GB464697A - Improvements in or relating to the thermal treatment of light metals and light metal alloys - Google Patents
Improvements in or relating to the thermal treatment of light metals and light metal alloysInfo
- Publication number
- GB464697A GB464697A GB29419/35A GB2941935A GB464697A GB 464697 A GB464697 A GB 464697A GB 29419/35 A GB29419/35 A GB 29419/35A GB 2941935 A GB2941935 A GB 2941935A GB 464697 A GB464697 A GB 464697A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bath
- basic
- aluminium
- metals
- halides
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Light metals and alloys, particularly aluminium and its alloys are heat-treated in molten baths which contain as their main constituent alkali halides or a mixture of a plurality of alkali halides and basic-reacting substances in such quantities, not exceeding 30 per cent, that the metals &c. are protected from attack by the halides. The bath may also contain one or more alkaline earth halides. As basic-reacting compounds the oxides, carbonates or hydroxides of alkaline or alkaline earth metals, basic-reacting phosphates, tungstates or borates as well as oxides such as aluminium or magnesium oxide may be used, or compounds such as aluminium or magnesium oxide may be produced in the bath from the corresponding light metal or alloy, the formation of the basic-reacting compounds being promoted by temporarily raising the bath temperature, blowing oxygen, e.g. as air through the bath or adding peroxides such as calcium peroxide. The temperatures used are 300-550 DEG C. In an example aluminium is treated in a bath having a temperature of 530 DEG C. and containing 48 parts of calcium chloride, 31 parts of barium chloride and 21 parts of sodium chloride to which is added 10 per cent of barium carbonate. Specification 237,337, [Class 72], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE464697X | 1934-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB464697A true GB464697A (en) | 1937-04-23 |
Family
ID=6540293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB29419/35A Expired GB464697A (en) | 1934-10-31 | 1935-10-24 | Improvements in or relating to the thermal treatment of light metals and light metal alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB464697A (en) |
-
1935
- 1935-10-24 GB GB29419/35A patent/GB464697A/en not_active Expired
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