GB1449052A - Ingot moulds - Google Patents

Ingot moulds

Info

Publication number
GB1449052A
GB1449052A GB836773A GB836773A GB1449052A GB 1449052 A GB1449052 A GB 1449052A GB 836773 A GB836773 A GB 836773A GB 836773 A GB836773 A GB 836773A GB 1449052 A GB1449052 A GB 1449052A
Authority
GB
United Kingdom
Prior art keywords
region
mould
ferrite
cavity
sand
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
GB836773A
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.)
British Steel Corp
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
Priority to GB836773A priority Critical patent/GB1449052A/en
Priority to DE19742407901 priority patent/DE2407901A1/en
Priority to US443516A priority patent/US3860459A/en
Priority to JP49019544A priority patent/JPS5040423A/ja
Publication of GB1449052A publication Critical patent/GB1449052A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • B22D7/066—Manufacturing, repairing or reinforcing ingot moulds
    • B22D7/068—Manufacturing, repairing or reinforcing ingot moulds characterised by the materials used therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S148/00—Metal treatment
    • Y10S148/902—Metal treatment having portions of differing metallurgical properties or characteristics

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mold Materials And Core Materials (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

1449052 Cast iron moulds; heat treatment BRITISH STEEL CORP 20 Feb 1974 [20 Feb 1973] 8367/73 Headings C7A and C7N [Also in Division B3] A cast iron ingot mould 1 incorporates graphite in a matrix which has a predominantly pearlitic structure in the region 10 surrounding the cavity 5 and a predominantly ferritic structure surrounding the region 10. The ferritic region may be at least three times as thick as the pearlitic region 10 and contain up to 40% by volume of pearlite. The region 10 may contain up to 40% by volume of ferrite. To promote the formation of vermicular or spheroidal graphite, Mg, Ce or Ti or a combination of some of these elements or soluble nitrogen may be included in the molten iron for casting the mould. As shown, a mould 1, covered by a square iron slab and standing on an annular iron slab 3 in an electric furnace 2, is heated above the A 1 temperature to anneal the outer region to ferrite while cold air passes from a pipe 7 through the cavity 5 to outlets 8, 9. The cast iron has the following constituents; - C 3À75, Si 1.50, Mn 0.75, Mg 0.013, P 0.030, Ce 0À006 and S 0.015 and, initially, the matrix contained 85% pearlite, the remainder being ferrite, while the graphite was 85% of vermicular form. After heating for 20 hours, the outer ferrite region is three times as thick as the region 10. The mould 1 then cools for 12 hours before removal from the furnace 2. In an alternative method, the same metal is cast in a sand mould and the resulting ingot mould is allowed to cool to 850‹C, 150‹C above the A 1 temperature, so that the matrix is 80% ferrite. The sand in the cavity is then removed to allow the region 10 to cool more rapidly. After the outer surface is below the A 1 temperature, the ingot mould is removed from the sand mould and allowed to cool. The outer, ferrite region is found to be four times as thick as the region 10. Cast iron chills may be used in the mould cavity, after the sand removal, to give a thicker pearlitic region 10.
GB836773A 1973-02-20 1973-02-20 Ingot moulds Expired GB1449052A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB836773A GB1449052A (en) 1973-02-20 1973-02-20 Ingot moulds
DE19742407901 DE2407901A1 (en) 1973-02-20 1974-02-19 CLOCKWISE
US443516A US3860459A (en) 1973-02-20 1974-02-19 Ingot moulds
JP49019544A JPS5040423A (en) 1973-02-20 1974-02-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB836773A GB1449052A (en) 1973-02-20 1973-02-20 Ingot moulds

Publications (1)

Publication Number Publication Date
GB1449052A true GB1449052A (en) 1976-09-08

Family

ID=9851184

Family Applications (1)

Application Number Title Priority Date Filing Date
GB836773A Expired GB1449052A (en) 1973-02-20 1973-02-20 Ingot moulds

Country Status (4)

Country Link
US (1) US3860459A (en)
JP (1) JPS5040423A (en)
DE (1) DE2407901A1 (en)
GB (1) GB1449052A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426521A1 (en) * 1978-05-23 1979-12-21 Hoogovens Ijmuiden Bv LINGOTIER MANUFACTURING PROCESS
US4236944A (en) * 1977-10-24 1980-12-02 Sandvik Aktiebolag Cast iron especially suited for ingot molds
CN102554147A (en) * 2012-03-07 2012-07-11 四川川投峨眉铁合金（集团）有限责任公司 Combined type ingot mould and casting method thereof
EP3512975A4 (en) * 2016-09-13 2020-04-01 Tupy S.A. Vermicular cast iron alloy and internal combustion engine head

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5346561A (en) * 1992-02-27 1994-09-13 Hitachi Metals, Ltd. Spheroidal graphite cast iron member having improved mechanical strength hand method of producing same
BR0105989B1 (en) * 2001-11-27 2009-08-11 graphically cast iron of high mechanical resistance.
CN110090933B (en) * 2019-03-29 2021-10-08 石钢京诚装备技术有限公司 Pouring process of low segregation plastic die steel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1841914A (en) * 1926-09-01 1932-01-19 Valley Mould & Iron Corp Ingot mold
US1762098A (en) * 1929-07-19 1930-06-03 Valley Mould & Iron Corp Ingot mold
US2937424A (en) * 1956-06-28 1960-05-24 Cie De Pont A Mousson Ingot mould made of spheroidal graphite cast iron

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4236944A (en) * 1977-10-24 1980-12-02 Sandvik Aktiebolag Cast iron especially suited for ingot molds
FR2426521A1 (en) * 1978-05-23 1979-12-21 Hoogovens Ijmuiden Bv LINGOTIER MANUFACTURING PROCESS
US4300616A (en) * 1978-05-23 1981-11-17 Estel Hoogovens Bv Manufacture of cast-iron ingot moulds
CN102554147A (en) * 2012-03-07 2012-07-11 四川川投峨眉铁合金（集团）有限责任公司 Combined type ingot mould and casting method thereof
CN102554147B (en) * 2012-03-07 2013-11-13 四川川投峨眉铁合金（集团）有限责任公司 Combined type ingot mould and casting method thereof
EP3512975A4 (en) * 2016-09-13 2020-04-01 Tupy S.A. Vermicular cast iron alloy and internal combustion engine head

Also Published As

Publication number Publication date
DE2407901A1 (en) 1974-08-22
US3860459A (en) 1975-01-14
JPS5040423A (en) 1975-04-14

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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