JPS54143712A - Manufacture of roll with hardness differance by controlled heating and cooling - Google Patents
Manufacture of roll with hardness differance by controlled heating and coolingInfo
- Publication number
- JPS54143712A JPS54143712A JP5194178A JP5194178A JPS54143712A JP S54143712 A JPS54143712 A JP S54143712A JP 5194178 A JP5194178 A JP 5194178A JP 5194178 A JP5194178 A JP 5194178A JP S54143712 A JPS54143712 A JP S54143712A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- section
- heat
- hardness
- insulating material
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/38—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for roll bodies
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 Articles (AREA)
Abstract
PURPOSE:To provide a roll having sections differ in hardness in the direction of the axis, by heat treatment of the roll with heat-insulating material wound round the required section of the roll in order to harden the section with no heat-insulating material to a higher degree, and the section with heat-insulating material to a lower degree. CONSTITUTION:When a roll 1 for rolling shapes, for example, has simultaneously section A used in finishing, and a section B used in rough finishing, the section B is wound with heat-insulating material 2. The roll 1 is heated uniformly to about 650 deg.C, the crust of the section A is then heated rapidly to the austenite temp. region, and the crust of the section A is quenched. Hereby a roll with sections having hardness suitable for respective use is produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5194178A JPS54143712A (en) | 1978-04-28 | 1978-04-28 | Manufacture of roll with hardness differance by controlled heating and cooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5194178A JPS54143712A (en) | 1978-04-28 | 1978-04-28 | Manufacture of roll with hardness differance by controlled heating and cooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54143712A true JPS54143712A (en) | 1979-11-09 |
Family
ID=12900885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5194178A Pending JPS54143712A (en) | 1978-04-28 | 1978-04-28 | Manufacture of roll with hardness differance by controlled heating and cooling |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54143712A (en) |
-
1978
- 1978-04-28 JP JP5194178A patent/JPS54143712A/en active Pending
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