt fracture could only be evidenced in the semisolid state of PP melt.
在挤出过程中，以熔体破裂形式出现的挤出物的缺陷只有在PP熔体处于半固体状态时才能观察到。
Uneven deformation and extrusion drape in the different pass when rolling cause long strip defect on the surface. Defects on the surface and near surface are the main cause for cold heading to craze.
轧制过程中各道次的不均匀变形和挤压褶皱造成了圆钢表面的长条形缺陷，而表面和近表面缺陷是造成冷顶锻开裂的主要原因。
The inner spiral copper tube produced by extrusion-rolling process has a kind of special line defect, which influences the production yield remarkably.
采用挤轧法生产内螺纹铜管时易出现一种特有的线形缺陷，显著影响内螺纹铜管的成材率。
应用推荐