CN116511239A - 一种双高棒产线连铸直轧生产hrb500e螺纹钢筋的方法 - Google Patents
一种双高棒产线连铸直轧生产hrb500e螺纹钢筋的方法 Download PDFInfo
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- 238000005096 rolling process Methods 0.000 title claims abstract description 60
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 41
- 238000009749 continuous casting Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 42
- 239000010959 steel Substances 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 17
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 229910052720 vanadium Inorganic materials 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 238000003723 Smelting Methods 0.000 claims description 7
- 229910052748 manganese Inorganic materials 0.000 claims description 7
- 239000011572 manganese Substances 0.000 claims description 7
- 229910052758 niobium Inorganic materials 0.000 claims description 7
- 239000010955 niobium Substances 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 6
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 6
- 238000005275 alloying Methods 0.000 claims description 6
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 229910000628 Ferrovanadium Inorganic materials 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000676 Si alloy Inorganic materials 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- JMAHHHVEVBOCPE-UHFFFAOYSA-N [Fe].[Nb] Chemical compound [Fe].[Nb] JMAHHHVEVBOCPE-UHFFFAOYSA-N 0.000 claims description 3
- JBKHOMILJMDXGC-UHFFFAOYSA-N [N].[Nb].[V] Chemical compound [N].[Nb].[V] JBKHOMILJMDXGC-UHFFFAOYSA-N 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 239000004615 ingredient Substances 0.000 claims description 3
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 claims description 3
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 2
- 230000008520 organization Effects 0.000 abstract 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910001257 Nb alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
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- B21B1/46—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 metal immediately subsequent to continuous casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
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- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/003—Rolling non-ferrous metals immediately subsequent to continuous casting, i.e. in-line rolling
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- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
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- 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
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- 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
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
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- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2275/00—Mill drive parameters
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Abstract
本发明属于钢铁生产技术领域,本发明涉及一种双高棒产线连铸直轧生产HRB500E螺纹钢筋的方法,该方法采用BOF→Ar站→LF→CC工艺路径以及钒氮铌复合合金化工艺与连铸直轧工艺,不需加热炉生产,采用V、Nb、N复合合金生产,开轧温度控制在≥950℃,中轧980±20℃、预精轧温度控轧在960±20℃、精轧960±20℃、上冷床960±20℃,实现了双高棒产线生产Ф12mmHRB500E螺纹钢筋的方法。该方法节约能源消耗,降低生产成本,提高钢筋的强度和韧性,保证钢筋的组织和性能稳定达标,提高生产效率和产品质量。
Description
技术领域
本发明属于钢铁生产技术领域,涉及一种双高棒产线连铸直轧生产HRB500E螺纹钢筋的方法。
背景技术
螺纹钢筋是一种广泛应用于建筑工程中的钢筋,具有较高的屈服强度和抗拉强度,以及良好的粘结性能。目前国内外已有的长材棒材产线,主要是采用加热炉生产HRB500E,采用合金元素生产,其生产工艺流程高炉铁水冶炼、铁水脱硫预处理、转炉钢水冶炼、吹氩、LF精炼、方坯连铸、加热炉加热、粗轧、中轧、预精轧、精轧、上冷床、精整。其工艺流程采用加热炉生产,开轧温度波动性较小,但需要消耗大量煤气,强屈比不易控制。
公开号为CN113403533A的中国专利,公开了一种高速棒材生产HRB500E螺纹钢筋的方法,该方法包括:依次进行的高炉铁水冶炼、铁水脱硫预处理、转炉钢水冶炼、吹氩、LF精炼、方坯连铸、加热炉加热、粗轧、中轧、预精轧、预精轧控冷及恢复、精轧、轧后控冷及恢复;所述高速棒材生产HRB500E螺纹钢筋的成分为:C:0.21~0.25Wt%,Si:0.65~0.80Wt%,Mn:1.2~1.35Wt%,P:≤0.04Wt%,S:≤0.035Wt%,V:0.03~0.06Wt%,Nb:0.008~0.02Wt%,N:0.007~0.017Wt%,B:0.001~0.003Wt%,Cr:0.1~0.2Wt%。该方法具有生产效率高、表面质量好等优点,但采用的合金是V、Nb、N、B、Cr合金成本较高。
公开号为CN114836674A的中国专利,公开了一种热轧带肋钢筋HRB500E的生产方法,包括钢坯在加热炉中进行加热及轧线的粗轧、中轧、精轧、水冷、在冷床上进行冷却、自然时效;加热炉中均热段的温度为1130℃~1160℃;开轧温度为1030℃~1060℃,进精轧温度为1020℃~1040℃,上冷床温度控制为900℃~940℃;成分为:0.21%~0.25%的C,0.40%~0.60%的Si,1.20%~1.50%的Mn,S≤0.045%,P≤0.045%,0.045%~0.055%的V,0.010%~0.020%的Nb,余量的Fe元素,保证了性能稳定达标,但采用的合金是V、Nb,进精轧温度在1000℃,温度较高。
发明内容
有鉴于此,本发明的目的在于解决现有HRB500E螺纹钢筋生产工艺的上述问题,提供一种双高棒产线连铸直轧生产HRB500E螺纹钢筋的方法。该方法不需加热炉生产,采用V、Nb、N复合合金生产,开轧温度控制在≥950℃,中轧980±20℃、预精轧温度控轧在960±20℃、精轧960±20℃、上冷床960±20℃,实现了双高棒产线生产HRB500E螺纹钢筋的方法。
为达到上述目的,本发明提供如下技术方案:
一种双高棒产线连铸直轧生产HRB500E螺纹钢筋的方法,包括如下步骤:
(1)配料:HRB500E螺纹钢钢筋按以下质量百分比配料:0.21%~0.25%的C,0.20%~0.40%的Si,1.30%~1.60%的Mn,S≤0.045%,P≤0.045%,0.040%~0.055%的V,0.015%~0.030%的Nb,0.0100%~0.0150%的N,其余为Fe和杂质;
(2)工艺流程:采用BOF→Ar站→LF→CC工艺路径以及钒氮铌复合合金化工艺,根据配料的成分要求,计算出需要的合金,在转炉进行冶炼;转炉出钢合金化采用锰硅合金+硅铁+高碳锰铁+钒铁合金配锰、硅、钒,LF工序采用高碳锰铁+硅铁合金对成分锰、硅进行调整,采用铌铁砂配铌;
(3)将钢水浇注成合格的方坯,采用连铸直轧工艺组织生产,连铸拉速控制在2.7m/min~2.9m/min、送钢温度要求≥970℃;
(4)输送轧钢厂轧制,轧钢工艺为:轧钢厂取消加热炉,粗轧开轧温度≥950℃,中轧980±20℃、预精轧温度控轧在960±20℃、精轧960±20℃、上冷床960±20℃、精整、打捆。
进一步,生产的螺纹钢筋的规格为φ12mm。
进一步,步骤(3)中方坯的断面要求为:170mm×170mm×12m,并增加连铸直轧工艺。
本发明的有益效果在于:
(1)本发明取消加热炉生产,节约能源消耗,降低生产成本;(2)本发明采用V、Nb、N复合合金生产,提高钢筋的强度和韧性,降低合金成本;(3)本发明通过控制连铸拉速和轧开轧温度,进预精轧、精轧、上冷床温度,保证钢筋的组织和性能稳定达标;(4)本发明提高了生产效率和产品质量。
本发明的其他优点、目标和特征在某种程度上将在随后的说明书中进行阐述,并且在某种程度上,基于对下文的考察研究对本领域技术人员而言将是显而易见的,或者可以从本发明的实践中得到教导。本发明的目标和其他优点可以通过下面的说明书来实现和获得。
具体实施方式
以下通过特定的具体实例说明本发明的实施方式,本领域技术人员可由本说明书所揭露的内容轻易地了解本发明的其他优点与功效。本发明还可以通过另外不同的具体实施方式加以实施或应用,本说明书中的各项细节也可以基于不同观点与应用,在没有背离本发明的精神下进行各种修饰或改变。
一种双高棒产线连铸直轧生产HRB500E螺纹钢筋的方法,用于生产Φ12mm规格的螺纹钢筋,包括如下步骤:
(1)配料:HRB500E螺纹钢钢筋按以下质量百分比配料:0.21%~0.25%的C,0.20%~0.40%的Si,1.30%~1.60%的Mn,S≤0.045%,P≤0.045%,0.040%~0.055%的V,0.015%~0.030%的Nb,0.0100%~0.0150%的N,其余为Fe和杂质;
(2)工艺流程:采用BOF→Ar站→LF→CC工艺路径以及钒氮铌复合合金化工艺,根据配料的成分要求,计算出需要的合金,在转炉进行冶炼;转炉出钢合金化采用锰硅合金+硅铁+高碳锰铁+钒铁合金配锰、硅、钒,LF工序采用高碳锰铁+硅铁合金对成分锰、硅进行调整,采用铌铁砂配铌;
(3)将钢水浇注成合格的方坯,方坯的断面要求为:170mm×170mm×12m。采用连铸直轧工艺组织生产,连铸拉速控制在2.7m/min~2.9m/min、送钢温度要求≥970℃;
(4)输送轧钢厂轧制,轧钢工艺为:轧钢厂取消加热炉,粗轧开轧温度≥950℃,中轧980±20℃、预精轧温度控轧在960±20℃、精轧960±20℃、上冷床960±20℃、精整、打捆。
具体的,轧制的公称直径Φ12mm,连铸拉速在2.82m/min开轧温度994℃,中轧991℃、预精轧温度控轧在953℃、精轧948℃、上冷床945℃,其产品力学屈服强度、强屈比等性能满足标准要求,如下表所示。
最后说明的是,以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本技术方案的宗旨和范围,其均应涵盖在本发明的权利要求范围当中。
Claims (3)
1.一种双高棒产线连铸直轧生产HRB500E螺纹钢筋的方法,其特征在于,包括如下步骤:
(1)配料:HRB500E螺纹钢钢筋按以下质量百分比配料:0.21%~0.25%的C,0.20%~0.40%的Si,1.30%~1.60%的Mn,S≤0.045%,P≤0.045%,0.040%~0.055%的V,0.015%~0.030%的Nb,0.0100%~0.0150%的N,其余为Fe和杂质;
(2)工艺流程:采用BOF→Ar站→LF→CC工艺路径以及钒氮铌复合合金化工艺,根据配料的成分要求,计算出需要的合金,在转炉进行冶炼;转炉出钢合金化采用锰硅合金+硅铁+高碳锰铁+钒铁合金配锰、硅、钒,LF工序采用高碳锰铁+硅铁合金对成分锰、硅进行调整,采用铌铁砂配铌;
(3)将钢水浇注成合格的方坯,采用连铸直轧工艺组织生产,连铸拉速控制在2.7m/min~2.9m/min、送钢温度要求≥970℃;
(4)输送轧钢厂轧制,轧钢工艺为:轧钢厂取消加热炉,粗轧开轧温度≥950℃,中轧980±20℃、预精轧温度控轧在960±20℃、精轧960±20℃、上冷床960±20℃、精整、打捆。
2.根据权利要求1所述的双高棒产线连铸直轧生产HRB500E螺纹钢筋的方法,其特征在于:生产的螺纹钢筋的规格为φ12mm。
3.根据权利要求2所述的双高棒产线连铸直轧生产HRB500E螺纹钢筋的方法,其特征在于:步骤(3)中方坯的断面要求为:170mm×170mm×12m,并增加连铸直轧工艺。
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CN117265423A (zh) * | 2023-10-16 | 2023-12-22 | 陕西钢铁集团有限公司 | 无加热无保温直接轧制生产hrb500e螺纹钢的方法 |
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