JPS5791869A - Production of spheroidal graphite cast iron - Google Patents
Production of spheroidal graphite cast ironInfo
- Publication number
- JPS5791869A JPS5791869A JP16714380A JP16714380A JPS5791869A JP S5791869 A JPS5791869 A JP S5791869A JP 16714380 A JP16714380 A JP 16714380A JP 16714380 A JP16714380 A JP 16714380A JP S5791869 A JPS5791869 A JP S5791869A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- effect
- cryolite
- cast iron
- dies
- 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
Abstract
PURPOSE: To eliminate the occurrence of bending and elliptical shaping of a cast iron pipe by including Mg powder and cryolite powder in Fe-Si type or Ca-Si type powder to be sprayed on the inside surfaces of dies in die casting of a spheroidal graphite cast iron.
CONSTITUTION: Fe-Si alloy powder or Ca-Si alloy powder mixed with 2W5% Mg powder and 2W5% cryolite powder is sprayed on the inside surfaces of dies, and a cat iron steel is cast. here, the Mg stirs the molten metal by its explosive reaction, and decreases the inoculation irregularities owing to the irregular spraying of a dry coating material. Whether the spraying is sure or not is discriminated exactly by the fumes of the Mg, and further the Mg per se has a graphitization effect, and improves and inoculation effect. On the other hand, the cryolite improves the penetration of the dry coating material, and slags by reacting with the residues of its dissolution, thereby preventing dross formation. If the Mg is below 2%, the effect is insufficient and above 5%, the sound cast iron pipe is not obtained, the graphitization effect is lost, and the tendency toward formation of white pig iron is intensified. If the cryolite is below 2%, there is no intended effect, and above 5%, it is included in the molten metal and will be the cause for defects.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16714380A JPS591498B2 (en) | 1980-11-26 | 1980-11-26 | Manufacturing method of spheroidal black ship cast iron pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16714380A JPS591498B2 (en) | 1980-11-26 | 1980-11-26 | Manufacturing method of spheroidal black ship cast iron pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5791869A true JPS5791869A (en) | 1982-06-08 |
JPS591498B2 JPS591498B2 (en) | 1984-01-12 |
Family
ID=15844214
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16714380A Expired JPS591498B2 (en) | 1980-11-26 | 1980-11-26 | Manufacturing method of spheroidal black ship cast iron pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS591498B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63260667A (en) * | 1987-04-17 | 1988-10-27 | Sankyo Gokin Chuzosho:Kk | Method for casting unchilled cast iron |
US5195473A (en) * | 1989-09-08 | 1993-03-23 | Nissan Motor Company, Ltd. | Rocker arm and method of casting |
US5316068A (en) * | 1989-01-20 | 1994-05-31 | Aisin Seiki Kabushiki Kaisha | Method for producing casting with functional gradient |
JP2009226484A (en) * | 2002-01-25 | 2009-10-08 | Pechiney Electrometallurgie | Product for protection of continuous cast mold for cast-iron pipe |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6167599A (en) * | 1984-09-10 | 1986-04-07 | Tohoku Metal Ind Ltd | Magnetic field forming method and forming device |
-
1980
- 1980-11-26 JP JP16714380A patent/JPS591498B2/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63260667A (en) * | 1987-04-17 | 1988-10-27 | Sankyo Gokin Chuzosho:Kk | Method for casting unchilled cast iron |
US5316068A (en) * | 1989-01-20 | 1994-05-31 | Aisin Seiki Kabushiki Kaisha | Method for producing casting with functional gradient |
US5195473A (en) * | 1989-09-08 | 1993-03-23 | Nissan Motor Company, Ltd. | Rocker arm and method of casting |
JP2009226484A (en) * | 2002-01-25 | 2009-10-08 | Pechiney Electrometallurgie | Product for protection of continuous cast mold for cast-iron pipe |
Also Published As
Publication number | Publication date |
---|---|
JPS591498B2 (en) | 1984-01-12 |
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