A heat treatment correction method for local deformation of thin-wall superalloy precision castings

Abstract

The invention provides a heat treatment correction method for local deformation of a thin-wall high-temperature alloy precision casting. The heat treatment correction method comprises that the actualsize of the thin-wall high-temperature alloy precision casting is measured; the actual size is compared with the theoretical size of the thin-wall high temperature alloy precision casting, and the difference between the measured size and the theoretical size is obtained; the tool is installed at a position on which the size of the thin-wall high-temperature alloy precision casting is out of range,the size of the position on which the size is out of range is measured, and the length of a working area of the tooling is changed; the difference between the actual size and the theoretical size ofthe size out of range area of the thin-wall high-temperature alloy precision casting is zero, the length of the working area of the tooling is locked tightly at this time, and the thin-wall high-temperature alloy precision casting and the tooling are heat treated together; and accurate and quantitative correction of the position out of range of the thin-wall high-temperature alloy precision casting can be realized. According to the heat treatment correction method, the accurate correction is realized, and simultaneously correcting at one time is carried out, thus the heat treatment times are reduced and the research cost is reduced, and the research and development time are shortened.

Description

technical field [0001] The invention relates to the field of high-temperature alloy precision casting, in particular to a method for rectifying local deformation and heat treatment of a thin-walled high-temperature alloy precision casting. Background technique [0002] The aerodynamic layout of the new generation of aero-engines is becoming more and more advanced, which puts forward more and more stringent requirements for manufacturing, requiring a large number of integrated, thin-walled and complex structures, and complex thin-walled superalloy castings are due to high temperature during the casting process. The alloy liquid solidifies and shrinks, causing the local internal stress of the casting to be very large, which in turn leads to the out-of-tolerance of the position and size of the casting, which often cannot meet the design requirements. Therefore, effective measures must be taken to correct casting deformation and provide support for the development of high-perfor...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this patent is that it still has not achieved precise quantitative deformation control, and it is difficult to directly apply it to high-temperature alloy castings that require higher dimensional accuracy.

Therefore, this method is not suitable for deformation control of complex thin-walled superalloy castings for aero-engines that require extremely high comprehensive performance.

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