GB508061A - Improvements in or relating to drum furnaces for the bright annealing of metal articles - Google Patents
Improvements in or relating to drum furnaces for the bright annealing of metal articlesInfo
- Publication number
- GB508061A GB508061A GB35139/37A GB3513937A GB508061A GB 508061 A GB508061 A GB 508061A GB 35139/37 A GB35139/37 A GB 35139/37A GB 3513937 A GB3513937 A GB 3513937A GB 508061 A GB508061 A GB 508061A
- Authority
- GB
- United Kingdom
- Prior art keywords
- furnace
- goods
- zone
- drums
- cooling
- 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
- C21D9/0031—Rotary furnaces with horizontal or slightly inclined axis
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)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
508,061. Rotary furnaces. DEUTSCHE WAFFEN-UND MUNITIONSFABRIKEN AKT.-GES. Dec. 18, 1937, Nos. 35139 and 35140. Convention dates, Dec. 19, 1936, and July 16, 1937. [Class 51 (ii)] A rotary furnace for the bright annealing of metals in a protective atmosphere comprises concentric drums through which the goods pass successively, the heating-zone being at that end of the furnace at which the direction of travel of the goods is reversed, while the remainder of the length of the drums constitutes a zone 4 for the interchange of heat between the incoming and outgoing goods and a cooling- zone 12. As shown, the furnace is inclined and the goods from the supply 2 are raised through the inner drum by a screw 3. The inner drum may be perforated, and the annular space between the drums is divided by partitions 6 having offset openings or formed with passages leading from one space to the next. The lower end of the furnace has a cooling- jacket 21 and final cooling of the goods may be effected outside. Protective gas is supplied at the upper end of the furnace, e.g. through the hollow shaft, and escapes at the charging and discharging openings. Heating is effected by exchangeable electric elements 8.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE508061X | 1936-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB508061A true GB508061A (en) | 1939-06-19 |
Family
ID=6546894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35139/37A Expired GB508061A (en) | 1936-12-19 | 1937-12-18 | Improvements in or relating to drum furnaces for the bright annealing of metal articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB508061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4038021A (en) * | 1976-04-05 | 1977-07-26 | Benson John O | Continuous grain drier and method |
-
1937
- 1937-12-18 GB GB35139/37A patent/GB508061A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4038021A (en) * | 1976-04-05 | 1977-07-26 | Benson John O | Continuous grain drier and method |
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