公开(公告)号：US4721536A

公开(公告)日：1988-01-26

申请号：US872405

申请日：1986-06-10

申请人： Heinz Grob ,  Friedrich-Otto Koch ,  Adolf Peeck ,  Werner Wennemann

发明人： Heinz Grob ,  Friedrich-Otto Koch ,  Adolf Peeck ,  Werner Wennemann

IPC分类号： C21D8/10 ,  B23K9/23 ,  C21D9/14 ,  C21D9/50 ,  C22C38/00 ,  C22C38/54

CPC分类号： C21D9/14 ,  C21D9/50

摘要： For increasing the resistance of steel pipes or tubes against acidic medium, by a combination of a heat treatment and the use of an alloyed steel, a compressure stress is built up on the side of the tubes or pipes facing the acidic medium, of up to 30% of the yield limit.

摘要翻译： 为了增加钢管或钢管对酸性介质的阻力，通过热处理和合金钢的组合，在面向酸性介质的管或管的一侧形成压缩应力，最高 30％的收益限制。

公开(公告)号：US4823847A

公开(公告)日：1989-04-25

申请号：US416478

申请日：1982-09-10

申请人： Heinz Grosse ,  Friedrich-Otto Koch ,  Adolf Peeck ,  Werner Wennemann

发明人： Heinz Grosse ,  Friedrich-Otto Koch ,  Adolf Peeck ,  Werner Wennemann

IPC分类号： F16L9/08 ,  B21C37/06 ,  B21C37/12 ,  B21D39/04 ,  F16L9/16 ,  F16L9/14

CPC分类号： F16L9/16 ,  B21C37/06 ,  B21C37/123 ,  B21D39/04 ,  Y10T29/49911 ,  Y10T29/4994

摘要： A method for production of a multi-layer gap-less steel pipe. An inner pipe and an outer pipe are formed from thermomechanically rolled steel strip with high notched bar impact strength by welding. The individual helical welding seam steel pipes of about the same lengths are matched with a difference of less than about one percent between the outer diameter of the inner pipe and the inner diameter of the outer pipe. The matched inner pipe is inserted into the outer pipe and the pipes are mechanically expanded with diameter control to a preset outer diameter of the multi-layer steel pipe. The resulting multi-layer steel pipe has the inner pipe disposed under compression and the outer pipe layer disposed under stress. The presence of a compression stress in the inner pipe provides a means opposed to hydrogen sulfide stress corrosion. The advantages of the helical welding seam steel pipes can be combined such as economic production, advantages relating to crack formation and crack propagation stopping, and the availability of high internal pressure loads upon use of thin, economic steel strip of different yield strength.

摘要翻译： 一种生产多层无缝钢管的方法。 内管和外管由通过焊接的高切口棒冲击强度的热机械轧制钢带形成。 大致相同长度的单个螺旋焊缝钢管与内管的外径和外管的内径之间的差小于约1％。 将匹配的内管插入外管，并将管道机械膨胀，直径控制到多层钢管的预设外径。 得到的多层钢管的内管配置在压缩状态，外管层处于应力状态。 在内管中存在压缩应力，提供了与硫化氢应力腐蚀相反的手段。 螺旋焊缝钢管的优点可以结合经济生产，与裂纹形成和裂纹扩展停止有关的优点，以及使用具有不同屈服强度的薄经济钢带的高内压载荷。

公开(公告)号：US4688319A

公开(公告)日：1987-08-25

申请号：US652206

申请日：1984-09-20

申请人： Heinz Gross ,  Friedrich-Otto Koch ,  Adolf Peeck ,  Werner Wennemann

发明人： Heinz Gross ,  Friedrich-Otto Koch ,  Adolf Peeck ,  Werner Wennemann

IPC分类号： F16L9/08 ,  B21C37/06 ,  B21C37/12 ,  B21D39/04 ,  F16L9/16 ,  B21D39/00 ,  B23P11/02 ,  F16L9/14

CPC分类号： F16L9/16 ,  B21C37/06 ,  B21C37/123 ,  B21D39/04 ,  Y10T29/49911 ,  Y10T29/4994

摘要： A method for production of a multi-layer gap-less steel pipe. An inner pipe and an outer pipe are formed from thermomechanically rolled steel strip with high notched bar impact strength by welding. The individual helical welding seam steel pipes of about the same lengths are matched with a difference of less than about one percent between the outer diameter of the inner pipe and the inner diameter of the outer pipe. The matched inner pipe is inserted into the outer pipe and the pipes are mechanically expanded with diameter control to a preset outer diameter of the multi-layer steel pipe. The resulting multi-layer steel pipe has the inner pipe disposed under compression and the outer pipe layer disposed under stress. The presence of a compression stress in the inner pipe provides a means opposed to hydrogen sulfide stress corrosion. The advantages of the helical welding seam steel pipes can be combined such as economic production, advantages relating to crack formation and crack propagation stopping, and the availability of high internal pressure loads upon use of thin, economic steel strip of different yield strength.

摘要翻译： 一种生产多层无缝钢管的方法。 内管和外管由通过焊接的高切口棒冲击强度的热机械轧制钢带形成。 大致相同长度的单个螺旋焊缝钢管与内管的外径和外管的内径之间的差小于约1％。 将匹配的内管插入外管，并将管道机械膨胀，直径控制到多层钢管的预设外径。 得到的多层钢管的内管配置在压缩状态，外管层处于应力状态。 在内管中存在压缩应力，提供了与硫化氢应力腐蚀相反的手段。 螺旋焊缝钢管的优点可以结合经济生产，与裂纹形成和裂纹扩展停止有关的优点，以及使用具有不同屈服强度的薄经济钢带的高内压载荷的可用性。

公开(公告)号：US4969671A

公开(公告)日：1990-11-13

申请号：US538688

申请日：1990-06-15

申请人： Heinz Gross ,  Friedrich-Otto Koch ,  Matthias Lang ,  Adolf Peeck ,  Hans Spliethoff ,  Wolfgang Venema ,  Jurgen Duisberg ,  Robert Scholl

发明人： Heinz Gross ,  Friedrich-Otto Koch ,  Matthias Lang ,  Adolf Peeck ,  Hans Spliethoff ,  Wolfgang Venema ,  Jurgen Duisberg ,  Robert Scholl

IPC分类号： E21B17/042 ,  E21B17/08 ,  F16L15/04 ,  F16L15/06

CPC分类号： F16L15/003 ,  E21B17/042 ,  E21B17/08 ,  F16L15/04 ,  Y10S285/91

摘要： A gas-tight joint for pipe linings and risers inside a bore, consisting of a neck with an outside thread and of a matching collar with an inside thread, with a groove in the vicinity of the thread on the collar and/or of the thread on the neck to accommodate a deformable gasket that, when the joint is screwed tight, is demarcated and deformed by the base of the groove in the neck and/or in the collar and by the contour of the thread on the other component. The cross-sectional area demarcated by the base of the groove in the neck and/or collar and by the contour of the thread on the other component once the two components have been screwed together remains constant along the groove and is equal to or larger than the cross-sectional area of the deformable gasket before the components are screwed together.

摘要翻译： 用于管内衬和立管内部的气密接头，由具有外螺纹的颈部和具有内螺纹的匹配套环组成，在颈圈和/或螺纹上的螺纹附近具有凹槽 在颈部以容纳可变形垫圈，当接头拧紧时，由颈部和/或套环中的凹槽的基部和另一部件上的线的轮廓划分并变形。 一旦两个部件已经拧紧在一起，在颈部和/或轴环中的槽的基部和另一个部件上的螺纹的轮廓划分的横截面面积沿着凹槽保持恒定，并且等于或大于 在将部件拧紧在一起之前，可变形垫片的横截面积。