Pipe produced from a solid billet that is heated and rotated under pressure.
由实心坯制成的管子，该实心坯在压力下加热和旋转。
Types of and causes for the surface defects of the CC round billet for pipe - rolling with mandrel mill are analyzed, and quality improvement measures proposed.
简要分析了连铸连轧圆管坯表面缺陷的类别和形成原因，提出了改进圆管坯质量的措施。
This rotating pressure creates a hole in the middle of the billet, which is then formed into a pipe by a mandrel.
这种旋转压力在实心坯中间出现了一个孔，再通过心轴成型成管。
When high frequency pulse current is applied to CC billet, the centerline pipe and centerline crack in the billet are eliminated, and the central segregation and central crack are reduced.
进行了连铸工业试验，效果明显：铸坯中心缩孔和中心裂纹被消除，中心偏析和中间裂纹也得到降低。
When applied high frequency pulse current on CC. billet, the centerline pipe and centerline crack in billet are eliminated, and the central segregation and middle crack are improved.
用高频电场处理连铸小方坯，可以消除铸坯中心缩孔和中心裂纹。改善中心偏析和中间裂纹。
The updated mathematic models for calculation of the central pipe formotion in continuous cast billet are built up, based on the material balance and the previous published models.
通过物质平衡原理讨论并新建立了计算方坯中心缩孔的数学模型。
The updated mathematic models for calculation of the central pipe formotion in continuous cast billet are built up, based on the material balance and the previous published models.
通过物质平衡原理讨论并新建立了计算方坯中心缩孔的数学模型。
应用推荐