Die-casting machine

Details Die-casting machine Die-casting machine

1992-01-13

1993-04-13

Batten, Jr., J. Reed

Metal founding

Means to shape metallic material

Pressure shaping means

164337, B22D 1710, B22D 1720

Patent

active

052013588

ABSTRACT:
In a die-casting machine for producing castings from metals or metal alloys, which castings have a low content of gas, pores and oxides, melt is drawn by means of a vacuum out of a holding device (10) via a suction tube (11) into a casting chamber (3). A casting plunger (7) closes the inlet opening (16) to the casting chamber (3). In order to achieve as low as possible mechanical surface pressure due to flow of the melt, and fluviatile erosion of the die-side end of the inlet opening (16), and thus avoid high wear of this inlet edge or of the casting chamber with casting plunger, a planar or linear inlet cross-section (24, 27) as well as a curved deflection surface (20) on the casting plunger (7) are provided.

REFERENCES:
patent: 4476911 (1984-10-01), Lossack et al.
patent: 4660614 (1987-04-01), Spriestersbach et al.
Koch, "Jahresubersicht Druckguss (20. Folge) Teil 2: Giessen, Schmelzen, Technologie," Giesserei 70 (1983), No. 19, pp. 517-518.
Spriestersbach et al., "Vergutbare Aluminium-Gussstuke-Hergestellt mittels eines neu entwickelten Vakuum-Druckgiessverfahrens," Giesserei 69 (1982), No. 19, pp. 521-527.

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