JPS5732325A - Production of austenitic stainless steel plate - Google Patents
Production of austenitic stainless steel plateInfo
- Publication number
- JPS5732325A JPS5732325A JP10641680A JP10641680A JPS5732325A JP S5732325 A JPS5732325 A JP S5732325A JP 10641680 A JP10641680 A JP 10641680A JP 10641680 A JP10641680 A JP 10641680A JP S5732325 A JPS5732325 A JP S5732325A
- Authority
- JP
- Japan
- Prior art keywords
- heating
- phase
- delta ferrite
- austenite
- production
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
Abstract
PURPOSE:To reduce the delta ferrite phase in non-equilibrium based on the microsegregation of Ni and Cr induced at the casting by heating a slab of controlled components exhibiting intrinsically an austenite signal phase within a specific temp. range prior to hot rolling. CONSTITUTION:A slab of, for example, SUS304 steel or SUS301 steel is heated to 1,250-1,350 deg.C, after which it is hot-rolled and is made into a steel plate product by way of one or more times of annealing. By this heating, the degree of the microsegration of Ni and Cr, that is, the difference in the concns. of Ni and Cr between a delta ferrite phase and an austenite phase is decreased. At the subsequent treatment such as solution heat treatment annealing or the like, the delta ferrite phase is made easy to transform to the austenite phase. The higher the above-described heating temp., the less the above-mentioned difference in concns. but above the upper limit, the scaling in a heating furnace is excessive and the production of surface flaws is significant. Below the lower limit, it is not possible to obtain a sufficient decrease in the degree of segregation. The heating time of about 10-30min is sufficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10641680A JPS5732325A (en) | 1980-08-04 | 1980-08-04 | Production of austenitic stainless steel plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10641680A JPS5732325A (en) | 1980-08-04 | 1980-08-04 | Production of austenitic stainless steel plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5732325A true JPS5732325A (en) | 1982-02-22 |
Family
ID=14433058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10641680A Pending JPS5732325A (en) | 1980-08-04 | 1980-08-04 | Production of austenitic stainless steel plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5732325A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS613835A (en) * | 1984-06-19 | 1986-01-09 | Nippon Mining Co Ltd | Manufacture of fe-ni alloy |
| KR100562643B1 (en) * | 2001-12-19 | 2006-03-20 | 주식회사 포스코 | method of manufacturing an austenitic stainless plate reducing delta ferrite through controlled rolling |
| CN110199048A (en) * | 2016-12-23 | 2019-09-03 | 株式会社Posco | Austenitic stainless steel converted products and its manufacturing method with excellent surface characteristic |
| CN110225992A (en) * | 2016-12-23 | 2019-09-10 | 株式会社Posco | Austenitic stainless steel and its manufacturing method with excellent processability and surface characteristic |
-
1980
- 1980-08-04 JP JP10641680A patent/JPS5732325A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS613835A (en) * | 1984-06-19 | 1986-01-09 | Nippon Mining Co Ltd | Manufacture of fe-ni alloy |
| JPH0133531B2 (en) * | 1984-06-19 | 1989-07-13 | Nippon Mining Co | |
| KR100562643B1 (en) * | 2001-12-19 | 2006-03-20 | 주식회사 포스코 | method of manufacturing an austenitic stainless plate reducing delta ferrite through controlled rolling |
| CN110199048A (en) * | 2016-12-23 | 2019-09-03 | 株式会社Posco | Austenitic stainless steel converted products and its manufacturing method with excellent surface characteristic |
| CN110225992A (en) * | 2016-12-23 | 2019-09-10 | 株式会社Posco | Austenitic stainless steel and its manufacturing method with excellent processability and surface characteristic |
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