GB494340A - Improvements in, or relating to, annealing and other heat-treatment furnaces - Google Patents
Improvements in, or relating to, annealing and other heat-treatment furnacesInfo
- Publication number
- GB494340A GB494340A GB844137A GB844137A GB494340A GB 494340 A GB494340 A GB 494340A GB 844137 A GB844137 A GB 844137A GB 844137 A GB844137 A GB 844137A GB 494340 A GB494340 A GB 494340A
- Authority
- GB
- United Kingdom
- Prior art keywords
- chamber
- annealing
- gas
- impurities
- heat
- 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
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)
- Crucibles And Fluidized-Bed Furnaces (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
494,340. Bright - annealing furnaces. BIRMINGHAM ELECTRIC FURNACES, Ltd., LOBLEY, A. G., and ROBIETTE, A. G. E. March 22, 1937, No. 8441. [Class 51 (ii)] Protective gas under pressure is circulated through the heat-treatment chamber a and a previously heated porous refractory lining a<1> of an annealing furnace to expel impurities from the latter, and is purified in a heated chamber g<1> where the impurities react with reducing constituents of the gas and are then absorbed by material in a drying or de-contaminating chamber g<2> which may itself absorb unburnt impurities in the gas and be used without the chamber g<1>. The lining a<1> is enclosed in a perforated shell a<2> and spaced from an outer metal casing d connected by pipes with the chambers gl, g<2> and a pump f<3>. The protective gas is produced by incomplete combustion in the chamber g<1> of air and gas supplied through pipes h<1> and its pressure in the chamber a prevents inflow of air during annealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB844137A GB494340A (en) | 1937-03-22 | 1937-03-22 | Improvements in, or relating to, annealing and other heat-treatment furnaces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB844137A GB494340A (en) | 1937-03-22 | 1937-03-22 | Improvements in, or relating to, annealing and other heat-treatment furnaces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB494340A true GB494340A (en) | 1938-10-24 |
Family
ID=9852539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB844137A Expired GB494340A (en) | 1937-03-22 | 1937-03-22 | Improvements in, or relating to, annealing and other heat-treatment furnaces |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB494340A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3025144A (en) * | 1959-08-31 | 1962-03-13 | Stauffer Chemical Co | Carbon disulfide retort |
-
1937
- 1937-03-22 GB GB844137A patent/GB494340A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3025144A (en) * | 1959-08-31 | 1962-03-13 | Stauffer Chemical Co | Carbon disulfide retort |
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