SE7502546L - - Google Patents

Info

Publication number
SE7502546L
SE7502546L SE7502546A SE7502546A SE7502546L SE 7502546 L SE7502546 L SE 7502546L SE 7502546 A SE7502546 A SE 7502546A SE 7502546 A SE7502546 A SE 7502546A SE 7502546 L SE7502546 L SE 7502546L
Authority
SE
Sweden
Prior art keywords
steel
tempering
march
followed
centrifugal casting
Prior art date
Application number
SE7502546A
Other languages
Unknown language ( )
Inventor
C Beardsley
H M Argent
M Ozel
Original Assignee
British Steel Corp
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 British Steel Corp filed Critical British Steel Corp
Publication of SE7502546L publication Critical patent/SE7502546L/

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D13/00—Centrifugal casting; Casting by using centrifugal force
    • B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
    • B22D13/101—Moulds
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Steel (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

1439421 Centrifugal casting mould BRITISH STEEL CORP 7 March 1975 [8 March 1974 31 July 1974] 10553/74 and 33801/74 Heading C7A [Also in Division B3] The addition of 1À90-4À0% Cr 0À50-2À0% MO to a steel significantly improves its resistance to thermal crazing and renders the alloy suitable for use as a centrifugal casting mould for ferrous pipes or tubes. The steel preferably contains 0À08-0À04% C, and a suitable composition is C 0À08-0À40 Cr 1À90-4À0 Mo 0À50-2À0 Si 0-0À50 Mn 0À3-0À7 Mi 0-0À40 Cu 0-0À25 Sn 0-0À03 with iron as balance containing the usual impurities i.e. P and S. Examples of moulds within this composition range which were cast, forged and either normalized at 960 C followed by tempering at 690‹C or heat-treated and oil quenched from 850‹C followed by tempering at 630‹C, slow cooling at 500‹C and finally aircooling prior to machining to final shape, gave a two-fold increase in service life over the current low-Cr, low-Mo steel presently used.
SE7502546A 1974-03-08 1975-03-07 SE7502546L (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1055374A GB1439421A (en) 1974-03-08 1974-03-08 Centrifugal pipe mould
GB3380174 1974-07-31

Publications (1)

Publication Number Publication Date
SE7502546L true SE7502546L (en) 1975-09-09

Family

ID=26247598

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7502546A SE7502546L (en) 1974-03-08 1975-03-07

Country Status (4)

Country Link
DE (1) DE2509554A1 (en)
FR (1) FR2263055A1 (en)
GB (1) GB1439421A (en)
SE (1) SE7502546L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2858331B1 (en) * 2003-08-01 2006-12-01 Aubert Et Duval SURFACE IN CONTACT WITH TITANIUM OR TITANIUM ALLOY
CN109628711A (en) * 2018-12-29 2019-04-16 石家庄盛华企业集团有限公司 A kind of OM7 6E material heat treatment process

Also Published As

Publication number Publication date
GB1439421A (en) 1976-06-16
DE2509554A1 (en) 1975-09-11
FR2263055A1 (en) 1975-10-03

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