JP2012041632A5 - - Google Patents
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- JP2012041632A5 JP2012041632A5 JP2011181964A JP2011181964A JP2012041632A5 JP 2012041632 A5 JP2012041632 A5 JP 2012041632A5 JP 2011181964 A JP2011181964 A JP 2011181964A JP 2011181964 A JP2011181964 A JP 2011181964A JP 2012041632 A5 JP2012041632 A5 JP 2012041632A5
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Description
強度及び耐摩耗性を増すために、炭化物を形成し得る合金元素を鋼組成に添加することが示唆されてきた。その例は、欧州特許第0672761号及び米国特許第6547846号に開示されている。欧州特許第0672761号は、2.6%のCr、2.3%のMo、2%のV、0.55%のC、1.0%のSi、及び0.8%のMnを含む鋼合金を記載している。米国特許第6547846号は、4.0%のCr、2.0%のMo、2.0%のW、1.0〜1.8%のV、0.32〜0.35%のMn、0.46〜1.0%のSi、及び0.48〜0.75%のCを含む鋼合金を開示している。さらに、米国特許第6632301B2号は、最大で2.6%のCr、最大で2.3%のMo、最大0.56%のW、及び最大で0.9%のVを有する種々の鋼合金を開示している。 To increase strength and wear resistance, it has been suggested to add alloying elements to the steel composition that can form carbides. Examples are disclosed in EP 0 672 761 and US Pat. No. 6,547,846. European Patent No. 0672761 is a steel containing 2.6% Cr, 2.3% Mo, 2% V, 0.55% C, 1.0% Si, and 0.8% Mn. An alloy is described. US Pat. No. 6,547,846 includes 4.0% Cr, 2.0% Mo, 2.0% W, 1.0-1.8% V, 0.32-0.35% Mn, A steel alloy containing 0.46 to 1.0% Si and 0.48 to 0.75% C is disclosed. In addition, US Pat. No. 6,632,301 B2 describes various steel alloys having up to 2.6% Cr, up to 2.3% Mo, up to 0.56% W, and up to 0.9% V. Is disclosed.
本発明は、重量%で、以下の組成:C:0.4〜0.8、Si:0.4〜1.2、Mn:0.2〜0.55、Cr:3.5〜4.5、W:1.5〜4.0、及びMo:1.0〜1.8、残部Fe及び通常存在する不純物を有する鋼合金からなるストリップ鋼製品に関する。ストリップ鋼製品は、好ましくは、コーターブレード、ドクターブレード、及びクレープブレードなどの印刷及び製紙ブレードに使用される。 The present invention, in Weight%, the following composition: C: 0.4~0.8, Si: 0.4~1.2 , Mn: 0.2~0.55, Cr: 3.5~4 .5, W: 1.5-4.0, and Mo: 1.0-1.8, with respect to a strip steel product comprising a steel alloy having the balance Fe and impurities normally present. Strip steel products are preferably used in printing and papermaking blades such as coater blades, doctor blades, and crepe blades.
炭素
炭素含有量は材料の焼入れ性及びその硬さに影響する。材料を焼入れするために、Cの含有量は、少なくともおよそ0.4重量%である必要がある。より多量に存在する場合、炭素は炭化物を形成し、それが合金の硬さをさらに増す。しかし、Cの含有量が高すぎると、処理が困難になる。したがって、Cの含有量は最大で0.8重量%に制限するべきである。本発明の合金には、適切な量の炭化物及び良好な焼入れ性を達成するために、0.4〜0.8重量%の炭素含有量が選択される。本発明の一実施形態によると、炭素含有量は0.45〜0.7重量%である。炭素含有量の範囲は、炭素含有量が0.5(a)、0.55(b)、0.6(c)、及び0.65(d)重量%である、図1a−dに示されるThermoCalc計算により確かめられる。他の構成要素は表1の試料Aのとおりである。
Carbon The carbon content affects the hardenability of the material and its hardness. To quench the material, the C content should be at least about 0.4 by weight%. When present in higher amounts, the carbon forms carbides that further increase the hardness of the alloy . However, if the C content is too high, the treatment becomes difficult. Therefore, the C content should be limited to at most 0.8 by weight%. The alloys of the present invention, in order to achieve a carbide and good hardenability of the appropriate amount of carbon content of 0.4 - 0.8 by weight% is selected. According to one embodiment of the present invention, the carbon content is from 0.45 to 0.7 by weight%. Range of carbon content, carbon content 0.5 (a), 0.55 (b ), it is 0.6 (c), and 0.65 (d) Weight% in FIG. 1a-d Confirmed by the shown ThermoCalc calculation. Other components are as shown in Sample A in Table 1.
ケイ素
ケイ素は、製造プロセス、例えば脱酸の結果として常に存在する。また、無心焼入れが好ましい場合の焼入れ処理を促進する。さらに、ケイ素は高温強度を向上させる。しかし、高過ぎる濃度のケイ素は、高強度材料に望まれないフェライトを安定化する。本合金組成によると、ケイ素の含有量は0.4〜1.2重量%である。一実施形態によると、含有量は最大0.4〜0.9重量%である。
Silicon Silicon is always present as a result of manufacturing processes such as deoxidation. In addition, the quenching process is promoted when the coreless quenching is preferred. In addition, silicon improves high temperature strength. However, too high a concentration of silicon stabilizes ferrite that is not desired in high strength materials. According to the alloy composition, the content of silicon is 0.4 to 1.2 by weight%. According to one embodiment, content is maximum 0.4 to 0.9 by weight%.
マンガン
Mnは製造プロセスの結果として存在して、脱酸を促進し、硫黄の悪影響を打ち消す。マンガンは降伏強度及び引張強度を向上させるとともに、無心焼入れを促進する。高すぎる濃度のMnは、高濃度の残留オーステナイトをもたらすが、残留オーステナイトの危険性に関する好適なMn含有量は、他の合金元素に依存する。本組成によると、Mnの含有量は0.2〜0.55重量%である。一実施形態によると、Mnの含有量は0.20〜0.40重量%である。
Manganese Mn is present as a result of the manufacturing process, promoting deoxidation and counteracting the negative effects of sulfur. Manganese improves yield strength and tensile strength, and promotes non-center quenching. A concentration of Mn that is too high results in a high concentration of retained austenite, but the preferred Mn content for the risk of retained austenite depends on the other alloying elements. According to the present composition, the content of Mn is 0.2 to 0.55 by weight%. According to one embodiment, the Mn content is 0.20 to 0.40 by weight%.
クロム
クロムは合金の強度並びに耐摩耗性を向上させる。クロムは炭素とともに炭化物を形成する。Crは、空気、油、又は水の中での急冷中に十分なマルテンサイトを形成可能にすることにより、鋼に十分な焼入れ性も与える。しかし、Crの含有量が高すぎると、例えばVの所望の炭化物の安定性を低下させる。本発明の組成は、3.5〜4.5重量%のCrを含む。
Chromium Chromium improves the strength and wear resistance of the alloy . Chromium forms carbides with carbon. Cr also provides sufficient hardenability to the steel by allowing sufficient martensite to form during quenching in air, oil, or water. However, if the Cr content is too high, for example, the stability of the desired carbide of V is reduced. The composition of the present invention includes 3.5 to 4.5 by weight% of Cr.
タングステン
タングステンは、炭素とともに炭化物を形成する。その結果として、耐摩耗性が増加する。さらに、Wはベイナイトの形成を抑制するので、無心焼入れも促進される。Wは高温強度も向上させる。それは、材料の良好な刃先の先鋭化を与える。本発明によると、好ましい効果を得るためには、1.5重量%のタングステン含有量が必要である。しかし、高含有量の炭素と組み合わされた高含有量のタングステンは、初期製造段階において多量の炭化物、すなわち一次炭化物を生成させ、したがって、例えば熱延による材料の処理が困難になる。したがって、本発明の合金のWの最大含有量は、4重量%に、好ましくは最大で2.5重量%に制限される。一実施形態によると、W含有量は1.5〜2.5重量%である。
Tungsten Tungsten forms a carbide with carbon. As a result, wear resistance is increased. Furthermore, since W suppresses the formation of bainite, the coreless quenching is also promoted. W also improves high temperature strength. It gives a good edge sharpening of the material. According to the present invention, in order to obtain a favorable effect, it is necessary tungsten content of 1.5 by weight%. However, a high content of tungsten combined with a high content of carbon produces a large amount of carbide, i.e., primary carbide, in the initial manufacturing stage, thus making it difficult to process the material, for example by hot rolling. Therefore, the maximum content of W in the alloy of the present invention, the quadruple mass%, is preferably limited to 2.5 by weight% at the maximum. According to one embodiment, W content is 1.5 to 2.5 by weight%.
モリブデン
Moは合金の高温強度を増加させる。合金の他の元素のいくつかと同様に、Moも炭素とともに炭化物を形成する。また、降伏強度を増加させ、無心焼入れを促進する。Moの含有量が高すぎると、処理の間に鋼が酸化されやすくなり、製造プロセスをより困難にすることがある。したがって、本発明の合金は1〜1.8重量%のMoを含む。
Molybdenum Mo increases the high temperature strength of the alloy . Like some of the other elements of the alloy , Mo forms carbides with carbon. It also increases the yield strength and promotes incentive quenching. If the Mo content is too high, the steel is likely to be oxidized during processing, which may make the manufacturing process more difficult. Therefore, the alloy of the present invention comprises 1 to 1.8 by weight% of Mo.
不純物
上記の元素に加え、使用されるスクラップの組成により、数種の不純物が常に存在する。そのような不純物の例はNi及びCuであり、この2種の元素はそれぞれ最大0.2重量%に制限しなければならない。さらに、例えば脱酸又は熱間延性のための、通常存在する製鋼合金添加物によっても不純物は存在する。
Impurities In addition to the above elements, there are always several impurities, depending on the composition of the scrap used. Examples of such impurities are Ni and Cu, the two elements must be limited up to 0.2 by weight%, respectively. Furthermore, impurities are also present due to the steelmaking alloy additives normally present, for example for deoxidation or hot ductility.
本発明鋼組成の範囲内の公称組成を持ついくつかの試料を、溶解炉中の従来の冶金処理、再溶解、鋳造、鍛造、及び熱延により製造した。試料の平均を、表1及び以下において試料Aと表す。表1は、市販の比較試料も表すが、試料Bは、欧州特許第0672761号に開示された合金に相当する鋼組成であり、Cは従来の炭素鋼であり、Dは高クロム合金である。含有量は重量%で示す。 Several samples with a nominal composition within the range of the steel composition of the present invention were produced by conventional metallurgical processing, remelting, casting, forging, and hot rolling in a melting furnace. The average of the samples is represented as Sample A in Table 1 and below. Table 1 also represents a commercially available comparative sample, but sample B is a steel composition corresponding to the alloy disclosed in EP 0 672 761, C is a conventional carbon steel and D is a high chromium alloy . . Content indicated by Weight%.
Claims (8)
C:0.4〜0.8
Si:0.4〜1.2
Mn:0.2〜0.55
Cr:3.5〜4.5
W:1.5〜4.0
Mo:1.0〜1.8
残部Fe及び不可避的不純物を有する鋼合金からなり、
前記鋼合金がタングステン及びクロムの炭化物を含み、前記炭化物が1μm未満の直径を有することを特徴とするストリップ鋼製品。 In Weight%, the following composition:
C: 0.4 to 0.8
Si: 0.4 to 1.2
Mn: 0.2 to 0.55
Cr: 3.5 to 4.5
W: 1.5-4.0
Mo: 1.0-1.8
It consists of a steel alloy with the balance Fe and inevitable impurities,
A strip steel product, wherein the steel alloy comprises tungsten and chromium carbides, the carbides having a diameter of less than 1 μm.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1050861-2 | 2010-08-23 | ||
SE1050861A SE535064C2 (en) | 2010-08-23 | 2010-08-23 | Cold rolled and cured strip steel product |
Publications (3)
Publication Number | Publication Date |
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JP2012041632A JP2012041632A (en) | 2012-03-01 |
JP2012041632A5 true JP2012041632A5 (en) | 2016-02-12 |
JP5908686B2 JP5908686B2 (en) | 2016-04-26 |
Family
ID=44645475
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2011181964A Active JP5908686B2 (en) | 2010-08-23 | 2011-08-23 | Cold rolled and quenched strip steel products |
Country Status (4)
Country | Link |
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EP (1) | EP2423345B1 (en) |
JP (1) | JP5908686B2 (en) |
CN (1) | CN102373373B (en) |
SE (1) | SE535064C2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2896714B1 (en) * | 2014-01-17 | 2016-04-13 | voestalpine Precision Strip AB | Creping blade and method for its manufacturing |
EP3031982B1 (en) * | 2014-12-10 | 2017-03-29 | voestalpine Precision Strip AB | A long life cermet coated crêping blade |
EP3165367A1 (en) | 2015-11-04 | 2017-05-10 | BTG Eclépens S.A. | Doctor blade, inking arrangement and use of doctor blade in flexographic printing |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2509640A1 (en) * | 1981-07-17 | 1983-01-21 | Creusot Loire | PROCESS FOR PRODUCING A COMPOSITE METAL PART AND PRODUCTS OBTAINED |
SE502969C2 (en) * | 1994-02-17 | 1996-03-04 | Uddeholm Steel Strip | Use of a steel alloy as material for coating scrapers in the form of cold rolled strips |
JPH10298709A (en) * | 1997-04-25 | 1998-11-10 | Hitachi Metals Ltd | Tool steel for hot working excellent in wear resistance, and tool steel product |
JPH11229031A (en) * | 1998-02-13 | 1999-08-24 | Hitachi Metals Ltd | Production of high speed tool steel tool |
JPH11279640A (en) * | 1998-03-30 | 1999-10-12 | Hitachi Metals Ltd | High speed tool steel strip excellent in flatness, and its manufacture |
SE512970C2 (en) * | 1998-10-30 | 2000-06-12 | Erasteel Kloster Ab | Steel, the use of the steel, the product made of the steel and the way of making the steel |
US6632301B2 (en) | 2000-12-01 | 2003-10-14 | Benton Graphics, Inc. | Method and apparatus for bainite blades |
JP2004315840A (en) * | 2003-04-11 | 2004-11-11 | Daido Steel Co Ltd | Cold working tool steel superior in machinability, and manufacturing method therefor |
SE526191C2 (en) * | 2003-12-19 | 2005-07-26 | Sandvik Ab | Egg-provided tools and methods for making them |
JP4403875B2 (en) * | 2004-05-14 | 2010-01-27 | 大同特殊鋼株式会社 | Cold work tool steel |
JP4857811B2 (en) * | 2006-02-27 | 2012-01-18 | Jfeスチール株式会社 | Steel for knives |
CN101153374B (en) * | 2006-09-27 | 2010-09-08 | 宝山钢铁股份有限公司 | Steel for paper cutter blade and method of producing the same |
-
2010
- 2010-08-23 SE SE1050861A patent/SE535064C2/en unknown
-
2011
- 2011-06-22 EP EP11170995.2A patent/EP2423345B1/en active Active
- 2011-08-23 JP JP2011181964A patent/JP5908686B2/en active Active
- 2011-08-23 CN CN201110246690.5A patent/CN102373373B/en active Active
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