Forging and molding process method for titanium alloy tubular piece

Abstract

The invention discloses a forging and molding process method for a titanium alloy tubular piece, which belongs to the technical field of forging and pressing, and is particularly suitable for tubular forging and molding of TC9 and TC11 titanium alloy materials. The method is mainly technically characterized in that methods such as pre-boring of guide through holes, hole expanding, drawing, binding and reshaping, and the like are adopted, and meanwhile, the heating temperature and heat preserving time of a TC9 or TC11 titanium alloy are controlled, so that crystal grains of the TC9 or TC11 titanium alloy can be prevented from being coarsened, the metallographic structure and mechanical performance of the TC9 or TC11 titanium alloy are prevented from being influenced, the consumption of the titanium alloy materials are lowered effectively, and the cost is saved; meanwhile, folding, corrugation and even cracks of inner holes are avoided; and the process method has the characteristics of easiness, high practicability, high product yield, and the like.

Description

technical field [0001] The invention relates to a forging forming process method of a titanium alloy tubular part, which belongs to the technical field of forging and is particularly suitable for performing tubular forging forming on TC9 and TC11 titanium alloy materials. Background technique [0002] Titanium alloy has the advantages of low density, corrosion resistance and high strength, and has been widely used in military and civilian products. Heat-strength titanium alloys refer to titanium alloys with high high-temperature strength, such as TC9 and TC11 titanium alloys. Due to their high high-temperature strength, thermal processing is more difficult, especially for tubular parts. . In the background technology, currently domestic processing of heat-strength titanium alloy tubular parts such as TC9 and TC11 generally adopts mechanical cutting or skew rolling. When mechanical cutting is used to process titanium alloy tubular parts, due to the high temperature strength...

AI Technical Summary

Problems solved by technology

When mechanical cutting is used to process titanium alloy tubular parts, due to the high temperature strength of TC9 and TC11 titanium alloys, it is very difficult to drill holes, especially deep holes, and the material consumption is large. Due to the high price of titanium alloy materials, This leads to a substantial increase in cost; when using the cross-rolling processing method to process titanium alloy tubular parts, special cross-rolling processing equipment is required, especially during the rolling process, the inner holes of TC9 and TC11 titanium alloy tubular parts are prone to folded wrinkles pleats or even cracks

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