CN113953318B - 一种针对lng液化汽船用4j36材料薄型带材冷轧加工的板型控制方法 - Google Patents
一种针对lng液化汽船用4j36材料薄型带材冷轧加工的板型控制方法 Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000005097 cold rolling Methods 0.000 title claims abstract description 13
- 239000003915 liquefied petroleum gas Substances 0.000 title claims description 5
- 238000005096 rolling process Methods 0.000 claims abstract description 54
- 238000003825 pressing Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 23
- 238000000137 annealing Methods 0.000 claims abstract description 10
- 230000007547 defect Effects 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
-
- 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
- C21D1/26—Methods of 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
- C21D8/0221—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
-
- 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
-
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B2001/221—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 plates, strips, bands or sheets of indefinite length by cold-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0071—Levelling the rolled product
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
本发明公开了一种针对LNG液化汽船用4J36材料薄型带材冷轧加工的板型控制方法,属于轧钢技术领域,包括以下步骤:型材预热:对型材进行辊轧升温加热;第一道轧制:对型材进行粗轧,并控制相应的下压量;第二道轧制:对型材进行中轧,并控制相应的下压量;第三道轧制:对型材进行精轧,并控制相应的下压量,并得到厚度小于0.4mm的冷轧带材;热处理:对冷轧带材进行退火处理,消除材料内部的残余应力;本发明通过三道轧制并控制轧制下压量,经过退火消除材料在轧制后的残余应力,进行拉矫,必要时进行二次拉矫,从而有效地消除冷轧带材在厚度小于0.4mm时产生的板型缺陷。
Description
技术领域
本发明属于轧钢技术领域,尤其涉及一种针对LNG液化汽船用4J36材料薄型带材冷轧加工的板型控制方法。
背景技术
冷轧是在常温状态下由热轧板加工而成,虽然在加工过程因为轧制也会使钢板升温,尽管如此还是叫冷轧。由热轧经过连续冷变形而成的冷轧,机械性能比较差,硬度太高,必须经过退火才能恢复其机械性能,没有退火的叫轧硬卷
针对LNG液化汽船用4J36材料的冷轧生产中,当板材的厚度小于0.4mm时,板材会出现斜纹、边浪、中浪等板型缺陷,在生产过程中,较难控制。
发明内容
本发明的目的在于:为了解决板材的厚度小于0.4mm时,导致板材会出现斜纹、边浪、中浪等板型的问题,而提出的一种针对LNG液化汽船用4J36材料薄型带材冷轧加工的板型控制方法。
为了实现上述目的,本发明采用了如下方法:一种针对LNG液化汽船用4J36材料薄型带材冷轧加工的板型控制方法,其包括以下步骤:
1)型材预热:对型材进行辊轧升温加热;
2)第一道轧制:对型材进行粗轧,并控制相应的下压量;
3)第二道轧制:对型材进行中轧,并控制相应的下压量;
4)第三道轧制:对型材进行精轧,并控制相应的下压量,并得到厚度小于0.4mm的冷轧带材;
5)热处理:对冷轧带材进行退火处理,消除材料内部的残余应力;
6)带材拉矫:对热处理后未完全冷却的冷轧带材使用拉矫设备拉矫,完成拉矫后对冷轧带材进行卷曲。
作为上述技术方案的进一步描述:
所述步骤2)中,下压量控制在0.07-0.15mm。
作为上述技术方案的进一步描述:
所述步骤3)中,下压量控制在0.03-0.11mm。
作为上述技术方案的进一步描述:
所述步骤4)中,下压量控制在0.02mm。
作为上述技术方案的进一步描述:
所述步骤6)中,经过初步拉矫后,检测冷轧带材表面缺陷情况,若任存在缺陷,增加拉矫设备进行二次拉矫。
综上所述,由于采用了上述技术方案,本发明的有益效果是:
本发明中,通过三道轧制并控制轧制下压量,经过退火消除材料在轧制后的残余应力,进行拉矫,必要时进行二次拉矫,从而有效地消除冷轧带材在厚度小于0.4mm时产生的板型缺陷。
附图说明
图1为一种针对LNG液化汽船用4J36材料薄型带材冷轧加工的板型控制方法的框图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
实施例1:
S01:型材预热:对型材进行辊轧升温加热;
S02:第一道轧制:对型材进行粗轧,并控制相应的下压量为0.15mm;
S03:第二道轧制:对型材进行中轧,并控制相应的下压量为0.03mm;
S04:第三道轧制:对型材进行精轧,并控制相应的下压量为0.02mm,并得到厚度小于0.4mm的冷轧带材;
S05:热处理:对冷轧带材进行退火处理,消除材料内部的残余应力;
S06:带材拉矫:对热处理后降温的冷轧带材使用拉矫设备拉矫,完成拉矫后对冷轧带材进行卷曲。
综上所述,由于采用了上述技术方案,本发明的有益效果是:
本发明中,通过三道轧制并控制轧制下压量,经过退火消除材料在轧制后的残余应力,进行拉矫,必要时进行二次拉矫,从而有效地消除冷轧带材在厚度小于0.4mm时产生的板型缺陷。
实施例2:
S01:型材预热:对型材进行辊轧升温加热;
S02:第一道轧制:对型材进行粗轧,并控制相应的下压量为0.15mm;
S03:第二道轧制:对型材进行中轧,并控制相应的下压量为0.03mm;
S04:第三道轧制:对型材进行精轧,并控制相应的下压量为0.02mm,并得到厚度小于0.4mm的冷轧带材;
S05:热处理:对冷轧带材进行退火处理,消除材料内部的残余应力;
S06:带材拉矫:对热处理后降温的冷轧带材使用拉矫设备拉矫,完成拉矫后对冷轧带材进行卷曲。
实施例3:
S01:型材预热:对型材进行辊轧升温加热;
S02:第一道轧制:对型材进行粗轧,并控制相应的下压量为0.07mm;
S03:第二道轧制:对型材进行中轧,并控制相应的下压量为0.11mm;
S04:第三道轧制:对型材进行精轧,并控制相应的下压量为0.02mm,并得到厚度小于0.4mm的冷轧带材;
S05:热处理:对冷轧带材进行退火处理,消除材料内部的残余应力;
S06:带材拉矫:对热处理后降温的冷轧带材使用拉矫设备拉矫,检查冷轧带材的板型仍然存在缺陷,使用拉矫设备拉矫,完成拉矫后对冷轧带材进行卷曲。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (2)
1.一种针对LNG液化汽船用4J36材料薄型带材冷轧加工的板型控制方法,其特征在于:包括以下步骤:
1)型材预热:对型材进行辊轧升温加热;
2)第一道轧制:对型材进行粗轧,并控制相应的下压量;所述步骤2)中,下压量控制在0.07-0.15mm;
3)第二道轧制:对型材进行中轧,并控制相应的下压量;所述步骤3)中,下压量控制在0.03-0.11mm;
4)第三道轧制:对型材进行精轧,并控制相应的下压量,并得到厚度小于0.4mm的冷轧带材;所述步骤4)中,下压量控制在0.02mm;
5)热处理:对冷轧带材进行退火处理,消除材料内部的残余应力;
6)带材拉矫:对热处理后未完全冷却的冷轧带材使用拉矫设备拉矫,完成拉矫后对冷轧带材进行卷曲。
2.根据权利要求1所述的一种针对LNG液化汽船用4J36材料薄型带材冷轧加工的板型控制方法,其特征在于,所述步骤6)中,经过初步拉矫后,检测冷轧带材表面缺陷情况,若任存在缺陷,增加拉矫设备进行二次拉矫。
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