Forming method of high-precision hyperboloid titanium alloy cylinder

Abstract

The invention discloses a forming method of a high-precision hyperboloid titanium alloy cylinder and belongs to the technical field of cylindrical part forming. The method comprises the steps that a titanium alloy plate is cut according to the plane unfolding size of the cylinder, and the cut plate is rolled into a cylindrical part by adopting a roll welding process; the obtained cylindrical partis placed outside an expansion valve of a stress relaxation forming tool, and then an expansion core is placed into the expansion valve; the assembled cylindrical part, expansion valve and expansion core are placed in heat treatment equipment, and heating is carried out for stress relaxation forming; and the temperature is reduced after forming is finished to obtain the high-precision hyperboloidtitanium alloy cylinder. By adopting the stress relaxation forming mode of the expansion core and the expansion valve, the forming thought limitation of the cylindrical structural part is broken through, the technical problem that the quality of the titanium alloy cylindrical structural part is difficult to control in the semi-forming process is successfully solved, the quality control of the product can be improved, the stability of the product is improved, the production cost is reduced, a brand-new optimized process method is provided for the production of the titanium alloy cylindrical structural part, and the method is suitable for the cylinder forming process.

Description

technical field [0001] The invention relates to a method for forming a high-precision hyperboloid titanium alloy cylinder, and belongs to the technical field of cylinder forming. Background technique [0002] Titanium alloy cylindrical parts are ubiquitous and particularly important in missiles to complete the mission of striking targets more efficiently. As an important part of the projectile body, the structural performance and dimensional accuracy of the cylindrical structural part determine the flight performance of the missile. Therefore, the high-yield forming technology of this high-precision, double-curvature titanium alloy cylinder is particularly important. High-speed missiles have strict requirements on structural performance and dimensional accuracy. On the one hand, the traditional split-half forming method requires high matching accuracy and it is difficult to ensure this dimensional accuracy; on the other hand, traditional forming requires multiple weldings, w...

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Problems solved by technology

[0003] In order to solve the technical problems of difficult repair after cutting, long period, large number of welds and high welding cost in the existing forming meth...

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