JPS57155317A - Decarburization-preventive heating method for steel rolling process - Google Patents
Decarburization-preventive heating method for steel rolling processInfo
- Publication number
- JPS57155317A JPS57155317A JP4195881A JP4195881A JPS57155317A JP S57155317 A JPS57155317 A JP S57155317A JP 4195881 A JP4195881 A JP 4195881A JP 4195881 A JP4195881 A JP 4195881A JP S57155317 A JPS57155317 A JP S57155317A
- Authority
- JP
- Japan
- Prior art keywords
- steel materials
- decarburization
- rolling process
- residence time
- heated
- 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
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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
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)
- Metal Rolling (AREA)
Abstract
PURPOSE:To effectively prevent the decarburization in rolling process of steel materials by operating a heating furnace in such a way that the residence time of steel materials in the heating furnace until the time when the surface temperature of the steel materials to be heated attains a specific temperature amounts in a specific per cent in the whole residence time. CONSTITUTION:In the operation of a heating furnace in the rolling process of steel materials, the residence time of steel materials to be heated in the furnace until time when the surface temperature of the steel materials attains 650 deg.C is set up so that it amounts 80-90% of the whole residence time. Thus, the ferrite decarburization in the steel materials to be heated can be prevented and the total decarburization depth and the amount of scale formed can therefore be greatly improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4195881A JPS57155317A (en) | 1981-03-23 | 1981-03-23 | Decarburization-preventive heating method for steel rolling process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4195881A JPS57155317A (en) | 1981-03-23 | 1981-03-23 | Decarburization-preventive heating method for steel rolling process |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57155317A true JPS57155317A (en) | 1982-09-25 |
Family
ID=12622691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4195881A Pending JPS57155317A (en) | 1981-03-23 | 1981-03-23 | Decarburization-preventive heating method for steel rolling process |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57155317A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01298119A (en) * | 1988-05-27 | 1989-12-01 | Sumitomo Electric Ind Ltd | Method for heating billet for hot working |
CN105387824A (en) * | 2015-11-20 | 2016-03-09 | 武汉钢铁(集团)公司 | Quenched steel decarburized layer depth measuring method |
-
1981
- 1981-03-23 JP JP4195881A patent/JPS57155317A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01298119A (en) * | 1988-05-27 | 1989-12-01 | Sumitomo Electric Ind Ltd | Method for heating billet for hot working |
CN105387824A (en) * | 2015-11-20 | 2016-03-09 | 武汉钢铁(集团)公司 | Quenched steel decarburized layer depth measuring method |
CN105387824B (en) * | 2015-11-20 | 2018-07-10 | 武汉钢铁有限公司 | Hardened steel decarburized layer deepness measuring method |
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