CN107365941B - 一种50钢冷硬卷的生产方法 - Google Patents
一种50钢冷硬卷的生产方法 Download PDFInfo
- Publication number
- CN107365941B CN107365941B CN201610311300.0A CN201610311300A CN107365941B CN 107365941 B CN107365941 B CN 107365941B CN 201610311300 A CN201610311300 A CN 201610311300A CN 107365941 B CN107365941 B CN 107365941B
- Authority
- CN
- China
- Prior art keywords
- steel
- temperature
- cold rolling
- reduction ratio
- rolling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 51
- 239000010959 steel Substances 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000005097 cold rolling Methods 0.000 claims abstract description 27
- 239000000126 substance Substances 0.000 claims abstract description 10
- 238000005098 hot rolling Methods 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 238000009749 continuous casting Methods 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000010079 rubber tapping Methods 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 2
- 238000000137 annealing Methods 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000007689 inspection Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- 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
- C21D8/0221—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
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
本发明涉及一种50钢冷硬卷的生产方法,包括钢水冶炼、连铸、热轧、罩式炉预退火、冷轧工艺过程,钢的化学成分质量百分含量为:C 0.50%~0.55%;Si 0.2%~0.3%;Mn 0.6%~0.7%;P≤0.02%;S≤0.01%;Als≤0.035%;其余为Fe及不可避免的杂质;控制热轧工艺参数和冷轧前预退火工艺参数,冷轧压下率按成品钢板厚度确定。本发明通过控制钢的化学成分、热轧及冷轧前预退火工艺参数及冷轧压下率,使50钢冷硬卷的硬度指标达到HRC20‑23,完全能够满足用户需求,提高了产品质量和成品率,增加了企业效益。
Description
技术领域
本发明涉及冷轧技术领域,尤其涉及一种50钢冷硬卷的生产方法。
背景技术
随着国内外钢材市场的竞争日趋激烈,市场利润空间已越来越来小,成本压力越来越大。优质碳素结构钢50钢主要用于汽车和航空工业等行业,相比其他冷轧品种有较高附加值,目前国内仅有鞍钢等少数钢厂生产。鞍钢1#线是冷轧厂唯一生产50钢产品的生产线,50钢产品也是1#线最主要的盈利品种。但用户在使用过程中普遍反映50钢热轧卷经冷轧后的冷硬卷的硬度偏高(抗拉强度达1050-1200MPa、硬度达HRC27-31,而用户要求抗拉强度750-900MPa、硬度HRC19-25),影响进一步的加工使用,因此迫切要求加以改进。
发明内容
本发明提供了一种50钢冷硬卷的生产方法,通过控制钢的化学成分、热轧及冷轧前预退火工艺参数及冷轧压下率,使50钢冷硬卷的硬度指标达到HRC20-23,完全能够满足用户需求,提高了产品质量和成品率,增加了企业效益。
为了达到上述目的,本发明采用以下技术方案实现:
一种50钢冷硬卷的生产方法,包括钢水冶炼、连铸、热轧、罩式炉预退火、冷轧工艺过程,其中:
1)钢的化学成分质量百分含量为:C 0.50%~0.55%;Si 0.2%~0.3%;Mn0.6%~0.7%;P≤0.02%;S≤0.01%;Als≤0.035%;其余为Fe及不可避免的杂质;
2)热轧工艺参数:
出炉温度:1210~1270℃;开轧温度:1040~1080℃;终轧温度:900~940℃;卷曲温度:730~770℃;
3)冷轧前预退火工艺参数:
点火后快速升温至400℃,400~720℃温度范围内均匀升温,升温时间10~12h,升温至720℃后保温10h以上;
4)冷轧压下率:
成品钢板厚度1.86~2.25mm时,压下率30~43%;
成品钢板厚度1.46~1.85mm时,压下率33~47%;
成品钢板厚度1.26~1.45mm时,压下率35~44%;
成品钢板厚度1.00~1.25mm时,压下率37~50%。
与现有技术相比,本发明的有益效果是:
通过控制钢的化学成分、热轧及冷轧前预退火工艺参数及冷轧压下率,使50钢冷硬卷的硬度指标达到HRC20-23,完全能够满足用户需求,提高了产品质量和成品率,增加了企业效益。
具体实施方式
本发明所述一种50钢冷硬卷的生产方法,包括钢水冶炼、连铸、热轧、罩式炉预退火、冷轧工艺过程,其中:
1)钢的化学成分质量百分含量为:C 0.50%~0.55%;Si 0.2%~0.3%;Mn0.6%~0.7%;P≤0.02%;S≤0.01%;Als≤0.035%;其余为Fe及不可避免的杂质;
2)热轧工艺参数:
出炉温度:1210~1270℃;开轧温度:1040~1080℃;终轧温度:900~940℃;卷曲温度:730~770℃;
3)冷轧前预退火工艺参数:
点火后快速升温至400℃,400~720℃温度范围内均匀升温,升温时间10~12h,升温至720℃后保温10h以上;
4)冷轧压下率:
成品钢板厚度1.86~2.25mm时,压下率30~43%;
成品钢板厚度1.46~1.85mm时,压下率33~47%;
成品钢板厚度1.26~1.45mm时,压下率35~44%;
成品钢板厚度1.00~1.25mm时,压下率37~50%。
以下实施例在以本发明技术方案为前提下进行实施,给出了详细的实施方式和具体的操作过程,但本发明的保护范围不限于下述的实施例。下述实施例中所用方法如无特别说明均为常规方法。
【实施例一】
1)钢的化学成分质量百分含量为:C 0.50%;Si 0.21%;Mn 0.61%;P 0.015%;S0.008%;Als 0.02%;其余为Fe及不可避免的杂质;
2)热轧工艺参数:
出炉温度:1215℃;开轧温度:1045℃;终轧温度:905℃;卷曲温度:735℃;
3)冷轧前预退火工艺参数:
点火后快速升温至400℃,400~720℃温度范围内均匀升温,10h后升温至720℃,保温10h;
4)冷轧压下率:
成品钢板厚度1.44mm,压下率37%;
5)成品性能检验结果:抗拉强度820MPa,硬度HRC21。
【实施例二】
1)钢的化学成分质量百分含量为:C 0.52%;Si 0.25%;Mn 0.65%;P 0.015%;S0.008%;Als 0.02%;
2)热轧工艺参数:
出炉温度:1240℃;开轧温度:1060℃;终轧温度:920℃;卷曲温度:750℃;
3)冷轧前预退火工艺参数:
点火后快速升温至400℃,400~720℃温度范围内均匀升温,11h后升温至720℃,保温10h;
4)冷轧压下率:
成品钢板厚度1.2mm,压下率43%;
5)成品性能检验结果:抗拉强度830MPa,硬度HRC22。
【实施例三】
1)钢的化学成分质量百分含量为:C 0.55%;Si 0.3%;Mn 0.7%;P 0.015%;S0.008%;Als 0.02%;
2)热轧工艺参数:
出炉温度:1260℃;开轧温度:1075℃;终轧温度:935℃;卷曲温度:760℃;
3)冷轧前预退火工艺参数:
点火后快速升温至400℃,400~720℃温度范围内均匀升温,12h后升温至720℃,保温10h;
4)冷轧压下率:
成品钢板厚度2.0mm,压下率39%;
5)成品性能检验结果:抗拉强度825MPa,硬度HRC21。
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 (1)
1.一种50钢冷硬卷的生产方法,其特征在于,包括钢水冶炼、连铸、热轧、罩式炉预退火、冷轧工艺过程,其中:
1)钢的化学成分质量百分含量为:C 0.50%~0.55%;Si 0.2%~0.3%;Mn 0.6%~0.7%;P≤0.02%;S≤0.01%;Als≤0.035%;其余为Fe及不可避免的杂质;
2)热轧工艺参数:
出炉温度:1210~1270℃;开轧温度:1040~1080℃;终轧温度:900~940℃;卷曲温度:730~770℃;
3)冷轧前预退火工艺参数:
点火后快速升温至400℃,400~720℃温度范围内均匀升温,升温时间10~12h,升温至720℃后保温10h以上;
4)冷轧压下率:
成品钢板厚度1.86~2.25mm时,压下率30~43%;
成品钢板厚度1.46~1.85mm时,压下率33~47%;
成品钢板厚度1.26~1.45mm时,压下率35~44%;
成品钢板厚度1.00~1.25mm时,压下率37~50%;
50钢冷硬卷的硬度指标为HRC20-23。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610311300.0A CN107365941B (zh) | 2016-05-12 | 2016-05-12 | 一种50钢冷硬卷的生产方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610311300.0A CN107365941B (zh) | 2016-05-12 | 2016-05-12 | 一种50钢冷硬卷的生产方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107365941A CN107365941A (zh) | 2017-11-21 |
CN107365941B true CN107365941B (zh) | 2019-02-26 |
Family
ID=60303840
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201610311300.0A Active CN107365941B (zh) | 2016-05-12 | 2016-05-12 | 一种50钢冷硬卷的生产方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107365941B (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109702011A (zh) * | 2019-03-12 | 2019-05-03 | 山东泰山钢铁集团有限公司 | 一种卷尺用高精度超宽50钢冷轧钢带及其生产方法 |
CN114990436A (zh) * | 2022-05-25 | 2022-09-02 | 鞍钢冷轧钢板(莆田)有限公司 | 一种微波炉用高硬度冷轧板及其生产方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103320686A (zh) * | 2013-05-27 | 2013-09-25 | 首钢总公司 | 冷轧薄板45号钢及其生产方法 |
-
2016
- 2016-05-12 CN CN201610311300.0A patent/CN107365941B/zh active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103320686A (zh) * | 2013-05-27 | 2013-09-25 | 首钢总公司 | 冷轧薄板45号钢及其生产方法 |
Also Published As
Publication number | Publication date |
---|---|
CN107365941A (zh) | 2017-11-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104946969B (zh) | 一种空调压缩机壳体用热轧酸洗钢板及其制造方法 | |
CN103695619B (zh) | 一种高磁感普通取向硅钢的制造方法 | |
CN104032108B (zh) | 一种双相不锈钢热轧卷的生产方法 | |
CN109055861B (zh) | 一种低铁损高磁感取向硅钢薄带及其制备方法 | |
CN110042310A (zh) | 高效无取向硅钢及其制备方法 | |
CN104878317A (zh) | 一种低镍奥氏体不锈钢卷的热轧生产方法 | |
CN104745935A (zh) | 冲压性能优良的冷轧钢板生产方法 | |
CN107779743A (zh) | 具有良好深冲性能的微碳热轧酸洗钢板及其制造方法 | |
CN104694817A (zh) | 超低碳冷轧钢板生产方法 | |
CN105420605A (zh) | 一种超低屈强比冷轧双相钢及其制造方法 | |
CN108517395A (zh) | 一种冷轧无取向电工钢带及其制备方法 | |
CN103509995B (zh) | 一种半工艺型冷轧无取向电工钢的制造方法 | |
CN104046760A (zh) | 一种电工钢板的生产方法 | |
CN105624382A (zh) | 一种V、Ti微合金钢的热轧方法 | |
CN102199734B (zh) | 高强度客车用301l不锈钢的制造方法 | |
CN112157135A (zh) | 一种热水器水箱外板用经济型冷轧钢板的生产方法 | |
CN107365941B (zh) | 一种50钢冷硬卷的生产方法 | |
CN103614628B (zh) | 一种65MnTiB钢及其热轧钢板制造方法 | |
CN104264046B (zh) | 超低碳无间隙原子软钢的生产方法 | |
CN110157979A (zh) | 一种改善钢板表面质量的轧制方法 | |
CN108531813B (zh) | 一种新能源汽车驱动电机用冷轧无取向电工钢及其生产方法 | |
CN103028608A (zh) | 一种热轧带钢表面氧化铁皮组分和厚度控制方法 | |
CN111318566B (zh) | 铁铬铝合金连铸板坯热轧钢卷的生产方法 | |
CN105779888A (zh) | 一种碳素结构钢的热轧生产方法 | |
CN108517460A (zh) | 一种含硼低碳热轧酸洗板及其生产方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |