JP2007113079A5 - - Google Patents
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- JP2007113079A5 JP2007113079A5 JP2005306644A JP2005306644A JP2007113079A5 JP 2007113079 A5 JP2007113079 A5 JP 2007113079A5 JP 2005306644 A JP2005306644 A JP 2005306644A JP 2005306644 A JP2005306644 A JP 2005306644A JP 2007113079 A5 JP2007113079 A5 JP 2007113079A5
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特開平４−２６７１９号公報には質量％でＣ０．１％以下、Cr１２〜１４％、Si２．０％以下、Ni０．５％以下、Mn０．７５％以下、Ｎ０．１％以下、Ｐ０．０４％以下、Al０．１％以下、Ｓ０．０３％以下、Ｃ＋Ｎが０．０４％以上０．１０％以下、次式で表されるＮｉ−ｂａｌが−５＜Ni−bal＜−３．５ （式;Ni−bal＝３０（Ｃ＋Ｎ）＋０．５Mn＋Ni＋８．２−１．１（１．５Si＋Cr））を満足し、残部不可避不純物およびFeよりなる鋼を１３００〜１１００℃に加熱し、１０００℃以下で熱間圧延を終了するように圧延したのち、放冷を行うことよりなる、降伏強さ３５．０kg/mm２以上、伸び１５％以上の安価なクロムステンレス棒鋼を製造する方法が開示されている。
このようなCr量のステンレス棒鋼は安価でしかも優れた耐食性を有している。鉄筋の性能としては、素材自身の耐食性に加えて、コンクリートとの高い付着強度を有することが重要であるが、特開平４−２６７１９号公報には付着強度に関しては検討されていなかった。
Japanese Patent Application Laid-Open No. 4-26719 discloses that C 0.1% or less, Cr 12 to 14%, Si 2.0% or less, Ni 0.5% or less, Mn 0.75% or less, N 0.1% or less, P 0.04 by mass%. % Or less, Al 0.1% or less, S 0.03% or less, C + N is 0.04% or more and 0.10% or less, and Ni-bal represented by the following formula is −5 <Ni-bal <−3.5 ( Ni-bal = 30 (C + N) + 0.5Mn + Ni + 8.2-1.1 (1.5Si + Cr)), and the steel consisting of the remaining inevitable impurities and Fe is heated to 1300-1100 ° C. A method of manufacturing an inexpensive chromium stainless steel bar having a yield strength of 35.0 kg / mm 2 or more and an elongation of 15% or more, which is formed by rolling after finishing hot rolling and allowing to cool, is disclosed.
Such stainless steel bars with a Cr content are inexpensive and have excellent corrosion resistance. As for the performance of the reinforcing bars, in addition to the corrosion resistance of the material itself, it is important to have high adhesion strength with concrete, but JP-A-4-26719 has not studied the adhesion strength.
また、特開２００２−２１２６８２号公報にはCr量が ５．０質量％超で、かつ少量のCoを含有する鉄筋用Cr含有棒鋼が開示されている。しかしながらこの特開２００２−２１２６８２号公報にも、付着強度に関しては検討されていなかった。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005306644A JP4624904B2 (en) | 2005-10-21 | 2005-10-21 | Stainless deformed steel bar with excellent durability in concrete structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005306644A JP4624904B2 (en) | 2005-10-21 | 2005-10-21 | Stainless deformed steel bar with excellent durability in concrete structures |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2007113079A JP2007113079A (en) | 2007-05-10 |
| JP2007113079A5 true JP2007113079A5 (en) | 2008-08-28 |
| JP4624904B2 JP4624904B2 (en) | 2011-02-02 |
Family
ID=38095541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005306644A Active JP4624904B2 (en) | 2005-10-21 | 2005-10-21 | Stainless deformed steel bar with excellent durability in concrete structures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4624904B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009214160A (en) * | 2008-03-12 | 2009-09-24 | Mizushima General Service Kk | Method for bending shear reinforcement wire |
| JP2011026686A (en) * | 2009-07-29 | 2011-02-10 | Aichi Steel Works Ltd | Method for manufacturing chromium-based stainless-steel reinforcing bar |
| JP2012057338A (en) * | 2010-09-08 | 2012-03-22 | Kiyomiya Osamu | Concrete structure member using stainless steel reinforcing bars |
| JP5925548B2 (en) * | 2011-07-19 | 2016-05-25 | 濱中ナット株式会社 | Method for manufacturing screw rebar |
| JP5934550B2 (en) * | 2012-03-30 | 2016-06-15 | 新日鐵住金ステンレス株式会社 | Chromium-containing deformed steel bar with excellent corrosion resistance in concrete structures |
| JP5934551B2 (en) * | 2012-03-30 | 2016-06-15 | 新日鐵住金ステンレス株式会社 | Stainless steel deformed steel bar with excellent corrosion resistance in concrete structures |
| JP6030847B2 (en) * | 2012-04-26 | 2016-11-24 | 愛鋼株式会社 | Manufacturing method of stainless deformed wire rod for concrete rebar |
| JP7081062B1 (en) * | 2022-02-21 | 2022-06-06 | 利弘 岩▲崎▼ | Sharp threaded rebar and lightweight fittings |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51115271A (en) * | 1975-04-02 | 1976-10-09 | Kobe Steel Ltd | Mill rolls for manufacturing deformed steel bars |
| JPS51115272A (en) * | 1975-04-02 | 1976-10-09 | Kobe Steel Ltd | Method of reclaiming mill rolls for deformed steel bars |
| JP2581267B2 (en) * | 1990-05-23 | 1997-02-12 | 住友金属工業株式会社 | Method for producing high strength, high ductility 13Cr stainless steel |
| JP2704834B2 (en) * | 1994-05-02 | 1998-01-26 | 高周波熱錬株式会社 | High-adhesion, high-strength deformed steel bar and method for producing the same |
| GB9721974D0 (en) * | 1997-10-17 | 1997-12-17 | Rother Boiler Company Limited | Construction fitting |
| JP3922823B2 (en) * | 1998-04-13 | 2007-05-30 | 積水化学工業株式会社 | Building materials, buildings, building units, structures for building units, walls, and floors |
| JPH11323504A (en) * | 1998-05-12 | 1999-11-26 | Nippon Steel Corp | Stainless steel for structural purpose hard to generate ununiform-type general corrosion and product thereof |
| JPH11323507A (en) * | 1998-05-13 | 1999-11-26 | Nippon Steel Corp | High strength and high toughness stainless steel sheet for building structure, production thereof and building structure using these |
| JP4465883B2 (en) * | 2001-01-17 | 2010-05-26 | Ｊｆｅスチール株式会社 | Cr-containing steel bars and reinforced concrete structures for rebars with excellent corrosion resistance in concrete |
| JP4207447B2 (en) * | 2001-07-13 | 2009-01-14 | 大同特殊鋼株式会社 | Stainless steel rebar and manufacturing method thereof |
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2005
- 2005-10-21 JP JP2005306644A patent/JP4624904B2/en active Active
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