JP2005220423A - Ti含有肌焼き鋼 - Google Patents
Ti含有肌焼き鋼 Download PDFInfo
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- JP2005220423A JP2005220423A JP2004030993A JP2004030993A JP2005220423A JP 2005220423 A JP2005220423 A JP 2005220423A JP 2004030993 A JP2004030993 A JP 2004030993A JP 2004030993 A JP2004030993 A JP 2004030993A JP 2005220423 A JP2005220423 A JP 2005220423A
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/28—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step
- C23C8/30—Carbo-nitriding
- C23C8/32—Carbo-nitriding of ferrous surfaces
Abstract
【解決手段】 Ti含有肌焼き鋼は、質量%で、C:0.05〜0.3%、Si:2.0%以下(0%を含まない)、Mn:2.0%以下(0%を含まない)、P:0.03%以下(0%を含まない)、S:0.005〜0.2%、Cr:2.0%以下(0%を含まない)、Ti:0.01〜0.2%、Ca:0.0001〜0.02%、N:0.03%以下(0%を含まない)、及びO:0.002%以下(0%を含まない)を含有し、残部はFe及び不可避不純物である。
Description
C :0.05〜0.3%、
Si:2.0%以下(0%を含まない)、
Mn:2.0%以下(0%を含まない)、
P :0.03%以下(0%を含まない)、
S :0.005〜0.2%、
Cr:2.0%以下(0%を含まない)、
Ti:0.01〜0.2%、
Ca:0.0001〜0.02%、
N :0.03%以下(0%を含まない)、及び
O :0.002%以下(0%を含まない)
を含有し、残部はFe及び不可避不純物である点に要旨を有するものである。
下記表1〜4に示す化学成分の鋼材を小型溶製炉によって溶製し、直径50mmの棒状体に熱間鍛造した後、溶体化処理(1250℃×1時間)及び焼ならし処理(900℃×1時間)を行い、球状化焼鈍(750℃で5時間加熱した後、10℃/時間の速度で650℃まで冷却し、650℃に到達した時点で空冷に切り替えた)を行った。
切削加工によって図1に示すような直径20mm×高さ30mmの概略円筒状の試験片を作成した。なお該試験片には、側面に軸方向に沿った2つのV字型切り欠きが形成されており、このV字型切り欠きは図2に示すように、底部のRが0.05mm、角度60°、斜辺部の長さL=0.3〜0.05mmとなっている。
切り欠きがない以外は冷間鍛造性の場合と同様の試験片を圧縮率70%で冷間鍛造した後、温度950℃、975℃、1000℃、または1025℃で3時間保持し、水冷後の結晶粒度を調べた。3時間保持しても、結晶粒が粗大(JISに規定する粒度番号が4番以下)とならなかった最高の温度を求めた。該温度が高いほど、結晶粒の粗大化防止特性に優れている。なお975℃は、通常の浸炭処理の最高温度程度である。
Claims (6)
- 質量%で、
C :0.05〜0.3%、
Si:2.0%以下(0%を含まない)、
Mn:2.0%以下(0%を含まない)、
P :0.03%以下(0%を含まない)、
S :0.005〜0.2%、
Cr:2.0%以下(0%を含まない)、
Ti:0.01〜0.2%、
Ca:0.0001〜0.02%、
N :0.03%以下(0%を含まない)、及び
O :0.002%以下(0%を含まない)
を含有し、残部はFe及び不可避不純物であるTi含有肌焼き鋼。 - さらにAl:0.2%以下(0%を含まない)、Nb:0.1%以下(0%を含まない)、及びV:0.5%以下(0%を含まない)から選択された少なくとも1種を含有する請求項1に記載のTi含有肌焼き鋼。
- さらにNi:3%以下(0%を含まない)、及びCu:0.5%以下(0%を含まない)から選択された少なくとも1種を含有する請求項1又は2に記載のTi含有肌焼き鋼。
- さらにMo:1.0%以下(0%を含まない)、及びB:0.005%以下(0%を含まない)から選択された少なくとも1種を含有する請求項1〜3のいずれかに記載のTi含有肌焼き鋼。
- さらにPb:0.1%以下(0%を含まない)、及びBi:0.1%以下(0%を含まない)から選択された少なくとも1種を含有する請求項1〜4のいずれかに記載のTi含有肌焼き鋼。
- さらにMg:0.01%以下(0%を含まない)、及びREM:0.1%以下(0%を含まない)を含有する請求項1〜5のいずれかに記載のTi含有肌焼き鋼。
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JP2004030993A JP4847681B2 (ja) | 2004-02-06 | 2004-02-06 | Ti含有肌焼き鋼 |
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Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008081841A (ja) * | 2006-08-28 | 2008-04-10 | Kobe Steel Ltd | 冷間鍛造性および結晶粒粗大化防止特性に優れた肌焼鋼およびそれから得られる機械部品 |
JP2008106308A (ja) * | 2006-10-25 | 2008-05-08 | Sanyo Special Steel Co Ltd | 疲労強度に優れた鋼部品の製造方法および鋼部品 |
JP2009084589A (ja) * | 2007-09-27 | 2009-04-23 | Kobe Steel Ltd | 被削性に優れた機械構造用鋼および機械構造用部品 |
JP2010024549A (ja) * | 2008-06-19 | 2010-02-04 | Kobe Steel Ltd | 機械構造用鋼 |
EP2159294A1 (en) * | 2007-06-28 | 2010-03-03 | Kabushiki Kaisha Kobe Seiko Sho | Steel for mechanical structure excelling in machinability and process for producing the same |
JP4528363B1 (ja) * | 2009-04-06 | 2010-08-18 | 新日本製鐵株式会社 | 冷間加工性、切削性、浸炭焼入れ後の疲労特性に優れた肌焼鋼及びその製造方法 |
WO2010116555A1 (ja) * | 2009-04-06 | 2010-10-14 | 新日本製鐵株式会社 | 冷間加工性、切削性、浸炭焼入れ後の疲労特性に優れた肌焼鋼及びその製造方法 |
WO2012108460A1 (ja) * | 2011-02-10 | 2012-08-16 | 新日本製鐵株式会社 | 浸炭用鋼、浸炭鋼部品、及び、その製造方法 |
JP2017133052A (ja) * | 2016-01-26 | 2017-08-03 | 新日鐵住金株式会社 | 浸炭時の粗大粒防止特性と疲労特性と被削性に優れた肌焼鋼およびその製造方法 |
US9796158B2 (en) | 2011-02-10 | 2017-10-24 | Nippon Steel & Sumitomo Metal Corporation | Steel for carburizing, carburized steel component, and method of producing the same |
WO2020138432A1 (ja) * | 2018-12-28 | 2020-07-02 | 日本製鉄株式会社 | 鋼材 |
-
2004
- 2004-02-06 JP JP2004030993A patent/JP4847681B2/ja not_active Expired - Lifetime
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008081841A (ja) * | 2006-08-28 | 2008-04-10 | Kobe Steel Ltd | 冷間鍛造性および結晶粒粗大化防止特性に優れた肌焼鋼およびそれから得られる機械部品 |
JP2008106308A (ja) * | 2006-10-25 | 2008-05-08 | Sanyo Special Steel Co Ltd | 疲労強度に優れた鋼部品の製造方法および鋼部品 |
EP2159294A1 (en) * | 2007-06-28 | 2010-03-03 | Kabushiki Kaisha Kobe Seiko Sho | Steel for mechanical structure excelling in machinability and process for producing the same |
EP2159294A4 (en) * | 2007-06-28 | 2012-04-04 | Kobe Steel Ltd | STEEL FOR A MECHANICAL STRUCTURE WITH EXCELLENT WORKABILITY AND MANUFACTURING METHOD THEREFOR |
JP2009084589A (ja) * | 2007-09-27 | 2009-04-23 | Kobe Steel Ltd | 被削性に優れた機械構造用鋼および機械構造用部品 |
JP2010024549A (ja) * | 2008-06-19 | 2010-02-04 | Kobe Steel Ltd | 機械構造用鋼 |
CN102378822B (zh) * | 2009-04-06 | 2014-05-14 | 新日铁住金株式会社 | 冷加工性、切削性、渗碳淬火后的疲劳特性优良的表面硬化钢及其制造方法 |
JP4528363B1 (ja) * | 2009-04-06 | 2010-08-18 | 新日本製鐵株式会社 | 冷間加工性、切削性、浸炭焼入れ後の疲労特性に優れた肌焼鋼及びその製造方法 |
WO2010116555A1 (ja) * | 2009-04-06 | 2010-10-14 | 新日本製鐵株式会社 | 冷間加工性、切削性、浸炭焼入れ後の疲労特性に優れた肌焼鋼及びその製造方法 |
EP2418296A4 (en) * | 2009-04-06 | 2017-05-17 | Nippon Steel & Sumitomo Metal Corporation | Steel for case hardening which has excellent cold workability and machinability and which exhibits excellent fatigue characteristics after carburizing and quenching, and process for production of same |
JPWO2012108460A1 (ja) * | 2011-02-10 | 2014-07-03 | 新日鐵住金株式会社 | 浸炭用鋼、浸炭鋼部品、及び、その製造方法 |
US10391742B2 (en) | 2011-02-10 | 2019-08-27 | Nippon Steel Corporation | Steel for carburizing, carburized steel component, and method of producing the same |
JP5135563B2 (ja) * | 2011-02-10 | 2013-02-06 | 新日鐵住金株式会社 | 浸炭用鋼、浸炭鋼部品、及び、その製造方法 |
WO2012108460A1 (ja) * | 2011-02-10 | 2012-08-16 | 新日本製鐵株式会社 | 浸炭用鋼、浸炭鋼部品、及び、その製造方法 |
CN103119188A (zh) * | 2011-02-10 | 2013-05-22 | 新日铁住金株式会社 | 渗碳用钢、渗碳钢部件及其制造方法 |
US9797045B2 (en) | 2011-02-10 | 2017-10-24 | Nippon Steel & Sumitomo Metal Corporation | Steel for carburizing, carburized steel component, and method of producing the same |
US9796158B2 (en) | 2011-02-10 | 2017-10-24 | Nippon Steel & Sumitomo Metal Corporation | Steel for carburizing, carburized steel component, and method of producing the same |
US10392707B2 (en) | 2011-02-10 | 2019-08-27 | Nippon Steel Corporation | Steel for carburizing, carburized steel component, and method of producing the same |
JP2017133052A (ja) * | 2016-01-26 | 2017-08-03 | 新日鐵住金株式会社 | 浸炭時の粗大粒防止特性と疲労特性と被削性に優れた肌焼鋼およびその製造方法 |
WO2020138432A1 (ja) * | 2018-12-28 | 2020-07-02 | 日本製鉄株式会社 | 鋼材 |
CN113260717A (zh) * | 2018-12-28 | 2021-08-13 | 日本制铁株式会社 | 钢材 |
JPWO2020138432A1 (ja) * | 2018-12-28 | 2021-11-04 | 日本製鉄株式会社 | 鋼材 |
JP7099549B2 (ja) | 2018-12-28 | 2022-07-12 | 日本製鉄株式会社 | 鋼材 |
CN113260717B (zh) * | 2018-12-28 | 2023-03-21 | 日本制铁株式会社 | 钢材 |
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