GB665292A - Improvements in or relating to filters - Google Patents

Improvements in or relating to filters

Info

Publication number
GB665292A
GB665292A GB158049A GB158049A GB665292A GB 665292 A GB665292 A GB 665292A GB 158049 A GB158049 A GB 158049A GB 158049 A GB158049 A GB 158049A GB 665292 A GB665292 A GB 665292A
Authority
GB
United Kingdom
Prior art keywords
metal
mass
rolled
sintered mass
powdered
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
GB158049A
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 GB158049A priority Critical patent/GB665292A/en
Publication of GB665292A publication Critical patent/GB665292A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2027—Metallic material
    • B01D39/2031—Metallic material the material being particulate
    • B01D39/2034—Metallic material the material being particulate sintered or bonded by inorganic agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Abstract

A filter element comprises a sintered mass of powdered metal, having such a high degree of porosity that it has insufficient strength to be used by itself, in association with perforated metal sheet, the perforations therein having been reduced in size by rolling. The rolled perforated metal sheets may form a container for or at least partially surround the sintered mass, or a rolled perforated metal sheet may be located within the body of the sintered mass. Alternatively the sintered mass may be contained in the rolled perforated metal sheet and at the same time other strengthening metal, preferably in sheet form, may be located within the body of the sintered mass. The strengthening metal may be rolled or unrolled perforated sheets expanded metal or wire gauze or cloth. The metal powders or the complete article may be given a surface diffusion treatment with chromium or other metals. In one method a mass of powdered metal is placed in a shaped hollow structure formed from rolled perforated metal sheet and is compacted without substantial distortion of the hollow structure. The whole is then inserted into a furnace to effect sintering of the powdered metal mass. In an alternative method powdered metal is put into a hollow supporting structure, a strengthening member of rolled perforated metal sheet is disposed on the surface of the powdered metal and covered with more powdered metal, the mass is compacted without substantial distortion of the strengthening member and the whole is then inserted into a furnace; after sintering the sintered mass is removed from the supporting structure.
GB158049A 1949-01-20 1949-01-20 Improvements in or relating to filters Expired GB665292A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB158049A GB665292A (en) 1949-01-20 1949-01-20 Improvements in or relating to filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB158049A GB665292A (en) 1949-01-20 1949-01-20 Improvements in or relating to filters

Publications (1)

Publication Number Publication Date
GB665292A true GB665292A (en) 1952-01-23

Family

ID=9724422

Family Applications (1)

Application Number Title Priority Date Filing Date
GB158049A Expired GB665292A (en) 1949-01-20 1949-01-20 Improvements in or relating to filters

Country Status (1)

Country Link
GB (1) GB665292A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5198118A (en) * 1984-04-30 1993-03-30 Kdf Fluid Treatment, Inc. Method for treating fluids
WO2002102492A1 (en) * 2001-06-18 2002-12-27 Hjs Fahrzeugtechnik Gmbh & Co. Exhaust gas particulate filter made of sintered metal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5198118A (en) * 1984-04-30 1993-03-30 Kdf Fluid Treatment, Inc. Method for treating fluids
WO2002102492A1 (en) * 2001-06-18 2002-12-27 Hjs Fahrzeugtechnik Gmbh & Co. Exhaust gas particulate filter made of sintered metal

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