GB518089A - Improvements in and relating to the production of malleable iron - Google Patents
Improvements in and relating to the production of malleable ironInfo
- Publication number
- GB518089A GB518089A GB2400138A GB2400138A GB518089A GB 518089 A GB518089 A GB 518089A GB 2400138 A GB2400138 A GB 2400138A GB 2400138 A GB2400138 A GB 2400138A GB 518089 A GB518089 A GB 518089A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- iron
- temperature
- flue gas
- production
- 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
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
518,089. Malleable iron. BRITISH FURNACES, Ltd. (Surface Combustion Corporation). Aug. 15, 1938, No. 24001. [Class 72] In the production of malleable iron in which the iron is first heated up to a temperature above the critical, e.g., 1,600-1,750‹F., held at that temperature for a sufficient time to bring about the first stage annealing and then cooled to a temperature in the neighbourhood of the critical point and held there to produce graphitizing, the iron is surrounded during the heating up period and for an additional period of 1-10 hours during the first stage by an atmosphere of carburizing gas, and then completing the annealing for graphitizing in an atmosphere of decarburizing gas. The carburizing gas may comprise fuel gas such as natural or city gas or a mixture of such gas and flue gas and the decarburizing gas, flue gas. If the carbon content of the iron being treated is 2.3 per cent. of over, the composition of the flue gas is adjusted so that it contains a small proportion of oxygen in addition to carbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2400138A GB518089A (en) | 1938-08-15 | 1938-08-15 | Improvements in and relating to the production of malleable iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2400138A GB518089A (en) | 1938-08-15 | 1938-08-15 | Improvements in and relating to the production of malleable iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB518089A true GB518089A (en) | 1940-02-16 |
Family
ID=10204800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2400138A Expired GB518089A (en) | 1938-08-15 | 1938-08-15 | Improvements in and relating to the production of malleable iron |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB518089A (en) |
-
1938
- 1938-08-15 GB GB2400138A patent/GB518089A/en not_active Expired
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