B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
22/145
B22C 9/00 (2006.01) B22C 9/10 (2006.01)
Patent
CA 1075876
ABSTRACT In foundry manufacture of metallic castings it is customary to employ inserts to form elongate ducts whether rectilinear curved or branched and whether of regular cross-section or varying cross-section including enlarged cavities. Such inserts have mainly been formed of core-sand well known for its foundry use. Whilst being readily manipulated into required shapes core sand has several disadvantages including the problems associated with removal of processing gases during casting operation, removal of the insert without fracture, additional unwanted insert portions leaving unwanted internal or surface discontinuities or cavities later to be filled and machine ground. Instead a core insert is provided which has a wire formed outer tubular casing and an internal wire structure, the core insert being removable in stages firstly removing a central longitudinal wire, then any intermediate layer and finally uncoiling the outer tubular casing which has preferably previously been wound in such manner and of such diameter wire as to avoid so far as possible any exaggerated surface undulations.
275945
LandOfFree
Core for the making of castings equipped with slender ducts does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Core for the making of castings equipped with slender ducts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Core for the making of castings equipped with slender ducts will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-62982