A casting ring in which an inclined surface for precision casting is formed on the inner edge of a casting ring

摘要

1. Field of the Invention The claimed invention relates to: (1) Dental medicine: Precision casting of dental restorative castings, (2) Casting engineering: Special precision casting.;2. Technical Problem to be Solved by the Invention The present invention aims to solve the above-mentioned problems by developing a principle that a casting mold casting a lead circular mold into a casting ring as a casting mold for heating expansion can sufficiently and uniformly compensate casting shrinkage in each portion thereof, The present invention relates to a method for easily manufacturing a special precision casting which is in complete conformity with a circular shape.;3. Summary of the Solution of the Invention: In embedding the asbestos stand to buffer the resistance of the casting ring to the heating and expanding of the casting mold, the conventional casting ring is designed so that the casting material is not separated from the casting ring during operation By exposing the inner edge of the casting ring at both ends by making the length of the asbestos stand shorter than the length of the casting ring, the expansion and contraction of the casting mold is inhibited at the part, thereby causing contraction and deformation of the casting. In order to prevent this, The inclined surface in the direction coinciding with the expansion direction is formed so as not to hinder the expansion direction of the exposed inner surface of the casting ring when radially expanded.;4. An important use of the invention is: (1) to precisely cast a dental prosthesis casting body, (2) to easily cast a special product which requires industrially precise casting using the principle of the present invention .