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GB1358665A - Method of forming compacts - Google Patents

Method of forming compacts

Info

Publication number
GB1358665A
GB1358665A GB3541872A GB3541872A GB1358665A GB 1358665 A GB1358665 A GB 1358665A GB 3541872 A GB3541872 A GB 3541872A GB 3541872 A GB3541872 A GB 3541872A GB 1358665 A GB1358665 A GB 1358665A
Authority
GB
United Kingdom
Prior art keywords
pressure
isostatic
graph
axial
batch
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
GB3541872A
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.)
Koerner R M
Original Assignee
Koerner R M
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 Koerner R M filed Critical Koerner R M
Publication of GB1358665A publication Critical patent/GB1358665A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B30B11/001—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a flexible element, e.g. diaphragm, urged by fluid pressure; Isostatic presses
    • 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
    • B22F3/02—Compacting only
    • 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
    • B30B11/007—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a plurality of pressing members working in different directions

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Powder Metallurgy (AREA)

Abstract

1358665 Powdered metal compacts R M KOERNER 28 July 1972 [25 Jan 1972] 35418/72 Heading B5A Green compacts are formed by placing a batch 9 of particulate material in an isostatic mould 3, applying an isostatic pressure # 3 along all but an axis of the mould and applying an axial pressure # 1 which exceeds the isostatic pressure # 3 along the axis so as to produce a controlled stress within the batch while not exceeding the failure shear. The isostatic pressure # 3 may be applied by passing pressure air through a line 5. The axial pressure # 1 may be applied by a load piston 10, 12. The isostatic and axial pressures may be applied simultaneously (graph 1, Fig. 9) or sequentially (graph 2, Fig. 9). The full isostatic pressure # 3 may be applied initially and then the axial pressure # 1 (graph 3, Fig. 9). The isostatic pressure # 3 may be increased to the ultimate normal stress and then reduced at the rate at which the axial pressure # 1 is applied (graph 4). Finally the isostatic pressure # 3 may be raised above the final normal stress and then reduced at a rate greater than the rate at which the axial pressure # 1 is increased (graph 5). An air bleed 7 is provided to allow air within the batch 9 to escape. The particulate material may be non- metallic or metallic, e.g. Al, Ni, Cu, W or sponge, irregular or spherical Fe powder. The green compacts may be subsequently sintered, e.g. Fe in dry H 2 at 1000‹ F. for 1 hr.
GB3541872A 1972-01-25 1972-07-28 Method of forming compacts Expired GB1358665A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22059672A 1972-01-25 1972-01-25

Publications (1)

Publication Number Publication Date
GB1358665A true GB1358665A (en) 1974-07-03

Family

ID=22824154

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3541872A Expired GB1358665A (en) 1972-01-25 1972-07-28 Method of forming compacts

Country Status (4)

Country Link
JP (1) JPS4885405A (en)
DE (1) DE2230849A1 (en)
FR (1) FR2169024A1 (en)
GB (1) GB1358665A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128925A (en) * 1982-10-16 1984-05-10 Laeis Werke Ag Moulding ceramics
CN115007859A (en) * 2022-06-23 2022-09-06 宁波京甬磁业有限公司 Forming orientation process of neodymium iron boron magnet
CN115921871A (en) * 2022-12-15 2023-04-07 合肥矽格玛应用材料有限公司 Production method of modified copper bonding wire

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52460A (en) * 1975-06-23 1977-01-05 Sony Corp Device for detecting granular level in a fluidized bed
SE8005474L (en) * 1979-08-10 1981-02-11 British Nuclear Fuels Ltd SET FOR PRESSURE OF CERAMIC POWDER

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128925A (en) * 1982-10-16 1984-05-10 Laeis Werke Ag Moulding ceramics
CN115007859A (en) * 2022-06-23 2022-09-06 宁波京甬磁业有限公司 Forming orientation process of neodymium iron boron magnet
CN115007859B (en) * 2022-06-23 2024-05-03 宁波京甬磁业有限公司 Molding orientation process of neodymium-iron-boron magnet
CN115921871A (en) * 2022-12-15 2023-04-07 合肥矽格玛应用材料有限公司 Production method of modified copper bonding wire

Also Published As

Publication number Publication date
FR2169024A1 (en) 1973-09-07
DE2230849A1 (en) 1973-08-02
JPS4885405A (en) 1973-11-13

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees