JPS5789420A - Surface hardening and leveling process - Google Patents
Surface hardening and leveling processInfo
- Publication number
- JPS5789420A JPS5789420A JP16614180A JP16614180A JPS5789420A JP S5789420 A JPS5789420 A JP S5789420A JP 16614180 A JP16614180 A JP 16614180A JP 16614180 A JP16614180 A JP 16614180A JP S5789420 A JPS5789420 A JP S5789420A
- Authority
- JP
- Japan
- Prior art keywords
- approx
- deformation
- condition
- under
- long steel
- 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
Links
Abstract
PURPOSE: To minimize the deformation of a long steel material due to heat treatment by a method in which heating treatment is made on a long steel material kept under a condition that deformation is brought about in a direction opposite to the direction of deformation to be taken place when the material is subjected to a surface hardening treatment under nonrestraint condition.
CONSTITUTION: When a long steel material 1, e.g., rail, etc., is sent in longitudinal direction, moved at a moving rate of approx. 6mm/sec under nonrestraint condition by a heating coil 2 and a cooler 3, and then hardened for its hardening section 1a, a deformation of approx. 2.23mm/m length is brought about. Thus, the material 1 is received on two turnable support rollers 4 provided at an interval of approx. 300mm, and its central upside is flexed by a press roller 5 in such a way as to flex it approx. 0.7mm at the center of the support rollers 4. Under the condition, the material 1 is sent to the right at a moving rate of approx 6mm/ sec for heat treatment by a heating coil 2 and a cooler 3. Thus, the deformation rate of the material 1 becomes approx. 0.3mm/m.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16614180A JPS5789420A (en) | 1980-11-26 | 1980-11-26 | Surface hardening and leveling process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16614180A JPS5789420A (en) | 1980-11-26 | 1980-11-26 | Surface hardening and leveling process |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5789420A true JPS5789420A (en) | 1982-06-03 |
Family
ID=15825796
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16614180A Pending JPS5789420A (en) | 1980-11-26 | 1980-11-26 | Surface hardening and leveling process |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5789420A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58204125A (en) * | 1982-05-24 | 1983-11-28 | Toyota Central Res & Dev Lab Inc | Partial heat treatment of metallic material |
JPS61104018A (en) * | 1984-10-23 | 1986-05-22 | Fuji Denshi Kogyo Kk | High-frequency hardening method |
JPH02194125A (en) * | 1989-01-20 | 1990-07-31 | Mitsubishi Motors Corp | Method for preventing deformation of crank shaft |
JP2000178639A (en) * | 1998-12-10 | 2000-06-27 | Fuji Denshi Kogyo Kk | Induction hardening apparatus of long work and induction hardening method |
KR100421721B1 (en) * | 2000-12-27 | 2004-03-19 | 오종한 | apparatus for high frequency-heating a linear motion guide rail |
WO2007060905A1 (en) * | 2005-11-24 | 2007-05-31 | Kikuchi Co., Ltd. | Quenching equipment and quenching system |
CN102864286A (en) * | 2011-07-05 | 2013-01-09 | 上海热处理厂有限公司 | Guide rail micro-deformation quenching method |
CN108284185A (en) * | 2018-01-15 | 2018-07-17 | 武汉理工大学 | A kind of improved method of driven roller for rail traffic bearer ring hot rolling forming |
-
1980
- 1980-11-26 JP JP16614180A patent/JPS5789420A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58204125A (en) * | 1982-05-24 | 1983-11-28 | Toyota Central Res & Dev Lab Inc | Partial heat treatment of metallic material |
JPH0249370B2 (en) * | 1982-05-24 | 1990-10-30 | Toyoda Chuo Kenkyusho Kk | |
JPS61104018A (en) * | 1984-10-23 | 1986-05-22 | Fuji Denshi Kogyo Kk | High-frequency hardening method |
JPH02194125A (en) * | 1989-01-20 | 1990-07-31 | Mitsubishi Motors Corp | Method for preventing deformation of crank shaft |
JP2000178639A (en) * | 1998-12-10 | 2000-06-27 | Fuji Denshi Kogyo Kk | Induction hardening apparatus of long work and induction hardening method |
KR100421721B1 (en) * | 2000-12-27 | 2004-03-19 | 오종한 | apparatus for high frequency-heating a linear motion guide rail |
WO2007060905A1 (en) * | 2005-11-24 | 2007-05-31 | Kikuchi Co., Ltd. | Quenching equipment and quenching system |
CN102864286A (en) * | 2011-07-05 | 2013-01-09 | 上海热处理厂有限公司 | Guide rail micro-deformation quenching method |
CN108284185A (en) * | 2018-01-15 | 2018-07-17 | 武汉理工大学 | A kind of improved method of driven roller for rail traffic bearer ring hot rolling forming |
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