Integral forming method for thin-walled titanium alloy part with irregularly-shaped curved surface and die

Abstract

The invention belongs to the field of sheet metal and welding processing, and relates to an integral forming method for a thin-walled titanium alloy part with an irregularly-shaped curved surface. The integral forming method aims at overcoming the defects that the shape of parts processed through the prior art is limited or the procedure and the cost are higher, and effectively ensuring the precision forming of a thin-walled component with an irregular shape. The integral forming method comprises the steps as follows: a parting surface is determined; blanking is carried out; in the preforming step, a plate is bent from a flat into a circular arc through a bending die or a bending machine; welding is carried out; in the hot shaping step, a hot shaping die is put in the inner part of a part that is processed through the assembly welding under the ordinary temperature, and the part is supported tightly due to the dead weight of the die and is heated in a hot shaping machine; and in addition, a pressing machine applies pressure to the hot shaping die when the part is heated until material is softened, so as to enable the part to reach the needed size. The integral forming method comprehensively utilizes the advantages of various processes, can obtain the large-sized thin-walled titanium alloy part with the irregularly-shaped curved surface through only two weld joints, and achieves higher surface quality of the part.

Description

technical field [0001] The invention belongs to the field of sheet metal and welding processing, and relates to a method and a mold for integral forming of thin-walled titanium alloy parts with special-shaped curved surfaces, which are suitable for precise forming of special-shaped curved surface structural parts of metal materials such as titanium alloys used in aerospace. Background technique [0002] Metal materials such as titanium alloys have become ideal structural materials in the cutting-edge fields of aerospace due to their outstanding advantages such as high strength, high temperature resistance, and corrosion resistance. At present, aerospace product parts are developing in the direction of light weight and integration, and more and more large-scale and complex special-shaped curved thin-walled components are used. The structure of such parts is irregular in shape, such as polygons or special-shaped curved surfaces. Due to the performance characteristics of titani...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the limited shape of the parts processed in the prior art or the shortcomings of high process and cost, and provide a whole body of special-shaped curved titanium alloy thin-walled parts that can effectively ensure the precision forming of irregularly shaped thin-walled parts Forming method and mold

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