JPS6076252A - Casting mold made of cast iron having two-layered structure for steel ingot - Google Patents

Casting mold made of cast iron having two-layered structure for steel ingot

Info

Publication number
JPS6076252A
JPS6076252A JP18572583A JP18572583A JPS6076252A JP S6076252 A JPS6076252 A JP S6076252A JP 18572583 A JP18572583 A JP 18572583A JP 18572583 A JP18572583 A JP 18572583A JP S6076252 A JPS6076252 A JP S6076252A
Authority
JP
Japan
Prior art keywords
mold
steel ingot
cast iron
casting
tone sheet
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.)
Pending
Application number
JP18572583A
Other languages
Japanese (ja)
Inventor
Shiro Nakamura
Masatada Takagi
Nobuhiro Sakamoto
Original Assignee
Kubota Ltd
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 Kubota Ltd filed Critical Kubota Ltd
Priority to JP18572583A priority Critical patent/JPS6076252A/en
Publication of JPS6076252A publication Critical patent/JPS6076252A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00Casting ingots, e.g. from ferrous metals
    • B22D7/06Ingot moulds or their manufacture

Abstract

PURPOSE:To prevent generation of a tone sheet in the stage of removing a steel ingot from a mold for casting a steel ingot by using thinly a material which is different from the material of the mold and has a low yield point to constitute the part of the lower inside surface of the mold where the tone sheet is liable to arise. CONSTITUTION:A core 9 for forming the inside surface of a mold for casting a steel ingot is erected on a flat plate-shaped drag 8 and a master mold 10 is disposed to form a space 12 for forming the mold to enclose said core mold. A cast iron for the casting mold is then poured through a runner 11 and a sprue 13 into the space 12 to cast the mold. A mold coating material 14 mixed with powder of ferrosilicon is used in the part of the lower outside circumferential surface of the mold 9 where a tone sheet is liable to arise. The molten cast iron poured into this part forms the material consisting primcipally of ferrite having a low yield point to 0.2-1mm. thickness as the cementite in the pearlite base is decomposed to ferrite and graphite by ferrosilicon. The generation of the tone sheet on the lower inside surface of the mold is obviated in the stage of drawing the steel ingot cast by using such mold.
JP18572583A 1983-10-03 1983-10-03 Casting mold made of cast iron having two-layered structure for steel ingot Pending JPS6076252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18572583A JPS6076252A (en) 1983-10-03 1983-10-03 Casting mold made of cast iron having two-layered structure for steel ingot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18572583A JPS6076252A (en) 1983-10-03 1983-10-03 Casting mold made of cast iron having two-layered structure for steel ingot

Publications (1)

Publication Number Publication Date
JPS6076252A true JPS6076252A (en) 1985-04-30

Family

ID=16175760

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18572583A Pending JPS6076252A (en) 1983-10-03 1983-10-03 Casting mold made of cast iron having two-layered structure for steel ingot

Country Status (1)

Country Link
JP (1) JPS6076252A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0319603A (en) * 1989-06-15 1991-01-28 Kobashi Kogyo Co Ltd Extended apron device for rotary tiller
CN102343423A (en) * 2011-09-29 2012-02-08 上海宝钢铸造有限公司 Steel ingot mold cast-iron core bar with large ratio of height to diameter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0319603A (en) * 1989-06-15 1991-01-28 Kobashi Kogyo Co Ltd Extended apron device for rotary tiller
CN102343423A (en) * 2011-09-29 2012-02-08 上海宝钢铸造有限公司 Steel ingot mold cast-iron core bar with large ratio of height to diameter

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