KR100323468B1 - 높은 피로 저항성을 갖는 엔진 밸브 스프링을 제작할 수 있는 방법 - Google Patents
높은 피로 저항성을 갖는 엔진 밸브 스프링을 제작할 수 있는 방법 Download PDFInfo
- Publication number
- KR100323468B1 KR100323468B1 KR1019990037071A KR19990037071A KR100323468B1 KR 100323468 B1 KR100323468 B1 KR 100323468B1 KR 1019990037071 A KR1019990037071 A KR 1019990037071A KR 19990037071 A KR19990037071 A KR 19990037071A KR 100323468 B1 KR100323468 B1 KR 100323468B1
- Authority
- KR
- South Korea
- Prior art keywords
- valve spring
- engine valve
- fatigue resistance
- minutes
- stress
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000005480 shot peening Methods 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 150000003839 salts Chemical class 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005496 tempering Methods 0.000 abstract description 16
- 230000000171 quenching effect Effects 0.000 abstract description 5
- 238000010791 quenching Methods 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 description 9
- 238000009661 fatigue test Methods 0.000 description 8
- 238000000137 annealing Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
-
- 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
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/607—Molten salts
-
- 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
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
Abstract
Description
구분 | 뜨임 | 피로수명(평균 사이클수) | 내구배율 |
기존의 오일템퍼선을사용한것. | 420℃×35분(응력제거 소둔) | 7.4×106절손 | 1 |
제조 공정을변화시킨것 | 350℃× 30분 | 20×106절손 | 2.7 |
400℃× 30분 | 56×106절손 | 7.6 | |
450℃× 30분 | 51×106절손 | 6.9 |
Claims (1)
- 엔진 밸브 스프링을 제조하는 방법에 있어서;신선한 원소재를 열처리하지 않은 상태에서 코일링하는 단계;상기 코일링된 소재를 850℃에서 10분동안 가열한 후 320℃의 염욕에서 90초동안 냉각한 다음 공냉시켜 코일링한 소재의 변형을 방지하는 단계;상기 염욕에서 90초동안 냉각된 후 공냉시킨 소재를 400℃∼450℃에서 30분 뜨임을 하고, 쇼트 피닝하는 단계를 통해, 표면으로부터 0.2mm 깊이 이상에서도 열처리시의 압축 잔류응력층이 그대로 남아있게 하여 밸브 스프링의 피로 저항성을 향상시킨 것을 특징으로 하는 높은 피로 저항성을 갖는 엔진 밸브 스프링을 제작할 수 있는 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990037071A KR100323468B1 (ko) | 1999-09-02 | 1999-09-02 | 높은 피로 저항성을 갖는 엔진 밸브 스프링을 제작할 수 있는 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019990037071A KR100323468B1 (ko) | 1999-09-02 | 1999-09-02 | 높은 피로 저항성을 갖는 엔진 밸브 스프링을 제작할 수 있는 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20010025964A KR20010025964A (ko) | 2001-04-06 |
KR100323468B1 true KR100323468B1 (ko) | 2002-02-06 |
Family
ID=19609791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019990037071A KR100323468B1 (ko) | 1999-09-02 | 1999-09-02 | 높은 피로 저항성을 갖는 엔진 밸브 스프링을 제작할 수 있는 방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100323468B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8470104B2 (en) | 2010-10-19 | 2013-06-25 | Hyundai Motor Company | High strength valve spring for vehicle engine and method of manufacturing the same |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102094920A (zh) * | 2010-12-15 | 2011-06-15 | 福州长榕弹簧有限公司 | 鞋用扭转式弹簧及其成型工艺 |
KR101295118B1 (ko) * | 2011-05-31 | 2013-08-09 | 대원강업주식회사 | 열처리 공법을 이용한 엔진 밸브 스프링의 제작방법 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01191745A (ja) * | 1988-01-26 | 1989-08-01 | Nippon Steel Corp | 高周波加熱による高疲労強度コイルばねの製造方法 |
JPH04247824A (ja) * | 1991-01-25 | 1992-09-03 | Nippon Steel Corp | 高強度ばねの製造方法 |
JPH05331535A (ja) * | 1992-05-28 | 1993-12-14 | Chuo Spring Co Ltd | 弁ばねの後処理方法 |
US5665179A (en) * | 1994-07-28 | 1997-09-09 | Togo Seisakusho Corp. | Process for producing a coil spring |
-
1999
- 1999-09-02 KR KR1019990037071A patent/KR100323468B1/ko not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01191745A (ja) * | 1988-01-26 | 1989-08-01 | Nippon Steel Corp | 高周波加熱による高疲労強度コイルばねの製造方法 |
JPH04247824A (ja) * | 1991-01-25 | 1992-09-03 | Nippon Steel Corp | 高強度ばねの製造方法 |
JPH05331535A (ja) * | 1992-05-28 | 1993-12-14 | Chuo Spring Co Ltd | 弁ばねの後処理方法 |
US5665179A (en) * | 1994-07-28 | 1997-09-09 | Togo Seisakusho Corp. | Process for producing a coil spring |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8470104B2 (en) | 2010-10-19 | 2013-06-25 | Hyundai Motor Company | High strength valve spring for vehicle engine and method of manufacturing the same |
Also Published As
Publication number | Publication date |
---|---|
KR20010025964A (ko) | 2001-04-06 |
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