KR910012291A - 탄소공구강의 제조방법 - Google Patents
탄소공구강의 제조방법 Download PDFInfo
- Publication number
- KR910012291A KR910012291A KR1019890020174A KR890020174A KR910012291A KR 910012291 A KR910012291 A KR 910012291A KR 1019890020174 A KR1019890020174 A KR 1019890020174A KR 890020174 A KR890020174 A KR 890020174A KR 910012291 A KR910012291 A KR 910012291A
- Authority
- KR
- South Korea
- Prior art keywords
- carbon steel
- manufacturing carbon
- less
- steel ball
- reduction rate
- Prior art date
Links
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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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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)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (1)
- 중량%로, C : 0.89-0.93%, Si : 0.14-0.17%, Mn : 0.27-0.43%, P : 0.01% 이하, S : 0.012%이하 및 나머지 Fe로 조성되는 통상의 탄소공구강을 1000℃-1150℃로 가열하고 누적압하율 60%로 마무리 압연한후 80%이상의 압하율로 냉간압연을 실시하고 650℃-750℃에서 5-10분간 구상화 열처리하는 것을 특징으로 하는 탄소공구강의 제조방법.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019890020174A KR920004943B1 (ko) | 1989-12-29 | 1989-12-29 | 탄소 공구강의 제조방법 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019890020174A KR920004943B1 (ko) | 1989-12-29 | 1989-12-29 | 탄소 공구강의 제조방법 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR910012291A true KR910012291A (ko) | 1991-08-07 |
| KR920004943B1 KR920004943B1 (ko) | 1992-06-22 |
Family
ID=19294210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019890020174A KR920004943B1 (ko) | 1989-12-29 | 1989-12-29 | 탄소 공구강의 제조방법 |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR920004943B1 (ko) |
-
1989
- 1989-12-29 KR KR1019890020174A patent/KR920004943B1/ko not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR920004943B1 (ko) | 1992-06-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| G160 | Decision to publish patent application | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 19970610 Year of fee payment: 6 |
|
| LAPS | Lapse due to unpaid annual fee |