无缝钢管穿孔

The seamless pipe process is much different from any other manufacturing process because it has no welds or seams.

The pipe starts as a solid steel billet, and is then heated and placed over a piercing point which creates a steel shell. The process is finished further once the initial shell is created, and is then molded into the desired diameter and wall thickness. The pipe created from this process is made in a heated application, so the pipe should be fully normalized and have a consistent cellular pattern throughout the entire circumference of the material.

刺穿是热轧无缝钢管变形的第一步，其作用是饰有毛细管的纯空管坯料。

由于磨损毛细管表面缺陷或偏心（厚度不均匀）难以消除或降低变形过程，因此，穿孔毛细管的质量对热轧无缝钢管的质量产生非常重要的影响。方式压力管穿孔冲孔，推动旋转刺穿和刺穿。厚壁无缝钢主要用于石油地质钻孔管，石化用于裂缝管，锅炉管，管道和汽车轴承，拖拉机，航空等精密管结构，其制造工艺：

热轧无缝钢管圆形→加热→三个穿孔辊轧，轧制或挤出→拆卸→尺寸（或减少）冷却→矫直→静水压试验（或测试）徽标→存储。

热轧无缝钢铸锭destroy tissue, grain refinement of steel and eliminate defects microstructure, so that the steel dense tissue mechanical properties are improved. This improvement is mainly reflected in the direction along the rolling direction to a certain extent in the steel is no longer isotropic; pouring formed bubbles, cracks and loose, can be welded at a high temperature and pressure.

经过热轧无缝钢管圆形烘烤，穿过压力打孔器刺穿。一般更常见的冲床是锥形滚筒冲孔机，冲孔机如此高的生产效率，产品质量，穿孔扩张能力，可以磨损各种钢。穿孔后，圆形管是三辊轧制，轧制或挤出。尺寸后挤出管道。通过穿孔钢胚成钢制成高速旋转锥钻孔。管内直径由外径尺寸钻钻钻头长度决定。

After sizing the pipe into the cooling tower through spray cooling pipe after cooling, it is necessary to be straightened. After straightening the steel conveyor belt to the metal detection machine (or pressure test) for internal testing. If the internal pipe cracks, bubbles and other issues, will be detected. After the selection of steel but also through strict quality control manual. After the steel quality, spray paint on number, size, batch number and so on. By a crane into the warehouse.