IE35144B1 - Heat treatment process for low-carbon steel - Google Patents
Heat treatment process for low-carbon steelInfo
- Publication number
- IE35144B1 IE35144B1 IE477/71A IE47771A IE35144B1 IE 35144 B1 IE35144 B1 IE 35144B1 IE 477/71 A IE477/71 A IE 477/71A IE 47771 A IE47771 A IE 47771A IE 35144 B1 IE35144 B1 IE 35144B1
- Authority
- IE
- Ireland
- Prior art keywords
- bar
- temperature
- sec
- central region
- april
- Prior art date
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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Steel (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
1345387 Continuously heat treating steel bar BAU-STAHLGEWEBE GmbH 30 April 1971 [30 April 1970 13 March 1971] 12418/71 Headings C7A and C7N Non-alloyed or structural steel bar containing up to 0À26% C and up to 1À8% Mn and in a 10% to 70% cold-worked condition is continuously heat treated by passage through a rapid heating zone e.g. induction or electron beam, wherein the outer zone of the bar is heated to a temperature between 600 and 1300C so that the central region of the bar is heated at at least 100C/sec. to a temperature between 450C and Ac 3 , after which the bar is quenched before the central region undergoes any transformation and in the time interval between the temperature of the central region reaching 450C and that of the surface region falling to 550C. Preferably quenching is effected by water under pressure e.g. 6 to 30 litres per kg. of steel at 3 to 12 atmospheres, to produce an initial cooling rate of 1200 to 1500C/sec. and an average rate of at least 800C/sec. Quenching may be initiated when the outer and core regions are at the same temperature, and may be followed by a further treatment at 100 to 340C, particularly for 20 to 30 minutes. The process is applied particularly to bar for concrete reinforcement.
[GB1345387A]
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2021245A DE2021245C3 (en) | 1970-04-30 | 1970-04-30 | Continuous heat treatment process on rod-shaped structural steels |
| DE2112103 | 1971-03-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE35144L IE35144L (en) | 1971-10-30 |
| IE35144B1 true IE35144B1 (en) | 1975-11-26 |
Family
ID=25759062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE477/71A IE35144B1 (en) | 1970-04-30 | 1971-04-29 | Heat treatment process for low-carbon steel |
Country Status (21)
| Country | Link |
|---|---|
| US (1) | US3795550A (en) |
| AR (1) | AR196395A1 (en) |
| AT (1) | AT325085B (en) |
| BE (1) | BE766405A (en) |
| BR (1) | BR7102635D0 (en) |
| CA (1) | CA946270A (en) |
| CH (1) | CH552064A (en) |
| CS (1) | CS179953B2 (en) |
| DK (1) | DK130192B (en) |
| ES (1) | ES390697A1 (en) |
| FR (1) | FR2091027A5 (en) |
| GB (1) | GB1345387A (en) |
| HU (1) | HU167409B (en) |
| IE (1) | IE35144B1 (en) |
| IL (1) | IL36660A (en) |
| LU (1) | LU63070A1 (en) |
| NL (1) | NL7105932A (en) |
| NO (1) | NO132964C (en) |
| PL (1) | PL81634B1 (en) |
| RO (1) | RO61536A (en) |
| SE (1) | SE368838B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2124041C3 (en) * | 1971-05-14 | 1981-05-07 | Bau-Stahlgewebe GmbH, 4000 Düsseldorf | Application of a continuous heat treatment process to rod-shaped, hypoeutectoid heat treatable steels |
| US3929524A (en) * | 1973-07-26 | 1975-12-30 | Nikolai Grigorievich Filatov | Method of heat treating linear long-length steel articles, apparatus for effecting said method and articles produced thereby |
| US4407683A (en) * | 1978-04-28 | 1983-10-04 | Neturen Company, Ltd. | Steel for cold plastic working |
| GB2023668B (en) * | 1978-04-28 | 1982-10-13 | Neturen Co Ltd | Steel for cold plastic working |
| US4248766A (en) * | 1979-06-18 | 1981-02-03 | The B. F. Goodrich Company | Didodecylammonium beta-octamolybdate and composition containing same |
| US4362578A (en) * | 1980-10-16 | 1982-12-07 | Teledyne Industries, Inc. | Method of hot working metal with induction reheating |
| US4793869A (en) * | 1987-04-10 | 1988-12-27 | Signode Corporation | Continuous treatment of cold-rolled carbon manganese steel |
| MX165036B (en) * | 1987-04-10 | 1992-10-16 | Signode Corp | CONTINUOUS TREATMENT OF COLD ROLLED CARBON MANGANESE STEEL |
| FR2703069B1 (en) * | 1993-03-26 | 1995-07-07 | Aciers Armature Beton | Method of heat treatment of a reinforcement, for example for reinforced concrete and reinforcement obtained according to this process. |
| CN112708742A (en) * | 2020-12-07 | 2021-04-27 | 江苏省镔鑫钢铁集团有限公司 | Continuous induction heat treatment process and treatment device for high-strength finish-rolled twisted steel |
| CN113174466B (en) * | 2021-04-30 | 2023-01-13 | 洛阳Lyc轴承有限公司 | Induction quenching method for 40Cr15Mo2VN high-nitrogen stainless bearing steel |
| CN113801979A (en) * | 2021-09-16 | 2021-12-17 | 青海大学 | Method for simulating fire detection to influence ultimate strength of earthquake resistance reinforcing steel bars of building |
-
1971
- 1971-04-20 CS CS7100002853A patent/CS179953B2/en unknown
- 1971-04-20 IL IL36660A patent/IL36660A/en unknown
- 1971-04-26 PL PL1971147778A patent/PL81634B1/pl unknown
- 1971-04-28 LU LU63070D patent/LU63070A1/xx unknown
- 1971-04-28 CH CH623271A patent/CH552064A/en not_active IP Right Cessation
- 1971-04-28 AR AR235270A patent/AR196395A1/en active
- 1971-04-28 ES ES71390697A patent/ES390697A1/en not_active Expired
- 1971-04-28 BE BE766405A patent/BE766405A/en unknown
- 1971-04-29 AT AT370671A patent/AT325085B/en active
- 1971-04-29 SE SE05578/71A patent/SE368838B/xx unknown
- 1971-04-29 DK DK206271AA patent/DK130192B/en unknown
- 1971-04-29 IE IE477/71A patent/IE35144B1/en unknown
- 1971-04-29 NL NL7105932A patent/NL7105932A/xx unknown
- 1971-04-29 HU HU71BA2575A patent/HU167409B/hu unknown
- 1971-04-29 US US00138657A patent/US3795550A/en not_active Expired - Lifetime
- 1971-04-29 NO NO1591/71A patent/NO132964C/no unknown
- 1971-04-30 FR FR7115655A patent/FR2091027A5/fr not_active Expired
- 1971-04-30 CA CA111,828A patent/CA946270A/en not_active Expired
- 1971-04-30 GB GB1241871A patent/GB1345387A/en not_active Expired
- 1971-04-30 RO RO66769A patent/RO61536A/ro unknown
- 1971-04-30 BR BR2635/71A patent/BR7102635D0/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AR196395A1 (en) | 1973-12-27 |
| PL81634B1 (en) | 1975-08-30 |
| AT325085B (en) | 1975-10-10 |
| NO132964B (en) | 1975-11-03 |
| IE35144L (en) | 1971-10-30 |
| IL36660A0 (en) | 1971-06-23 |
| FR2091027A5 (en) | 1972-01-14 |
| RO61536A (en) | 1977-02-15 |
| BE766405A (en) | 1971-10-28 |
| CS179953B2 (en) | 1977-12-30 |
| DK130192C (en) | 1975-06-16 |
| US3795550A (en) | 1974-03-05 |
| HU167409B (en) | 1975-10-28 |
| SE368838B (en) | 1974-07-22 |
| DK130192B (en) | 1975-01-13 |
| IL36660A (en) | 1975-12-31 |
| LU63070A1 (en) | 1972-06-28 |
| NL7105932A (en) | 1971-11-02 |
| ES390697A1 (en) | 1973-07-01 |
| BR7102635D0 (en) | 1973-04-26 |
| CH552064A (en) | 1974-07-31 |
| NO132964C (en) | 1976-02-11 |
| CA946270A (en) | 1974-04-30 |
| GB1345387A (en) | 1974-01-30 |
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