WO2008126633A1 - 継目無管の製造方法 - Google Patents
継目無管の製造方法 Download PDFInfo
- Publication number
- WO2008126633A1 WO2008126633A1 PCT/JP2008/054716 JP2008054716W WO2008126633A1 WO 2008126633 A1 WO2008126633 A1 WO 2008126633A1 JP 2008054716 W JP2008054716 W JP 2008054716W WO 2008126633 A1 WO2008126633 A1 WO 2008126633A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pipe
- rolling
- seamless pipe
- groove
- manufacturing
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
- B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
- B21B17/04—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/024—Rolls for bars, rods, rounds, tubes, wire or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
マンドレルミルによる延伸圧延工程で管端部に割れが発生することを効果的に防止可能な継目無管の製造方法を提供する。 本発明に係る継目無管の製造方法は、配設された孔型ロールによって決定される孔型楕円度が下記の式(1)の条件を満足する第1圧延スタンドで管を延伸圧延する工程と、配設された孔型ロールによって決定されるオフセット量Sと溝底曲率半径R1との比S/R1が下記の式(2)の条件を満足する第2圧延スタンドで管を延伸圧延する工程と、を含むことを特徴とする。 1.2≦孔型楕円度≦1.4 ・・・(1) S/R1≦-0.35・Ln(X)+1.43 ・・・(2) ここで、上記式(2)のXは、第2圧延スタンドにおける溝底圧下率(%)を意味する。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007090626A JP2008246535A (ja) | 2007-03-30 | 2007-03-30 | 継目無管の製造方法 |
JP2007-090626 | 2007-03-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008126633A1 true WO2008126633A1 (ja) | 2008-10-23 |
Family
ID=39863759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/054716 WO2008126633A1 (ja) | 2007-03-30 | 2008-03-14 | 継目無管の製造方法 |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2008246535A (ja) |
WO (1) | WO2008126633A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITMI20111754A1 (it) * | 2011-09-29 | 2013-03-30 | Danieli Off Mecc | Gabbia di laminazione per laminatoio calibratore o riduttore a piu' punti di pressione |
CN104785525B (zh) * | 2015-04-07 | 2017-03-01 | 浙江嘉翔精密机械技术有限公司 | 一种提高核电蒸汽发生器换热管性能的方法 |
CN110280594B (zh) * | 2019-07-19 | 2020-06-26 | 北京科技大学 | 一种圆管柔性辊弯成型设计方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08276208A (ja) * | 1995-04-04 | 1996-10-22 | Sumitomo Metal Ind Ltd | マンドレルミル |
JP2001113306A (ja) * | 1999-10-18 | 2001-04-24 | Sumitomo Metal Ind Ltd | 高合金継目無鋼管の製造方法およびそれに用いる圧延用孔型 |
-
2007
- 2007-03-30 JP JP2007090626A patent/JP2008246535A/ja active Pending
-
2008
- 2008-03-14 WO PCT/JP2008/054716 patent/WO2008126633A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08276208A (ja) * | 1995-04-04 | 1996-10-22 | Sumitomo Metal Ind Ltd | マンドレルミル |
JP2001113306A (ja) * | 1999-10-18 | 2001-04-24 | Sumitomo Metal Ind Ltd | 高合金継目無鋼管の製造方法およびそれに用いる圧延用孔型 |
Also Published As
Publication number | Publication date |
---|---|
JP2008246535A (ja) | 2008-10-16 |
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