Heat treatment tooling and process for stress relief correction deformation heat treatment of titanium alloy in high temperature state

Abstract

The invention relates to stress-eliminating distortion-correcting thermal treatment tooling of titanium alloy at high temperature. According to the invention, the upper surface of a clamping board base is adhered to the lower surface of a part to be thermally treated; two ends of the clamping board base are provided with positioning blocks; an inverted U-shaped fixing frame is movably connected with the clamping board base through pins; a power supporting column is arranged below the fixing frame; a clamping board is connected below the power supporting column; the shape of the lower surface of the clamping board is consistent with the shape of the upper surface of the part to be thermally treated; the lower surface of the clamping board is in clearance fit with the upper surface of the part to be thermally treated; the thermal expansion coefficient of the power supporting column is greater than the expansion coefficient of other parts of the tooling. The invention further discloses a novel stress-eliminating thermal treatment process which is capable of effectively eliminating welding stress, correcting part shape and guaranteeing the theoretical shape of titanium alloy parts when being used for putting pressure on workpieces at high temperature.

Description

technical field [0001] The invention relates to a titanium alloy high-temperature state stress-relieving stress-correcting deformation heat treatment tool and process, which belongs to a heat treatment method. Background technique [0002] At present, in the field of stress relief heat treatment of titanium alloys, tooling and fixture structures are used, and materials with similar properties to titanium alloys are selected to manufacture heat treatment tooling. , although the stress of the workpiece can be released, the deformation cannot be completely eliminated at one time. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a heat treatment tool and process for eliminating stress and correcting deformation of titanium alloy under high temperature state. Novel stress-relief heat treatment method for theoretical shape of alloy parts. [0004] In order to solve the above problems, the specific technical solution o...

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Problems solved by technology

[0002] At present, in the field of stress relief heat treatment of titanium alloys, tooling and fixture structures are used, and materials with similar properties to titanium alloys are selected to manufacture heat treatment tooling. , although the workpiece stress can be released, the deformation cannot be completely eliminated at one time

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