GB1441758A - Device for establishing a furnace atmosphere for acting on workpieces during thermal treatment - Google Patents

Device for establishing a furnace atmosphere for acting on workpieces during thermal treatment

Info

Publication number
GB1441758A
GB1441758A GB4256973A GB4256973A GB1441758A GB 1441758 A GB1441758 A GB 1441758A GB 4256973 A GB4256973 A GB 4256973A GB 4256973 A GB4256973 A GB 4256973A GB 1441758 A GB1441758 A GB 1441758A
Authority
GB
United Kingdom
Prior art keywords
furnace
reaction chamber
establishing
acting
furnace atmosphere
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
Application number
GB4256973A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB1441758A publication Critical patent/GB1441758A/en
Expired legal-status Critical Current

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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere
    • C21D1/763—Adjusting the composition of the atmosphere using a catalyst

Abstract

1441758 Furnace atmospheres W GOHRING 11 Sept 1973 [16 Sept 1972] 42569/73 Heading F4B Apparatus for preparing a gaseous mixture suitable as a furnace atmosphere comprises a reaction chamber 3 surrounded by thermal insulation in which fuels, e.g. hydrocarbon-air or ammonia-air mixtures are heated by an electrical heater 4 to a temperature of from 750‹ to 1100‹ C. and then passed into a spaced furnace 1. Heating occurs in a thermally insulated tube 2 between the reaction chamber 3, Fig. 1 and furnace 1, which tube is at least partially heated by further heaters 4 in an opening in the wall 6 of the furnace, or the reaction chamber may be formed wholly within the wall and comprises an electrically heated catalytic heater.
GB4256973A 1972-09-16 1973-09-11 Device for establishing a furnace atmosphere for acting on workpieces during thermal treatment Expired GB1441758A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1353572A CH579757A5 (en) 1972-09-16 1972-09-16

Publications (1)

Publication Number Publication Date
GB1441758A true GB1441758A (en) 1976-07-07

Family

ID=4393264

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4256973A Expired GB1441758A (en) 1972-09-16 1973-09-11 Device for establishing a furnace atmosphere for acting on workpieces during thermal treatment

Country Status (10)

Country Link
US (1) US3917238A (en)
AT (1) AT337239B (en)
CH (1) CH579757A5 (en)
DD (1) DD107308A5 (en)
DE (1) DE2346287C2 (en)
ES (1) ES418741A1 (en)
FR (1) FR2213352B1 (en)
GB (1) GB1441758A (en)
IT (1) IT993200B (en)
SE (1) SE401935B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51117934A (en) * 1975-04-09 1976-10-16 Fujikoshi Kk Droppinggtype gas carburizing furnace
US4369031A (en) * 1981-09-15 1983-01-18 Thermco Products Corporation Gas control system for chemical vapor deposition system
US7033446B2 (en) * 2001-07-27 2006-04-25 Surface Combustion, Inc. Vacuum carburizing with unsaturated aromatic hydrocarbons
US6991687B2 (en) 2001-07-27 2006-01-31 Surface Combustion, Inc. Vacuum carburizing with napthene hydrocarbons
DE102009038598B4 (en) * 2009-08-26 2017-06-22 Ipsen International Gmbh Process and device for the treatment of process gases for heat treatment of metallic materials / workpieces in industrial furnaces

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2124573A (en) * 1936-10-21 1938-07-26 Carl I Hayes Enveloping atmosphere control
US2275106A (en) * 1939-02-20 1942-03-03 Carl I Hayes Circulation of heat treatment atmospheres
DE752976C (en) * 1939-04-29 1953-02-02 Westinghouse Electric & Mfg Co Gas generator for the production of non-decarburizing gases
US2254047A (en) * 1939-06-23 1941-08-26 Westinghouse Electric & Mfg Co Built-in gas generator for industrial furnaces
FR1042529A (en) * 1951-10-02 1953-11-02 Renault Process for obtaining a neutral atmosphere for the heat treatment of metals
DE1433735B1 (en) * 1963-09-21 1969-09-04 Werner Goehring Process for achieving a furnace atmosphere with which an oxidation-free heat treatment of workpieces made of steel can be carried out while at the same time influencing the carbon content
US3644099A (en) * 1969-09-15 1972-02-22 Holcroft & Co Gas atmosphere generating means for heat-treating furnaces
US3632979A (en) * 1970-05-25 1972-01-04 Edward J Mccrink Converter for producing controlled atmosphere for heat treating
FR2112825A5 (en) * 1970-11-10 1972-06-23 Inst Elektrotermicheskogo Obor Atmosphere forming cell - permits simultaneous prod of two distinct atmospheres

Also Published As

Publication number Publication date
SE401935B (en) 1978-06-05
AT337239B (en) 1977-06-27
DE2346287C2 (en) 1984-06-14
US3917238A (en) 1975-11-04
DD107308A5 (en) 1974-07-20
DE2346287A1 (en) 1974-05-02
IT993200B (en) 1975-09-30
CH579757A5 (en) 1976-09-15
ATA753373A (en) 1976-10-15
ES418741A1 (en) 1976-06-16
FR2213352A1 (en) 1974-08-02
FR2213352B1 (en) 1976-05-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930910