WO2012160594A1 - ばね用オーステナイト系ステンレス鋼及びばね用ステンレス加工材 - Google Patents

ばね用オーステナイト系ステンレス鋼及びばね用ステンレス加工材 Download PDF

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Publication number
WO2012160594A1
WO2012160594A1 PCT/JP2011/002835 JP2011002835W WO2012160594A1 WO 2012160594 A1 WO2012160594 A1 WO 2012160594A1 JP 2011002835 W JP2011002835 W JP 2011002835W WO 2012160594 A1 WO2012160594 A1 WO 2012160594A1
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WO
WIPO (PCT)
Prior art keywords
spring
stainless steel
mass
steel
content
Prior art date
Application number
PCT/JP2011/002835
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
高宏 飛弾
琳琳 魏
靖之 塚本
貴之 大嶋
Original Assignee
日本金属工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本金属工業株式会社 filed Critical 日本金属工業株式会社
Priority to PCT/JP2011/002835 priority Critical patent/WO2012160594A1/ja
Priority to TW101117391A priority patent/TWI534276B/zh
Publication of WO2012160594A1 publication Critical patent/WO2012160594A1/ja

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    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • 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
    • C21D9/02—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for springs
    • 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
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • 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
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/001—Austenite

Definitions

  • SUS301 and SUS304 which are standardized in JIS G 4313, are known as typical spring stainless steels.
  • SUS301 and SUS304 are work-hardening type metastable austenitic stainless steels that can obtain high strength by cold working.
  • C (carbon) is an extremely effective element for strengthening the martensite phase, and has the effect of generating precipitates and increasing the spring limit value. Further, C, as an austenite forming element, reduces ⁇ ferrite formed at the time of solidification and in a high temperature region, and suppresses a decrease in hot workability. However, excessive addition of C increases the susceptibility to intergranular corrosion by causing chromium carbide to precipitate at the grain boundaries in the heat-affected zone and the hot-rolled coil after coiling. Make it easy to do. Therefore, the C content of the steel needs to be 0.12% by mass or less (more preferably 0.10% by mass or less).
  • N is an austenite-forming element like C.
  • N is an element effective for stabilizing the austenite structure, strengthening the metal structure, and improving the corrosion resistance of the steel.
  • N content is 0.10 mass% or more, but 0.12 mass% or more is preferable from a viewpoint of austenite reinforcement
  • N has a large solid solution strengthening ability, the addition of N exceeding 0.20% by mass brings about significant hardening of the steel. Therefore, the upper limit of the N content is 0.20% by mass, and the lower limit is 0.10% by mass.
  • P phosphorus
  • P is an element that causes deterioration of the corrosion resistance and hot workability of steel, so the upper limit of its content was set to 0.060 mass%. Note that this P may be regarded as an inevitable impurity.
  • this hot-rolled sheet was annealed at 1100 ° C. for 6 minutes, immersed in nitrohydrofluoric acid to remove the scale, and then cold-rolled to 1.0 mm with a four-high rolling mill, and further at 1100 ° C. for 2 minutes. It was annealed and dipped in nitric hydrofluoric acid to remove the scale, and a cold-rolled annealed pickled plate was obtained. Using the obtained cold-rolled annealed pickling plate as a raw material, cold-rolled tempered rolled plates with a rolling reduction of 30% and 50% were prepared and subjected to the following property evaluation tests.
  • Table 2 shows the evaluation results of the time cracking susceptibility, the presence or absence of the ferrite structure, and work hardening characteristics in each test piece.
  • Invention Steels 1 to 6 are all good in time cracking susceptibility, the presence or absence of ferrite structure, and work hardening characteristics.
  • the comparative steel 7 having an Md 30 Mn value larger than ⁇ 30 although the content of each element is within the range of the present invention, has a time crack after drawing. Is a point.
  • Md 30 Mn is presumed to be a very important parameter representing the properties of steel.
  • Each element is melted and mixed in a 70-ton electric furnace, and after a refining and continuous casting process, an austenitic stainless steel slab for a spring of the present invention is manufactured, and this is heated to a thickness of 3.0 mm with a four-stage rolling mill. Hot rolling was obtained by hot rolling.
  • test solution composition and test conditions used in the dip and dry test are shown in Table 4 and Table 5, respectively, and the obtained results are shown in FIG.
  • the stainless steel of the present invention is different from the conventional SUS301 in that the formation of work-induced martensite ( ⁇ ′ ) during cold working is suppressed, and as a result, It can be seen that the increase in magnetic permeability is suppressed, and the non-magnetic property (strictly weak magnetism) of the steel is secured.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)
PCT/JP2011/002835 2011-05-20 2011-05-20 ばね用オーステナイト系ステンレス鋼及びばね用ステンレス加工材 WO2012160594A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2011/002835 WO2012160594A1 (ja) 2011-05-20 2011-05-20 ばね用オーステナイト系ステンレス鋼及びばね用ステンレス加工材
TW101117391A TWI534276B (zh) 2011-05-20 2012-05-16 Spring with Wo Si Tin iron stainless steel and spring stainless steel processing materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2011/002835 WO2012160594A1 (ja) 2011-05-20 2011-05-20 ばね用オーステナイト系ステンレス鋼及びばね用ステンレス加工材

Publications (1)

Publication Number Publication Date
WO2012160594A1 true WO2012160594A1 (ja) 2012-11-29

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PCT/JP2011/002835 WO2012160594A1 (ja) 2011-05-20 2011-05-20 ばね用オーステナイト系ステンレス鋼及びばね用ステンレス加工材

Country Status (2)

Country Link
TW (1) TWI534276B (zh)
WO (1) WO2012160594A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104532161A (zh) * 2015-01-08 2015-04-22 辽宁省兴城市特种铸钢有限公司 一种磁选机端盖及其制备方法
WO2022101278A1 (en) 2020-11-13 2022-05-19 Acerinox Europa, S.A.U. Low ni content austenitic stainless steel with high strength / ductility properties

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04272158A (ja) * 1991-02-28 1992-09-28 Nippon Stainless Steel Co Ltd 加工硬化性の少ない非磁性ステンレス鋼
JP2002060838A (ja) * 2000-08-18 2002-02-28 Sanyo Special Steel Co Ltd 非磁性オーステナイト系ステンレス鋼の製造方法
JP2003342693A (ja) * 2002-05-22 2003-12-03 Nippon Steel Corp 高温超伝導材料の蒸着基板用オーステナイト系ステンレス鋼箔とその製造方法
JP2005290538A (ja) * 2004-03-08 2005-10-20 Nippon Steel & Sumikin Stainless Steel Corp 剛性率に優れた高強度ステンレス鋼線およびその製造方法
JP2006028542A (ja) * 2004-07-13 2006-02-02 Yamashin Steel Kk 非磁性オーステナイト系ステンレス鋼および非磁性ステンレス加工材
JP2011047008A (ja) * 2009-08-27 2011-03-10 Nippon Metal Ind Co Ltd ばね用オーステナイト系ステンレス鋼

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04272158A (ja) * 1991-02-28 1992-09-28 Nippon Stainless Steel Co Ltd 加工硬化性の少ない非磁性ステンレス鋼
JP2002060838A (ja) * 2000-08-18 2002-02-28 Sanyo Special Steel Co Ltd 非磁性オーステナイト系ステンレス鋼の製造方法
JP2003342693A (ja) * 2002-05-22 2003-12-03 Nippon Steel Corp 高温超伝導材料の蒸着基板用オーステナイト系ステンレス鋼箔とその製造方法
JP2005290538A (ja) * 2004-03-08 2005-10-20 Nippon Steel & Sumikin Stainless Steel Corp 剛性率に優れた高強度ステンレス鋼線およびその製造方法
JP2006028542A (ja) * 2004-07-13 2006-02-02 Yamashin Steel Kk 非磁性オーステナイト系ステンレス鋼および非磁性ステンレス加工材
JP2011047008A (ja) * 2009-08-27 2011-03-10 Nippon Metal Ind Co Ltd ばね用オーステナイト系ステンレス鋼

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104532161A (zh) * 2015-01-08 2015-04-22 辽宁省兴城市特种铸钢有限公司 一种磁选机端盖及其制备方法
WO2022101278A1 (en) 2020-11-13 2022-05-19 Acerinox Europa, S.A.U. Low ni content austenitic stainless steel with high strength / ductility properties

Also Published As

Publication number Publication date
TW201300551A (zh) 2013-01-01
TWI534276B (zh) 2016-05-21

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