JPS56114570A - Manufacture of spheroidal graphite cast iron casting - Google Patents

Manufacture of spheroidal graphite cast iron casting

Info

Publication number
JPS56114570A
JPS56114570A JP1705480A JP1705480A JPS56114570A JP S56114570 A JPS56114570 A JP S56114570A JP 1705480 A JP1705480 A JP 1705480A JP 1705480 A JP1705480 A JP 1705480A JP S56114570 A JPS56114570 A JP S56114570A
Authority
JP
Japan
Prior art keywords
mold
prescribed
metal
temperature
thickness
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
JP1705480A
Other languages
Japanese (ja)
Other versions
JPS6411389B2 (en
Inventor
Masanobu Tsuchida
Hiroo Komuro
Masayuki Kagitani
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.)
Sintokogio Ltd
Original Assignee
Sintokogio Ltd
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 Sintokogio Ltd filed Critical Sintokogio Ltd
Priority to JP1705480A priority Critical patent/JPS56114570A/en
Publication of JPS56114570A publication Critical patent/JPS56114570A/en
Publication of JPS6411389B2 publication Critical patent/JPS6411389B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to improve the tensile strength considerably, by mold- casting the molten metal at a prescribed temperature after a coating of a prescribed thickness is applied on the surface of mold having a prescribed mold thickness ratio, and by heating the metal for a prescribed time at a prescribed temperature after it is solidified and taken out from the mold, and then by cooling the metal at a prescribed cooling rate.
CONSTITUTION: The molten metal is poured into the metal mold of 60W250°C temperature, the thickness of which is formed so that the ratio of mold thickness becomes 4W10 and which has a coating of 0.05W0.5mm on the surface. When the molten metal is solidified, the metal is taken out from the mold and heated for 0.5W6hr at 900W930°C temperature in the heat treatment furnace, and then it is cooled at 10W200°C/sec cooling rate and thus the hardening is performed. By this, a spheroidal graphite cast iron casting which is small in grain diameter, uniform in metallic structure, and high in tensile strength, is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP1705480A 1980-02-14 1980-02-14 Manufacture of spheroidal graphite cast iron casting Granted JPS56114570A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1705480A JPS56114570A (en) 1980-02-14 1980-02-14 Manufacture of spheroidal graphite cast iron casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1705480A JPS56114570A (en) 1980-02-14 1980-02-14 Manufacture of spheroidal graphite cast iron casting

Publications (2)

Publication Number Publication Date
JPS56114570A true JPS56114570A (en) 1981-09-09
JPS6411389B2 JPS6411389B2 (en) 1989-02-23

Family

ID=11933272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1705480A Granted JPS56114570A (en) 1980-02-14 1980-02-14 Manufacture of spheroidal graphite cast iron casting

Country Status (1)

Country Link
JP (1) JPS56114570A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61119351A (en) * 1984-11-13 1986-06-06 Toyota Motor Corp Production of cast iron material having fine spheroidal graphite

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61119351A (en) * 1984-11-13 1986-06-06 Toyota Motor Corp Production of cast iron material having fine spheroidal graphite

Also Published As

Publication number Publication date
JPS6411389B2 (en) 1989-02-23

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