JPS5791869A - Production of spheroidal graphite cast iron - Google Patents

Production of spheroidal graphite cast iron

Info

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
Application number
JP16714380A
Other languages
Japanese (ja)
Other versions
JPS591498B2 (en
Inventor
Susumu Togawa
Toshio Tani
Manabu Kurotobi
Toshio Toshima
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 JP16714380A priority Critical patent/JPS591498B2/en
Publication of JPS5791869A publication Critical patent/JPS5791869A/en
Publication of JPS591498B2 publication Critical patent/JPS591498B2/en
Expired legal-status Critical Current

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
JP16714380A 1980-11-26 1980-11-26 Manufacturing method of spheroidal black ship cast iron pipe Expired JPS591498B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
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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