GB732101A - Improvements in methods of and means for the heat treatment of solid bodies - Google Patents
Improvements in methods of and means for the heat treatment of solid bodiesInfo
- Publication number
- GB732101A GB732101A GB423450A GB423450A GB732101A GB 732101 A GB732101 A GB 732101A GB 423450 A GB423450 A GB 423450A GB 423450 A GB423450 A GB 423450A GB 732101 A GB732101 A GB 732101A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fluidized
- gas
- aluminium
- granular material
- heated
- 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
- C21D1/53—Heating in fluidised beds
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)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
A solid body, e.g. of metal or glass, is heat treated by immersion in a fluidized powdered or granular material containing a source at a different temperature from that of the body, then removal from the material after a pre-determined transmission of heat has taken place. A layer of granular material is fluidized in an iron tank by streams of compressed gas escaping upwards from the tank bottom which is porous, being of porcelain or brick or of wire cloth which has been subjected to a rolling operation as in Specification 709,265, [Group XXX]. Heat is supplied by electric resistance heaters at least partly immersed in the fluidized bed and the gas may be pre-heated. If the gas is selected to provide a controlled atmosphere it may be circulated in a closed path. The granular material is alumina or ground crystalline material such as calcium fluoride (fluorspar), silica or sand and is of 30-100 microns particle size. A metal such as an aluminium-manganese alloy, to be annealed is plunged and suspended in the fluidized material maintained at 450 DEG C. The vertical walls of the tank may be heated or cooled. By use of this method a body may be heated for hot-working, for relieving stresses or for modifying its structure and constitution or it may be cooled or quenched. For example, cold-worked brass or copper is annealed, aluminium alloys are solution treated, aluminium is degassed, steels are carburized and carbon steels are quenched p from above 760 DEG C. Aluminium-magnesium-silicon alloy, H.S.10, is heat treated and, after water-quenching, aged in fluidized material. The gas may react with the substance of the treated body and the granular material may be such that it acts chemically on the body in the presence of a selected gas or vapour introduced with, or as, the fluidizing medium. Hydrogen may be used and nitralloy steel may be nitrided in alumina fluidized by ammonia.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB423450A GB732101A (en) | 1950-01-06 | 1950-01-06 | Improvements in methods of and means for the heat treatment of solid bodies |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB423450A GB732101A (en) | 1950-01-06 | 1950-01-06 | Improvements in methods of and means for the heat treatment of solid bodies |
Publications (1)
Publication Number | Publication Date |
---|---|
GB732101A true GB732101A (en) | 1955-06-22 |
Family
ID=34355739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB423450A Expired GB732101A (en) | 1950-01-06 | 1950-01-06 | Improvements in methods of and means for the heat treatment of solid bodies |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB732101A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3096221A (en) * | 1959-09-15 | 1963-07-02 | To A Kako Kabushiki Kaisha | Method of quick nitrification in which fluidized particles are employed |
US3099589A (en) * | 1959-09-15 | 1963-07-30 | To A Kako Kabushiki Kaisha | Method of cementation in which fluidized carbon powder particles are employed |
US3197328A (en) * | 1961-11-15 | 1965-07-27 | Boeing Co | Fluidized bed generated by vibratory means |
US3250521A (en) * | 1964-11-06 | 1966-05-10 | Gen Electric | Apparatus for decoating utilizing a heated fluidized bed |
US3342649A (en) * | 1963-10-29 | 1967-09-19 | Davy & United Eng Co Ltd | Heat treatment of metallic strip material |
FR2538092A1 (en) * | 1982-12-20 | 1984-06-22 | Procedyne Corp | FLUIDIZED BED METHOD AND APPARATUS FOR TREATING METALS IN A CONTROLLED ATMOSPHERE |
US5405428A (en) * | 1990-07-20 | 1995-04-11 | Alcan International Limited | Decontamination and/or surface treatment of metals |
WO2012156616A1 (en) * | 2011-05-16 | 2012-11-22 | Solios Environnement | Process and device for limiting the emission of gaseous pollutants from anode butts |
DE102012015844A1 (en) * | 2012-08-08 | 2014-02-13 | Audi Ag | Method for performing heat treatment of thin walled casting component e.g. die-cast structural component for motor car, involves subjecting embedded component in static sand bed to heat treatment process for given residence time |
-
1950
- 1950-01-06 GB GB423450A patent/GB732101A/en not_active Expired
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3096221A (en) * | 1959-09-15 | 1963-07-02 | To A Kako Kabushiki Kaisha | Method of quick nitrification in which fluidized particles are employed |
US3099589A (en) * | 1959-09-15 | 1963-07-30 | To A Kako Kabushiki Kaisha | Method of cementation in which fluidized carbon powder particles are employed |
US3197328A (en) * | 1961-11-15 | 1965-07-27 | Boeing Co | Fluidized bed generated by vibratory means |
US3342649A (en) * | 1963-10-29 | 1967-09-19 | Davy & United Eng Co Ltd | Heat treatment of metallic strip material |
US3250521A (en) * | 1964-11-06 | 1966-05-10 | Gen Electric | Apparatus for decoating utilizing a heated fluidized bed |
GB2132230A (en) * | 1982-12-20 | 1984-07-04 | Procedyne Corp | Method and apparatus for metal treatment |
FR2538092A1 (en) * | 1982-12-20 | 1984-06-22 | Procedyne Corp | FLUIDIZED BED METHOD AND APPARATUS FOR TREATING METALS IN A CONTROLLED ATMOSPHERE |
US5405428A (en) * | 1990-07-20 | 1995-04-11 | Alcan International Limited | Decontamination and/or surface treatment of metals |
WO2012156616A1 (en) * | 2011-05-16 | 2012-11-22 | Solios Environnement | Process and device for limiting the emission of gaseous pollutants from anode butts |
FR2975405A1 (en) * | 2011-05-16 | 2012-11-23 | Solios Environnement | METHOD AND DEVICE FOR LIMITING EMISSIONS OF GASEOUS POLLUTANTS BY ANODE MEGOTS |
CN103597125A (en) * | 2011-05-16 | 2014-02-19 | 索里斯环境公司 | Process and device for limiting the emission of gaseous pollutants from anode butts |
CN103597125B (en) * | 2011-05-16 | 2016-04-27 | 索里斯环境公司 | The method of discharging for the gas pollutant limited from anode scrap and equipment thereof |
DE102012015844A1 (en) * | 2012-08-08 | 2014-02-13 | Audi Ag | Method for performing heat treatment of thin walled casting component e.g. die-cast structural component for motor car, involves subjecting embedded component in static sand bed to heat treatment process for given residence time |
DE102012015844B4 (en) * | 2012-08-08 | 2016-07-21 | Audi Ag | Process for the heat treatment of components |
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