Wax part forming die for casting

Abstract

The invention provides a wax part forming die for casting. The die comprises a die body; the die body is provided with a wax part body groove and a die head which is in a shape of Chinese character 'san; and the die head in a shape of Chinese character 'san' is disposed at one end of the wax part body groove. The die is characterized in that concave portions are formed in the two sides of the diehead in a shape of Chinese character 'san'; the die head in a shape of Chinese character 'san' is in an inwards concave mode through the concave portions; groove convex strips are disposed on the diehead in a shape of Chinese character 'san'; three grooves are formed after forming on the wax part die head through the groove convex strips; and a cup opening is formed in the direction, opposite tothe die body, of the die head in a shape of Chinese character 'san'. The wax weight of the die head is reduced through the inwards concave design, the loss of the wax part can be reduced by 17% or above; the cast part die head is lighter through the inwards concave design, the yield of the cast part die head is improved by 15% or above compared with the original yield, pulp applying at the position of the cup opening is easier than that of an original die head in the shell die making process through the inwards concave mode of the product, the scrap due to insufficient strength of a shell dieis reduced, and the strength of the shell die is greatly improved.

Description

technical field [0001] The invention relates to the field of precision casting, in particular to a wax mold for casting. Background technique [0002] At present, in the field of precision casting, it is necessary to manufacture wax pieces as casting molds. When wax pieces are manufactured, molding molds are used to manufacture them, and three-character die heads are used in the molding molds to inject wax and shape them. The original three-character die head is usually a cylinder, the weight of the die head is relatively heavy, and the cost of material yield is low. The cost of materials in the process of making shell molds is relatively high, and the large gate cup affects the efficiency and cost of the overall tree forming process. As a result, the mouth of the cup is not easy to hang pulp during the dipping process after the die is assembled into the product, resulting in uneven hanging of the die head, and insufficient strength when the thickness is different. When tra...

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