CN101542007A - Steel, and processing method for the production of higher-strength fracture-splittable machine components - Google Patents

Steel, and processing method for the production of higher-strength fracture-splittable machine components Download PDF

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Publication number
CN101542007A
CN101542007A CNA2007800319547A CN200780031954A CN101542007A CN 101542007 A CN101542007 A CN 101542007A CN A2007800319547 A CNA2007800319547 A CN A2007800319547A CN 200780031954 A CN200780031954 A CN 200780031954A CN 101542007 A CN101542007 A CN 101542007A
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CN
China
Prior art keywords
steel
parts
chemical constitution
brittle failure
controlled cooling
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CNA2007800319547A
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Chinese (zh)
Inventor
R·迪得里希斯
A·施蒂贝尔
R·朗格
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Georgsmarienhuette GmbH
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Georgsmarienhuette GmbH
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Publication date
Application filed by Georgsmarienhuette GmbH filed Critical Georgsmarienhuette GmbH
Publication of CN101542007A publication Critical patent/CN101542007A/en
Pending legal-status Critical Current

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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
    • 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
    • C22C38/04—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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
    • C22C38/40—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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Processing Of Solid Wastes (AREA)
  • Forging (AREA)

Abstract

The invention relates to a steel and a processing method for higher-strength fracture-splittable machine components that are composed of at least two fracture-splittable parts. Said steel and method are characterized in that the chemical composition of the steel (expressed in percent by weight) is as follows: C is between 0.40% and 0.60%; Si is between 0.20% and 1.00%; Mn is between 0.540% and 1.50%; Cr is between 0% and 1.00%; Ni is between 0% and 0.50%; Mo is between 0% and 0.20%; Nb is between 0% and 0.050%; V is between 0% and 0.30%; Al is between 0% and 0.05%; N is between 0.005% and 0.020%; the rest is composed of iron and smelting-related impurities and residual matter.

Description

Be used to make the steel and the working method of high strength brittle failure machine part
Technical field
The present invention relates to a kind of steel and working method that is used to make more high-intensity brittle failure machine part.Develop this material and for example be used for making the fracture connecting rod.
Background technology
This steel must be suitable for forging or other thermal distortions.Mainly be that pearlitic tissue must be regulated by having controlled refrigerative forging heat, it has the 750N/mm of being higher than 2Yield strength, 1000 to 1200N/mm 2Tensile strength, be higher than 10% elongation at break and be higher than 25% relative reduction in area.The brittle failure ability is a particularly important.
Desired characteristic can be separated out alloy carbide (niobium carbide and vanadium carbide) and manganese sulfide and regulate pearlitic structure pointedly by chemical constitution correspondingly to be regulated, make preformed material and during at the finish forge parts during the thermal distortion pointedly controlled temperature (mechanical thermal treatment) and implementing to forge or thermal distortion after specific thermal treatment and realizing.
At present for these application purposes, for example use average carbon content, about 1% Mn, 0.06 to 0.07% the S of the C of C, 0.5 to 0.9% Mn, 0.06 to 0.07% the S of consisting of of almost eutectoid about 0.7% and optional 0.1 to 0.2% V (C70S6,70MnVS4) or about 0.4% and the steel of about 0.3% V (36MnVS4) according to user's technical specifications.
It mainly is pearlitic tissue that these steel have what comprise vanadium carbide and manganese sulfide, and observes the preset value of mechanical characteristics aspect.The shortcoming that known material changes scheme is that present material changes the resource consumption height of scheme for alloying agents expensive and in short supply.Particularly vanadium is applied to ferrite pearlific steel (AFP steel) field of precipitation-hardening more and more at present, thereby makes vanadium become material more and more in short supply.
Summary of the invention
The objective of the invention is to, avoid described shortcoming by advising a kind of novel steel, this steel has desired mechanical characteristics aspect the intensity (and fatigue strength), but and in stretching experiment that good toughness properties is unified mutually with simultaneously good breaking property (Crackbarkeit) extraly.This steel should have good continuous casting and forging property simultaneously.In addition, with by adopt corresponding suitably distortion and method of cooling with niobium partly the known steel of alternative vanadium compare, this novel steel mode of resources conseravtion is more made.
Except basic chemical constitution, the carbide of the fine distribution as far as possible by separating out alloy carbide component niobium and vanadium reaches high yield strength numerical value.Carbide that for this reason need dissolving exists before final hot deformation step and at thermal distortion and cooling period subsequently attemperation in a controlled manner.Separating out particularly of fine distribution realizes by the cooling of quickening slightly subsequently under low final texturing temperature.Particularly improve yield strength thus, and therefore obviously improved the yield strength ratio.
The basic numerical value that tensile strength can provide from the essentially consist of the V by 0.5% C, 0.6% Si, 1.0% Mn, 0.23% Cr, 0.2% Ni and 0.14% is regulated in desired scope equally by the cooling of quickening slightly after thermal distortion.
The toughness characteristics value is particularly carried out alloying and is limited by adding 0.06 to 0.07% sulphur pointedly.On this meaning, carbon content has positively effect equally with relative higher nitrogen content.
But importantly, there is not macroscopic deformation in crystalline fracture for the good breaking property of this material.This is by the alloying scheme with high carbon, nitrogen and sulphur content and fewer chromium, nickel and molybdenum content and predetermined.
Embodiment
According to this embodiment, the present invention relates to be used for make the steel of the brittle failure parts of automotive industry, it has following chemical constitution by weight percentage:
0.4％≤C≤0.6％；0.2％≤Si≤1.0％；0.5％≤Mn≤1.5％；
0％≤Cr≤1.0％；0％≤Ni≤0.5％；0％≤Mo≤0.2％；
0％≤Nb≤0.05％；0％≤V≤0.3％；0％≤Al≤0.05％；
0.005％≤N≤0.020％，
Wherein, all the other compositions are made up of the impurity that iron and smelting cause.
The shortcoming of old scheme?
Because 0.29% V (under the situation of 36MnVS4) and partly high alloying fringe cost (Legierungskostenzuschlag (LZ))
Almost there is not possibility according to steel quality of the present invention
The advantage of new departure?
Lower alloying cost (only 0.14% V)
User and unique haveing nothing to do according to steel quality of the present invention.

Claims (15)

1, be used for the steel and the working method of more high-intensity brittle failure machine part, it is characterized in that, this machine part comprises at least two brittle failure parts, and the chemical constitution of these brittle failure parts has following content by weight percentage:
0.40％?≤C?≤0.60％
0.20％?≤Si≤1.00％
0.50％?≤Mn≤1.50％
0％ ≤Cr≤1.00％
0％ ≤Ni≤0.50％
0％ ≤Mo≤0.20％
0％ ≤Nb≤0.050％
0％ ≤V?≤0.30％
0％ ≤Al≤0.05％
0.005％≤N?≤0.020％
Wherein, all the other compositions are made up of impurity and all the other materials that iron and smelting cause.
2, steel according to claim 1 is characterized in that in its chemical constitution:
0.10％≤V≤0.20％。
3, steel according to claim 1 and 2 is characterized in that in its chemical constitution:
0.020％≤Nb≤0.030％。
4,, it is characterized in that in its chemical constitution according to the described steel of one of claim 1 to 3:
0.010％≤N≤0.020％。
5,, it is characterized in that in its chemical constitution according to the described steel of one of claim 1 to 4:
0.45％?≤C?≤0.55％
0.50％?≤Si≤0.70％
0.90％?≤Mn≤1.10％
0.10％?≤Cr≤0.40％
0.10％?≤Ni≤0.30％
0.10％?≤V?≤0.20％
0.010％≤Al≤0.020％
0.020％≤Nb≤0.030％
0.010％≤N?≤0.020％。
6,, it is characterized in that in its chemical constitution according to the described steel of one of claim 1 to 4:
0.45％?≤C?≤0.55％
0.50％?≤Si≤0.70％
0.90％?≤Mn≤1.10％
0.10％?≤Cr≤0.40％
0.10％?≤Ni≤0.30％
0.10％?≤V?≤0.20％
0.010％≤Al≤0.020％
0.020％≤Nb≤0.030％
0.010％≤N?≤0.020％
0.020％≤Ti≤0.030％。
7,, it is characterized in that in its chemical constitution according to the described steel of one of claim 1 to 4:
0.45％≤C?≤0.55％
0.50％≤Si≤0.70％
0.90％≤Mn≤1.10％
0.30％≤Cr≤0.40％
0％ ≤Ni≤0.20％
0.10％?≤V?≤0.20％
0.010％≤Al≤0.020％
0.020％≤Nb≤0.030％
0.015％≤N?≤0.020％。
8, be used for making the purposes of the brittle failure parts of automobile industry according to the described steel of one of claim 1 to 7, these parts forge and controlled cooling after to have what comprise the alloy carbide precipitate mainly be pearlitic structure.
9, parts according to claim 8 is characterized in that, the yield strength after the controlled cooling of distortion heat is higher than 750N/mm 2
10, parts according to claim 9 is characterized in that, the tensile strength after the controlled cooling of distortion heat is higher than 950N/mm 2And be lower than 1200N/mm 2
11, parts according to claim 10 is characterized in that, the elongation at break after the controlled cooling of distortion heat is higher than 10%.
12, parts according to claim 11 is characterized in that, the relative reduction in area after the controlled cooling of distortion heat is higher than 25%.
13, parts according to claim 12 is characterized in that brittle failure.
14, parts according to claim 13 is characterized in that it is applicable to induction quenching.
15, parts according to claim 14 is characterized in that, the mechanical property of forging in preformed material and the parts all can be regulated by mechanical thermal treatment.
CNA2007800319547A 2006-09-01 2007-07-27 Steel, and processing method for the production of higher-strength fracture-splittable machine components Pending CN101542007A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006041146.3 2006-09-01
DE102006041146A DE102006041146A1 (en) 2006-09-01 2006-09-01 Steel and processing methods for the manufacture of high-strength fracture-breakable machine components

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US (1) US20100186855A1 (en)
EP (1) EP2057298B1 (en)
JP (1) JP2010501733A (en)
KR (1) KR20090049591A (en)
CN (1) CN101542007A (en)
AR (1) AR062184A1 (en)
AU (1) AU2007294317B2 (en)
BR (1) BRPI0716206A2 (en)
CA (1) CA2666677A1 (en)
DE (1) DE102006041146A1 (en)
MX (1) MX2009001971A (en)
RU (1) RU2441093C2 (en)
TW (1) TW200825188A (en)
WO (1) WO2008028447A1 (en)
ZA (1) ZA200900848B (en)

Cited By (10)

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Publication number Priority date Publication date Assignee Title
CN105543651A (en) * 2015-12-21 2016-05-04 武钢集团昆明钢铁股份有限公司 Forging molten steel used for producing spindle and hinged shaft of hydropower station generator and smelting process for forging molten steel
CN107619995A (en) * 2017-08-11 2018-01-23 江阴兴澄特种钢铁有限公司 A kind of major diameter engineering mechanical hydraulic oil cylinder piston rod round steel and its manufacture method
CN108486472A (en) * 2018-05-11 2018-09-04 攀钢集团攀枝花钢铁研究院有限公司 Containing V, Ti, N Micro Alloying pre-hardened plastic mold steel and preparation method thereof
CN108504935A (en) * 2018-05-11 2018-09-07 攀钢集团攀枝花钢铁研究院有限公司 Containing V, N Micro Alloying pre-hardened plastic mold steel and preparation method thereof
CN108504934A (en) * 2018-05-11 2018-09-07 攀钢集团攀枝花钢铁研究院有限公司 Containing V, Nb, N Micro Alloying pre-hardened plastic mold steel and preparation method thereof
CN108546879A (en) * 2018-05-11 2018-09-18 攀钢集团攀枝花钢铁研究院有限公司 Containing V, Nb Micro Alloying pre-hardened plastic mold steel and preparation method thereof
CN108624815A (en) * 2018-05-11 2018-10-09 攀钢集团攀枝花钢铁研究院有限公司 Containing V, Nb, Ti Micro Alloying pre-hardened plastic mold steel and preparation method thereof
CN110284055A (en) * 2019-06-17 2019-09-27 威海津恒科技有限公司 A kind of wear resistant automobile stamping part die and preparation method thereof
CN111235487A (en) * 2020-03-23 2020-06-05 马鞍山钢铁股份有限公司 Steel for long-life drill rod and production method thereof
CN114058943A (en) * 2021-09-14 2022-02-18 武汉钢铁有限公司 Microalloyed steel and manufacturing method thereof

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ES2860953T3 (en) * 2014-07-08 2021-10-05 Sidenor Investig Y Desarrollo S A Micro-alloyed steel for hot forming of high strength and high elastic limit parts
EP3453777A1 (en) 2017-09-08 2019-03-13 Cemtas Celk Makina Sanayi Ve Ticaret Anonim Sirketi High strength and fracture splittable micro alloyed steel
EP4061976A1 (en) 2019-11-18 2022-09-28 ArcelorMittal Forged part of steel and a method of manufacturing thereof
TR201921217A2 (en) 2019-12-24 2021-07-26 Tirsan Kardan Sanayi Ve Ticaret Anonim Sirketi High strength, low alloy steel composition

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105543651A (en) * 2015-12-21 2016-05-04 武钢集团昆明钢铁股份有限公司 Forging molten steel used for producing spindle and hinged shaft of hydropower station generator and smelting process for forging molten steel
CN107619995A (en) * 2017-08-11 2018-01-23 江阴兴澄特种钢铁有限公司 A kind of major diameter engineering mechanical hydraulic oil cylinder piston rod round steel and its manufacture method
CN108486472A (en) * 2018-05-11 2018-09-04 攀钢集团攀枝花钢铁研究院有限公司 Containing V, Ti, N Micro Alloying pre-hardened plastic mold steel and preparation method thereof
CN108504935A (en) * 2018-05-11 2018-09-07 攀钢集团攀枝花钢铁研究院有限公司 Containing V, N Micro Alloying pre-hardened plastic mold steel and preparation method thereof
CN108504934A (en) * 2018-05-11 2018-09-07 攀钢集团攀枝花钢铁研究院有限公司 Containing V, Nb, N Micro Alloying pre-hardened plastic mold steel and preparation method thereof
CN108546879A (en) * 2018-05-11 2018-09-18 攀钢集团攀枝花钢铁研究院有限公司 Containing V, Nb Micro Alloying pre-hardened plastic mold steel and preparation method thereof
CN108624815A (en) * 2018-05-11 2018-10-09 攀钢集团攀枝花钢铁研究院有限公司 Containing V, Nb, Ti Micro Alloying pre-hardened plastic mold steel and preparation method thereof
CN110284055A (en) * 2019-06-17 2019-09-27 威海津恒科技有限公司 A kind of wear resistant automobile stamping part die and preparation method thereof
CN111235487A (en) * 2020-03-23 2020-06-05 马鞍山钢铁股份有限公司 Steel for long-life drill rod and production method thereof
CN111235487B (en) * 2020-03-23 2021-08-31 马鞍山钢铁股份有限公司 Steel for long-life drill rod and production method thereof
CN114058943A (en) * 2021-09-14 2022-02-18 武汉钢铁有限公司 Microalloyed steel and manufacturing method thereof

Also Published As

Publication number Publication date
ZA200900848B (en) 2009-12-30
WO2008028447A1 (en) 2008-03-13
EP2057298B1 (en) 2012-11-14
AU2007294317B2 (en) 2011-10-13
US20100186855A1 (en) 2010-07-29
EP2057298A1 (en) 2009-05-13
CA2666677A1 (en) 2008-03-13
MX2009001971A (en) 2009-03-09
TW200825188A (en) 2008-06-16
RU2009111860A (en) 2010-10-10
AR062184A1 (en) 2008-10-22
DE102006041146A1 (en) 2008-03-06
JP2010501733A (en) 2010-01-21
RU2441093C2 (en) 2012-01-27
AU2007294317A1 (en) 2008-03-13
KR20090049591A (en) 2009-05-18
BRPI0716206A2 (en) 2013-11-12

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Application publication date: 20090923