CN117051311A - 一种高铁轨枕用盘条的生产方法 - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 241001669679 Eleotris Species 0.000 title claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 238000005096 rolling process Methods 0.000 claims abstract description 21
- 238000007670 refining Methods 0.000 claims abstract description 12
- 238000009849 vacuum degassing Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000009749 continuous casting Methods 0.000 claims abstract description 5
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 238000009987 spinning Methods 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 4
- 239000011651 chromium Substances 0.000 claims abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 4
- 238000004321 preservation Methods 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000011574 phosphorus Substances 0.000 claims abstract description 3
- 239000011593 sulfur Substances 0.000 claims abstract description 3
- 239000002893 slag Substances 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 238000010079 rubber tapping Methods 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 4
- 230000003749 cleanliness Effects 0.000 claims description 4
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000005997 Calcium carbide Substances 0.000 claims description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 239000010436 fluorite Substances 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-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 2
- 239000012535 impurity Substances 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 3
- 230000009466 transformation Effects 0.000 abstract description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 239000011572 manganese Substances 0.000 abstract 1
- 230000000903 blocking effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011513 prestressed concrete Substances 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- PYLLWONICXJARP-UHFFFAOYSA-N manganese silicon Chemical compound [Si].[Mn] PYLLWONICXJARP-UHFFFAOYSA-N 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009489 vacuum treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- 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
- C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
- C21D8/065—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires of ferrous alloys
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
本发明公开了一种高铁轨枕用盘条的生产方法,包括:转炉生产;LF炉精炼;VD真空脱气;连铸生产:正常拉速:1.8‑2.0m/min;过热度:25‑33℃;轧制:轧制Φ10mm盘条时开轧温度均为1000℃—1100℃,入精轧温度870‑900℃,吐丝温度850‑870℃,斯太尔摩冷却线保温罩全部打开,风机1‑5架风量100%开;盘条化学成分为0.76‑0.80wt%,硅含量0.20‑0.30wt%,锰含量0.65‑0.75wt%,磷含量小于等于0.015wt%,硫含量小于等于0.015wt%,铬含量0.18‑0.22wt%。本发明获得的钢材具有良好的组织转变和机械性能。
Description
技术领域
本发明涉及冶金技术领域,尤其涉及一种高铁轨枕用盘条的生产方法。
背景技术
预应力混凝土轨枕是铁路配件的一种。轨枕既要支承钢轨,又要保持钢轨的位置,还要把钢轨传递来的巨大压力再传递给道床。它必须具备一定的柔韧性和弹性。列车的重载、提速对铁路轨枕的质量和承载能力提出了更高的要求。高铁轨枕钢丝是制作预应力混凝土轨枕的关键材料,由其使用状态所决定,要求其具有较高的强度和塑性以及良好的冷变形能力,以适应拉拔生产工艺需要,因此该产品生产起来具有一定难度。
发明内容
为了解决上述技术问题,本发明的目的是提供一种高铁轨枕用盘条的生产方法。
为解决上述技术问题,本发明采用如下技术方案:
本发明一种高铁轨枕用盘条的生产方法,包括:
转炉生产:采用拉碳补吹,单渣操作,挡渣出钢,终脱氧剂使用SiAlMn,出钢过程中加入硅锰、锰铁合金;
LF炉精炼:LF炉精炼根据钢水成分及温度变化进行加辅料造渣,加合金进行微调和升温操作;加入白灰、萤石、电石,合金根据精炼就位成分进行微调锰铁;
VD真空脱气:钢包精炼后的钢水经VD炉真空脱气处理,进一步降低钢中有害气体含量,提高钢的洁净度;
连铸生产:正常拉速:1.8-2.0m/min;过热度:25-33℃;采用结晶器电磁搅拌;
轧制:小方坯送往高线轧制,小方坯在加热炉内加热时间大于2小时,轧制Φ10mm盘条时开轧温度均为1000℃—1100℃,入精轧温度870-900℃,吐丝温度850-870℃,斯太尔摩冷却线保温罩全部打开,风机1-5架风量100%开;
该盘条设计化学成分要求为:碳含量0.76-0.80wt%,硅含量0.20-0.30wt%,锰含量0.65-0.75wt%,磷含量小于等于0.015wt%,硫含量小于等于0.015wt%,铬含量0.18-0.22wt%。
进一步的,铸坯规格:150×150mm定尺12m;。
进一步的,正常拉速:1.9m/min。
与现有技术相比,本发明的有益技术效果:
本发明获得的钢材具有良好的组织转变和机械性能。
具体实施方式
一种高铁轨枕用盘条的生产方法,其特征是:该盘条设计化学成分要求为碳含量0.76-0.80wt%,硅含量0.20-0.30wt%,锰含量0.65-0.75wt%,磷含量小于等于0.015wt%,硫含量小于等于0.015wt%,铬含量0.18-0.22wt%。
工艺流程:铁水脱硫—转炉冶炼—LF精炼—VD真空处理—小方坯连铸—高线轧制
由复吹转炉冶炼,采用单渣法、炉后增碳工艺。出钢时使用挡渣球或挡渣塞挡渣。在全程吹氩状态下精炼,埋弧操作。精炼后的钢水经VD炉真空脱气处理,降低钢中有害气体含量,提高钢的洁净度。钢水由方坯铸机进行拉坯浇注,铸坯规格:150×150mm。
铸坯经高线28架连轧机组进行轧制,通过水箱冷却,控制吐丝温度,并由斯太尔摩风动冷却线强制冷却,以获得钢材良好的组织转变和机械性能。轧制规格:φ10mm。
工业试生产了4炉钢,具体的工艺参数控制如下:
转炉生产:采用拉碳补吹,单渣操作,挡渣出钢,终脱氧剂使用SiAlMn,出钢过程中加入硅锰、锰铁等合金。
LF炉精炼:LF炉精炼根据钢水成分及温度变化进行加辅料造渣,加合金进行微调和升温操作。加入白灰、萤石、电石,合金根据精炼就位成分进行微调锰铁。
VD真空脱气:钢包精炼后的钢水经VD炉真空脱气处理,进一步降低钢中有害气体含量,提高钢的洁净度。
连铸生产:铸坯规格:150×150mm定尺12m;正常拉速:1.9m/min;过热度:25-33℃;采用结晶器电磁搅拌。
轧制:小方坯送往高线轧制,小方坯在加热炉内加热时间大于2小时,轧制Φ10mm盘条时开轧温度均为1000℃—1100℃,入精轧温度870-900℃,吐丝温度850-870℃,斯太尔摩冷却线保温罩全部打开,风机1-5架风量100%开,盘条力学性能结果见表2。
表1化学成分
表2力学性能结果
检验结果表明采用设计的成分,盘条抗拉强度得到明显提升均大于1100MPa,面缩率大于35%,达到高铁轨枕钢丝的要求。
用户使用该盘条生产出的螺旋类轨枕钢丝和冷拉钢丝产品效果很好,无断丝现象,盘条性能稳定,完全满足用户生产要求,产出品检验结果见表3。
表3成品轨枕钢丝性能检验
采用本发明生产方法生产的成品轨枕钢丝性能优异,能更好的满足用户使用要求。
以上所述的实施例仅是对本发明的优选方式进行描述,并非对本发明的范围进行限定,在不脱离本发明设计精神的前提下,本领域普通技术人员对本发明的技术方案做出的各种变形和改进,均应落入本发明权利要求书确定的保护范围内。
Claims (3)
1.一种高铁轨枕用盘条的生产方法,其特征在于,包括:
转炉生产:采用拉碳补吹,单渣操作,挡渣出钢,终脱氧剂使用SiAlMn,出钢过程中加入硅锰、锰铁合金;
LF炉精炼:LF炉精炼根据钢水成分及温度变化进行加辅料造渣,加合金进行微调和升温操作;加入白灰、萤石、电石,合金根据精炼就位成分进行微调锰铁;
VD真空脱气:钢包精炼后的钢水经VD炉真空脱气处理,进一步降低钢中有害气体含量,提高钢的洁净度;
连铸生产:正常拉速:1.8-2.0m/min;过热度:25-33℃;采用结晶器电磁搅拌;
轧制:小方坯送往高线轧制,小方坯在加热炉内加热时间大于2小时,轧制Φ10mm盘条时开轧温度均为1000℃—1100℃,入精轧温度870-900℃,吐丝温度850-870℃,斯太尔摩冷却线保温罩全部打开,风机1-5架风量100%开;
盘条设计化学成分要求为:碳含量0.76-0.80wt%,硅含量0.20-0.30wt%,锰含量0.65-0.75wt%,磷含量小于等于0.015wt%,硫含量小于等于0.015wt%,铬含量0.18-0.22wt%,其余为Fe及不可避免的的杂质。
2.根据权利要求1所述的高铁轨枕用盘条的生产方法,其特征在于,铸坯规格:150×150mm定尺12m;。
3.根据权利要求1所述的高铁轨枕用盘条的生产方法,其特征在于,正常拉速:1.9m/min。
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