GB357538A - Salt bath for annealing metal articles - Google Patents
Salt bath for annealing metal articlesInfo
- Publication number
- GB357538A GB357538A GB1873430A GB1873430A GB357538A GB 357538 A GB357538 A GB 357538A GB 1873430 A GB1873430 A GB 1873430A GB 1873430 A GB1873430 A GB 1873430A GB 357538 A GB357538 A GB 357538A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- potassium
- sodium
- metal articles
- salt bath
- 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
- C21D1/34—Methods of heating
- C21D1/44—Methods of heating in heat-treatment baths
- C21D1/46—Salt baths
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)
- Seasonings (AREA)
Abstract
A molten salt bath for annealing metal articles comprises common salt, sodium or potassium carbonate and potassium sulphate in such proportions that the proportion of sodium to potassium in the mixture is not greater than 1. Up to 6 per cent of borax or sodium phosphate and up to 10 per cent of the carbonates or oxide of alkaline-earth metals including magnesium may be added to the mixture. Examples of the bath are: 41 per cent of common salt, 48 per cent of potassium sulphate and 1 per cent of sodium carbonate; 30 per cent of common salt, 44 per cent of potassium sulphate, 21 per cent of potassium carbonate and 5 per cent of borax.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1873430A GB357538A (en) | 1930-06-19 | 1930-06-19 | Salt bath for annealing metal articles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1873430A GB357538A (en) | 1930-06-19 | 1930-06-19 | Salt bath for annealing metal articles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB357538A true GB357538A (en) | 1931-09-21 |
Family
ID=10117484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1873430A Expired GB357538A (en) | 1930-06-19 | 1930-06-19 | Salt bath for annealing metal articles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB357538A (en) |
-
1930
- 1930-06-19 GB GB1873430A patent/GB357538A/en not_active Expired
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