Casting method and casting mold

Details Casting method and casting mold Casting method and casting mold

2006-04-11

2006-04-11

Tran, Len (Department: 1725)

Metal founding

Process

Shaping liquid metal against a forming surface

C164S312000, C164S121000, C164S137000

Reexamination Certificate

active

07025114

ABSTRACT:
A casting method and casting mold able produce a casting having an island and connecting portion is disclosed. A casting having a body, an opening provided so as to pass through the body, an island arranged separated from the body in the opening, and a connecting portion joining the island and body is cast using a casting mold. The casting mold is provided with a body gate connected to a body cavity for forming the body and an opening gate connected to an island/connecting portion cavity for forming the island and the connecting portion. The body gate and opening gate are connected to a runner through body pin gates and opening pin gates; in addition, a die casting mold able to suitably change between a three-part mold structure and a two-part mold structure to cast a die casting is disclosed. The three-part mold structure die casting mold, a movable mold, a first cavity, a connection sleeve, a first runner, a pin gate, and an extension sleeve. When forming the two-part mold structure die casting mold, the fixed mold is removed, the extension sleeve insert inserted in the extension sleeve is removed, and the pin gate is filled by a pin gate insert. Further, the intermediate mold insert and the movable mold insert are replaced to form the two-part mold structure die casting mold forming the second cavity and second runner moving the movable mold with respect to the intermediate mold.

REFERENCES:
patent: 3137904 (1964-06-01), Steinman et al.
patent: 3575233 (1971-04-01), Mahle et al.
patent: 5323840 (1994-06-01), Usui et al.
patent: 6460596 (2002-10-01), Yamaguchi et al.
patent: 58-199131 (1983-11-01), None
patent: 3-136822 (1991-06-01), None

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