Forging process of tc4 alloy blade

Abstract

The invention relates to a forging process of TC4 alloy blades, comprising the following steps: hydrogen charging treatment, mechanical processing, sand blowing treatment for the first time, lubricant spraying, mold preheating, forging, flash removal, sand blowing treatment for the second time, and finally Clean the surface of the solid-state hydrogenation titanium alloy blade forging, put it into a tubular solid-state hydrogenation furnace, heat it to 700-750°C, and then cool it to room temperature. Compared with the prior art, the forging process of the TC4 alloy blade provided by the present invention, due to the solid state hydrogenation treatment of the TC4 alloy, adds 0.1 to 0.4% hydrogen element to the titanium alloy blade blank, and optimizes the forging process parameters , improving the formability of titanium alloy blades, lowering the forging temperature, thereby reducing mold deformation and mold wear, thereby improving the dimensional accuracy of titanium alloy blades, and reducing costs at the same time.

Description

technical field [0001] The invention relates to a forging process of TC4 alloy blades. Background technique [0002] In recent years, with the development of new aircraft in the direction of lightweight, high performance and low cost, higher requirements have been put forward for its power system. The working conditions of turbofan aeroengine fan blades are relatively harsh, and titanium alloys have a series of advantages such as high specific strength, corrosion resistance and high temperature resistance, which makes titanium alloys widely used in the field of fan blades. Improving the mechanical properties of titanium alloy blades can improve the cycle parameters of the engine, and can also reduce the weight of the blades. These are effective ways to increase the thrust-to-weight ratio of the engine. However, titanium alloy is a difficult-to-deform material, and the complexity of the shape of the fan blade leads to poor forging process and high forging temperature, which ...

AI Technical Summary

Problems solved by technology

However, titanium alloy is a difficult-to-deform material, and the complexity of the shape of the fan blade leads to poor forging process and high forging temperature, which makes the energy consumption of the blade forging process larger, and has high requirements on the performance of the forging die. Isothermal forging generally requires The use of nickel-based high-temperature alloys greatly increases the cost of molds