GB1394197A - Annealing furnace and method for its operation - Google Patents
Annealing furnace and method for its operationInfo
- Publication number
- GB1394197A GB1394197A GB4287872A GB4287872A GB1394197A GB 1394197 A GB1394197 A GB 1394197A GB 4287872 A GB4287872 A GB 4287872A GB 4287872 A GB4287872 A GB 4287872A GB 1394197 A GB1394197 A GB 1394197A
- Authority
- GB
- United Kingdom
- Prior art keywords
- vestibule
- heating
- hydrogen
- line
- atmosphere gas
- 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
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 Strip Materials And Filament Materials (AREA)
- Tunnel Furnaces (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
- Furnace Details (AREA)
Abstract
1394197 Continuous heat treatment furnaces ALLEGHENY LUDLUM INDUSTRIES Inc 15 Sept 1972 [17 Sept 1971] 42878/72 Heading F4B [Also in Division C7] A continuous furnace for the heat treatment of silicon steel coils C on trucks 40 comprises an elongate structure divided into heating zones 8, 10, 12 and (14, Fig. 1B) and cooling zones 16, 26, 28 (30, Figs. 1B, 1C) and 31, a sealable entrance vestibule 4 and a similar discharge vestibule 20, a sealable intermediate transfer station 180, connections to vacuum pumps 160, 190 and 191 from zone 8, vestibule 4 and vestibule 20 respectively, and pipes 116, 118 supplying reconditioned atmosphere gas (hydrogen) to jets 120 at the discharge end of the furnace. Purging nitrogen may be supplied via controlled inlets 144 to the vestibules, which have controlled outlets 152 to the atmosphere. Hydrogen may also be supplied to the transfer station 180 through line 119 and valve 187 and to the vestibules through lines 142 and 116 and manifolds 144. A line 132 with valve 181 connects zone 8 with the other heating zones. Atmosphere gas withdrawn through headers 112 and 170 is returned to the reconditioner 110 where contaminants are removed and the gas is cooled. Headers 121 and 125 in the cooling sections are also used to withdraw atmosphere gas which is returned to roof jets 74 from coolers 122 and 126. A container 138 replaces hydrogen lost by leakage. Heating elements in the form of molybdenum rods (58, Figs. 2 and 3) are mounted on the walls in the heating sections and the refractory on said walls is gradually narrowed in the cooling sections until in the last of these it is nil. The coil carrying truck 40, Fig. 9, comprises lower layers of refractory 82, 84 with an upper layer formed with radiation tunnels 86 about the level of the heating elements, surmounted by silicon carbide tiles 90 and a hearth plate 92 of low carbon steel with a coating of alumina. In these layers a vertical hole (94, Fig. 10) in line with the centre coil opening 104 communicates with the radial radiation tunnels 86. A tube 95 carries a thermocouple 96 extending to a plug-in point 97 below the truck. The trucks are impelled by the piston-rod 44 of an hydraulic motor 42 outside the vestibule 4 and by similar piston-rods 44<SP>1</SP> of motors 42<SP>1</SP> located adjacent the transfer section 180.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18150471A | 1971-09-17 | 1971-09-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1394197A true GB1394197A (en) | 1975-05-14 |
Family
ID=22664547
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2714174A Expired GB1394200A (en) | 1971-09-17 | 1972-09-15 | |
GB4287872A Expired GB1394197A (en) | 1971-09-17 | 1972-09-15 | Annealing furnace and method for its operation |
GB2713974A Expired GB1394198A (en) | 1971-09-17 | 1972-09-15 | Annealing furnace and method for its operation |
GB2714074A Expired GB1394199A (en) | 1971-09-17 | 1972-09-15 | Annealing furnace and method for its operation |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2714174A Expired GB1394200A (en) | 1971-09-17 | 1972-09-15 |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2713974A Expired GB1394198A (en) | 1971-09-17 | 1972-09-15 | Annealing furnace and method for its operation |
GB2714074A Expired GB1394199A (en) | 1971-09-17 | 1972-09-15 | Annealing furnace and method for its operation |
Country Status (13)
Country | Link |
---|---|
JP (2) | JPS5627580B2 (en) |
AT (1) | AT329104B (en) |
AU (1) | AU474698B2 (en) |
BE (1) | BE788908A (en) |
BR (1) | BR7206463D0 (en) |
CA (1) | CA970964A (en) |
DE (1) | DE2244913C2 (en) |
ES (1) | ES406750A1 (en) |
FR (1) | FR2152930B1 (en) |
GB (4) | GB1394200A (en) |
IT (1) | IT965376B (en) |
PL (1) | PL74015B1 (en) |
SE (2) | SE440367B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002044430A1 (en) * | 2000-11-30 | 2002-06-06 | The Boc Group Plc | Quenching method and apparatus |
CN113265524A (en) * | 2021-05-19 | 2021-08-17 | 哈尔滨电机厂有限责任公司 | High-temperature anti-oxidation method for forging and welding shaft part sliding rotor |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4167426A (en) * | 1978-04-20 | 1979-09-11 | Allegheny Ludlum Industries, Inc. | Method for annealing silicon steel |
JPS5919187B2 (en) * | 1978-05-15 | 1984-05-02 | 中川株式会社 | Bright annealing method |
JPS5716131A (en) * | 1980-06-30 | 1982-01-27 | Daido Steel Co Ltd | Operation of annealer for metal strip coil |
AT395321B (en) * | 1983-07-05 | 1992-11-25 | Ebner Ind Ofenbau | METHOD FOR COOLING CHARGES IN DISCONTINUOUSLY WORKING INDUSTRIAL OVENS, ESPECIALLY STEEL WIRE OR TAPE BANDS IN DOME GLUES |
JPS6126528A (en) * | 1984-07-14 | 1986-02-05 | Hoya Corp | Apparatus for producing pressed lens |
JP7196447B2 (en) * | 2018-07-25 | 2022-12-27 | 大同特殊鋼株式会社 | Continuous atmosphere heat treatment furnace |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3063878A (en) * | 1958-05-07 | 1962-11-13 | Wilson Lee | Method of and apparatus for annealing |
-
0
- BE BE788908D patent/BE788908A/en not_active IP Right Cessation
-
1972
- 1972-09-01 CA CA150,744A patent/CA970964A/en not_active Expired
- 1972-09-06 AU AU46349/72A patent/AU474698B2/en not_active Expired
- 1972-09-13 FR FR7232486A patent/FR2152930B1/fr not_active Expired
- 1972-09-13 DE DE19722244913 patent/DE2244913C2/en not_active Expired
- 1972-09-14 AT AT787972A patent/AT329104B/en not_active IP Right Cessation
- 1972-09-15 GB GB2714174A patent/GB1394200A/en not_active Expired
- 1972-09-15 GB GB4287872A patent/GB1394197A/en not_active Expired
- 1972-09-15 GB GB2713974A patent/GB1394198A/en not_active Expired
- 1972-09-15 IT IT5278172A patent/IT965376B/en active
- 1972-09-15 GB GB2714074A patent/GB1394199A/en not_active Expired
- 1972-09-15 SE SE1198972A patent/SE440367B/en unknown
- 1972-09-16 ES ES406750A patent/ES406750A1/en not_active Expired
- 1972-09-18 JP JP9295172A patent/JPS5627580B2/ja not_active Expired
- 1972-09-18 PL PL15779672A patent/PL74015B1/en unknown
- 1972-09-18 BR BR646372A patent/BR7206463D0/en unknown
-
1975
- 1975-10-16 SE SE7511643A patent/SE440368B/en not_active IP Right Cessation
-
1980
- 1980-11-07 JP JP15673080A patent/JPS5677325A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002044430A1 (en) * | 2000-11-30 | 2002-06-06 | The Boc Group Plc | Quenching method and apparatus |
US7147732B2 (en) | 2000-11-30 | 2006-12-12 | The Boc Group Plc | Quenching method and apparatus |
CN113265524A (en) * | 2021-05-19 | 2021-08-17 | 哈尔滨电机厂有限责任公司 | High-temperature anti-oxidation method for forging and welding shaft part sliding rotor |
Also Published As
Publication number | Publication date |
---|---|
SE7511643L (en) | 1975-10-16 |
BR7206463D0 (en) | 1973-09-13 |
JPS5627580B2 (en) | 1981-06-25 |
ES406750A1 (en) | 1975-10-01 |
BE788908A (en) | 1973-03-15 |
SE440367B (en) | 1985-07-29 |
FR2152930B1 (en) | 1977-01-14 |
AU4634972A (en) | 1974-03-14 |
JPS5677325A (en) | 1981-06-25 |
PL74015B1 (en) | 1974-10-30 |
AU474698B2 (en) | 1976-07-29 |
DE2244913C2 (en) | 1985-06-05 |
GB1394200A (en) | 1975-05-14 |
FR2152930A1 (en) | 1973-04-27 |
SE440368B (en) | 1985-07-29 |
IT965376B (en) | 1974-01-31 |
AT329104B (en) | 1976-04-26 |
JPS5735247B2 (en) | 1982-07-28 |
GB1394199A (en) | 1975-05-14 |
ATA787972A (en) | 1975-07-15 |
GB1394198A (en) | 1975-05-14 |
CA970964A (en) | 1975-07-15 |
DE2244913A1 (en) | 1973-03-22 |
JPS4838214A (en) | 1973-06-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |