CH548811A - Two stage metal powder compacting - includes high kinetic energy second stage pressing - Google Patents

Two stage metal powder compacting - includes high kinetic energy second stage pressing

Info

Publication number
CH548811A
CH548811A CH1178872A CH1178872A CH548811A CH 548811 A CH548811 A CH 548811A CH 1178872 A CH1178872 A CH 1178872A CH 1178872 A CH1178872 A CH 1178872A CH 548811 A CH548811 A CH 548811A
Authority
CH
Switzerland
Prior art keywords
stage
kinetic energy
punch
pressing
metal powder
Prior art date
Application number
CH1178872A
Other languages
Italian (it)
Original Assignee
Olivetti & Co Spa
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 Olivetti & Co Spa filed Critical Olivetti & Co Spa
Publication of CH548811A publication Critical patent/CH548811A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/42—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by magnetic means, e.g. electromagnetic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space
    • B30B11/04—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space co-operating with a fixed mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C2043/3272—Component parts, details or accessories; Auxiliary operations driving means
    • B29C2043/3283—Component parts, details or accessories; Auxiliary operations driving means for moving moulds or mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C2043/3272—Component parts, details or accessories; Auxiliary operations driving means
    • B29C2043/3283—Component parts, details or accessories; Auxiliary operations driving means for moving moulds or mould parts
    • B29C2043/3288—Component parts, details or accessories; Auxiliary operations driving means for moving moulds or mould parts using cam drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C2043/3676—Moulds for making articles of definite length, i.e. discrete articles moulds mounted on rotating supporting constuctions
    • B29C2043/3689—Moulds for making articles of definite length, i.e. discrete articles moulds mounted on rotating supporting constuctions on a support table, e.g. flat disk-like tables having moulds on the periphery

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Powder Metallurgy (AREA)

Abstract

The first stage consists of pre-compacting of the powder in the die by a slow pressing action of the punch, following which the punch is momentarily retracted and driven back into the die at high speed to attain a high kinetic energy causing additional compacting of the powder beyond its prepressed density. The high speed pressing is carried out by means of an electrodynamic unit comprising a condenser, the discharge of which feeds a coil, which acts on a plate carrying the punch. The process yields high density powder metallurgy products. It is intended for ferrous materials.
CH1178872A 1971-08-10 1972-08-09 Two stage metal powder compacting - includes high kinetic energy second stage pressing CH548811A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6988571 1971-08-10

Publications (1)

Publication Number Publication Date
CH548811A true CH548811A (en) 1974-05-15

Family

ID=11313025

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1178872A CH548811A (en) 1971-08-10 1972-08-09 Two stage metal powder compacting - includes high kinetic energy second stage pressing

Country Status (1)

Country Link
CH (1) CH548811A (en)

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Legal Events

Date Code Title Description
PL Patent ceased