GB630962A - Improvements in or relating to a heat treating furnace - Google Patents
Improvements in or relating to a heat treating furnaceInfo
- Publication number
- GB630962A GB630962A GB6975/46A GB697546A GB630962A GB 630962 A GB630962 A GB 630962A GB 6975/46 A GB6975/46 A GB 6975/46A GB 697546 A GB697546 A GB 697546A GB 630962 A GB630962 A GB 630962A
- Authority
- GB
- United Kingdom
- Prior art keywords
- air
- furnace
- gas
- nozzles
- conduits
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
Abstract
630,962. Chimneys. FURNACE ENGINEERS, Inc. March 6, 1946, No. 6975. Convention date, March 27, 1945. [Class 25] [Also in Group XII] A bell-type heat treatment furnace 1, fired by main burners 8 supplied with primary air and gas and secondary burners 9 supplied with raw gas, is ventilated by conduits 31 reaching almost to the furnace floor, said conduits terminating in venturi throats 32 forming air-operated eductors. Compressed air is normally supplied to a series of circumferentially spaced jets in the narrowest part of the venturi, but When the furnace consumption is cut down to a minimum, the chimney pull is counteracted by air from the nozzles 50. Valves 13, 41 and 53 (normally closed) supplying gas, air to the venturi jets and air to the nozzles 50 respectively are linked to the known control device 19 which is connected to temperature responsive means 20 disposed inside the furnace. When the gas valve 13 is closed to a minimum, the air valve 41 is completely closed and the valve 53 opened, supplying air to the nozzles 50, the effect being to restrict but not to stop completely the draught through the conduits 31. Specification 602,919, [Group XII], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US630962XA | 1945-03-27 | 1945-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB630962A true GB630962A (en) | 1949-10-25 |
Family
ID=22046902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6975/46A Expired GB630962A (en) | 1945-03-27 | 1946-03-06 | Improvements in or relating to a heat treating furnace |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB630962A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1067836B (en) * | 1954-08-12 | 1959-10-29 | Siemens Ag | Process for pressure control for ovens, especially for iron and steel processing, and arrangement for implementation |
-
1946
- 1946-03-06 GB GB6975/46A patent/GB630962A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1067836B (en) * | 1954-08-12 | 1959-10-29 | Siemens Ag | Process for pressure control for ovens, especially for iron and steel processing, and arrangement for implementation |
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