SPHEROIDAL GRAPHITE CAST IRON, SPHEROIDAL GRAPHITE CAST IRON MANUFACTURING METHOD, AND SPHEROIDIZING TREATMENT AGENT

Title:

SPHEROIDAL GRAPHITE CAST IRON, SPHEROIDAL GRAPHITE CAST IRON MANUFACTURING METHOD, AND SPHEROIDIZING TREATMENT AGENT

Document Type and Number:

WIPO Patent Application WO/2022/202914

Kind Code:

A1

Abstract:

A spheroidal graphite cast iron comprising 2.8-3.3% of carbon, 2.5-4.0% of silicon, 0.32-0.40% of manganese, 0.020-0.030% of phosphorus, 0.020-0.035% of sulfur, 0.030-0.050% of magnesium, 0.010-0.050% of a total of lanthanum and cerium, and 0.0020-0.0050% of calcium, all in mass percentage, the remaining portion being iron and unavoidable impurities.

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Inventors:

NANJO FUMIYA (JP)
GOTO RYO (JP)
SUGIMOTO ATSUSHI (JP)
WANG LIN (JP)

Application Number:

PCT/JP2022/013605

Publication Date:

September 29, 2022

Filing Date:

March 23, 2022

Export Citation:

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Assignee:

HITACHI METALS LTD (JP)

International Classes:

C22C37/04; C21C1/10

Domestic Patent References:

WO2015034062A1	2015-03-12
WO2016051725A1	2016-04-07

Foreign References:

JP2007182620A	2007-07-19
CN103525969A	2014-01-22
JP2016503460A	2016-02-04

Attorney, Agent or Firm:

YAMAO, Norihito (JP)

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