GB234779A - - Google Patents
Info
- Publication number
- GB234779A GB234779A GB7581/25A GB758125A GB234779A GB 234779 A GB234779 A GB 234779A GB 7581/25 A GB7581/25 A GB 7581/25A GB 758125 A GB758125 A GB 758125A GB 234779 A GB234779 A GB 234779A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipe
- liquid
- container
- trough
- annealing
- 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
- 239000007788 liquid Substances 0.000 abstract 10
- 238000000137 annealing Methods 0.000 abstract 3
- 239000007789 gas Substances 0.000 abstract 3
- 239000011261 inert gas Substances 0.000 abstract 3
- 238000001816 cooling Methods 0.000 abstract 1
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000000266 injurious effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
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
-
- 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
- C21D1/84—Controlled slow cooling
Abstract
234,779. Giesecke, F. May 30, 1924, [Convention date]. Annealing. - In a device for annealing, in which the annealing pot is surrounded by an inert gas during the cooling period, the gas is maintained at a particular vacuum in order that the annealed material will come into contact as little as possible with injurious gases. The pot a is supported in a container b provided with a cover c closed by a liquid seal formed by a liquid d in a trough e. A tank g in the trough e contains the liquid for producing the inert gas, this liquid passing through a container n having means to control the supply to a pipe h having a nozzle i arranged above an evaporating pan k and below a hood m. The container n is provided with a float p actuating a needle valve o, the liquid space of the container communicating with a pipe r into which the end of the pipe h projects. Liquid can only pass from the container n into the pipe h when the vacuum in the pipe is of such magnitude that the liquid in the pipe r rises above the top of the pipe h whence it flows to the pan and is evaporated. The float p may be depressed by a spring-actuated rod x so that liquid may flow into the pipe h independently of the amount of vacuum in the latter. Water is supplied to the liquid seal in the trough e by a pipe y which passes under the cover c. In a modification for controlling the supply of inert gas from a gas supply pipe, the end of the pipe is immersed in a sealing liquid contained in a separate container, the pipe h being then connected to the top of the container.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1674431X | 1924-05-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB234779A true GB234779A (en) | 1925-12-10 |
Family
ID=7738983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7581/25A Expired GB234779A (en) | 1924-05-30 | 1925-03-20 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1674431A (en) |
| GB (1) | GB234779A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2818075A (en) * | 1950-09-05 | 1957-12-31 | Kolene Corp | Apparatus for cleaning metal strip continuously |
| US2799604A (en) * | 1950-11-28 | 1957-07-16 | Metallurg Processes Co | Method of protecting surfaces of hot metallic bodies against oxidation |
-
1925
- 1925-03-20 GB GB7581/25A patent/GB234779A/en not_active Expired
- 1925-04-21 US US24716A patent/US1674431A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1674431A (en) | 1928-06-19 |
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