GB1397818A - Method for manufacturing an object from iron-based alloys - Google Patents

Method for manufacturing an object from iron-based alloys

Info

Publication number
GB1397818A
GB1397818A GB4777872A GB4777872A GB1397818A GB 1397818 A GB1397818 A GB 1397818A GB 4777872 A GB4777872 A GB 4777872A GB 4777872 A GB4777872 A GB 4777872A GB 1397818 A GB1397818 A GB 1397818A
Authority
GB
United Kingdom
Prior art keywords
phase
iron
temperature
alloy
oct
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
GB4777872A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB1397818A publication Critical patent/GB1397818A/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
    • B30B11/002—Isostatic press chambers; Press stands therefor
    • 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
    • B22F3/15—Hot isostatic pressing
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • 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
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • 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
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

Landscapes

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

Abstract

1397818 Sintering iron-base-alloys ALLMANNA SVENSKA ELEKTRISKA AB 17 Oct 1972 [18 Oct 1971] 47778/72 Heading C7D Iron-base alloy powders are isostatically hot pressed in two stages, one stage at a temperature such that at least 25% of the alloy is α-phase, the other at a temperature such that the alloy is substantially completely in the γ-phase. It is preferred to effect the α-phase heating first, but if the reverse order is adopted an intermediate cooling stage to below the α-phase temperature is incorporated. Typical temperatures are 700- 950 C for the α-phase and 950-1225 C for the γ-phase heating. It is stated that such a process avoids the need for subsequent forging or rolling to obtain desired degree of compaction. Preferred apparatus is similar to that disclosed in Specification 1299043, and includes apparatus for an initial isostatic cold-pressing operation.
GB4777872A 1971-10-18 1972-10-17 Method for manufacturing an object from iron-based alloys Expired GB1397818A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE13138/71A SE357213B (en) 1971-10-18 1971-10-18

Publications (1)

Publication Number Publication Date
GB1397818A true GB1397818A (en) 1975-06-18

Family

ID=20296892

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4777872A Expired GB1397818A (en) 1971-10-18 1972-10-17 Method for manufacturing an object from iron-based alloys

Country Status (7)

Country Link
US (1) US3772009A (en)
JP (1) JPS5030005B2 (en)
CA (1) CA974382A (en)
DE (1) DE2250495C3 (en)
FR (1) FR2156788B1 (en)
GB (1) GB1397818A (en)
SE (1) SE357213B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1075886A2 (en) * 1999-08-13 2001-02-14 Crucible Materials Corporation Hot isostatic compacting of high alloy tool steel particles

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2255129B1 (en) * 1973-12-19 1980-11-07 Messerschmitt Boelkow Blohm
SE389812B (en) * 1974-05-07 1976-11-22 Asea Ab EQUIPMENT FOR HANDLING HIGH TEMPERATURE AND HIGH PRESSURE MATERIAL
US4244738A (en) * 1978-03-24 1981-01-13 Samuel Storchheim Method of and apparatus for hot pressing particulates
JPS5839707A (en) * 1981-09-01 1983-03-08 Kobe Steel Ltd High density sintering method for powder molding
US4492671A (en) * 1982-03-15 1985-01-08 Leland Stanford Junior University Method for consolidation of iron-based alloy powder by cyclic phase transformation under pressure
SE450469B (en) * 1985-02-19 1987-06-29 Asea Stal Ab KIT ON PREPARATION OF A FORM CARBON OF A HIGH CHROME IRON ALLOY
US4755119A (en) * 1987-03-26 1988-07-05 Kabushiki Kaisha Kobe Seiko Sho Multiple-container type cold isostatic press
US5976459A (en) * 1998-01-06 1999-11-02 Crucible Materials Corporation Method for compacting high alloy tool steel particles
US20050084914A1 (en) * 2003-09-15 2005-04-21 Foulkes J. G. Assays with primary cells

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA570345A (en) * 1959-02-10 G. G. Zapf Heinz Manufacture of sintered iron bodies
CA473625A (en) * 1951-05-15 Fiske Whitney Lyman Making products of iron or iron alloys
GB618293A (en) * 1946-10-14 1949-02-18 Isthmian Metals Inc Making products of powdered iron or iron alloys
GB752687A (en) * 1953-05-02 1956-07-11 Husqvarna Vapenfabriks Ab Improvements in the manufacture of sintered iron bodies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1075886A2 (en) * 1999-08-13 2001-02-14 Crucible Materials Corporation Hot isostatic compacting of high alloy tool steel particles
EP1075886A3 (en) * 1999-08-13 2004-01-21 Crucible Materials Corporation Hot isostatic compacting of high alloy tool steel particles

Also Published As

Publication number Publication date
US3772009A (en) 1973-11-13
SE357213B (en) 1973-06-18
FR2156788B1 (en) 1976-10-29
JPS4849609A (en) 1973-07-13
FR2156788A1 (en) 1973-06-01
JPS5030005B2 (en) 1975-09-27
DE2250495B2 (en) 1975-01-23
DE2250495A1 (en) 1973-04-26
DE2250495C3 (en) 1975-08-28
CA974382A (en) 1975-09-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee