A kind of manufacturing method of ceramic core free end wax cap

Abstract

The invention discloses a method for manufacturing a wax cap at the free end of a ceramic core, comprising the following steps: designing the free end of the ceramic core; At the wax cap, process the space required by the size of the wax cap; put the ceramic core into the casting wax mold, inject wax into the mold and keep the pressure; take out the wax mold with the ceramic core. The invention replaces the previous method of pressing the wax mold and then manually brushing the wax to make the free-end wax cap. The method of the invention reduces production time. At the wax cap at the free end of the ceramic core corresponding to the inner cavity of the casting wax mold, process the space required by the size of the wax cap, put the ceramic core into the casting wax mold, inject wax into the mold and keep the pressure, and the mold is pressed The wax cap is more regular, the size of the wax cap and the thickness of the wax layer are more consistent, and the gap between the corresponding ceramic core and the mold shell is uniform and controllable, which can reduce the core breaking rate during pouring.

Description

technical field

[0001] The invention belongs to the field of investment precision casting, and in particular relates to a method for manufacturing a wax cap at the free end of a ceramic core. Background technique

[0002] At present, the free end of the ceramic core is generally made after the wax mold is pressed and before the module is assembled. The free end is made by brushing or waxing. The operator brushes the wax manually, which is simple, convenient and fast. However, this method has the following problems: when the wax layer is brushed manually, the thickness is affected by the temperature of the wax liquid, viscosity, coating properties, operator techniques, etc., and the free end will be made irregularly, and the ceramic cores made by different operators and different castings will be free. There are differences in the thickness and size of the ends. After dewaxing, the gap between the ceramic core and the casting formwork will be uneven, which may cause core brea...

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