BE764541A - Die and punch for compacting refractory powders - Google Patents

Die and punch for compacting refractory powders

Info

Publication number
BE764541A
BE764541A BE764541A BE764541A BE764541A BE 764541 A BE764541 A BE 764541A BE 764541 A BE764541 A BE 764541A BE 764541 A BE764541 A BE 764541A BE 764541 A BE764541 A BE 764541A
Authority
BE
Belgium
Prior art keywords
die
punch
compacting
powder
refractory powders
Prior art date
Application number
BE764541A
Other languages
French (fr)
Original Assignee
Lucas Industries 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
Priority claimed from FR6900994A external-priority patent/FR2000519A1/fr
Application filed by Lucas Industries Ltd filed Critical Lucas Industries Ltd
Publication of BE764541A publication Critical patent/BE764541A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • B28B3/025—Hot pressing, e.g. of ceramic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • C04B35/645—Pressure sintering

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Press-Shaping Or Shaping Using Conveyers (AREA)
  • Powder Metallurgy (AREA)

Abstract

Method of compacting and sintering refractory non-metal powders, e.g. SiN, to produce uniform defect free compacts. All adjacent mating surfaces of die components are coated with another fine refractory powder, e.g. BN, Al2O3 etc, prior to cold compression, such that pressure is transmitted indirectly through this powder. This results in improved axial pressure distribution and more homogenous end product.
BE764541A 1969-01-21 1971-03-19 Die and punch for compacting refractory powders BE764541A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6900994A FR2000519A1 (en) 1968-01-22 1969-01-21

Publications (1)

Publication Number Publication Date
BE764541A true BE764541A (en) 1971-08-16

Family

ID=9028029

Family Applications (1)

Application Number Title Priority Date Filing Date
BE764541A BE764541A (en) 1969-01-21 1971-03-19 Die and punch for compacting refractory powders

Country Status (1)

Country Link
BE (1) BE764541A (en)

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