GB352677A - Method of annealing or other heat treatment of metals, more especially iron and steel - Google Patents
Method of annealing or other heat treatment of metals, more especially iron and steelInfo
- Publication number
- GB352677A GB352677A GB1779630A GB1779630A GB352677A GB 352677 A GB352677 A GB 352677A GB 1779630 A GB1779630 A GB 1779630A GB 1779630 A GB1779630 A GB 1779630A GB 352677 A GB352677 A GB 352677A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gas
- annealing
- carbon
- heated
- layer
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
Abstract
352,677. Annealing ; cementation; gas generators. ELFSTROM, N. G., Fagersta, Sweden. June 10, 1930, No. 17796. [Class 72.] In the annealing or other heat treatment of metals, especially iron or steel, the annealing chamber is filled with a gas obtained by the passage of blast furnace gas, producer gas, or the like through a, layer of carbon heated electrically, so that the carbon content of the gas may be controlled. By increasing or decreasing the temperature of the carbon layer a gas is obtained which will carbonize or decarbonize the metal, or have no action on the metal. The gas may be preheated electrically before traversing the carbon layer. Air is supplied by pipe a to a gas producer A and the gas passes by pipe b to a regenerator B having a container m filled with charcoal and heated by a resistance coil c, the regenerated gas passing by a pipe d to the annealing chamber. The charcoal may be heated by an electric are. In Fig. 2 the gas generator and regenerator are combined in one structure, the lower part of the shaft m being surrounded by the heating coil c. The glowing layer'of carbon may be located in the annealing chamber which is electrically heated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1779630A GB352677A (en) | 1930-06-10 | 1930-06-10 | Method of annealing or other heat treatment of metals, more especially iron and steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1779630A GB352677A (en) | 1930-06-10 | 1930-06-10 | Method of annealing or other heat treatment of metals, more especially iron and steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB352677A true GB352677A (en) | 1931-07-16 |
Family
ID=10101358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1779630A Expired GB352677A (en) | 1930-06-10 | 1930-06-10 | Method of annealing or other heat treatment of metals, more especially iron and steel |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB352677A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105755426A (en) * | 2016-04-11 | 2016-07-13 | 西安赛福斯材料防护有限责任公司 | Device for oxy-carburizing of titanium metal |
-
1930
- 1930-06-10 GB GB1779630A patent/GB352677A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105755426A (en) * | 2016-04-11 | 2016-07-13 | 西安赛福斯材料防护有限责任公司 | Device for oxy-carburizing of titanium metal |
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