JPS5770238A - Method of hardening treatment of thin soft steel plate - Google Patents
Method of hardening treatment of thin soft steel plateInfo
- Publication number
- JPS5770238A JPS5770238A JP14633680A JP14633680A JPS5770238A JP S5770238 A JPS5770238 A JP S5770238A JP 14633680 A JP14633680 A JP 14633680A JP 14633680 A JP14633680 A JP 14633680A JP S5770238 A JPS5770238 A JP S5770238A
- Authority
- JP
- Japan
- Prior art keywords
- steel plate
- thin soft
- soft steel
- electrodes
- electric current
- 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
- 229910000831 Steel Inorganic materials 0.000 title abstract 10
- 239000010959 steel Substances 0.000 title abstract 10
- 238000000034 method Methods 0.000 title abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 3
- 230000000694 effects Effects 0.000 abstract 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
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)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
PURPOSE:To locally increase the strength of a thin soft steel plate, by claming the thin soft steel plate between a pair of electrodes, passing a high electric current briefly to the electrodes to subject the steel plate to heat treatment, and immediately thereafter by quenching it through the heat conduction effect of the electrodes and the thin soft steel plate itself so that it is quenched locally. CONSTITUTION:The present method relates to a method of hardening treatment of a thin soft steel plate W wherein the thin soft steel plate W steel plate W is subjected to local heat treatment. In this heat treatment, the thin soft steel plate W is clamped between a pair of the electrodes 1a, 1b through which a high electric current, for example a high electric current of 5,000-8,000 amperes, is briefly passed to heat the points A to be strengthened which abur on the electrodes 1a, 1b. Immediately thereafter, the feeding of the current to the electrodes 1a, 1b is stopped, so that the points A to be strengthened is quenched through the heat conduction of the electrodes 1a, 1b and the thin soft steel plate W itself.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14633680A JPS5770238A (en) | 1980-10-21 | 1980-10-21 | Method of hardening treatment of thin soft steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14633680A JPS5770238A (en) | 1980-10-21 | 1980-10-21 | Method of hardening treatment of thin soft steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5770238A true JPS5770238A (en) | 1982-04-30 |
Family
ID=15405379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14633680A Pending JPS5770238A (en) | 1980-10-21 | 1980-10-21 | Method of hardening treatment of thin soft steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5770238A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4744501A (en) * | 1985-12-06 | 1988-05-17 | Kawasaki Jukogyo Kabushiki Kaisha | Method of preventing sag of panel and apparatus therefor |
| US5529646A (en) * | 1992-08-28 | 1996-06-25 | Toyota Jidosha Kabushiki Kaisha | Process of Producing high-formability steel plate with a great potential for strength enhancement by high-density energy |
| JP2011070014A (en) * | 2009-09-25 | 2011-04-07 | Sharp Corp | Fixing apparatus and image forming apparatus |
| CN104419808A (en) * | 2013-09-04 | 2015-03-18 | 现代自动车株式会社 | Blank forming device using electric direct heating and method of manufacturing a blank |
-
1980
- 1980-10-21 JP JP14633680A patent/JPS5770238A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4744501A (en) * | 1985-12-06 | 1988-05-17 | Kawasaki Jukogyo Kabushiki Kaisha | Method of preventing sag of panel and apparatus therefor |
| US5529646A (en) * | 1992-08-28 | 1996-06-25 | Toyota Jidosha Kabushiki Kaisha | Process of Producing high-formability steel plate with a great potential for strength enhancement by high-density energy |
| JP2011070014A (en) * | 2009-09-25 | 2011-04-07 | Sharp Corp | Fixing apparatus and image forming apparatus |
| CN104419808A (en) * | 2013-09-04 | 2015-03-18 | 现代自动车株式会社 | Blank forming device using electric direct heating and method of manufacturing a blank |
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