CN1103824C - 制造冷轧带材或板材的方法 - Google Patents

制造冷轧带材或板材的方法 Download PDF

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CN1103824C
CN1103824C CN99810709A CN99810709A CN1103824C CN 1103824 C CN1103824 C CN 1103824C CN 99810709 A CN99810709 A CN 99810709A CN 99810709 A CN99810709 A CN 99810709A CN 1103824 C CN1103824 C CN 1103824C
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cold
steel
annealing
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alloying element
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CN1317055A (zh
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B·恩格尔
K·D·霍恩
K·D·施米特
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ThyssenKrupp Steel Europe AG
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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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0273—Final recrystallisation annealing
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
    • C21D8/0215—Rapid solidification; Thin strip casting
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0268—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment between cold rolling steps
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • 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
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236—Cold rolling

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Lubricants (AREA)
  • Metal Rolling (AREA)
  • Manufacturing Of Steel Electrode Plates (AREA)

Abstract

本发明涉及由C、Al、Ti、V、Nb、分别最多为0.2%和Si、Mn分别最多为1%，和固氮所需量的硼(＞0.78×N)，其余组成为铁及不可避免的杂质的低合金钢制造冷轧带材或板材的方法，其中所述钢熔炼后铸造成板坯、薄板坯或带坯，在超过1100℃的初始温度且终止温度位于Ar3以下热轧，且其中热轧带材后经卷取和650℃以下冷轧，以后与冷轧程度无关地，冷轧带材在可能随钢的组成而变化且范围在520～780℃的较低的温度退火足够长的一段时间使得完全再结晶。本发明方法在制造完全再结晶的冷轧带材或板材时可简化工艺和降低生产成本。

Description

制造冷轧带材或板材的方法
本发明涉及由C、P、Al、Ti、V、Nb、S、B分别最多为2％和Si、Mn分别最多为1％，其余为铁和不可避免的杂质的低合金钢制造冷轧带材或板材的方法。熔炼后，一般采用连续铸造工艺将该钢铸造成板坯、薄板坯或带坯，然后热轧、冷轧和经再结晶退火。
冷轧带材和板材的完全再结晶化所需的退火温度水平会受到带钢制造的初期阶段的影响。例如，众所周知再结晶化温度可借助于热轧带材高的卷取温度和高的冷轧量来降低。
在专利文献JP5-239554A中公开了一种具有良好深冲性能和烘烤硬化性和成型性能的冷轧钢板的生产方法，该钢板含有0.0005-0.005的碳、0.02-0.50％的Mn、不高于0.007％的P、不高于0.005％的S、不高于0.005％的N，0.01-0.05的Ti，余量的铁和杂质，该方法包括在1100-1250℃初轧，在Ar3-100℃至Ar3+30℃的温度终轧，在550-800℃卷取，在较大的压下量为60-90％下冷轧，在750-850℃的较高温度下再结晶。
本发明的目标是减低制备完全再结晶的冷轧带材或板材的生产成本和相关制造费用。
为达这一目标，本发明提出在普通工艺中将板材或带材在超过1100℃的初始温度且终止温度位于Ar3线以下热轧，热轧带材在低于650℃的温度下卷取，然后，冷轧带材在与冷轧压缩比近乎无关的且在500～750℃间尽可能低的温度下冷轧足够的时间以保证完全再结晶化。
本发明基于以下令人惊奇的发现，即通过利用降低热轧终轧温度和低的卷取温度，能够在相对低的、与冷轧应变近乎无关的温度下获得冷轧带材的完全再结晶化。低温再结晶退火可节约能耗和费用。
根据本发明的一个实施方案，提供一种制造冷轧带材或板材的方法，包括将含C、Al、Ti、V、Nb分别最多为0.2％和Si、Mn分别最多为1％，和固定氮所需量的硼，即大于0.78×N的硼，其余为铁及不可避免的杂质的低合金钢经熔炼铸造成板坯、薄板坯或带坯，使板坯、薄板坯或带坯在超过1100℃的初始温度且终止温度位于Ar3线以下条件下热轧，所得到的热轧带材在低于650℃卷取和经最多50％的冷轧压缩比冷轧，由此所得的冷轧带材在与冷轧程度无关且根据钢的组成尽可能低的且在520～780℃之间的温度下退火足够的时间以进行完全再结晶。
根据本发明另一个实施方案，在上述制造冷轧带材或板材的方法中，在30％～50％之间的冷轧压缩比下进行冷轧。
根据本发明另一个实施方案，在上述制造冷轧带材或板材的方法中，在冷轧过程中带材在各冷轧步骤之间经过一次或多次中间退火。
根据本发明另一个实施方案，上述制造冷轧带材或板材的方法适用于C＜0.01％且无微合金化元素的钢和含有任意碳含量及微合金化元素的钢，其中在连续退火设备中再结晶化退火在700～780℃进行。
根据本发明另一个实施方案，上述制造冷轧带材或板材的方法中适用于超过0.1％的C且无微合金化元素的钢，其中在连续退火设备中再结晶化退火在600～680℃进行。
根据本发明另一个实施方案，上述制造冷轧带材或板材的方法适用于C＜0.01％且无微合金化元素的钢和含有任意碳含量及微合金化元素的钢，其中在分批退火设备中再结晶化退火在600～680℃进行。
根据本发明另一个实施方案，上述制造冷轧带材或板材的方法适用于超过0.1％的C且无微合金化元素的钢，其中在分批退火设备中再结晶化退火在520～600℃进行。
除了上述列出的合金含量外，该钢可以含有0.01％的氮和固定氮所需的一定量的硼(＞0.78×N)。除了这些以外，对再结晶化条件无有害影响的少量其它合金元素也是允许的。
如果可能，热轧终止温度应位于Ar3线下50℃，且卷取温度优选地在300～600℃。如果有最高0.01％的低的碳含量的钢或经Ti、V、Nb微合金化的钢能够经600～780℃完全再结晶退火，而非微合金化的钢能够在很大程度上不依赖于冷轧程度的甚至更低的500～680℃的温度下进行完全再结晶退火。
依据5个实施例更详尽的阐述本发明。
表1给出了A～D四种深拉钢的化学成分。图1～5分别示出了热轧和退火条件。
曲线的变化显示，依据本发明通过低的热轧终止温度和低的卷取温度相结合，实施例A4～C4的冷轧带材或板材，特别是在30～50％低的冷轧程度下，不但在分批退火(Haubenglühe)设备中(图3～5)而且在连铸设备中(图1～2)，相对于在较高的热轧终止温度和卷取温度下加工的相同组成的材料，再结晶温度能够大大降低。
表1
                                                     化学组成％w/w
  钢种       C     Si     Mn      P       S       Al       N     Ti     Nb
    A     0,003     0,01     0,08    0,008     0,005     0,021     0,0022     0,061     -
    B     0,035     0,01     0,20    0,010     0,008     0,030     0,0039      -     -
    C     0,003     0,01     0,15    0,006     0,004     0,001     0,0016      -     -
    D     0,037     0,02     0,22    0,012     0,009     0,042     0,0045      -     0,030

Claims (8)

1.制造冷轧带材或板材的方法，其中含C、Al、Ti、V、Nb分别最多为0.2％和Si、Mn分别最多为1％，和固定氮所需量的硼，即大于0.78×N的硼，其余为铁及不可避免的杂质的低合金钢经熔炼铸造成板坯、薄板坯或带坯，其中板坯、薄板坯或带坯在超过1100℃的初始温度且终止温度位于Ar3线以下条件下热轧，所得到的热轧带材在低于650℃卷取和经最多50％的冷轧压缩比冷轧，由此所得的冷轧带材在与冷轧程度无关且根据钢的组成尽可能低的且在520～780℃之间的温度下退火足够的时间以进行完全再结晶。
2.根据权利要求1的方法，其特征在于在30％～50％之间的冷轧压缩比下进行冷轧。
3.根据权利要求1的方法，其特征在于在冷轧过程中带材在各冷轧步骤之间经过一次或多次中间退火。
4.根据权利要求2的方法，其特征在于在冷轧过程中带材在各冷轧步骤之间经过一次或多次中间退火。
5.根据权利要求1～4中任一项的方法，适用于C＜0.01％且无微合金化元素的钢和含有任意碳含量及微合金化元素的钢，其中在连续退火设备中再结晶化退火在700～780℃进行。
6.根据权利要求1～4中任一项的方法，适用于超过0.1％的C且无微合金化元素的钢，其中在连续退火设备中再结晶化退火在600～680℃进行。
7.根据权利要求1～4中任一项的方法，适用于C＜0.01％且无微合金化元素的钢和含有任意碳含量及微合金化元素的钢，其中在分批退火设备中再结晶化退火在600～680℃进行。
8.根据权利要求1～4中任一项的方法，适用于超过0.1％的C且无微合金化元素的钢，其中在分批退火设备中再结晶化退火在520～600℃进行。
CN99810709A 1998-09-08 1999-09-06 制造冷轧带材或板材的方法 Expired - Fee Related CN1103824C (zh)

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US8333923B2 (en) * 2007-02-28 2012-12-18 Caterpillar Inc. High strength gray cast iron
RU2486973C2 (ru) * 2009-02-09 2013-07-10 Ниппон Стил Корпорейшн Титановый материал для горячей прокатки и способ его получения
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JPH05239554A (ja) * 1992-02-28 1993-09-17 Kobe Steel Ltd 焼付硬化性を有する超深絞り用冷延鋼板の製造方法

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ES2201830T3 (es) 2004-03-16
CN1317055A (zh) 2001-10-10
AU5973599A (en) 2000-03-27
CA2342934A1 (en) 2000-03-16
DE19840788C2 (de) 2000-10-05
US6582537B1 (en) 2003-06-24
CZ2001735A3 (cs) 2002-03-13
CZ300683B6 (cs) 2009-07-15
WO2000014288A1 (de) 2000-03-16
ATE243769T1 (de) 2003-07-15
SK286577B6 (sk) 2009-01-07

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