ES469147A1 - Rapid and continuous heat treatment of cold rolled steel sheet - with brief quenching and reheating to give good deep drawing behaviour - Google Patents
Rapid and continuous heat treatment of cold rolled steel sheet - with brief quenching and reheating to give good deep drawing behaviourInfo
- Publication number
- ES469147A1 ES469147A1 ES78469147A ES469147A ES469147A1 ES 469147 A1 ES469147 A1 ES 469147A1 ES 78469147 A ES78469147 A ES 78469147A ES 469147 A ES469147 A ES 469147A ES 469147 A1 ES469147 A1 ES 469147A1
- Authority
- ES
- Spain
- Prior art keywords
- esp
- degrees
- deep drawing
- pref
- bath
- 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
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
- C21D1/26—Methods of annealing
-
- 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
- C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
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 Sheet Steel (AREA)
Abstract
Cold rolled steel sheet is continuously heat treated by heating to above its recrystallisation temp. and then cooling rapidly by immersion in an aq. both kept at above 75 degrees C, pref. >85 degrees C, esp. using a bath with a uniform temp. Heating is pref. faster than 10 degrees C/second, esp. 30 degrees C/second in a non-oxidising, direct flame furnace. The bath may contain only water, or also materials in soln. or suspension to alter the heat transfer, e.g. CaCl2, borax, or surfactants such as palmitates or stearates corrosion inhibitors may also be present, and the pref. bath temp. is 80-150 degrees C. Cooling in the bath is pref. at 25-180, esp. 35-150 degrees C/second to 200-400 degrees C., then at 90-500, esp. 150-450 degrees C. The steel may be high strength steel, or soft steel for deep drawing where the compsn. is 0.15, esp. 0.1% max C, 0.6, esp. 0.5% max. Mn,, 0.02% max. Si, opt. with 0,001-0.05%, B, esp. where the % B = 1 to 3 times the % N2. Steels can be made with an excellent combination of elastic limit and elongation, esp. for use in mfg. motor cars where good deep drawing properties are required. High tensile steels can also be made.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE6045990A BE854191A (en) | 1977-05-02 | 1977-05-02 | CONTINUOUS THERMAL TREATMENT PROCESS OF LAMINATED SHEETS |
Publications (1)
Publication Number | Publication Date |
---|---|
ES469147A1 true ES469147A1 (en) | 1979-01-01 |
Family
ID=3874736
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES78469147A Expired ES469147A1 (en) | 1977-05-02 | 1978-04-26 | Rapid and continuous heat treatment of cold rolled steel sheet - with brief quenching and reheating to give good deep drawing behaviour |
Country Status (3)
Country | Link |
---|---|
AT (1) | AT375403B (en) |
DE (1) | DE2818215A1 (en) |
ES (1) | ES469147A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54163719A (en) * | 1978-06-16 | 1979-12-26 | Nippon Steel Corp | Production of high tensile strength * low yield ratio and high extensibility composite textured steel panel with excellent workability |
-
1978
- 1978-04-26 DE DE19782818215 patent/DE2818215A1/en active Granted
- 1978-04-26 ES ES78469147A patent/ES469147A1/en not_active Expired
- 1978-04-28 AT AT312978A patent/AT375403B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
AT375403B (en) | 1984-08-10 |
ATA312978A (en) | 1983-12-15 |
DE2818215C2 (en) | 1987-02-12 |
DE2818215A1 (en) | 1978-11-16 |
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