JP7285320B2 - 角部を増肉した、熱冷複合成形された正方形/長方形鋼管及びその製造方法 - Google Patents
角部を増肉した、熱冷複合成形された正方形/長方形鋼管及びその製造方法 Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims description 71
- 239000010959 steel Substances 0.000 title claims description 71
- 238000004519 manufacturing process Methods 0.000 title claims description 23
- 238000010438 heat treatment Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 22
- 238000005096 rolling process Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 15
- 230000006698 induction Effects 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 230000000694 effects Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 description 9
- 239000002131 composite material Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000013000 roll bending Methods 0.000 description 4
- 238000005482 strain hardening Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/155—Making tubes with non circular section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16S—CONSTRUCTIONAL ELEMENTS IN GENERAL; STRUCTURES BUILT-UP FROM SUCH ELEMENTS, IN GENERAL
- F16S3/00—Elongated members, e.g. profiled members; Assemblies thereof; Gratings or grilles
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- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/24—Automatic variation of thickness according to a predetermined programme
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D15/00—Corrugating tubes
- B21D15/02—Corrugating tubes longitudinally
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- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/10—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes
- B21D5/12—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes making use of forming-rollers
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- C—CHEMISTRY; METALLURGY
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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- 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
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
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- 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
- C21D1/34—Methods of heating
- C21D1/52—Methods of heating with flames
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
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- 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
- C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
-
- 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
- C21D9/085—Cooling or quenching
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/003—Rigid pipes with a rectangular cross-section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/02—Rigid pipes of metal
-
- 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
- B21B45/02—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 for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B2045/0212—Cooling devices, e.g. using gaseous coolants using gaseous coolants
-
- 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
- B21B45/02—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 for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B2045/0227—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
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- 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
- C21D2221/00—Treating localised areas of an article
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- 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
- C21D2261/00—Machining or cutting being involved
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Description
t≦6mmである場合、0<R<2.0tであり、0<R<1.5tが好ましく、0<R<0.5tがより好ましく、
6<t≦10mmである場合、0<R<2.5tであり、0<R<2.0tが好ましく、0<R<0.75tがより好ましく、
t>10mmである場合、0<R<3.0tであり、0<R<2.5tが好ましく、0<R<1.0tがより好ましい条件を満たす。
単溶接の正方形/長方形鋼管の断面の周長は80mm~4800mmであり、
単溶接の正方形/長方形鋼管の直管の肉厚は6mm~70mmであり、
二重溶接の正方形/長方形鋼管の断面の周長は1600mm~9600mmであり、
二重溶接の正方形/長方形鋼管の直管の肉厚は20mm~80mmである。
2)誘導コイルで正方形/長方形鋼管の四隅を局所的に加熱するステップと、
3)角部が加熱された正方形/長方形鋼管は仕上げ成形ユニットに順次入り、各成形ユニットが正方形/長方形鋼管の4つの角部を圧延成形し、同時に、隣接するユニット2つごとの圧延中の圧延ロールの回転速度の差分値を制御することにより、正方形/長方形鋼管が隣接する2つのユニット間で熱張力作用を生成するようにさせ、熱間仕上げ中に余分な変形が発生することを解消するステップと、
4)水冷システムの正方形/長方形鋼管に対する冷却制御により、完成品の正方形/長方形鋼管の強度性能を保証し、その後に空冷するステップと、
5)完成品の正方形/長方形鋼管を切断するステップと、を含む。
ステップ2)において、加熱温度の範囲は750℃~1100℃であり、加熱時間は15秒以上であり、
ステップ3)において、火炎ランス保温システムで正方形/長方形鋼管の4つの隅を加熱することにより、熱間仕上げ段階で正方形/長方形鋼管の温度が一定になるように確保し、その温度の低下を防止し、
温度制御範囲は700~950℃であり、
ステップ3)において、隣接する仕上げ成形ユニット2つごとに、ロールの直径の差は1~5mmであり、
ステップ3)において、仕上げ成形ユニットの数は5つで、5つの仕上げ成形ユニットのうち、第1、第3、第5のユニットは固定されたもので、第2、第4のユニットは回転できるもので、タービンウォーム装置を介して回転が実現され、
ステップ3)において、正方形/長方形鋼管は各仕上げ成形ユニットを通った後、その断面積の変化の程度は0~5%の範囲である。
(1)Q235鋼板を、外側フィレット半径R=20.0mmである予備成形の正方形/長方形管に予め曲げ、サイズは200*200mmであり、ただし、平板領域の肉厚は8.0mmで、角部の肉厚は7.8mmである。
(1)Q235鋼板を、外側フィレット半径R=36.0mmである予備成形の正方形/長方形管に予め曲げ、サイズは400*400mmであり、ただし、平板領域の肉厚は20.0mmで、角部の肉厚は19.6mmである。
Claims (7)
- 角部を増肉した正方形/長方形鋼管の製造方法であって、
前記正方形/長方形鋼管の外角半径は、
6<t≦10mmである場合、0<R<0.75tであり、
t>10mmである場合、0<R<1.0tである条件を満たし
ただし、tは正方形/長方形鋼管の直管部分の肉厚であり、Rは正方形/長方形鋼管の四隅の外角半径であり、
前記正方形/長方形鋼管の角部の肉厚は1.0t~1.8tの間であり、
正方形/長方形鋼管の製造方法は、
1)予備完成品の正方形/長方形鋼管を、圧延した後、後続の生産システムにスムーズかつ対称的に導入するステップと、
2)誘導コイルで正方形/長方形鋼管の四隅を局所的に加熱するステップと、
3)角部が加熱された正方形/長方形鋼管は順番に配置される複数の仕上げ成形ユニットに順次入り、各仕上げ成形ユニットが正方形/長方形鋼管の4つの角部を圧延成形し、かつ、隣接する仕上げ成形ユニット2つごとの圧延中の圧延ロールの回転速度の差分値を制御することにより、正方形/長方形鋼管が隣接する2つの仕上げ成形ユニット間で熱張力作用を生成するようにさせ、熱間仕上げ中に余分な変形が発生することを解消するステップと、
4)水冷システムの正方形/長方形鋼管に対する冷却制御により、完成品の正方形/長方形鋼管の強度性能を保証し、その後に空冷するステップと、
5)完成品の正方形/長方形鋼管を切断するステップと、を含む、
ことを特徴とする角部を増肉した正方形/長方形鋼管の製造方法。 - 前記正方形/長方形鋼管の角部の肉厚は1.0t~1.2tである、
ことを特徴とする請求項1に記載の正方形/長方形鋼管の製造方法。 - シングルシームの正方形/長方形鋼管の断面の周長は80mm~4800mmであり、
シングルシームの正方形/長方形鋼管の直管の肉厚は6mm~70mmであり、
ダブルシームの正方形/長方形鋼管の断面の周長は1600mm~9600mmであり、
ダブルシームの正方形/長方形鋼管の直管の肉厚は20mm~80mmである、
ことを特徴とする請求項1に記載の正方形/長方形鋼管の製造方法。 - ステップ2)において、加熱温度の範囲は750℃~1100℃であり、加熱時間は15秒以上である、
ことを特徴とする請求項1から請求項3のいずれか1項に記載の正方形/長方形鋼管の製造方法。 - ステップ3)において、火炎ランス保温システムで正方形/長方形鋼管の4つの隅を加熱することにより、熱間仕上げ段階で正方形/長方形鋼管の温度が一定になるように確保し、その温度の低下を防止し、
温度制御範囲は700~950℃であり、
隣接する仕上げ成形ユニット2つごとに、ロールの直径の差は1~5mmである、
ことを特徴とする請求項1から請求項3のいずれか1項に記載の正方形/長方形鋼管の製造方法。 - ステップ3)において、仕上げ成形ユニットの数は5つであり、第1、第3、第5の仕上げ成形ユニットは固定されたものであり、第2、第4の仕上げ成形ユニットは回転可能なものである、
ことを特徴とする請求項1から請求項3のいずれか1項に記載の正方形/長方形鋼管の製造方法。 - 正方形/長方形鋼管は各仕上げ成形ユニットを通った後、その断面積の変化の程度は0~5%の範囲である、
ことを特徴とする請求項1から請求項3のいずれか1項に記載の正方形/長方形鋼管の製造方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201810785443.4A CN110726064A (zh) | 2018-07-17 | 2018-07-17 | 一种角部增厚冷热复合成型的方矩形钢管及制备方法 |
CN201810785443.4 | 2018-07-17 | ||
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CN111112472A (zh) * | 2020-02-10 | 2020-05-08 | 大连理工大学 | 带沟槽结晶器铜管的成形模具及制备方法 |
CN113118231B (zh) * | 2021-04-21 | 2023-05-09 | 中冶赛迪技术研究中心有限公司 | 一种闭口型钢热辊弯生产通用工艺 |
CN114151711A (zh) * | 2021-11-26 | 2022-03-08 | 江苏万和铝业有限公司 | 一种高强度防断裂的抗腐蚀复合型铝管及其生产工艺 |
CN114134425B (zh) * | 2021-12-08 | 2022-09-02 | 马鞍山钢铁股份有限公司 | 一种450MPa级铁路客车底架边梁用冷弯直角型钢及其制造方法 |
CN115558757A (zh) * | 2022-10-14 | 2023-01-03 | 浙江吉利控股集团有限公司 | 硼钢管的生产工艺、硼钢管、电池框架和车辆 |
CN116159909B (zh) * | 2023-04-24 | 2023-07-25 | 太原科技大学 | 一种矩形钢管角部增厚的孔型成型方法及成型辊 |
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