WO2007114781A1 - Hot-working steel - Google Patents
Hot-working steel Download PDFInfo
- Publication number
- WO2007114781A1 WO2007114781A1 PCT/SE2007/050203 SE2007050203W WO2007114781A1 WO 2007114781 A1 WO2007114781 A1 WO 2007114781A1 SE 2007050203 W SE2007050203 W SE 2007050203W WO 2007114781 A1 WO2007114781 A1 WO 2007114781A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- steel
- content
- weight
- steel according
- hot
- Prior art date
Links
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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- 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
- 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
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- 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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
Definitions
- the invention relates to hot- working steel, i.e. steel intended to be used in the working in hot condition of a working material.
- Typical examples of the use of the steel are tools for the extrusion pressing of light metals, primarily aluminium. Another form of use is in forging tools.
- the invention also relates to use of the steel in the manufacturing of hot- working tools and to tools manufactured from the steel.
- Extrusion pressing means that material in a plasticized condition is pressed through a restriction/nozzle in which the extruded profile/shape of the extrusion pressed material is formed.
- an extrusion pressing nozzle must have high strength in combination with good resistance to hot wear as well as good resistance to tempering at high temperatures, since a material such as aluminium is normally extruded at temperatures of about 500-600 0 C.
- a well known and long used hot- working steel is denoted H13 (or alternatively HIl) according to AISI and has the following nominal composition in % by weight. 0.30 - 0.40 C, 0.20- 0.40 Mn, 0.80-1.20 Si, 4.75-5.50 Cr, 1.25-1.75 Mo, 0.80-1.20 V, balance iron and unavoidable impurities, and for Hl 1, in % by weight: 0.30-0.50 V, the remainder the same as for H 13.
- H13 or alternatively HIl
- a hot-working steel can now be provided that, for most applications, has properties comparable with a traditional H13 steel but having a alloying cost that is almost the half (at the metal prices of today). Based on the fact that different steels of H13 type have been on the market for a long time, it is realised that it must be considered surprising that we have been able to find an alloy that is so efficient in solving the above mentioned problems, especially when considering that the important properties of resistance to hot wear against aluminium and thermal conductivity are improved as compared to a traditional H13 alloy.
- Carbon should be present in an adequate amount to give the steel the desired hardness after heat treatment and to contribute to hardenability. Accordingly, there must be at least 0.3% and for the best result about 0.4% of carbon. Too much carbon has a negative effect on toughness and hence the upper limit should be about 0.45%. Silicon is present as a residual element from the manufacturing of the steel, at a content of normally at least 0.2%, most often about 1%. Silicon increases the carbon activity in the steel and hence it contributes to give the steel an adequate hardness. It also contributes to an adequate resistance to oxidation and tempering. Contents that are too high may lead to brittleness problems due to solution hardening and hence the maximum content of silicon in the steel is 1.5%, preferably not more than 1.2%.
- Manganese, chromium and molybdenum should be present in the steel at an amount high enough to give the steel an adequate hardenability.
- Molybdenum has the property that it, besides contributing to hardenability also contributes to a good tempering resistance. Hence, it has been proven that molybdenum is needed at a content of at least 0.3% but not more than 0.8%. Preferably, it is used 0.6% of molybdenum.
- chromium also contributes to the alloy's oxidation resistance and it should be present at a content of at least 1.5% but not more than 3.0%.
- the nominal content of chromium is preferably 2.6%.
- Manganese should be present at a content of at least 0.7% in order to contribute in giving the steel a desired hardenability at the limited content of molybdenum and chromium that characterises the steel.
- the steel should not contain more than 1.8% manganese.
- the nominal content of manganese is preferably 1.4 %.
- Vanadium should be present in the steel at a content of at least 0.4% and not more than 0.7%. Vanadium also contributes to give the steel good tempering resistance, good resistance to wear and also contributes to good strength by forming vanadium carbides that contribute to the formation of a relatively fine crystal structure.
- Fig. 1 shows a graph over the desired resistance to hot wear, for gas nitrided samples in a 4 h test
- Fig. 2 shows the corresponding test results in an 8 h test.
- Three alloys have been made in the form of laboratory scale ingots with a weight of 50 kg, by the following process: Forging at 127O 0 C to the dimension 60 x 60 mm. Soft- annealing at 850°C/2h, cooling by 10°C/h to 600 0 C and thereafter free cooling in air.
- the alloys are heat treated according to Table 2 below.
- Plate samples having the dimension 5 x 10 x 30 mm are produced of each species according to Table 2.
- Fig. 1 shows the volume worn off after about 4 h for gas nitrided samples.
- the graph shows that both samples produced according to the invention, i.e. samples 6 and 7, have improved resistance to wear as compared with the reference steels (sample no. 2).
- Fig. 2 shows the result from a corresponding 8 h test, showing that an improved resistance to wear could be confirmed for the invention also in such an experiment.
- the improvement is more than 50% in respect of resistance to wear, as compared with a traditional H13 steel (sample 2).
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 Steel (AREA)
- Heat Treatment Of Articles (AREA)
- Forging (AREA)
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ570919A NZ570919A (en) | 2006-04-06 | 2007-03-30 | Hot-working steel |
MX2008012631A MX2008012631A (es) | 2006-04-06 | 2007-03-30 | Acero de trabajo en caliente. |
JP2009504159A JP5185923B2 (ja) | 2006-04-06 | 2007-03-30 | 熱間加工用鋼鉄 |
CA002659249A CA2659249A1 (en) | 2006-04-06 | 2007-03-30 | Hot-working steel |
AU2007232532A AU2007232532B2 (en) | 2006-04-06 | 2007-03-30 | Hot-working steel |
EP07748364A EP2002025A1 (en) | 2006-04-06 | 2007-03-30 | Hot-working steel |
US12/281,607 US20090191086A1 (en) | 2006-04-06 | 2007-03-30 | Hot-working steel |
BRPI0710268-2A BRPI0710268A2 (pt) | 2006-04-06 | 2007-03-30 | aço para trabalho a quente |
NO20084230A NO20084230L (no) | 2006-04-06 | 2008-10-09 | Varmebearbeidet stal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0600797A SE529809C2 (sv) | 2006-04-06 | 2006-04-06 | Varmarbetsstål |
SE0600797-5 | 2006-04-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007114781A1 true WO2007114781A1 (en) | 2007-10-11 |
Family
ID=38563958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE2007/050203 WO2007114781A1 (en) | 2006-04-06 | 2007-03-30 | Hot-working steel |
Country Status (16)
Country | Link |
---|---|
US (1) | US20090191086A1 (ja) |
EP (1) | EP2002025A1 (ja) |
JP (1) | JP5185923B2 (ja) |
KR (1) | KR20090010187A (ja) |
CN (1) | CN101415854A (ja) |
AU (1) | AU2007232532B2 (ja) |
BR (1) | BRPI0710268A2 (ja) |
CA (1) | CA2659249A1 (ja) |
MX (1) | MX2008012631A (ja) |
NO (1) | NO20084230L (ja) |
NZ (1) | NZ570919A (ja) |
RU (1) | RU2430186C2 (ja) |
SE (1) | SE529809C2 (ja) |
SG (1) | SG170824A1 (ja) |
TW (1) | TWI355425B (ja) |
WO (1) | WO2007114781A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101978088A (zh) * | 2008-03-18 | 2011-02-16 | 尤迪霍尔姆斯有限责任公司 | 钢、制造钢坯件的方法和制造钢组件的方法 |
WO2011109881A1 (pt) * | 2010-03-08 | 2011-09-15 | Villares Metals S/A | Aço para ferramentas de extrusão |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019119898A (ja) * | 2017-12-28 | 2019-07-22 | 愛知製鋼株式会社 | Cvtリング素材、cvtリング部材及びこれらの製造方法 |
US20210040591A1 (en) * | 2018-05-14 | 2021-02-11 | Hitachi Metals, Ltd. | Additive layer manufactured hot work tool, method for manufacturing the same, and metal powder for additive layer manufacturing hot work tool |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB913525A (en) * | 1960-02-18 | 1962-12-19 | Crucible Steel Co America | Low cost alloy steel |
US4853181A (en) | 1986-06-18 | 1989-08-01 | Wert David E | Hot work tool steel |
US4886640A (en) | 1988-08-22 | 1989-12-12 | Carpenter Technology Corporation | Hot work tool steel with good temper resistance |
EP0632139A1 (de) | 1993-06-28 | 1995-01-04 | Thyssen Stahl Aktiengesellschaft | Verwendung eines Warmarbeitsstahls |
GB2294058A (en) * | 1994-09-29 | 1996-04-17 | Nsk Ltd | Rolling bearing |
JP2001131683A (ja) * | 1999-11-09 | 2001-05-15 | Sanyo Special Steel Co Ltd | 小ロット生産用金型鋼 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1850953A (en) * | 1925-06-19 | 1932-03-22 | Percy A E Armstrong | Heat, rust, and acid resisting ferrous alloy |
JPS524414A (en) * | 1975-06-24 | 1977-01-13 | Hitachi Ltd | Reinforced rolls for rolling |
JPS5380318A (en) * | 1976-12-27 | 1978-07-15 | Daido Steel Co Ltd | Hot tool steel with excellent high temperature strength |
JPS5456913A (en) * | 1977-10-15 | 1979-05-08 | Daido Steel Co Ltd | Steel for hot rolling mold |
JPS5782458A (en) * | 1980-11-07 | 1982-05-22 | Hitachi Metals Ltd | High toughness tool steel for hot working |
JP3352889B2 (ja) * | 1996-10-16 | 2002-12-03 | 山陽特殊製鋼株式会社 | 窒化特性に優れた熱間工具鋼 |
JP2002088450A (ja) * | 2000-09-14 | 2002-03-27 | Daido Steel Co Ltd | 熱間工具鋼 |
JP4812220B2 (ja) * | 2002-05-10 | 2011-11-09 | 株式会社小松製作所 | 高硬度高靭性鋼 |
WO2005061747A1 (ja) * | 2003-12-19 | 2005-07-07 | Daido Steel Co.,Ltd | 耐溶損性に優れた熱間工具鋼及び金型部材 |
-
2006
- 2006-04-06 SE SE0600797A patent/SE529809C2/sv not_active IP Right Cessation
-
2007
- 2007-03-30 SG SG201102360-3A patent/SG170824A1/en unknown
- 2007-03-30 CN CNA2007800117009A patent/CN101415854A/zh active Pending
- 2007-03-30 RU RU2008136560/02A patent/RU2430186C2/ru not_active IP Right Cessation
- 2007-03-30 BR BRPI0710268-2A patent/BRPI0710268A2/pt not_active IP Right Cessation
- 2007-03-30 EP EP07748364A patent/EP2002025A1/en not_active Withdrawn
- 2007-03-30 MX MX2008012631A patent/MX2008012631A/es active IP Right Grant
- 2007-03-30 AU AU2007232532A patent/AU2007232532B2/en not_active Ceased
- 2007-03-30 NZ NZ570919A patent/NZ570919A/en not_active IP Right Cessation
- 2007-03-30 KR KR1020087027258A patent/KR20090010187A/ko not_active Application Discontinuation
- 2007-03-30 US US12/281,607 patent/US20090191086A1/en not_active Abandoned
- 2007-03-30 WO PCT/SE2007/050203 patent/WO2007114781A1/en active Application Filing
- 2007-03-30 CA CA002659249A patent/CA2659249A1/en not_active Abandoned
- 2007-03-30 JP JP2009504159A patent/JP5185923B2/ja not_active Expired - Fee Related
- 2007-04-03 TW TW096111725A patent/TWI355425B/zh not_active IP Right Cessation
-
2008
- 2008-10-09 NO NO20084230A patent/NO20084230L/no not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB913525A (en) * | 1960-02-18 | 1962-12-19 | Crucible Steel Co America | Low cost alloy steel |
US4853181A (en) | 1986-06-18 | 1989-08-01 | Wert David E | Hot work tool steel |
US4886640A (en) | 1988-08-22 | 1989-12-12 | Carpenter Technology Corporation | Hot work tool steel with good temper resistance |
EP0632139A1 (de) | 1993-06-28 | 1995-01-04 | Thyssen Stahl Aktiengesellschaft | Verwendung eines Warmarbeitsstahls |
GB2294058A (en) * | 1994-09-29 | 1996-04-17 | Nsk Ltd | Rolling bearing |
JP2001131683A (ja) * | 1999-11-09 | 2001-05-15 | Sanyo Special Steel Co Ltd | 小ロット生産用金型鋼 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101978088A (zh) * | 2008-03-18 | 2011-02-16 | 尤迪霍尔姆斯有限责任公司 | 钢、制造钢坯件的方法和制造钢组件的方法 |
WO2011109881A1 (pt) * | 2010-03-08 | 2011-09-15 | Villares Metals S/A | Aço para ferramentas de extrusão |
Also Published As
Publication number | Publication date |
---|---|
JP5185923B2 (ja) | 2013-04-17 |
SG170824A1 (en) | 2011-05-30 |
EP2002025A1 (en) | 2008-12-17 |
RU2430186C2 (ru) | 2011-09-27 |
NZ570919A (en) | 2011-07-29 |
RU2008136560A (ru) | 2010-05-20 |
MX2008012631A (es) | 2008-10-13 |
TWI355425B (en) | 2012-01-01 |
SE0600797L (sv) | 2007-10-07 |
AU2007232532B2 (en) | 2011-06-02 |
SE529809C2 (sv) | 2007-11-27 |
US20090191086A1 (en) | 2009-07-30 |
NO20084230L (no) | 2008-10-30 |
CN101415854A (zh) | 2009-04-22 |
JP2009532585A (ja) | 2009-09-10 |
CA2659249A1 (en) | 2007-10-11 |
AU2007232532A1 (en) | 2007-10-11 |
KR20090010187A (ko) | 2009-01-29 |
TW200741017A (en) | 2007-11-01 |
BRPI0710268A2 (pt) | 2011-08-09 |
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