Method and an apparatus for producing shaped bodies from particu

Details Method and an apparatus for producing shaped bodies from particu Method and an apparatus for producing shaped bodies from particu

1987-05-18

1988-12-20

Godici, Nicholas P.

Metal founding

Process

Shaping a forming surface

164 40, 1641601, 164195, B22D 1524

Patent

active

047919744

ABSTRACT:
In a method of operating an apparatus with a mold chamber (8) being supplied with fluidized mold sand (2) from a supply chamber (1) under air pressure applied through suitable air channels (3), and in which the pressure in the supply chamber (1) is increased gradually from a low to a high value to avoid turbulences in the initial filling stage and ensuing weak spots in the molded article, while at the same time achieving a short total filling time and a high degree of compaction during the final stage, the new feature is that vacuum is applied through air-permeable mold chamber walls (9,10), preferably before increasing the pressure in the supply chamber (1), thus avoiding the formation of air pockets in depressions in the mold chamber walls, that could otherwise cause reduced compactness and density in protruding parts of the shaped body (not shown) being formed in the mold chamber (8).

REFERENCES:
patent: 2882565 (1959-04-01), Selby
patent: 3965961 (1976-06-01), Gunnergaard
patent: 4182395 (1980-01-01), B/u/ hler
patent: 4593740 (1986-06-01), B/u/ hler

Affiliated with

Also associated with

Rating

Method and an apparatus for producing shaped bodies from particu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and an apparatus for producing shaped bodies from particu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and an apparatus for producing shaped bodies from particu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1905067