Direct light-curing fabrication method of hollow blade ceramic cast

Abstract

The invention relates to a method for directly making a hollow blade ceramic mold based on a photo-curing process. The method is as follows: firstly, ceramic powder and pre-mix liquid are evenly mixed so as to make ceramic slurry; secondly, according to a hollow blade model, a hollow blade mold model containing a gating system is obtained, and the ceramic slurry is directly made into a ceramic mold biscuit on a photo-curing forming machine according to the hollow blade mold model; then, the ceramic mold biscuit is dewatered to obtain a dry ceramic mold; finally, the dry ceramic mold is placedin a high-temperature baking furnace so as to carry out degreasing and sintering, thereby making the hollow blade ceramic mold. The ceramic mold can be used in the casting of a hollow blade, and replaces a multi-layer ceramic shell and core manufacturing process adopted in the prior investment casting. The method does not need the processes of investment pattern making, slurry coating and sand spreading adopted in the prior process, and has the characteristics of simple process, short cycle, low cost and quick returns, etc.

Description

A direct manufacturing method of light-cured ceramic mold for hollow blades technical field The invention relates to the technical field of precision casting, in particular to a method for directly manufacturing hollow blade ceramic molds through light curing, mainly including the preparation of ceramic slurry, the generation of three-dimensional models of hollow blade molds, and the light curing of ceramic mold blanks for hollow blades Shaping, drying of ceramic casting green bodies and degreasing and sintering processes of ceramic casting molds. Background technique With the development of industry, energy problems have become increasingly prominent, and improving energy utilization efficiency has become the only way for industrial development. Industrial gas turbine is one of the most efficient and clean energy power systems at present, but its manufacturing technology is extremely complicated, and the blade manufacturing technology is one of the key technologies of gas...

AI Technical Summary

Problems solved by technology

Due to the positioning error and assembly error in the process of assembling the ceramic core to the wax mold, and the poor stability at the same time, as well as the time-consuming, cumbersome process and high cost of subsequent wax injection, coating, sanding, and dewaxing processes, it directly affects The manufacturing cycle and cost of the ceramic shell affect the final casting manufacturing cycle, cost and production efficiency

At present, using the traditional production method, the yield of the blade is only 10%. Such a low yield greatly increases the production cost of the parts and reduces the production efficiency.

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