Aviation single crystal blade non-metal contact unshelling tool

Abstract

The invention discloses an aviation single crystal blade non-metal contact unshelling tool which comprises a plurality of stacked unit placing frames; each unit placing frame comprises a base, at least one positioning plate, a connecting rod and a hoisting column, the bases and the positioning plates are connected through the connecting rods, the adjacent unit placing frames are connected through the hoisting columns, the end of the lifting column on the uppermost layer is fixedly connected with a lifting ring, and the bases and the positioning plates are made of non-metal materials. The unit placing frames are arranged in a stacked mode, the stacked number can be automatically determined according to the number of castings needing to be treated, and the application range is wide; a non-metallic material is used as the placing rack for placing the castings, so that recrystallization caused by collision between the castings and the tool is avoided; and the castings are independently placed in the unit placing frames, and the castings are not in contact with one another, so that the unshelling time is shortened, and the unshelling efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of shelling single crystal blades, in particular to a non-metallic contact shelling tool for aviation single crystal blades. Background technique [0002] As the temperature before the turbine of the aero-engine continues to increase, high-temperature single-crystal blades will be used more and more in the engine. In the production process of single crystal blades, the shell making process is an indispensable step in investment casting. At present, the most commonly used shelling methods at home and abroad are vibration shelling and high-temperature, high-pressure alkaline solution method. Because of the material characteristics of single crystal blades, high-temperature, high-pressure alkaline solution method can only be selected, and the supporting shelling equipment is high-temperature pressure shelling kettle. , using high-concentration NaOH solution at 180°C-240°C and Al in the mold shell 2 o 3 A che...

AI Technical Summary

Problems solved by technology

The existing shelling frame needs to be soaked in the high temperature and high pressure alkaline solution, so most of the frames are made of 316L material, and the castings are stacked disorderly in the shelling frame, the main disadvantages are: 1. The exposed single crystal leaves There will be bumps and scratches between the single crystal blades and the shelling frame, which will easily cause the recrystallization of the single crystal blades and lead to the scrapping of the casting; Increased shelling cycle together

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