Metal founding – Process – Shaping a forming surface
Patent
1995-08-11
1998-04-07
Batten, Jr., J. Reed
Metal founding
Process
Shaping a forming surface
164 34, B22C 904
Patent
active
057353360
ABSTRACT:
The investment casting process utilizes an investment assembly that includes one or more vents in each casting mold. Vents facilitate the extraction of the pattern material while preventing expansion of the pattern material to the extent that mold fracture or cracking results. The vents can be formed by incorporating within the patterns of articles to be cast one or more protrusions that cause the pattern to deviate from the size and shape of the article to be cast. After assembly of one or more patterns to a riser to form a cluster, the cluster is coated with a refractory material and the refractory material is removed from the protrusions either before the refractory dries or after the refractory dries, thus producing the vents.
REFERENCES:
patent: 4066116 (1978-01-01), Blazek et al.
patent: 4651799 (1987-03-01), Chandley
patent: 4730657 (1988-03-01), Carson et al.
patent: 4844144 (1989-07-01), Murphy et al.
patent: 5176188 (1993-01-01), Quinn et al.
patent: 5391460 (1995-02-01), Dougherty et al.
Batten, Jr. J. Reed
Johnson & Johnson Professional Inc.
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