GB512771A - Improvements in heat treatment processes employing fused solids as heat transfer media - Google Patents
Improvements in heat treatment processes employing fused solids as heat transfer mediaInfo
- Publication number
- GB512771A GB512771A GB33642/37A GB3364237A GB512771A GB 512771 A GB512771 A GB 512771A GB 33642/37 A GB33642/37 A GB 33642/37A GB 3364237 A GB3364237 A GB 3364237A GB 512771 A GB512771 A GB 512771A
- Authority
- GB
- United Kingdom
- Prior art keywords
- metal
- fused
- heating
- tin
- refractory
- 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
- C21D1/48—Metal 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)
- Furnace Details (AREA)
- Crucibles And Fluidized-Bed Furnaces (AREA)
Abstract
512,771. Heating systems and apparatus. SEAILLES, J. C., and SYLVANY, R. Dec. 4, 1937, No. 33642. Void. Convention date, Dec. 4, 1936. [Class 64 (ii)] Apparatus such as tunnel ovens are heated by. direct radiation from the surface of a fused solid. The heating medium may circulate by thermo-siphon, or by impulses derived from the induction of electric currents in it, or by injection of gases, or by the movements of a refractory body dipping into it. The medium, e.g., a metal, alloy, or a salt, may be fused by a burner or electric arc. If the furnace atmosphere is oxidising, the metal may be one whose oxide is easily reducible, and a reducing agent may be present in the metal-heating chamber. Cast iron may be used since the contained carbon is oxidised before the metal and it may be recarbonised in the heating zone. To avoid the presence of carbon gases, copper, tin or bismuth may be used. The combustion products of a single furnace may be used, at successively lower temperatures, to fuse cast iron, tin, and bismuth-lead-tin alloys. The metal 4 is fused by an electric arc employing electrodes 5, 6. The metal circulates through a heating chamber 1 in a stream 9, 10 around a refractory block 2. Leakage of metal is prevented by employing walls of sufficient thickness to ensure solidification of the metal before reaching the outer side, or by cooling passages 11. The surface of the molten metal may be protected by a layer of slag or a refractory slab, and a neutral gas may circulate between the metal and the slab.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
LU512771X | 1936-12-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB512771A true GB512771A (en) | 1939-09-25 |
Family
ID=19732815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33642/37A Expired GB512771A (en) | 1936-12-04 | 1937-12-04 | Improvements in heat treatment processes employing fused solids as heat transfer media |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB512771A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2000078C2 (en) * | 2006-05-19 | 2007-11-20 | Gerrit Clemens Van Uitert | Nuclear reactor. |
-
1937
- 1937-12-04 GB GB33642/37A patent/GB512771A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2000078C2 (en) * | 2006-05-19 | 2007-11-20 | Gerrit Clemens Van Uitert | Nuclear reactor. |
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