KR930010203A - Heat treatment method of bearing - Google Patents

Heat treatment method of bearing Download PDF

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Publication number
KR930010203A
KR930010203A KR1019910021412A KR910021412A KR930010203A KR 930010203 A KR930010203 A KR 930010203A KR 1019910021412 A KR1019910021412 A KR 1019910021412A KR 910021412 A KR910021412 A KR 910021412A KR 930010203 A KR930010203 A KR 930010203A
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KR
South Korea
Prior art keywords
bearing
temperature
heat treatment
bearings
treatment method
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KR1019910021412A
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Korean (ko)
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KR940001140B1 (en
Inventor
박현수
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박용식
한국종합기계 주식회사
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Priority to KR1019910021412A priority Critical patent/KR940001140B1/en
Publication of KR930010203A publication Critical patent/KR930010203A/en
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Publication of KR940001140B1 publication Critical patent/KR940001140B1/en

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    • 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

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  • 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)
  • Rolling Contact Bearings (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

본 발명은 베어링의 열처리방법에 관한 것으로, 소정조성의 베어링강으로 제조된 베어링을 800∼900℃ 온도로 2∼3시간동안 가열하면서 연화저항원소를 함유하는 기제를 주입하여 베어링표면층에 연화저항원소를 침투시키는 원소확산처리단계, 연화저항원소가 침투된 베어링을 40∼120℃온도의 오일에 투입하는 담금질단계, 담금질된 베어링을 상온으로 유지시킨후 0℃이하온도로 처리하는 심냉처리단계 및, 심냉처리된 베어링을 180℃ 이상의 온도에서 유지시키는 고온뜨임단계로 구성되어, 베어링의 미변태 잔류오오스테나이트 량을 최소화함으로서 베어링의 사용도중의 변태량을 극소화하여 베어링의 칫수안정성을 높이고 경도저하를 방지하여 성능 및 수명이 향상된 베어링을 제조할 수 있도록 되어있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat treatment method of a bearing, wherein a bearing containing a softening resistance element is injected into a bearing surface layer by injecting a base containing a softening resistance element while heating a bearing made of a predetermined composition bearing steel at 800 to 900 ° C. for 2 to 3 hours. An element diffusion treatment step of penetrating the quenching step, a quenching step of putting the bearing penetrated into the oil at a temperature of 40 to 120 ° C., a deep cooling step of treating the quenched bearing at a temperature of 0 ° C. and below, and Consists of a high temperature tempering step that maintains deep-cooled bearings at temperatures above 180 ° C, minimizing the amount of unaffected residual austenite in the bearings, minimizing the amount of deformation during use of the bearings, increasing the dimensional stability of the bearings and reducing hardness. It is possible to manufacture bearings with improved performance and lifespan.

Description

베어링의 열처리방법Heat treatment method of bearing

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명 열처리 방법을 설명하는 그래프이고, 제2도 내지 제5도는 각각 본 발명 열처리방법과 종래기술에 따른 열처리방법을 실시한 베어링을 250℃온도로 유지시킨 상태에서의 측정값변화를 비교도시한 그래프로서, 제2도는 베어링외륜의 외경칫수 변화 그래프, 제3도는 베어링외륜의 궤도 치수 변화 그래프, 제4도는 베어링외륜의 전원도 변화 그래프, 제5도는 베어링의 경도변화 그래프이다.1 is a graph illustrating the heat treatment method of the present invention, and FIGS. 2 to 5 compare the measured value changes in a state in which a bearing subjected to the heat treatment method according to the present invention and the prior art is maintained at a temperature of 250 ° C., respectively. 2 is a graph of the outer diameter dimension change of the bearing outer ring, FIG. 3 is a graph of the change in the track size of the bearing outer ring, FIG. 4 is a graph of the change in the power supply of the bearing outer ring, and FIG. 5 is a graph of the hardness change of the bearing.

Claims (6)

소정조성의 베어링강으로 제조된 베어링을 소정온도로 가열하면서 연화저항원소를 함유하는 기체를 주입하여 베어링표면층에 연화저항원소를 침투시키는 원소확산처리단계와, 연화정항원소가 침투된 베어링을 40∼120℃ 온도의 오일에 투입하는 담금질단계, 담금질된 베어링을 상온에서 유지시킨후 0℃ 이하온도로 처리하는 심냉처리단계 및, 심냉처리된 베어링을 200℃ 이상의 온도에서 유지시키는 고온뜨임단계로 구성된 베어링의 열처리방법.An element diffusion treatment step of injecting a softening resistance element into the bearing surface layer by injecting a gas containing a softening resistance element while heating a bearing made of a predetermined composition bearing steel to a predetermined temperature; It consists of a quenching step into the oil at a temperature of ~ 120 ℃, a deep cold treatment step of maintaining the quenched bearing at room temperature and processing below 0 ℃, and a high temperature tempering step of maintaining the deep-cooled bearing at a temperature above 200 ℃ Heat treatment method of bearing. 제1항에 있어서, 상기 연화저항원소를 함유하는 기체가 암모니아개스로 이루어진 것을 특징으로 하는 베어링의 열처리방법.The bearing heat treatment method according to claim 1, wherein the gas containing the softening resistance element is made of ammonia gas. 제1항에 있어서, 상기 원소확산처리단계에서 베어링을 800∼900℃ 온도로 가열하여 2∼3시간동안 유지시키는 것을 특징으로 하는 베어링의 열처리방법.The heat treatment method of a bearing according to claim 1, wherein in the element diffusion treatment step, the bearing is heated to a temperature of 800 to 900 占 폚 and maintained for 2 to 3 hours. 제1항에 있어서, 상기 심냉처리단계가 담금질된 베어링을 -80℃정도 온도에서 유지시키는 것을 특징으로 하는 베어링의 열처리방법.The method of claim 1, wherein the deep cooling treatment step is to maintain the quenched bearing at a temperature of about -80 ℃. 제1항에 있어서, 상기 원소확산처리단계 또는 심냉처리단계중 어느 하나의 단계를 생략한 것을 특징으로 하는 베어링의 열처리방법.The bearing heat treatment method according to claim 1, wherein any one of the element diffusion treatment step and the deep cooling treatment step is omitted. 제1항에 있어서, 상기 고온뜨임단계가 심냉처리된 베어링을 200∼350℃온도에서 1∼2시간 유지시키는 것을 특징으로 하는 베어링의 열처리 방법.The bearing heat treatment method according to claim 1, wherein the high temperature tempering step maintains the deeply cooled bearing at a temperature of 200 to 350 ° C. for 1 to 2 hours. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910021412A 1991-11-27 1991-11-27 Heat treatment method of bearing KR940001140B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910021412A KR940001140B1 (en) 1991-11-27 1991-11-27 Heat treatment method of bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910021412A KR940001140B1 (en) 1991-11-27 1991-11-27 Heat treatment method of bearing

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KR930010203A true KR930010203A (en) 1993-06-22
KR940001140B1 KR940001140B1 (en) 1994-02-14

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100688319B1 (en) * 1999-12-23 2007-02-28 뵈스트-알핀 인두스트리안라겐바우 게엠베하 앤드 컴퍼니 Method for producing pig iron

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103484613B (en) * 2013-09-26 2015-07-22 无锡阳工机械制造有限公司 Quenching method for steel NO. 50

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100688319B1 (en) * 1999-12-23 2007-02-28 뵈스트-알핀 인두스트리안라겐바우 게엠베하 앤드 컴퍼니 Method for producing pig iron

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