Title:
SPHERICAL GRAPHITE CAST IRON, CAST ARTICLE AND AUTOMOBILE STRUCTURAL COMPONENT COMPRISING SAME, AND METHOD FOR MANUFACTURING CAST ARTICLE COMPRISING SPHERICAL GRAPHITE CAST IRON
Document Type and Number:
WIPO Patent Application WO/2017/164382
Kind Code:
A1
Abstract:
A spherical graphite cast iron characterized by satisfying the expressions N(5-) ≥ 250, N(5-20)/N(5-) ≥ 0.6, and N(30-)/N(5-) ≤ 0.2, where N(5-) (particles/mm2) is the number of graphite particles having an equivalent circle diameter of 5 µm or greater, N(5-20) (particles/mm2) is the number of graphite particles having an equivalent circle diameter of 5 µm to less than 20 µm, and N(30-) (particles/mm2) is the number of graphite particles having an equivalent circle diameter of 30 µm or greater among graphite particles observed in an arbitrary cross section (in at least 1 mm2).
Inventors:
WANG LIN (JP)
Application Number:
PCT/JP2017/012066
Publication Date:
September 28, 2017
Filing Date:
March 24, 2017
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
C22C37/04; C21C1/10
Foreign References:
| JPS64246A | 1989-01-05 | |||
| JPH10317093A | 1998-12-02 | |||
| JP2001347357A | 2001-12-18 | |||
| JP2007000881A | 2007-01-11 | |||
| JPS61137665A | 1986-06-25 | |||
| US5205856A | 1993-04-27 |
Other References:
TORJORN SKALAND: "A New Method For Chill And Shrinkage Control in Ladle Treated Ductile Iron", FOUNDRY TRADE JOURNAL (UK, vol. 178, no. 3620, 2004, pages 396 - 400
See also references of EP 3434799A4
See also references of EP 3434799A4
Attorney, Agent or Firm:
TAKAISHI Kitsuma (JP)
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