JP4688037B2 - 継目無鋼管の製造方法及び酸化性ガス供給装置 - Google Patents
継目無鋼管の製造方法及び酸化性ガス供給装置 Download PDFInfo
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- JP4688037B2 JP4688037B2 JP2006096888A JP2006096888A JP4688037B2 JP 4688037 B2 JP4688037 B2 JP 4688037B2 JP 2006096888 A JP2006096888 A JP 2006096888A JP 2006096888 A JP2006096888 A JP 2006096888A JP 4688037 B2 JP4688037 B2 JP 4688037B2
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- 230000001590 oxidative effect Effects 0.000 title claims description 80
- 229910000831 Steel Inorganic materials 0.000 title claims description 28
- 239000010959 steel Substances 0.000 title claims description 28
- 238000004519 manufacturing process Methods 0.000 title claims description 27
- 239000007789 gas Substances 0.000 claims description 83
- 238000003303 reheating Methods 0.000 claims description 57
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 46
- 229910052799 carbon Inorganic materials 0.000 claims description 42
- 239000000314 lubricant Substances 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 description 29
- 238000000034 method Methods 0.000 description 17
- 238000005096 rolling process Methods 0.000 description 8
- 238000005261 decarburization Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910000963 austenitic stainless steel Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/004—Heating the product
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
-
- 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
-
- 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
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
- B21B25/04—Cooling or lubricating mandrels during operation
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D3/00—Diffusion processes for extraction of non-metals; Furnaces therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Heat Treatment Of Articles (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Description
ここで、上記式(1)において、Qは酸化性ガスの流量[Nl/sec]を、T ∞ は再加熱炉の炉内雰囲気温度[℃]を、T p は再加熱炉に装入する際の素管の温度[℃]を、C in は酸化性ガスの酸素濃度[体積%]を、T in は酸化性ガスの温度[℃]を、ρ c はマンドレルバーに塗布した潤滑剤が含有するカーボンの粒子密度[kg/m 3 ]を、D c はマンドレルバーに塗布した潤滑剤が含有するカーボンの粒子径[μm]を、A b はマンドレルバーに塗布した潤滑剤が含有するカーボンの付着密度[g/m 3 ]を、πは円周率を、D p は素管の内径[m]を、L p は素管の長さ[m]を意味する。
(1)素管の材質:SUS304
(2)素管の寸法:外径151mm、厚み:4.0mm、長さ1000mm
(マンドレルミルで延伸圧延した素管を切断したものを使用した)
(3)試験炉の炉内雰囲気温度:1050℃
(4)試験炉に装入する際の素管の温度(予加熱温度):550〜800℃
(5)素管延伸圧延時のマンドレルバーに塗布したカーボンの付着密度:15g/m2
上記(1)〜(5)の条件下で、素管を試験炉に装入し、素管の内部に酸化性ガス(空気)を2分間供給した。その後、素管を試験炉から搬出し、素管内面のカーボン量を測定して、浸炭の有無を評価した。以上の試験を、試験炉に装入する際の素管の温度と、供給する酸化性ガスの流量とを適宜変更して繰り返した。
試験炉に装入する際の素管の温度を650℃の一定温度とし、寸法が異なる複数の素管に対して繰り返し試験を実施した点を除き、試験1と同様の試験を実施した。
試験炉に装入する際の素管の温度を650℃の一定温度とし、素管延伸圧延時のマンドレルバーに塗布したカーボンの付着密度が異なる複数の素管に対して繰り返し試験を実施した点を除き、試験1と同様の試験を実施した。
ここで、上記式(1)において、Qは酸化性ガスの流量[Nl/sec]を、T∞は再加熱炉の炉内雰囲気温度[℃]を、Tpは再加熱炉に装入する際の素管の温度[℃]を、Cinは酸化性ガスの酸素濃度[体積%]を、Tinは酸化性ガスの温度[℃]を、ρcはマンドレルバーに塗布した潤滑剤が含有するカーボンの粒子密度[kg/m3]を、Dcはマンドレルバーに塗布した潤滑剤が含有するカーボンの粒子径[μm]を、Abはマンドレルバーに塗布した潤滑剤が含有するカーボンの付着密度[g/m3]を、πは円周率を、Dpは素管の内径[m]を、Lpは素管の長さ[m]を意味する。
2・・・加熱炉
3・・・ピアサー
4、P・・・中空素管
5・・・マンドレルミル
6・・・マンドレルバー
7、10・・・再加熱炉
8・・・絞り圧延装置
11・・・装入口
12・・・移動ビーム
13・・・固定ビーム
14・・・ポケット
15・・・側壁
20・・・酸化性ガス供給装置
21・・・ノズル
Claims (2)
- カーボンを含有する潤滑剤を塗布したマンドレルバーを用いてマンドレルミルで延伸圧延された素管を再加熱炉で再加熱して継目無鋼管を製造する方法であって、
再加熱炉に搬入された素管が550℃以上1000℃以下の状態において、該素管の内部に、下記の式(1)の条件を満足する流量の酸化性ガスを供給することを特徴とする継目無鋼管の製造方法。
ここで、上記式(1)において、Qは酸化性ガスの流量[Nl/sec]を、T ∞ は再加熱炉の炉内雰囲気温度[℃]を、T p は再加熱炉に装入する際の素管の温度[℃]を、C in は酸化性ガスの酸素濃度[体積%]を、T in は酸化性ガスの温度[℃]を、ρ c はマンドレルバーに塗布した潤滑剤が含有するカーボンの粒子密度[kg/m 3 ]を、D c はマンドレルバーに塗布した潤滑剤が含有するカーボンの粒子径[μm]を、A b はマンドレルバーに塗布した潤滑剤が含有するカーボンの付着密度[g/m 3 ]を、πは円周率を、D p は素管の内径[m]を、L p は素管の長さ[m]を意味する。 - 前記再加熱炉は、移動ビーム及び固定ビームのそれぞれに設けられた各ポケット上に交互に素管を載せ替えながら搬送するウォーキングビーム式の再加熱炉とされており、
前記固定ビームの最も素管搬入側から素管搬出側に向けて設けられた複数の連続したポケットの側方にそれぞれ配置され、前記固定ビームの前記各ポケットに載置された素管の内部に向けて酸化性ガスを噴出する複数のノズルを備えることを特徴とする請求項1に記載の継目無鋼管の製造方法に用いられる酸化性ガス供給装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006096888A JP4688037B2 (ja) | 2006-03-31 | 2006-03-31 | 継目無鋼管の製造方法及び酸化性ガス供給装置 |
US12/225,726 US8464568B2 (en) | 2006-03-31 | 2007-03-20 | Production method of seamless pipe or tube, and oxidizing gas supply unit |
EP07739058.1A EP2002903B1 (en) | 2006-03-31 | 2007-03-20 | Method for production of seamless pipe, in particular by use of an oxidizing gas supply apparatus |
PCT/JP2007/055615 WO2007114041A1 (ja) | 2006-03-31 | 2007-03-20 | 継目無管の製造方法及び酸化性ガス供給装置 |
CN200780018203.1A CN101448585B (zh) | 2006-03-31 | 2007-03-20 | 无缝管的制造方法和氧化性气体供给装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006096888A JP4688037B2 (ja) | 2006-03-31 | 2006-03-31 | 継目無鋼管の製造方法及び酸化性ガス供給装置 |
Publications (2)
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JP2007268562A JP2007268562A (ja) | 2007-10-18 |
JP4688037B2 true JP4688037B2 (ja) | 2011-05-25 |
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JP2006096888A Active JP4688037B2 (ja) | 2006-03-31 | 2006-03-31 | 継目無鋼管の製造方法及び酸化性ガス供給装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8464568B2 (ja) |
EP (1) | EP2002903B1 (ja) |
JP (1) | JP4688037B2 (ja) |
CN (1) | CN101448585B (ja) |
WO (1) | WO2007114041A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2014747B1 (en) * | 2006-04-24 | 2018-08-08 | Nippon Steel & Sumitomo Metal Corporation | Lubricant composition |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0857505A (ja) * | 1994-08-19 | 1996-03-05 | Sumitomo Metal Ind Ltd | オーステナイト系ステンレス鋼管の製造方法 |
JPH1190511A (ja) * | 1997-09-26 | 1999-04-06 | Sumitomo Metal Ind Ltd | 表面性状に優れた継目無鋼管の製造方法および継目無鋼管の製造設備 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0734926B2 (ja) | 1990-08-31 | 1995-04-19 | 川崎製鉄株式会社 | オーステナイト系ステンレス継目無鋼管の製造方法 |
JP2924523B2 (ja) * | 1992-12-11 | 1999-07-26 | 住友金属工業株式会社 | マンドレルミルによる金属管の延伸圧延方法 |
JPH06182427A (ja) | 1992-12-21 | 1994-07-05 | Kawasaki Steel Corp | 継目無鋼管の浸炭防止方法 |
EP0698426A1 (de) * | 1994-08-18 | 1996-02-28 | MANNESMANN Aktiengesellschaft | Walzdornwechselvorrichtung für Stopfenwalzwerke |
JP3369320B2 (ja) | 1994-09-19 | 2003-01-20 | 三菱マテリアル株式会社 | 傾斜圧延装置 |
JPH0890043A (ja) | 1994-09-26 | 1996-04-09 | Sumitomo Metal Ind Ltd | ステンレス継目無鋼管の製造方法 |
JP2867910B2 (ja) | 1995-02-23 | 1999-03-10 | 住友金属工業株式会社 | 継目無鋼管の浸炭防止方法 |
US5699690A (en) * | 1995-06-19 | 1997-12-23 | Sumitomo Metal Industries, Ltd. | Method and apparatus for manufacturing hollow steel bars |
JP3855300B2 (ja) * | 1996-04-19 | 2006-12-06 | 住友金属工業株式会社 | 継目無鋼管の製造方法および製造設備 |
JP2000024706A (ja) | 1998-07-14 | 2000-01-25 | Sumitomo Metal Ind Ltd | 継目無鋼管の製造方法および耐食性に優れた継目無合金鋼鋼管 |
JP2001105007A (ja) | 1999-10-08 | 2001-04-17 | Sumitomo Metal Ind Ltd | マンドレルミル圧延方法 |
WO2005068098A1 (ja) * | 2004-01-16 | 2005-07-28 | Sumitomo Metal Industries, Ltd. | 継目無管の製造方法 |
WO2007126005A1 (ja) * | 2006-04-28 | 2007-11-08 | Sumitomo Metal Industries, Ltd. | ステンレス鋼管の製造方法 |
-
2006
- 2006-03-31 JP JP2006096888A patent/JP4688037B2/ja active Active
-
2007
- 2007-03-20 EP EP07739058.1A patent/EP2002903B1/en not_active Expired - Fee Related
- 2007-03-20 WO PCT/JP2007/055615 patent/WO2007114041A1/ja active Application Filing
- 2007-03-20 US US12/225,726 patent/US8464568B2/en active Active
- 2007-03-20 CN CN200780018203.1A patent/CN101448585B/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0857505A (ja) * | 1994-08-19 | 1996-03-05 | Sumitomo Metal Ind Ltd | オーステナイト系ステンレス鋼管の製造方法 |
JPH1190511A (ja) * | 1997-09-26 | 1999-04-06 | Sumitomo Metal Ind Ltd | 表面性状に優れた継目無鋼管の製造方法および継目無鋼管の製造設備 |
Also Published As
Publication number | Publication date |
---|---|
US8464568B2 (en) | 2013-06-18 |
EP2002903A2 (en) | 2008-12-17 |
EP2002903A4 (en) | 2012-07-04 |
EP2002903A9 (en) | 2009-04-22 |
US20110239720A1 (en) | 2011-10-06 |
CN101448585A (zh) | 2009-06-03 |
JP2007268562A (ja) | 2007-10-18 |
EP2002903B1 (en) | 2013-06-19 |
WO2007114041A1 (ja) | 2007-10-11 |
CN101448585B (zh) | 2011-07-27 |
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