JPS5641064A - Production of high chromium roll having cavity on core part - Google Patents

Production of high chromium roll having cavity on core part

Info

Publication number
JPS5641064A
JPS5641064A JP11713179A JP11713179A JPS5641064A JP S5641064 A JPS5641064 A JP S5641064A JP 11713179 A JP11713179 A JP 11713179A JP 11713179 A JP11713179 A JP 11713179A JP S5641064 A JPS5641064 A JP S5641064A
Authority
JP
Japan
Prior art keywords
amount
inoculant
molten metal
cavity
outer layer
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.)
Granted
Application number
JP11713179A
Other languages
Japanese (ja)
Other versions
JPS5920418B2 (en
Inventor
Shiro Nakamura
Yoshihiro Nakagawa
Takashi Hashimoto
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.)
Kubota Corp
Original Assignee
Kubota 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 Kubota Corp filed Critical Kubota Corp
Priority to JP54117131A priority Critical patent/JPS5920418B2/en
Publication of JPS5641064A publication Critical patent/JPS5641064A/en
Publication of JPS5920418B2 publication Critical patent/JPS5920418B2/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
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills

Abstract

PURPOSE:To improve the toughness of a high-chromium roll having a cavity by pouring the molten metal added with a proper amount of an inoculant based on the Si amount of core material composition to the high-chromium outer layer of the specific Cr amount and piercing a cavity. CONSTITUTION:A vertical mold 9 is constituted by a centrifugally casting mold 4 having therein an outer layer 1 of high chromium containing 13-27wt% Cr and upper, lower dies 7, 6. Molten ductile cast iron is then poured through the pouring basin 8 of the upper die 7. At this time, an inoculant 14 of Fe-Si base or the like is continuously and uniformly added at 0.1-1.0wt% based on the Si amount in the molten metal composition to the core material molten metal from the hopper 13 of the pouring basin 8. Next, strain relief heat treatment and roughing are applied to the composite roll blank material 2, after which a heater insertion hole 2' is pierced. The reason for limiting the amount of additin of the inoculant is: If it is added more than the limited amunts, the molten metal slag amount of the inoculant increases and the interposition of foreign material at the interface between the outer layer and the core material becomes likely to occur.
JP54117131A 1979-09-11 1979-09-11 Manufacturing method of high chromium roll with a cavity in the core Expired JPS5920418B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54117131A JPS5920418B2 (en) 1979-09-11 1979-09-11 Manufacturing method of high chromium roll with a cavity in the core

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54117131A JPS5920418B2 (en) 1979-09-11 1979-09-11 Manufacturing method of high chromium roll with a cavity in the core

Publications (2)

Publication Number Publication Date
JPS5641064A true JPS5641064A (en) 1981-04-17
JPS5920418B2 JPS5920418B2 (en) 1984-05-12

Family

ID=14704203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54117131A Expired JPS5920418B2 (en) 1979-09-11 1979-09-11 Manufacturing method of high chromium roll with a cavity in the core

Country Status (1)

Country Link
JP (1) JPS5920418B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002301505A (en) * 2001-04-02 2002-10-15 Hitachi Metals Ltd Composite rolling roll
CN115430820A (en) * 2022-09-28 2022-12-06 河北津西钢铁集团重工科技有限公司 Method for centrifugally casting cast iron roller sleeve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS493820A (en) * 1972-05-01 1974-01-14
JPS5014992A (en) * 1973-05-07 1975-02-17
JPS51135824A (en) * 1975-05-19 1976-11-25 Kubota Ltd Method of producing cast iron rolls with cavitys in the core
JPS5376119A (en) * 1976-12-17 1978-07-06 Hitachi Metals Ltd Highhhardness highhchrome roll and method of making same
JPS54103721A (en) * 1978-02-01 1979-08-15 Kubota Ltd Inoculation method in core casting for compound roll
JPS54103729A (en) * 1978-02-01 1979-08-15 Kubota Ltd Highly tough ductile cast iron core roll for compound roll

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS493820A (en) * 1972-05-01 1974-01-14
JPS5014992A (en) * 1973-05-07 1975-02-17
JPS51135824A (en) * 1975-05-19 1976-11-25 Kubota Ltd Method of producing cast iron rolls with cavitys in the core
JPS5376119A (en) * 1976-12-17 1978-07-06 Hitachi Metals Ltd Highhhardness highhchrome roll and method of making same
JPS54103721A (en) * 1978-02-01 1979-08-15 Kubota Ltd Inoculation method in core casting for compound roll
JPS54103729A (en) * 1978-02-01 1979-08-15 Kubota Ltd Highly tough ductile cast iron core roll for compound roll

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002301505A (en) * 2001-04-02 2002-10-15 Hitachi Metals Ltd Composite rolling roll
CN115430820A (en) * 2022-09-28 2022-12-06 河北津西钢铁集团重工科技有限公司 Method for centrifugally casting cast iron roller sleeve

Also Published As

Publication number Publication date
JPS5920418B2 (en) 1984-05-12

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