GB496684A - Improvements relating to the production of gases for use as atmospheres in furnaces for the heat-treatment of metals - Google Patents
Improvements relating to the production of gases for use as atmospheres in furnaces for the heat-treatment of metalsInfo
- Publication number
- GB496684A GB496684A GB1709737A GB1709737A GB496684A GB 496684 A GB496684 A GB 496684A GB 1709737 A GB1709737 A GB 1709737A GB 1709737 A GB1709737 A GB 1709737A GB 496684 A GB496684 A GB 496684A
- Authority
- GB
- United Kingdom
- Prior art keywords
- production
- atmospheres
- furnaces
- gases
- metals
- 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
- C21D1/76—Adjusting the composition of the atmosphere
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)
- Furnace Details (AREA)
Abstract
In the production of furnace atmosphere gases consisting mainly of nitrogen, hydrogen-containing fuels, such as hydrocarbon oils, coal gas and ammonia, are burnt with excess oxygen or air, and the products of combustion, preferably after removal of water vapour, are passed over carbon heated to a temperature of 800 DEG C. or over to convert the remaining oxygen to carbon monoxide. The process ensures that the resulting atmosphere gas contains no free hydrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1709737A GB496684A (en) | 1937-06-19 | 1937-06-19 | Improvements relating to the production of gases for use as atmospheres in furnaces for the heat-treatment of metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1709737A GB496684A (en) | 1937-06-19 | 1937-06-19 | Improvements relating to the production of gases for use as atmospheres in furnaces for the heat-treatment of metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB496684A true GB496684A (en) | 1938-12-05 |
Family
ID=10089187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1709737A Expired GB496684A (en) | 1937-06-19 | 1937-06-19 | Improvements relating to the production of gases for use as atmospheres in furnaces for the heat-treatment of metals |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB496684A (en) |
-
1937
- 1937-06-19 GB GB1709737A patent/GB496684A/en not_active Expired
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