JPS64245A - Spheroidal graphite cast iron - Google Patents
Spheroidal graphite cast ironInfo
- Publication number
- JPS64245A JPS64245A JP32381287A JP32381287A JPS64245A JP S64245 A JPS64245 A JP S64245A JP 32381287 A JP32381287 A JP 32381287A JP 32381287 A JP32381287 A JP 32381287A JP S64245 A JPS64245 A JP S64245A
- Authority
- JP
- Japan
- Prior art keywords
- spheroidal graphite
- cast iron
- graphite cast
- iron
- value
- 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 manufacture a spheroidal graphite cast iron improved in mechanical properties at a low cost, by incorporating specific percentages of C, Si, Mn, P, Ni, Cr, and Mg to iron and also specifying CE value.
CONSTITUTION: A spheroidal graphite cast iron which consists of, by weight, 3.0W4.0% C, 1.5W2.3% Si, <0.3% Mn, <0.03% P, 0.5W2.0% Ni, <0.10% Cr, 0.02W0.06% Mg, and the balance iron with inevitable impurities and in which CE value is regulated to 3.9W4.6% is prepared. Moreover, Bi is added, if necessary, to the above molten metal by 0.005W0.03%, and inoculation is carried out simultaneously with the Bi addition or after the Bi addition so as to regulate the number of graphite grains to ≥300 piece/mm2 and also to regulate the residual Bi content to 0.0015W0.015%. By this method, the spheroidal graphite cast iron having superior tensile strength, elongation, and impact value in the as-cast state and further improved in impact value at low temp. when heat treated can be obtained.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62323812A JP2716063B2 (en) | 1987-03-09 | 1987-12-23 | Spheroidal graphite cast iron with excellent low temperature toughness |
DE3807455A DE3807455C2 (en) | 1987-03-09 | 1988-03-08 | Nodular cast iron with high impact strength and method for its treatment |
GB8805483A GB2203448B (en) | 1987-03-09 | 1988-03-08 | Nodular cast iron |
US07/165,873 US4889687A (en) | 1987-03-09 | 1988-03-09 | Nodular cast iron having a high impact strength and process of treating the same |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-52205 | 1987-03-09 | ||
JP5220587 | 1987-03-09 | ||
JP62323812A JP2716063B2 (en) | 1987-03-09 | 1987-12-23 | Spheroidal graphite cast iron with excellent low temperature toughness |
Publications (3)
Publication Number | Publication Date |
---|---|
JPH01245A JPH01245A (en) | 1989-01-05 |
JPS64245A true JPS64245A (en) | 1989-01-05 |
JP2716063B2 JP2716063B2 (en) | 1998-02-18 |
Family
ID=26392817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62323812A Expired - Fee Related JP2716063B2 (en) | 1987-03-09 | 1987-12-23 | Spheroidal graphite cast iron with excellent low temperature toughness |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2716063B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01309939A (en) * | 1988-03-09 | 1989-12-14 | Hitachi Metals Ltd | Spheroidal graphite cast iron and its manufacture |
JPH06116677A (en) * | 1992-10-06 | 1994-04-26 | Nippon Steel Corp | Ductile cast iron material excellent in tenacity and surface roughening resistance |
US6866726B1 (en) * | 1999-06-08 | 2005-03-15 | Asahi Tec Corporation | Non-austemper treated spheroidal graphite cast iron |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5397918A (en) * | 1977-02-09 | 1978-08-26 | Hitachi Metals Ltd | Pearlite spheroidal graphite cast iron with no aftercast treatment |
-
1987
- 1987-12-23 JP JP62323812A patent/JP2716063B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5397918A (en) * | 1977-02-09 | 1978-08-26 | Hitachi Metals Ltd | Pearlite spheroidal graphite cast iron with no aftercast treatment |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01309939A (en) * | 1988-03-09 | 1989-12-14 | Hitachi Metals Ltd | Spheroidal graphite cast iron and its manufacture |
JPH06116677A (en) * | 1992-10-06 | 1994-04-26 | Nippon Steel Corp | Ductile cast iron material excellent in tenacity and surface roughening resistance |
US6866726B1 (en) * | 1999-06-08 | 2005-03-15 | Asahi Tec Corporation | Non-austemper treated spheroidal graphite cast iron |
Also Published As
Publication number | Publication date |
---|---|
JP2716063B2 (en) | 1998-02-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |