GB912384A - Method of and apparatus for annealing - Google Patents
Method of and apparatus for annealingInfo
- Publication number
- GB912384A GB912384A GB8193/59A GB819359A GB912384A GB 912384 A GB912384 A GB 912384A GB 8193/59 A GB8193/59 A GB 8193/59A GB 819359 A GB819359 A GB 819359A GB 912384 A GB912384 A GB 912384A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coil
- gas
- coils
- station
- heated
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- 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
- C21D9/0037—Rotary furnaces with vertical axis; Furnaces with rotating floor
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 Treatments In General, Especially Conveying And Cooling (AREA)
- Tunnel Furnaces (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
912,384. Annealing coiled strip in open form. WILSON, L. March 10, 1959 [May 7, 1958], No. 8193/59. Class 72. [Also in Group XII] In a process for annealing coils of strip in opened-lap form, by a hot gas, the coils of strip e.g. cold rolled steel are treated cyclically at a series of stations, by adding and removing coils at opposite ends of the series, heating to a predetermined temperature by forcing the gas vertically through the opened laps at an intermediate station, circulating gas in a closed path through one coil which has been heated and then one which has not, to cool the one and preheat the other, the coils being moved step-by-step whereby each is successively preheated, heated, soaked and cooled. As shown in plan, Fig. 2, rotary hearth H is supported by wheels on tracks between inner wall 2 and outer wall 1 of the furnace. The furnace space is divided into compartments by dividing walls 11-17 supported on the hearth. Open lapped coils are placed on a support unit S on carriage L which is run on rails 24 into purge chamber P closed by doors 20 and 22. The support unit is in the form of a grid having openings only below the open lapped coil, whereby the hot gas flows solely between the coil laps. An inert or deoxidizing gas is circulated through it to remove air and then door 20 opened to give access to station I on the hearth on to which it is lowered with support S by carriage L and hydraulic jack 55. The carriage is withdrawn, door 20 closed, and furnace gas circulated up through coil 66, driven through conduit 33 by a fan down through hot coil 65 at about 900 F., through passage 33 back to the bottom of coil 66 eventually equalizing the temperature of the two coils. After about 1 hour hearth H is rotated to bring each coil to the next station. Coil 67 at station II has gas circulated down through it, via passage 37, up through the coil at station VI and through a passage 36, while coil 68 at station II is heated by gas circulated by a fan up through the coil and back to an external heater A, where it contacts radiant tubes heated by gas or electricity, to bring it up to the annealing temperature of 1320 F. Coils 69 and 70 at stations IV and V are heated by the series circulation of gas up through coil 70 and down through coil 69 and back to a second external heater A1, thus providing a soaking time of 2 hours for which the coils are kept at the annealing temperature at these stations. Meanwhile coils 71 and 65 are cooled as described at stations VI and VII and coil 65 can then be unloaded by means of carriage L<SP>1</SP> which first moves it into the unloading chamber F through which cooled gas is circulated by fan 58, and then out of door 23. The finished coil is removed by hydraulic lifters 55. The hot gas passes upwards in one stage and downwards in the next to attain uniform heating of the coil. The stepby-step motion is achieved by an indexing control. The invention is equally applicable to a straight line or V-type furnace. Specifications 878,497 and 890,409 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US733762A US3063878A (en) | 1958-05-07 | 1958-05-07 | Method of and apparatus for annealing |
Publications (1)
Publication Number | Publication Date |
---|---|
GB912384A true GB912384A (en) | 1962-12-05 |
Family
ID=24949016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8193/59A Expired GB912384A (en) | 1958-05-07 | 1959-03-10 | Method of and apparatus for annealing |
Country Status (3)
Country | Link |
---|---|
US (1) | US3063878A (en) |
BE (1) | BE577948A (en) |
GB (1) | GB912384A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2162294A (en) * | 1984-07-27 | 1986-01-29 | Daimler Benz Ag | Annular rotary hearth furnace for heat-treating workpieces |
GB2167170A (en) * | 1984-11-21 | 1986-05-21 | Salem Furnace | Heat treatment of coils of metal |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1321463A (en) * | 1962-02-05 | 1963-03-22 | Heurtey Sa | Furnace for reheating and heat treatment of metal products and in particular ingots |
US3133180A (en) * | 1962-07-02 | 1964-05-12 | Itt | Oven apparatus for testing electrical components |
GB1011274A (en) * | 1963-06-08 | 1965-11-24 | Westland Aircraft Ltd | Means and method for preparing gas-treated objects |
US3446491A (en) * | 1967-09-22 | 1969-05-27 | Wilson Eng Co Inc Lee | Apparatus for handling open coils of strip metal |
US3778221A (en) * | 1969-02-26 | 1973-12-11 | Allegheny Ludlum Ind Inc | Annealing furnace and method for its operation |
US3649327A (en) * | 1969-08-27 | 1972-03-14 | Ferro Corp | Endless furnace and the method of utilizing same for dry process, vitreous enameling |
BE788908A (en) * | 1971-09-17 | 1973-03-15 | Allegheny Ludlum Ind Inc | OVEN FOR RECEIVING THE STRIP COILS AND ITS OPERATING PROCESS |
US3836320A (en) * | 1972-03-17 | 1974-09-17 | Midland Ross Corp | Minimum scale reheating furnace and means relating thereto |
US3819323A (en) * | 1972-03-17 | 1974-06-25 | Midland Ross Corp | Minimum scale reheating furnace and means relating thereto |
US3925005A (en) * | 1974-10-04 | 1975-12-09 | American Power Tread Corp | Modular curing chamber |
US3982889A (en) * | 1975-07-14 | 1976-09-28 | Olson Benjamin F | Preheating system for aluminum remelt furnace |
US4047886A (en) * | 1975-11-24 | 1977-09-13 | Commissariat A L'energie Atomique | Furnace for the continuous sintering of pellets of ceramic nuclear fuel material |
US4022570A (en) * | 1976-05-05 | 1977-05-10 | Caterpillar Tractor Co. | Warm form cooling and heat recovery tunnel |
US4079921A (en) * | 1976-06-18 | 1978-03-21 | Lee Wilson Engineering Company, Inc. | Apparatus and method for continuous treatment of metal coils or the like |
DE2737615C2 (en) * | 1977-08-20 | 1983-10-06 | Fa. J. Aichelin, 7015 Korntal | Continuous furnace for protective gas operation |
US4886449A (en) * | 1982-12-04 | 1989-12-12 | General Motors Corporation | Vacuum brazing of aluminum alloy workpieces |
DE3306911A1 (en) * | 1983-02-26 | 1984-08-30 | Ruhrgas Ag, 4300 Essen | METHOD FOR OPERATING A TURNTABLE OVEN OR THE LIKE, Purged With Shielding Gas |
JPS609801A (en) * | 1983-06-27 | 1985-01-18 | Chugai Ro Kogyo Kaisha Ltd | Vacuum sintering furnace |
US4817920A (en) * | 1984-11-21 | 1989-04-04 | Salem Furnace Co. | Apparatus for continuous heat treatment of metal strip in coil form |
US4874312A (en) * | 1985-03-11 | 1989-10-17 | Hailey Robert W | Heating and handling system for objects |
DE3738527C1 (en) * | 1987-11-13 | 1988-06-09 | Lingl Anlagenbau | Transfer platform for tunnel kiln operation |
US4997364A (en) * | 1988-02-22 | 1991-03-05 | Radiant Technology Corporation | Furnace assembly for reflowing solder on printed circuit boards |
JPH0739028B2 (en) * | 1989-06-30 | 1995-05-01 | 松下電器産業株式会社 | Atmosphere furnace |
US20070205544A1 (en) * | 2005-02-18 | 2007-09-06 | O'brien & Gere Engineers, Inc. | Rotary Hearth Sintering Furnace |
DE102007047772B4 (en) * | 2007-10-05 | 2011-07-21 | Multitest elektronische Systeme GmbH, 83026 | Temperature chamber for tempering electronic components, in particular IC's |
AT507423B1 (en) * | 2009-03-25 | 2010-05-15 | Ebner Ind Ofenbau | PROCESS FOR PREHEATING GLOWING IN A BROWN GLOW SYSTEM |
JP6061702B2 (en) * | 2013-01-30 | 2017-01-18 | 株式会社神戸製鋼所 | Material for fuel cell separator and method for producing fuel cell separator |
DE102015203376A1 (en) * | 2014-02-26 | 2015-08-27 | Sms Siemag Ag | Method and plant for the thermal treatment of elongated, flat metallic material, in particular aluminum ingots, in a ring hearth furnace |
DE102019108873A1 (en) * | 2019-04-04 | 2020-10-08 | Schwartz Gmbh | Rotary hearth furnace for the heat treatment of metallic workpieces and the corresponding process for heat treatment |
CN111378827B (en) * | 2020-03-24 | 2024-06-18 | 南京正光炉业有限责任公司 | Step-by-step magnesium alloy coiled tape annealing furnace |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2777683A (en) * | 1957-01-15 | ferguson | ||
US1546532A (en) * | 1924-03-18 | 1925-07-21 | Thaddeus F Baily | Method of annealing |
US1727192A (en) * | 1926-08-20 | 1929-09-03 | Thaddeus F Baily | Annealing equipment and method |
DE500824C (en) * | 1927-12-28 | 1930-06-25 | Aichelin Fa J | Carousel oven with a ring-shaped hearth divided into chambers by partition walls |
US1903909A (en) * | 1930-04-30 | 1933-04-18 | Electric Furnace Co | Rotary heat treating furnace |
US1938306A (en) * | 1931-05-04 | 1933-12-05 | Eastwood Nealley Corp | Annealing furnace |
US2234871A (en) * | 1937-04-15 | 1941-03-11 | G W B Electric Furnaces Ltd | Furnace |
US2143905A (en) * | 1937-07-14 | 1939-01-17 | Smidth & Co As F L | Process for burning cement and similar raw material |
US2507274A (en) * | 1947-01-23 | 1950-05-09 | Cold Metal Products Company | Furnace |
US2499926A (en) * | 1947-04-22 | 1950-03-07 | Donald W Lloyd | Continuous circular ingot-heating furnace |
US2622861A (en) * | 1950-03-08 | 1952-12-23 | Randal E Talley | Rotary hearth furnace |
-
1958
- 1958-05-07 US US733762A patent/US3063878A/en not_active Expired - Lifetime
-
1959
- 1959-03-10 GB GB8193/59A patent/GB912384A/en not_active Expired
- 1959-04-21 BE BE577948A patent/BE577948A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2162294A (en) * | 1984-07-27 | 1986-01-29 | Daimler Benz Ag | Annular rotary hearth furnace for heat-treating workpieces |
GB2167170A (en) * | 1984-11-21 | 1986-05-21 | Salem Furnace | Heat treatment of coils of metal |
Also Published As
Publication number | Publication date |
---|---|
BE577948A (en) | 1959-10-21 |
US3063878A (en) | 1962-11-13 |
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