[go: up one dir, main page]

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

Similar Documents

Publication Publication Date Title
GB1538767A (en) Method for the controlled mechanical working of sintered porous powder metal shapes to effect surface and subsurface densification
GB665292A (en) Improvements in or relating to filters
ZA784114B (en) Sintered metal articles and processes for their manufacture
GB1421069A (en) Process for the production of porous tubes
SE7408756L (en) PROCEDURE FOR MANUFACTURE OF A METALLIC FILTER MATERIAL.
GB933825A (en) Improvements in or relating to sintered metal filters
JPS53145103A (en) Solid handling pump for use in changing fine particle or powdered fuel into gas and method of operating the pump
SE7804992L (en) METHOD OF PREPARING A FOREMAL OF METALLIC OR CERAMIC MATERIAL
GB944319A (en) Improvements in or relating to methods for processing filter tubes
GB2051639B (en) Thread forming of sintered porous metal shapes
Romaniv et al. Low-Cycle Fatigue of Iron and Steels in Gaseous H
GB817607A (en) Filter bodies for the separation of minute suspended particles and a method of producing the same
GB926911A (en) Improvements in or relating to porous metallic material
KR900011502A (en) Ceramic Filter for Filtration of Molten Metals
GB735472A (en) Improvements in or relating to the manufacture of titanium powder and massive bodies of titanium
GB1091807A (en) Improvements relating to methods of manufacturing wire or sheet from metals in powder form
Germel et al. Studies in Diffusion Pore Healing under Joule's Heating
JPS5336699A (en) Manufacturing method of sintering substance sheet of high density
GB1067208A (en) Improvements in process for producing shaped thin articles from metal powder
JPS5366808A (en) Preparation of pure iron and ferrous sintered material
GB921561A (en) Improvements relating to the production of electrodes
JPS5450407A (en) Preparation of sintered product
Hanejko P/M hot forming- Fundamentals and properties
Kastner et al. The Technology of Drawing and Limiting Deformation of the P/M\ Powder Metallurgy\ Silver--Nickel(10%) Material
JPS5336700A (en) Manufacturing method of sintering substance sheet of high density