JPH0138853B2 - - Google Patents
Info
- Publication number
- JPH0138853B2 JPH0138853B2 JP60196980A JP19698085A JPH0138853B2 JP H0138853 B2 JPH0138853 B2 JP H0138853B2 JP 60196980 A JP60196980 A JP 60196980A JP 19698085 A JP19698085 A JP 19698085A JP H0138853 B2 JPH0138853 B2 JP H0138853B2
- Authority
- JP
- Japan
- Prior art keywords
- rail
- cooling
- rails
- hardness
- strength
- 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.)
- Expired
Links
- 238000001816 cooling Methods 0.000 claims description 25
- 229910001566 austenite Inorganic materials 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000005098 hot rolling Methods 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 229910001562 pearlite Inorganic materials 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 238000003466 welding Methods 0.000 description 8
- 239000010953 base metal Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 229910000851 Alloy steel Inorganic materials 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 229910000734 martensite Inorganic materials 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 229910001567 cementite Inorganic materials 0.000 description 2
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910019582 Cr V Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000004881 precipitation hardening Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Heat Treatment Of Articles (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19698085A JPS6256524A (ja) | 1985-09-06 | 1985-09-06 | 溶接性を付与した高強度レ−ルの製造法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19698085A JPS6256524A (ja) | 1985-09-06 | 1985-09-06 | 溶接性を付与した高強度レ−ルの製造法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6256524A JPS6256524A (ja) | 1987-03-12 |
| JPH0138853B2 true JPH0138853B2 (ru) | 1989-08-16 |
Family
ID=16366834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19698085A Granted JPS6256524A (ja) | 1985-09-06 | 1985-09-06 | 溶接性を付与した高強度レ−ルの製造法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6256524A (ru) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62127453A (ja) * | 1985-11-26 | 1987-06-09 | Nippon Kokan Kk <Nkk> | 延性及び靭性に優れた高性能レールの製造方法 |
| JPS6362846A (ja) * | 1986-09-03 | 1988-03-19 | Nippon Kokan Kk <Nkk> | 溶接部の耐軟化性に優れた低合金高強度レ−ル |
| US5762723A (en) | 1994-11-15 | 1998-06-09 | Nippon Steel Corporation | Pearlitic steel rail having excellent wear resistance and method of producing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198216A (en) * | 1981-05-27 | 1982-12-04 | Nippon Kokan Kk <Nkk> | Manufacture of high-strength rail |
| JPS57207117A (en) * | 1981-06-17 | 1982-12-18 | Nippon Kokan Kk <Nkk> | Joining method for heat treated rail |
-
1985
- 1985-09-06 JP JP19698085A patent/JPS6256524A/ja active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57198216A (en) * | 1981-05-27 | 1982-12-04 | Nippon Kokan Kk <Nkk> | Manufacture of high-strength rail |
| JPS57207117A (en) * | 1981-06-17 | 1982-12-18 | Nippon Kokan Kk <Nkk> | Joining method for heat treated rail |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6256524A (ja) | 1987-03-12 |
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