GB622652A - Improvements in or relating to heat exchange apparatus and to processes for the manufacture thereof - Google Patents

Improvements in or relating to heat exchange apparatus and to processes for the manufacture thereof

Info

Publication number
GB622652A
GB622652A GB1310746A GB1310746A GB622652A GB 622652 A GB622652 A GB 622652A GB 1310746 A GB1310746 A GB 1310746A GB 1310746 A GB1310746 A GB 1310746A GB 622652 A GB622652 A GB 622652A
Authority
GB
United Kingdom
Prior art keywords
members
heat exchange
steel
treatment
manufacture
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
GB1310746A
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.)
Birmingham Small Arms Co Ltd
Original Assignee
Birmingham Small Arms Co Ltd
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 Birmingham Small Arms Co Ltd filed Critical Birmingham Small Arms Co Ltd
Priority to GB1310746A priority Critical patent/GB622652A/en
Publication of GB622652A publication Critical patent/GB622652A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/38—Selection of media, e.g. special atmospheres for surrounding the working area
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces

Abstract

In a process for the manufacture of heat exchange apparatus, a plurality of steel members and brazing alloy or solder are assembled and maintained in position and one or more of the elements chromium, silicon, titanium, zirconium, vanadium, niobium, tantalum, molybdenum, tungsten, manganese nickel and cobalt is diffused into the steel by treatment with a halide of the diffusing element, the temperature of the treatment being such that the brazing alloy or solder unites the members of the heat exchanger. The heat exchanger members may be of mild steel or austenitic steel and may be held together in a jig during the diffusion of chromium by treatment with chromous chloride at 900-1100 DEG C. in a reducing atmosphere such as hydrogen. The heat exchange members may be surrounded with porous non-destructive material which has been impregnated with a halide of the coating element.
GB1310746A 1946-05-01 1946-05-01 Improvements in or relating to heat exchange apparatus and to processes for the manufacture thereof Expired GB622652A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1310746A GB622652A (en) 1946-05-01 1946-05-01 Improvements in or relating to heat exchange apparatus and to processes for the manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1310746A GB622652A (en) 1946-05-01 1946-05-01 Improvements in or relating to heat exchange apparatus and to processes for the manufacture thereof

Publications (1)

Publication Number Publication Date
GB622652A true GB622652A (en) 1949-05-05

Family

ID=10016951

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1310746A Expired GB622652A (en) 1946-05-01 1946-05-01 Improvements in or relating to heat exchange apparatus and to processes for the manufacture thereof

Country Status (1)

Country Link
GB (1) GB622652A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3637320A (en) * 1968-12-31 1972-01-25 Texas Instruments Inc Coating for assembly of parts
EP1132707A2 (en) * 2000-03-09 2001-09-12 GEA Canzler GmbH Heat exchange element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3637320A (en) * 1968-12-31 1972-01-25 Texas Instruments Inc Coating for assembly of parts
EP1132707A2 (en) * 2000-03-09 2001-09-12 GEA Canzler GmbH Heat exchange element
EP1132707A3 (en) * 2000-03-09 2004-02-04 GEA Canzler GmbH Heat exchange element

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