GB584471A - Improvements in or relating to the heat treatment of alloys - Google Patents
Improvements in or relating to the heat treatment of alloysInfo
- Publication number
- GB584471A GB584471A GB2110644A GB2110644A GB584471A GB 584471 A GB584471 A GB 584471A GB 2110644 A GB2110644 A GB 2110644A GB 2110644 A GB2110644 A GB 2110644A GB 584471 A GB584471 A GB 584471A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- metals
- agent
- alloy
- protective
- 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
- C22F1/008—Using a protective surface layer
-
- 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)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Powder Metallurgy (AREA)
Abstract
To protect metals and alloys during heat-treatment under conditions liable to result in oxidation, scaling and/or other deterioration of the surface of the metal such as decarburization, a protective agent consisting of one or more alkaline earth metals, magnesium or one or more of the alkali metals (other than lithium) is arranged adjacent to or in the vicinity of the metal or alloy during the heating. The metal may be enclosed in a sealed container with the protective agent packed round it or the agent may be placed in a separate receptacle secured to the inner wall of the container or separated from the metal &c. by an interposed layer of wire gauze or other suitable pervious material. The agent may be used in the form of a granular or finely divided mass and may be mixed with an inert filler such as aluminium oxide or lime. The agent may comprise two or more of the metals referred to above alloyed with one other such as a 60/40 or 85/15 magnesium calcium alloy or one of the protective metals alloyed with a cheaper metal such as a 60/40 copper calcium alloy. In an example, rods of a copper nickel manganese alloy are packed in steel containers with a quantity of 60/40 calcium alloy in the form of granules passing a 1/8 inch sieve and precipitation-hardened by heating at 400-500 DEG C. for periods up to 8 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2110644A GB584471A (en) | 1944-10-30 | 1944-10-30 | Improvements in or relating to the heat treatment of alloys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2110644A GB584471A (en) | 1944-10-30 | 1944-10-30 | Improvements in or relating to the heat treatment of alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB584471A true GB584471A (en) | 1947-01-15 |
Family
ID=10157329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2110644A Expired GB584471A (en) | 1944-10-30 | 1944-10-30 | Improvements in or relating to the heat treatment of alloys |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB584471A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS512888B1 (en) * | 1971-06-24 | 1976-01-29 |
-
1944
- 1944-10-30 GB GB2110644A patent/GB584471A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS512888B1 (en) * | 1971-06-24 | 1976-01-29 |
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