It is difficult to control the wall thickness of straight seam steel pipe. At present, the methods to improve the wall thickness accuracy of black jacket direct buried straight seam steel pipe manufacturers are generally as follows:

　　1. 管子将被加热

　　1. The pipe will be heated

　　热量被加热到平均水平，以防止温度波动。起飞和降落温度稳定时，升降温度不得超过30度。

　　The heat is heated to an average level to prevent temperature fluctuations. When the takeoff and landing temperatures are stable, the maximum lifting temperature shall not exceed 30 ℃.

　　2. 磨机主轴

　　2. Mill spindle

　　厚壁管和实心坯料的平均壁厚显著降低了芯轴弯曲变形的可能性，可以有效提高壁厚的精度。

　　The average wall thickness of thick walled tube and solid billet significantly reduces the possibility of mandrel bending deformation and can effectively improve the accuracy of wall thickness.

　　3.心轴精度

　　3. Spindle accuracy

　　加工精度控制在0.1mm±外芯，芯棒直线度偏差不超过5mm。在焊接过程中，在两个芯棒之间放置一个定径销，以避免焊接总线性引线的偏差。

　　The machining accuracy shall be controlled within 0.1mm ± outer core, and the straightness deviation of mandrel shall not exceed 5mm. During the welding process, a sizing pin is placed between the two mandrels to avoid the deviation of the welding bus lead.

　　4. 的工艺

　　4. Perfect technology

　　确定校直辊装置是否到位，调整相应的芯辊在中间，打开相同的开孔角度和尺寸，在轧制线上通过轧制芯的中间。

　　Determine whether the straightening roll device is in place, adjust the corresponding core roll in the middle, open the same opening angle and size, and pass through the middle of the rolling core on the rolling line.

　　5. 调整卷

　　5. Adjustment volume

　　完善的工艺是避免减薄和壁厚超过状态控制极限，提高壁厚精度。

　　The perfect technology is to avoid the center thinning and the wall thickness exceeding the state control limit, and to improve the wall thickness accuracy.

　　6. 穿孔芯棒

　　6. Perforated mandrel

　　冲头直径一般选择Φ108 mm - 114 mmΦ,25毫米或更高的厚度要求,厚壁管壁厚度是常见的。

　　Generally, the punch diameter is Φ 108 mm - 114 mm Φ, and the thickness of 25 mm or higher is required. Thick wall pipe wall thickness is common.

　　7. 滚动中间行

　　7. Scroll middle row

　　确保冲床线与带孔台车线一致，防止“上滚”或“下滚”，使加工过程中毛坯受到平均力的影响。穿刺过程。

　　Ensure that the center line of punch is consistent with the center line of the trolley with holes to prevent "up rolling" or "down rolling", so that the rough is affected by the average force during the processing. Puncture process.

　　8. 滚动物品

　　8. Rolling items

　　头、导轨、滚子等滚动物体的磨损应实时变化。

　　The wear of head, guide rail, roller and other rolling objects shall change in real time.

　　9. 压路机

　　9. Roller

　　滚动距离必须在滚动线的中间。在钻进和轧制过程中，确保导辊与轧辊之间的距离等于上辊与下辊之间的距离。

　　The rolling distance must be in the middle of the rolling line. During drilling and rolling, ensure that the distance between the guide roll and the roll is equal to the distance between the upper roll and the lower roll.

　　以上是黑夹克直埋式直缝钢管厂家为大家介绍的相关内容，想要了解更多内容，欢迎访问网站：http://www.sdhpgy.com

　　The above is the relevant content introduced by the manufacturer of black jacket direct buried straight seam steel pipe. For more information, please visit the website: http://www.sdhpgy.com