JPH0321608B2 - - Google Patents
Info
- Publication number
- JPH0321608B2 JPH0321608B2 JP20879783A JP20879783A JPH0321608B2 JP H0321608 B2 JPH0321608 B2 JP H0321608B2 JP 20879783 A JP20879783 A JP 20879783A JP 20879783 A JP20879783 A JP 20879783A JP H0321608 B2 JPH0321608 B2 JP H0321608B2
- Authority
- JP
- Japan
- Prior art keywords
- transformation point
- temperature range
- cooling
- seconds
- ferrite
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 45
- 239000010959 steel Substances 0.000 claims description 45
- 230000009466 transformation Effects 0.000 claims description 43
- 238000001816 cooling Methods 0.000 claims description 38
- 229910001566 austenite Inorganic materials 0.000 claims description 24
- 229910000859 α-Fe Inorganic materials 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 229910052796 boron Inorganic materials 0.000 claims description 6
- 238000002791 soaking Methods 0.000 claims description 6
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- 229910052738 indium Inorganic materials 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 11
- 238000000137 annealing Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 229910000734 martensite Inorganic materials 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 229910001563 bainite Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010960 cold rolled steel Substances 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/185—Hardening; Quenching with or without subsequent tempering from an intercritical temperature
-
- 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
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
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 Steel (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20879783A JPS60100630A (ja) | 1983-11-07 | 1983-11-07 | 延性と曲げ加工性の良好な高強度薄鋼板の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20879783A JPS60100630A (ja) | 1983-11-07 | 1983-11-07 | 延性と曲げ加工性の良好な高強度薄鋼板の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60100630A JPS60100630A (ja) | 1985-06-04 |
| JPH0321608B2 true JPH0321608B2 (en]) | 1991-03-25 |
Family
ID=16562273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20879783A Granted JPS60100630A (ja) | 1983-11-07 | 1983-11-07 | 延性と曲げ加工性の良好な高強度薄鋼板の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60100630A (en]) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE1015018A3 (fr) | 2002-07-02 | 2004-08-03 | Ct Rech Metallurgiques Asbl | Procede pour le traitement thermique d'une bande d'acier laminee a froid, procede de fabrication d'une bande d'acier adaptee au fromage et bande d'acier ainsi obtenue. |
| US8257513B2 (en) * | 2007-08-01 | 2012-09-04 | Kobe Steel, Ltd. | High strength steel sheet excellent in bending workability and fatigue strength |
| JP5379494B2 (ja) * | 2009-01-07 | 2013-12-25 | 株式会社神戸製鋼所 | コイル内での強度ばらつきの小さい高強度冷延鋼板コイルおよびその製造方法 |
-
1983
- 1983-11-07 JP JP20879783A patent/JPS60100630A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60100630A (ja) | 1985-06-04 |
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