JPS58209443A - Cast iron piston and its production - Google Patents

Cast iron piston and its production

Info

Publication number
JPS58209443A
JPS58209443A JP9273082A JP9273082A JPS58209443A JP S58209443 A JPS58209443 A JP S58209443A JP 9273082 A JP9273082 A JP 9273082A JP 9273082 A JP9273082 A JP 9273082A JP S58209443 A JPS58209443 A JP S58209443A
Authority
JP
Japan
Prior art keywords
piston
cast iron
core
mold
flake graphite
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
JP9273082A
Other languages
Japanese (ja)
Other versions
JPH029898B2 (en
Inventor
Yoshihiro Suzuki
Toshiaki Hirama
Original Assignee
Izumi Jidosha Kogyo Kk
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 Izumi Jidosha Kogyo Kk filed Critical Izumi Jidosha Kogyo Kk
Priority to JP57092730A priority Critical patent/JPH029898B2/ja
Publication of JPS58209443A publication Critical patent/JPS58209443A/en
Publication of JPH029898B2 publication Critical patent/JPH029898B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00Casting in, on, or around objects which form part of the product
    • B22D19/0009Cylinders, pistons
    • B22D19/0027Cylinders, pistons pistons

Abstract

PURPOSE:To obtain a cast iron piston having excellent heat resistance and strength by forming a flake graphite cast iron layer of a specific thickness on the wall surface in a piston head part constituting a combustion chamber. CONSTITUTION:A core 1 is formed by a cold box method using a urethane resin, and an annular mold coating 3 is formed in the prescribed place of the core 1 corresponding to the mouth end part 2a of the combustion chamber 2 of a piston 7 by using flake graphite contg. 10% S as a base mold coating material, and using a phenolic resin as a binder and methanol as a solvent. The core 1 is fitted to the lower part of a master mold 4 in such a way that the piston head part is located downward. Molten metal is then charged into the mold to form an annular flake graphite layer 5 having 0.5-3mm. thickness on the surface of the piston head part corresponding to the part 2a formed with the mold coating 3. The cast iron piston 7 wherein the remaining part, i.e. piston body 6 is constituted of spheroidal graphite cast iron having >=90% spheroidization rate is obtained.
JP57092730A 1982-05-31 1982-05-31 Expired - Lifetime JPH029898B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57092730A JPH029898B2 (en) 1982-05-31 1982-05-31

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57092730A JPH029898B2 (en) 1982-05-31 1982-05-31

Publications (2)

Publication Number Publication Date
JPS58209443A true JPS58209443A (en) 1983-12-06
JPH029898B2 JPH029898B2 (en) 1990-03-05

Family

ID=14062533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57092730A Expired - Lifetime JPH029898B2 (en) 1982-05-31 1982-05-31

Country Status (1)

Country Link
JP (1) JPH029898B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120756A (en) * 1982-12-27 1984-07-12 Hino Motors Ltd Piston
JP2001269767A (en) * 2000-03-27 2001-10-02 Kurimoto Ltd Method for producing spheroical graphite cast iron product
CN102744373A (en) * 2012-07-05 2012-10-24 繁昌县金科铸造有限责任公司 Casting process for piston shell
CN103394632A (en) * 2013-08-01 2013-11-20 湖北工业大学 Alcohol-based white coating for sand mold cast iron, and preparation method thereof
US8726974B2 (en) 2010-01-29 2014-05-20 Caterpillar Inc. In-situ graphite shape control for iron castings
CN105382178A (en) * 2015-11-05 2016-03-09 埃维柯精密铸造(安徽)有限公司 Formula of paint for lost foam spheroidal graphite cast iron and processing method of paint

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4829010A (en) * 1971-08-18 1973-04-17
JPS526336A (en) * 1975-07-04 1977-01-18 Nippon Musical Instruments Mfg Method of coating mold

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4829010A (en) * 1971-08-18 1973-04-17
JPS526336A (en) * 1975-07-04 1977-01-18 Nippon Musical Instruments Mfg Method of coating mold

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120756A (en) * 1982-12-27 1984-07-12 Hino Motors Ltd Piston
JPH0131029B2 (en) * 1982-12-27 1989-06-22 Hino Motors Ltd
JP2001269767A (en) * 2000-03-27 2001-10-02 Kurimoto Ltd Method for producing spheroical graphite cast iron product
US8726974B2 (en) 2010-01-29 2014-05-20 Caterpillar Inc. In-situ graphite shape control for iron castings
CN102744373A (en) * 2012-07-05 2012-10-24 繁昌县金科铸造有限责任公司 Casting process for piston shell
CN102744373B (en) * 2012-07-05 2016-03-02 繁昌县金科铸造有限责任公司 The casting technique of piston shell
CN103394632A (en) * 2013-08-01 2013-11-20 湖北工业大学 Alcohol-based white coating for sand mold cast iron, and preparation method thereof
CN105382178A (en) * 2015-11-05 2016-03-09 埃维柯精密铸造(安徽)有限公司 Formula of paint for lost foam spheroidal graphite cast iron and processing method of paint

Also Published As

Publication number Publication date
JPH029898B2 (en) 1990-03-05

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