JPS5641061A - Production of high chromium roll of tough core material - Google Patents
Production of high chromium roll of tough core materialInfo
- Publication number
- JPS5641061A JPS5641061A JP11712879A JP11712879A JPS5641061A JP S5641061 A JPS5641061 A JP S5641061A JP 11712879 A JP11712879 A JP 11712879A JP 11712879 A JP11712879 A JP 11712879A JP S5641061 A JPS5641061 A JP S5641061A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- core material
- contents
- cast iron
- pouring
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
PURPOSE:To substitute the previously poured molten metal with the post pouring of less Cr diffusion and improve the toughness of a roll by pouring core material molten metal from the lower part of the outer layer centrifugally cast with the specific high chromium material and allowing the same to overflow from the upper part. CONSTITUTION:A vertical mold 12 is constituted by a high chromium outer layer 1 containing 13-27wt% Cr provided within a centrifugally casting mold 4 and upper, lower dies 7, 6. Next, core material molten metal of ductile cast iron or high- class cast iron is continuously poured into the mold 12 via a pouring basin 13, a pouring pipe 14 and a cross gate 10 and the molten metal is overflowed from a discharge port 11. This causes the previously poured molten metal of increased Cr contents by washing the inside surface of the outside layer 1 to overflow successively from the discharge port 11, so that the post poured core material molten metal of less Cr contents of <=0.9% Cr contents is filled in the mold 12. The reason for limiting the Cr contents of the core material molten metal of the ductile cast iron or high- class cast iron is: If the amount becomes more than the limited amount, toughness will decrease.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54117128A JPS5920415B2 (en) | 1979-09-11 | 1979-09-11 | Manufacturing method of high chromium roll with strong core material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54117128A JPS5920415B2 (en) | 1979-09-11 | 1979-09-11 | Manufacturing method of high chromium roll with strong core material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5641061A true JPS5641061A (en) | 1981-04-17 |
JPS5920415B2 JPS5920415B2 (en) | 1984-05-12 |
Family
ID=14704126
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54117128A Expired JPS5920415B2 (en) | 1979-09-11 | 1979-09-11 | Manufacturing method of high chromium roll with strong core material |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5920415B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50142292A (en) * | 1974-05-04 | 1975-11-15 | ||
US8328703B2 (en) | 2009-05-29 | 2012-12-11 | Acos Villares S.A. | Rolling mill cast roll |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104525889B (en) * | 2014-12-31 | 2016-09-07 | 中钢集团邢台机械轧辊有限公司 | A kind of manufacture method of high-speed steel roll |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS493820A (en) * | 1972-05-01 | 1974-01-14 | ||
JPS5037019A (en) * | 1973-08-08 | 1975-04-07 | ||
JPS5343623A (en) * | 1976-10-01 | 1978-04-19 | Yodogawa Steel Works | Method of manufacturing centrifugal casting heavy compound roll and device for arranging bottom pouring pipe for the method |
JPS5376119A (en) * | 1976-12-17 | 1978-07-06 | Hitachi Metals Ltd | Highhhardness highhchrome roll and method of making same |
JPS54103727A (en) * | 1978-02-01 | 1979-08-15 | Kubota Ltd | Ductile cast roll excellent in toughness |
-
1979
- 1979-09-11 JP JP54117128A patent/JPS5920415B2/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS493820A (en) * | 1972-05-01 | 1974-01-14 | ||
JPS5037019A (en) * | 1973-08-08 | 1975-04-07 | ||
JPS5343623A (en) * | 1976-10-01 | 1978-04-19 | Yodogawa Steel Works | Method of manufacturing centrifugal casting heavy compound roll and device for arranging bottom pouring pipe for the method |
JPS5376119A (en) * | 1976-12-17 | 1978-07-06 | Hitachi Metals Ltd | Highhhardness highhchrome roll and method of making same |
JPS54103727A (en) * | 1978-02-01 | 1979-08-15 | Kubota Ltd | Ductile cast roll excellent in toughness |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50142292A (en) * | 1974-05-04 | 1975-11-15 | ||
US8328703B2 (en) | 2009-05-29 | 2012-12-11 | Acos Villares S.A. | Rolling mill cast roll |
Also Published As
Publication number | Publication date |
---|---|
JPS5920415B2 (en) | 1984-05-12 |
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