JP6227626B2 - 低Si含有量鋼ストリップ - Google Patents
低Si含有量鋼ストリップ Download PDFInfo
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- 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
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Description
600MPa鋼カテゴリーの最大引張強度Rmを有する鋼ストリップは、質量%で以下の成分:
C 0.08〜0.11%
Mn 1.70〜2.20%
Si 最大で0.1%
Cr 0.40〜0.70%
Mo 最大で0.3%
Ni 最大で1.0%
Al 0.01〜1.50%
を含み、任意で、
Nb 最大で0.07%
P 0.0005%以上
N 0.015%以下
Ti 0.1%以下
V 0.1%以下
B 0.01%以下
からなる群から選択される1種以上の元素を含んでなり、
Cr、Mo、およびNiの合計が少なくとも0.5%であり、
残部がFeおよび不可避不純物である。
Cr 0.4〜0.7%、好ましくは0.5〜0.6%
Mo 最大で0.3%、好ましくは0.01%未満
Ni 0〜1.0%、好ましくは0〜0.05%
である。
P 0.005%以上、有利には最大で0.05%
N 最大で0.015%
Nb 最大で0.07%、より好ましくは最大で0.005%
Ti 最大で0.1%
V 最大で0.1%
B 最大で0.01%
である。
以下:
マルテンサイト 2〜50%、好ましくは少なくとも5%
フェライト 50〜98%
任意で
パーライト 3%未満、好ましくは約0%
を含んでなる微細構造を有する。粒径は、有利には約30マイクロメータ未満である。
表1に示される組成を有する板は、通常の冷間圧延および連続アニーリング工程により作製される。熱間圧延後、ストリップを冷間圧延して、表2に示す最終厚さとした。実施例1〜2に対し、標準の製鋼および圧延手段で冷間圧延ストリップを作る。冷間圧延後、材料を標準アニーリングラインで連続的にアニーリングする。実施例1および2の関連データは、表3に示す。温度T1へ加熱した後、T2までの徐冷(速度1〜10℃/秒)を行い、次いで、温度T3までの急冷(速度20〜60℃/秒)を行う(関連データは表3に示す)。次に、材料を亜鉛めっきする。実施例3〜4は、同様の方法で作製した。
Claims (9)
- 600MPaの最大引張強度Rmを有する鋼ストリップであって、質量%で以下の成分:
C 0.08〜0.11%
Mn 1.70〜2.20%
Si 最大で0.1%
Cr 0.40〜0.70%
Mo 最大で0.3%
Ni 最大で1.0%
Al 0.1〜0.5%
Nb 最大で0.005%
P 0または0.0005%以上0.05%未満
N 0.015%以下
Ti 0.1%以下
V 0.1%以下
B 0.01%以下
残部
からなり、
Cr、Mo、およびNiの合計が少なくとも0.5%であり、
前記残部がFeおよび不可避不純物である、鋼ストリップ。 - Siが最大で0.08%である、請求項1に記載の鋼ストリップ。
- 以下の成分:
Mn 1.70〜1.95%
Si 0.02〜0.08%
を含んでなる、請求項1または2に記載の鋼ストリップ。 - 以下の成分:
Cr 0.50〜0.60%
Mo 最大で0.01%
Ni 最大で0.05%
を含んでなる、請求項1〜3のいずれか一項に記載の鋼ストリップ。 - Alが少なくとも0.2%である、請求項1〜4のいずれか一項に記載の鋼ストリップ。
- 以下:
マルテンサイト 2〜50%
フェライト 50〜98%
任意で
パーライト 3%未満
を含んでなる微細構造を有する、請求項1〜5のいずれか一項に記載の鋼ストリップ。 - Znを含んでなるコーティングで被覆された、請求項1〜6のいずれか一項に記載の鋼ストリップ。
- 溶融亜鉛めっきされた、請求項7に記載の鋼ストリップ。
- 前記コーティングが、質量%で0.3〜4.0%のMg、0.05〜6.0%のAl、不可避不純物および残部、ならびに最大で0.2%の、Pb、Sb、Ti、Ca、Mn、Sn、La、Ce、Cr、Ni、Zr、およびBiからなる群から選択される1種以上の追加元素からなり、前記残部が亜鉛である、請求項7または8に記載の鋼ストリップ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12002492.2 | 2012-04-05 | ||
EP12002492 | 2012-04-05 | ||
PCT/EP2013/001017 WO2013149734A1 (en) | 2012-04-05 | 2013-04-05 | Steel strip having a low si content |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015517033A JP2015517033A (ja) | 2015-06-18 |
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US9593400B2 (en) | 2012-04-05 | 2017-03-14 | Tata Steel Ijmuiden Bv | Steel strip having a low Si content |
KR101482359B1 (ko) | 2012-12-27 | 2015-01-13 | 주식회사 포스코 | 극저온 인성이 우수하고 저항복비 특성을 갖는 고강도 강판 및 그의 제조방법 |
CN113416892A (zh) * | 2014-02-05 | 2021-09-21 | 安赛乐米塔尔股份公司 | 可热成形的、可空气淬硬的、可焊的钢板 |
KR102075182B1 (ko) | 2015-12-24 | 2020-02-10 | 주식회사 포스코 | 도금성이 우수한 고강도 용융 아연계 도금 강재 및 그 제조방법 |
CN107058866B (zh) * | 2017-03-08 | 2019-06-04 | 内蒙古包钢钢联股份有限公司 | 铁素体马氏体冷轧双相钢及其制备方法 |
MX2020000928A (es) | 2017-07-25 | 2020-07-22 | Tata Steel Ijmuiden Bv | Tira, chapa o pieza de acero para producir una parte formada en caliente, parte y metodo de formacion de una pieza en una parte. |
CN107557695B (zh) * | 2017-08-28 | 2019-05-03 | 北京首钢冷轧薄板有限公司 | 一种CP980MPa复相钢的酸轧生产工艺控制方法 |
CN113088820A (zh) * | 2021-04-02 | 2021-07-09 | 苏州雷格姆海洋石油设备科技有限公司 | 深海井口套管挂用8630mod3-85k锻件的生产工艺 |
WO2023135550A1 (en) | 2022-01-13 | 2023-07-20 | Tata Steel Limited | Cold rolled low carbon microalloyed steel and method of manufacturing thereof |
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US9593400B2 (en) | 2012-04-05 | 2017-03-14 | Tata Steel Ijmuiden Bv | Steel strip having a low Si content |
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US20150071811A1 (en) | 2015-03-12 |
CA2869340C (en) | 2016-10-25 |
US20170240990A1 (en) | 2017-08-24 |
US20150064497A1 (en) | 2015-03-05 |
ES2891601T3 (es) | 2022-01-28 |
CN104411856B (zh) | 2016-09-21 |
WO2013149734A1 (en) | 2013-10-10 |
EP2834383B1 (en) | 2021-07-21 |
WO2013149733A1 (en) | 2013-10-10 |
US9695493B2 (en) | 2017-07-04 |
JP6359518B2 (ja) | 2018-07-18 |
CA2869339C (en) | 2016-10-25 |
ES2892350T3 (es) | 2022-02-03 |
CA2869340A1 (en) | 2013-10-10 |
EP2834384A1 (en) | 2015-02-11 |
KR20150000895A (ko) | 2015-01-05 |
CN104411856A (zh) | 2015-03-11 |
JP2015514868A (ja) | 2015-05-21 |
PT2834383T (pt) | 2021-09-29 |
CN104246000A (zh) | 2014-12-24 |
KR20150000896A (ko) | 2015-01-05 |
EP2834383A1 (en) | 2015-02-11 |
CN104246000B (zh) | 2016-10-12 |
CA2869339A1 (en) | 2013-10-10 |
JP2015517033A (ja) | 2015-06-18 |
WO2013149732A1 (en) | 2013-10-10 |
KR102018935B1 (ko) | 2019-09-05 |
US9593400B2 (en) | 2017-03-14 |
CN104411855A (zh) | 2015-03-11 |
KR102018936B1 (ko) | 2019-09-05 |
EP2834385A1 (en) | 2015-02-11 |
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