CN108655664A - 一种复合钢管的制造方法 - Google Patents

一种复合钢管的制造方法 Download PDF

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CN108655664A
CN108655664A CN201710188759.0A CN201710188759A CN108655664A CN 108655664 A CN108655664 A CN 108655664A CN 201710188759 A CN201710188759 A CN 201710188759A CN 108655664 A CN108655664 A CN 108655664A
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steel tube
manufacturing
composite steel
steel plate
composite
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CN108655664B (zh
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焦四海
闫博
周成
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Baoshan Iron and Steel Co Ltd
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Baoshan Iron and Steel Co Ltd
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Priority to KR1020197027873A priority patent/KR102365943B1/ko
Priority to PCT/CN2018/074674 priority patent/WO2018177020A1/zh
Priority to US16/493,718 priority patent/US11707773B2/en
Priority to EP18777638.0A priority patent/EP3603880A4/en
Priority to AU2018246660A priority patent/AU2018246660B2/en
Priority to JP2019548000A priority patent/JP6837155B2/ja
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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
    • B21C37/08—Making tubes with welded or soldered seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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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
    • B21C37/065—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 starting from a specific blank, e.g. tailored blank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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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
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    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/0826—Preparing the edges of the metal sheet with the aim of having some effect on the weld
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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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/09—Making tubes with welded or soldered seams of coated strip material ; Making multi-wall tubes
    • 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
    • B21C37/30—Finishing tubes, e.g. sizing, burnishing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K13/00—Welding by high-frequency current heating
    • B23K13/01—Welding by high-frequency current heating by induction heating
    • B23K13/02—Seam welding
    • B23K13/025—Seam welding for tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/16—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating with interposition of special material to facilitate connection of the parts, e.g. material for absorbing or producing gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B23K31/027—Making tubes with soldering or welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
    • B23K9/0282—Seam welding; Backing means; Inserts for curved planar seams for welding tube sections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • 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
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
    • B21B2001/383—Cladded or coated products

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Abstract

本发明公开了一种复合钢管的制造方法，其采用复合钢板为原料制造复合钢管，所述复合钢板包括基层和与基层轧制复合的复层；所述复合钢管的制造方法包括步骤：成型、焊接和去毛刺；先将复合钢板的两边向复合钢板的基层一侧折弯，然后再进行所述成型步骤，在所述成型步骤后，管坯的开口面全部为所述复层。本发明所述的复合钢管的制造方法，其采用复合钢板为原料制造复合钢管，该制造方法既充分利用高频直缝焊管机组连续高效的特点，不增加后续的非连续工序，又保证复合钢管焊缝处的耐腐蚀性能。

Description

一种复合钢管的制造方法
技术领域
本发明涉及一种钢材的制造方法，尤其涉及一种钢管的制造方法。
背景技术
复合钢管兼备基层钢材的力学性能和复层金属的耐腐蚀性能，用于腐蚀性流体输送或者腐蚀环境下的机械结构，具有较高的性价比，因而得到越来越广泛的应用。
根据复层金属与基层金属的结合状态，复合钢管可以分为机械结合复合钢管和冶金结合复合钢管，前者结合面存在局部间隙，结合强度较低，在使用过程中可能会出现界面分离等现象，而后者具有优良的综合性能。
一方面，传统钢管生产技术都被尝试用于复合钢管的生产。传统钢管生产技术包括无缝钢管和焊管生产技术，前者包括热轧无缝钢管和热挤压无缝钢管、后者包括直缝焊管、螺旋焊管和高频直缝焊管生产技术。与无缝钢管相比，焊管生产技术尤其是高频直缝焊管生产技术采用钢板为原料，其壁厚均匀，几何尺寸规整，生产成本低。
另一方面，轧制复合钢板具有良好的冶金结合效果，复层与基层钢板结合强度高，尺寸精度高，表面质量好。因此，以轧制复合钢板为原料、采用高频直缝焊管技术生产复合钢管为人们所期待。
以复合钢板为原料、采用高频直缝焊管机组生产复合钢管时，由于复层金属较薄，焊缝处的复层金属会被挤出而成为毛刺的一部分，经过刮毛刺后，焊缝处的复层金属会被刮薄或者被刮除，焊缝处的耐腐蚀性能因此而降低。
公开号为CN103978299A，公开日为2014年8月13日，名称为“利用高频电阻焊法生产双金属冶金复合管工艺及复合管”的中国专利文献公开了一种利用高频电阻焊法生产双金属冶金复合管工艺及复合管。该专利文献所公开的技术方案利用高频电阻焊法生产双金属合金复合管，采用复合板为原料，采用高频电阻焊法生产耐蚀合金衬层在内、基管在外的冶金复合钢管，将焊缝处附近的衬层刮除，然后进行补焊，实现内衬耐蚀合金层的连续性，然而该技术方案在高频电阻焊之后同样需要增加离线的补焊工序。
期望获得一种复合钢管的制造方法，其能够充分利用高频直缝焊管机组连续高效的特点，不增加后续的非连续工序，同时保证复合钢管焊缝处的耐腐蚀性能。
发明内容
本发明的目的之一在于提供一种复合钢管的制造方法，其能够充分利用高频直缝焊管机组连续高效的特点，不增加后续的非连续工序，同时保证复合钢管焊缝处的耐腐蚀性能。
为了实现上述目的，本发明提出了一种复合钢管的制造方法，其采用复合钢板为原料制造复合钢管，所述复合钢板包括基层和与基层轧制复合的复层；所述复合钢管的制造方法包括步骤：成型、焊接和去毛刺；先将复合钢板的两边向复合钢板的基层一侧折弯，然后再进行所述成型步骤，在所述成型步骤后，管坯的开口面全部为所述复层。
在本发明所述的制造方法中，巧妙地采用复合钢板的两边向复合钢板的基层一侧折弯，随后进行成型步骤，获得管坯。管坯的原开口面为基层和与基层轧制复合的复层，在所述成型步骤后，由于折弯，所以管坯的开口面全部为复层，使其易于焊接操作；且由于折弯高度高于复合钢板厚度，因而，焊接后无需增加离线的补焊工序。焊接时，复层金属部分被挤出，形成毛刺，去除毛刺后，焊缝处仍然保复层金属的完整性，从而保证复合钢管的耐腐蚀性能；同时保持足够的焊合面积，保证了焊缝的力学性能。换言之，只需对传统高频直缝焊管工艺稍作改动，而无需额外增加新的后续工艺即可实现复合钢管的生产，因而相较于现有技术而言，本发明所述的制造方法工艺更为简化，同时保证了复合钢管焊缝处的耐腐蚀性能。
进一步地，在本发明所述的复合钢管的制造方法中，折弯的角度θ为75-95°。在本发明所述的技术方案中，角度θ＜75°，将增加折弯变形量，提升难度，降低效率；角度θ＞95°，折弯部的端部在焊接前会提前接触，降低焊接的稳定性。
进一步地，在本发明所述的复合钢管的制造方法中，被折弯的折弯部的高度H为复合钢板厚度的1-2倍。
进一步地，在本发明所述的复合钢管的制造方法中，在所述成型步骤后，所述复层位于管坯的外表面一侧。
进一步地，在本发明所述的复合钢管的制造方法中，在所述成型步骤后，所述复层位于管坯的内表面一侧。
进一步地，在本发明所述的复合钢管的制造方法中，形成所述基层的金属材料为碳钢或合金钢。
进一步地，在本发明所述的复合钢管的制造方法中，形成所述复层的金属材料为不锈钢或铜合金。
本发明所述的复合钢管的制造方法，其采用复合钢板为原料制造复合钢管，该制造方法既充分利用高频直缝焊管机组连续高效的特点，不增加后续的非连续工序，又保证复合钢管焊缝处的耐腐蚀性能。
附图说明
图1示意了采用本发明所述的制造方法复合钢板折弯时的断面局部结构。
图2为实施例一的复合钢管在成型工序时的断面示意图。
图3为实施例一的复合钢管在焊接工序时的断面示意图。
图4为实施例一的复合钢管在去毛刺工序后的断面示意图。
图5为实施例二的复合钢管在成型工序时的断面示意图。
图6为实施例二的复合钢管在焊接工序时的断面示意图。
图7为实施例二的复合钢管在去毛刺工序后的断面示意图。
具体实施方式
下面将结合说明书附图和具体的实施例对本发明所述的复合钢管的制造方法做进一步的解释和说明，然而该解释和说明并不对本发明的技术方案构成不当限定。
图1示意了采用本发明所述的制造方法复合钢板折弯时的断面局部结构。
如图1所示，复合钢板包括基层1和与基层1轧制复合的复层2，复合钢板的两边向复合钢板的基层一侧折弯形成了折弯部11，随后进行成型步骤，以形成管坯。由图1中可以看出，折弯部11的开口面为复层2，即管坯的开口面为复层2。继而，通过将折弯部11焊接和去毛刺后获得所需的复合钢管。
如图1所示，θ表示折弯的角度，H表示被折弯的折弯部11的高度，t表示复合钢板厚度。
图2为实施例一的复合钢管在成型工序时的断面示意图。如图2所示，实施例一的复合钢管所采用的复合钢板包括基层1和与基层1轧制复合的复层2，复合钢板的两边向复合钢板的基层一侧折弯形成了折弯部，折弯部的高度与复合钢板的高度相同，成型后的管坯，其复层2位于管坯的内表面一侧。基层的金属材料为碳钢，复层的金属材料为不锈钢，在其他实施方式中，基层的金属材料为碳钢或合金钢，复层的金属材料为不锈钢或铜合金。
随后对管坯进行高频加热、焊接，图3为实施例一的复合钢管在焊接工序时的断面示意图。如图3所示，焊接时，形成了沿径向方向远离圆心方向突起的外毛刺4以及沿径向方向朝向圆心方向突起的内毛刺3，去毛刺后，复合钢管如图4所示。图4为实施例一的复合钢管在去毛刺工序后的断面示意图。去毛刺后的复合钢管经过常规工艺例如热处理、定径和检验后，即可得到工艺所需的冶金结合内衬不锈钢复合钢管。
图5为实施例二的复合钢管在成型工序时的断面示意图。如图5所示，实施例二的复合钢管所采用的复合钢板包括基层1和与基层1轧制复合的复层2，复合钢板的两边向复合钢板的基层一侧折弯形成了折弯部，折弯部的高度与复合钢板的高度相同，成型后的管坯，其复层2位于管坯的外表面一侧。
随后对管坯进行高频加热、焊接，图6为实施例二的复合钢管在焊接工序时的断面示意图。如图6所示，焊接时，形成了沿径向方向远离圆心方向突起的外毛刺4以及沿径向方向朝向圆心方向突起的内毛刺3，去毛刺后，复合钢管如图7所示。图7为实施例二的复合钢管在去毛刺工序后的断面示意图。去毛刺后的复合钢管经过常规工艺例如热处理、定径和检验后，即可得到工艺所需的冶金结合外覆不锈钢复合钢管。
由实施例一和实施例二可以看出，本发明所述的制造方法所说的复合钢管的复层既可以位于复合钢管的内表面，也可以位于复合钢管的外表面，因而使得本发明所述的制造方法工艺灵活简便。本发明所述的制造方法既充分利用高频直缝焊管机组连续高效的特点，不增加后续的非连续工序，又保证复合钢管焊缝处的耐腐蚀性能。
需要注意的是，以上列举的仅为本发明的具体实施例，显然本发明不限于以上实施例，随之有着许多的类似变化。本领域的技术人员如果从本发明公开的内容直接导出或联想到的所有变形，均应属于本发明的保护范围。

Claims (7)

1.一种复合钢管的制造方法，其采用复合钢板为原料制造复合钢管，所述复合钢板包括基层和与基层轧制复合的复层；所述复合钢管的制造方法包括步骤：成型、焊接和去毛刺；其特征在于：先将复合钢板的两边向复合钢板的基层一侧折弯，然后再进行所述成型步骤，在所述成型步骤后，管坯的开口面全部为所述复层。
2.如权利要求1所述的复合钢管的制造方法，其特征在于，折弯的角度θ为75-95°。
3.如权利要求1或2所述的复合钢管的制造方法，其特征在于，被折弯的折弯部的高度H为复合钢板厚度的1-2倍。
4.如权利要求1所述的复合钢管的制造方法，其特征在于，在所述成型步骤后，所述复层位于管坯的外表面一侧。
5.如权利要求1所述的复合钢管的制造方法，其特征在于，在所述成型步骤后，所述复层位于管坯的内表面一侧。
6.如权利要求1所述的复合钢管的制造方法，其特征在于，形成所述基层的金属材料为碳钢或合金钢。
7.如权利要求1或6所述的复合钢管的制造方法，其特征在于，形成所述复层的金属材料为不锈钢或铜合金。
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