WO2018103079A1 - Procédé de traitement thermique permettant d'augmenter la résistance d'un acier pour roulements - Google Patents

Procédé de traitement thermique permettant d'augmenter la résistance d'un acier pour roulements Download PDF

Info

Publication number
WO2018103079A1
WO2018103079A1 PCT/CN2016/109248 CN2016109248W WO2018103079A1 WO 2018103079 A1 WO2018103079 A1 WO 2018103079A1 CN 2016109248 W CN2016109248 W CN 2016109248W WO 2018103079 A1 WO2018103079 A1 WO 2018103079A1
Authority
WO
WIPO (PCT)
Prior art keywords
steel
temperature
furnace
cooled
heat treatment
Prior art date
Application number
PCT/CN2016/109248
Other languages
English (en)
Chinese (zh)
Inventor
张康
叶永
Original Assignee
机械科学研究总院青岛分院有限公司
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 机械科学研究总院青岛分院有限公司 filed Critical 机械科学研究总院青岛分院有限公司
Priority to PCT/CN2016/109248 priority Critical patent/WO2018103079A1/fr
Publication of WO2018103079A1 publication Critical patent/WO2018103079A1/fr

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18Hardening; Quenching with or without subsequent tempering
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • C21D1/28Normalising
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/56General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/58Oils
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/04Hardening by cooling below 0 degrees Celsius
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor

Definitions

  • the invention relates to the technical field of heat treatment of bearing steel, in particular to a heat treatment process for improving the toughness of a bearing steel.
  • Bearing steel is steel used to make balls, rollers and bearing rings. Bearing steels have high and uniform hardness and wear resistance, as well as high elastic limits. The uniformity of the chemical composition of the bearing steel, the content and distribution of non-metallic inclusions, and the distribution of carbides are all very strict, and it is one of the most demanding steel grades in all steel production.
  • bearing steel The physical properties of bearing steel are mainly based on inspection of microstructure, decarburization layer, non-metallic inclusions and low-fold structure. In general, it is delivered by hot rolling annealing and cold drawing annealing. The delivery status should be stated in the contract.
  • the low-magnification of steel must be free of shrinkage, subcutaneous bubbles, white spots and microscopic pores.
  • the center is loose, generally loose, no more than 1.5, and segregation must not exceed 2.
  • the annealed structure of the steel should be a uniformly distributed fine-grained pearlite. Decarburization depth, non-metallic inclusions and carbide non-uniformity shall comply with the relevant national standards.
  • the present invention proposes a heat treatment process for improving the toughness of a bearing steel.
  • the heat treatment process for improving the toughness of a bearing steel proposed by the invention comprises the following steps:
  • the oil is motor oil, spindle oil, transformer oil or diesel oil.
  • the steel material is kept at 940 ° C for 5 h, the temperature is cooled to 830 ° C at a rate of 35 ° C / h, and the temperature is kept for 1.5 h, and then the temperature is cooled to 650 ° C at a rate of 25 ° C / h, and the heat is maintained at 1.5. After h, the air is cooled.
  • the steel is kept at a temperature of 1050 ° C for 1.5 h, and then rapidly quenched into an oil of 150 ° C to cool, so that the carbide distribution is uniform, waiting for the steel The temperature was taken down to 165 ° C and then air cooled.
  • the bearing steel has a carbon content of 0.8 to 1.4%.
  • the bearing steel has a carbon content of 1.1%.
  • the steel material is first annealed and normalized, and the temperature and time are strictly required. Then, under the protection of nitrogen, the steel is kept warm, the carbide distribution is uniform, and the secondary freezing treatment is repeated.
  • the secondary tempering improves the toughness of the material, effectively alleviates the stress concentration at the crack tip, delays or terminates the crack propagation, and improves the fatigue life of the bearing steel.
  • the bearing steel prepared by the invention has higher purity and the number of inclusions. Less, the carbide is fine and dispersed, and the size is uniform, and the toughness is remarkably improved.
  • the heat treatment process for improving the toughness of a bearing steel proposed by the invention comprises the following steps:
  • the heat treatment process for improving the toughness of a bearing steel proposed by the invention comprises the following steps:
  • the heat treatment process for improving the toughness of a bearing steel proposed by the invention comprises the following steps:
  • the heat treatment process for improving the toughness of a bearing steel proposed by the invention comprises the following steps:
  • the heat treatment process for improving the toughness of a bearing steel proposed by the invention comprises the following steps:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Rolling Contact Bearings (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

L'invention concerne un procédé de traitement thermique permettant d'augmenter la résistance d'un acier pour roulements, comprenant les étapes suivantes : S1 recuisson : un matériau en acier est maintenu chaud à 880-1 000 °C pendant 4-6 h, puis la température est abaissée au rythme de 25-45 °C/h jusqu'à 800-860 °C et le matériau en acier est maintenu chaud pendant 1-2 h, puis la température est abaissée au rythme de 20-30 °C/h jusqu'à 600-700 °C et le matériau en acier est maintenu chaud pendant 1-2 h, avant d'être retiré du four pour être refroidi à l'air ; S2 normalisation : la température dans le four est augmentée jusqu'à 750-820 °C, le matériau en acier est placé à l'intérieur de celui-ci, maintenu chaud pendant 2-4 h et retiré du four pour être refroidi à l'air ; S3 trempe : sous une protection d'azote gazeux, le matériau en acier est maintenu chaud à une température de 1 000-1 100 °C pendant 1-2 h, puis trempé rapidement dans une huile à 100-220 °C pour être refroidi, avec pour résultat une répartition uniforme du carbure, puis le matériau en acier en est retiré lorsque sa température chute à 150-180 °C, pour être refroidi à l'air ; S4 traitement de congélation primaire : le matériau en acier du S3 est traité à froid à une température de -73 °C pendant 1-2 h ; et S5 tempérage primaire : le matériau en acier est placé dans un four de tempérage et, le four de tempérage étant chauffé à 150-170 °C, maintenu chaud pendant 1-3 h. L'acier pour roulements préparé par le procédé est d'une plus grande pureté et présente une quantité réduite d'impuretés, de fines et de carbures diffusés, une taille uniforme et une résistance significativement accrue.
PCT/CN2016/109248 2016-12-09 2016-12-09 Procédé de traitement thermique permettant d'augmenter la résistance d'un acier pour roulements WO2018103079A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/109248 WO2018103079A1 (fr) 2016-12-09 2016-12-09 Procédé de traitement thermique permettant d'augmenter la résistance d'un acier pour roulements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/109248 WO2018103079A1 (fr) 2016-12-09 2016-12-09 Procédé de traitement thermique permettant d'augmenter la résistance d'un acier pour roulements

Publications (1)

Publication Number Publication Date
WO2018103079A1 true WO2018103079A1 (fr) 2018-06-14

Family

ID=62490655

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/109248 WO2018103079A1 (fr) 2016-12-09 2016-12-09 Procédé de traitement thermique permettant d'augmenter la résistance d'un acier pour roulements

Country Status (1)

Country Link
WO (1) WO2018103079A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110055381A (zh) * 2019-04-29 2019-07-26 武钢集团昆明钢铁股份有限公司 一种轻量工模具钢的氮气保护退火工艺
CN111979392A (zh) * 2020-08-31 2020-11-24 昆山海子精密金属工业有限公司 模具钢材高效加工工艺
CN112195326A (zh) * 2020-09-27 2021-01-08 宁夏天地西北煤机有限公司 强化工模具钢性能的深冷工艺
CN112853078A (zh) * 2020-12-25 2021-05-28 中钢集团邢台机械轧辊有限公司 一种中铬材质轧辊回火加工工艺
CN114055086A (zh) * 2021-11-18 2022-02-18 辽宁忠旺集团有限公司 一种7CrSiMnMoV钢拉网刀片及其制造方法
CN114150114A (zh) * 2021-11-10 2022-03-08 广东世创金属科技股份有限公司 一种焊管模具钢的改进热处理方法
CN114622082A (zh) * 2022-03-21 2022-06-14 无锡亿宝机械设备有限公司 一种d2材质的全硬化1号中间辊的高效热处理方法
CN114774642A (zh) * 2022-04-25 2022-07-22 中航试金石检测科技(西安)有限公司 一种a-100钢热处理工艺
CN115125376A (zh) * 2022-07-06 2022-09-30 广西大藤峡水利枢纽开发有限责任公司 G102Cr18Mo不锈钢锻件的锻后热处理工艺及锻造工艺
CN115365767A (zh) * 2022-08-26 2022-11-22 山东天工岩土工程设备有限公司 一种粉末冶金压制模具加工工艺及粉末冶金压制模具

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0861907B1 (fr) * 1991-12-03 2001-08-16 Koyo Seiko Co., Ltd. Eléments de palier et leur procédé de fabrication
CN101947630A (zh) * 2010-09-17 2011-01-19 洛阳轴研科技股份有限公司 GCr15制作轴承套圈的控锻控冷加工工艺
CN104328250A (zh) * 2014-11-27 2015-02-04 王俐帧 一种轴承钢热处理工艺
CN106555040A (zh) * 2016-12-02 2017-04-05 机械科学研究总院青岛分院 一种提高轴承钢韧性的热处理工艺

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0861907B1 (fr) * 1991-12-03 2001-08-16 Koyo Seiko Co., Ltd. Eléments de palier et leur procédé de fabrication
CN101947630A (zh) * 2010-09-17 2011-01-19 洛阳轴研科技股份有限公司 GCr15制作轴承套圈的控锻控冷加工工艺
CN104328250A (zh) * 2014-11-27 2015-02-04 王俐帧 一种轴承钢热处理工艺
CN106555040A (zh) * 2016-12-02 2017-04-05 机械科学研究总院青岛分院 一种提高轴承钢韧性的热处理工艺

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110055381A (zh) * 2019-04-29 2019-07-26 武钢集团昆明钢铁股份有限公司 一种轻量工模具钢的氮气保护退火工艺
CN110055381B (zh) * 2019-04-29 2020-08-07 武钢集团昆明钢铁股份有限公司 一种轻量工模具钢的氮气保护退火工艺
CN111979392A (zh) * 2020-08-31 2020-11-24 昆山海子精密金属工业有限公司 模具钢材高效加工工艺
CN112195326A (zh) * 2020-09-27 2021-01-08 宁夏天地西北煤机有限公司 强化工模具钢性能的深冷工艺
CN112853078A (zh) * 2020-12-25 2021-05-28 中钢集团邢台机械轧辊有限公司 一种中铬材质轧辊回火加工工艺
CN114150114A (zh) * 2021-11-10 2022-03-08 广东世创金属科技股份有限公司 一种焊管模具钢的改进热处理方法
CN114150114B (zh) * 2021-11-10 2023-01-03 广东世创金属科技股份有限公司 一种焊管模具钢的改进热处理方法
CN114055086A (zh) * 2021-11-18 2022-02-18 辽宁忠旺集团有限公司 一种7CrSiMnMoV钢拉网刀片及其制造方法
CN114622082A (zh) * 2022-03-21 2022-06-14 无锡亿宝机械设备有限公司 一种d2材质的全硬化1号中间辊的高效热处理方法
CN114774642A (zh) * 2022-04-25 2022-07-22 中航试金石检测科技(西安)有限公司 一种a-100钢热处理工艺
CN114774642B (zh) * 2022-04-25 2023-11-24 中航试金石检测科技(西安)有限公司 一种a-100钢热处理工艺
CN115125376A (zh) * 2022-07-06 2022-09-30 广西大藤峡水利枢纽开发有限责任公司 G102Cr18Mo不锈钢锻件的锻后热处理工艺及锻造工艺
CN115125376B (zh) * 2022-07-06 2023-10-31 广西大藤峡水利枢纽开发有限责任公司 G102Cr18Mo不锈钢锻件的锻后热处理工艺及锻造工艺
CN115365767A (zh) * 2022-08-26 2022-11-22 山东天工岩土工程设备有限公司 一种粉末冶金压制模具加工工艺及粉末冶金压制模具

Similar Documents

Publication Publication Date Title
WO2018103079A1 (fr) Procédé de traitement thermique permettant d'augmenter la résistance d'un acier pour roulements
WO2018107316A1 (fr) Procédé de traitement thermique pour acier pour roulements à ultra-haute teneur en carbone
CN110863158B (zh) 一种高性能Mn-Cr系风电输出齿轮用钢及其生产方法
CN107267864B (zh) 一种高强度弹簧钢
US20230332261A1 (en) Method for manufacturing equal-hardness cr5 back up roll
WO2018103080A1 (fr) Procédé de traitement thermique d'acier à coussinets au chrome à haute teneur en carbone
CN104087742A (zh) 一种离心复合高铬钢轧辊的差温热处理方法
CN113416899B (zh) 一种Nb、B微合金化齿轮钢及其制备方法、热处理方法、渗碳处理方法和渗碳齿轮钢
CN103602797B (zh) 高硬度钢丝切丸热处理工艺
CN106967929A (zh) 一种动车组制动盘锻造用低碳钢及其热处理方法
CN103589839B (zh) 一种高碳高铬不锈钢的热处理工艺
CN105369015A (zh) 一种42CrMo轴类零件淬火热处理工艺
CN107794348A (zh) 一种提高Cr12MoV钢综合性能的热处理工艺
CN113046525A (zh) Cr12MoV钢的热处理工艺
CN110484858B (zh) 一种消除齿轮钢混晶的方法
CN106555131B (zh) 一种超高碳型轴承钢的热处理方法
CN110760653A (zh) 一种防止轴承钢脱碳的控制方法
CN106555132B (zh) 一种高碳铬轴承钢热处理工艺
CN112375891A (zh) 一种消除贝氏体钢轨拉伸断口脆性平台的在线回火工艺
CN108251757B (zh) 一种含镱的高性能轴承钢电渣锭及其一火成材工艺
CN105112634A (zh) 一种热作模具的热处理工艺
CN102876854A (zh) 1Cr12马氏体不锈钢压紧弹簧锻件的调质处理工艺方法
CN102021302B (zh) 一种高碳钢铁路车轮的热处理方法
CN105970113B (zh) 一种低自噪声不锈钢丝的制备方法
CN104404219A (zh) 一种弹簧热处理方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16923169

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16923169

Country of ref document: EP

Kind code of ref document: A1