Manufacturing method of titanium alloy aviation joint forge piece

Abstract

The invention provides a manufacturing method of a titanium alloy aviation connector forge piece. The manufacturing method comprises the steps that a bar is blanked, and the bar is divided and drawn out; the blank is heated at the constant temperature of T beta-(30-50 DEG C) and then transferred into a die to be forged, the transferring time is smaller than or equal to 120 s, the forging time is smaller than or equal to 160 s, the pressing speed of a pre-forging press is 4-12 mm / s, the temperature of the blank at the beginning of forging is larger than or equal to 850 DEG C, the temperature of the blank at the end of forging is larger than or equal to 810 DEG C, and air cooling is conducted after forging; the blank is heated at the constant temperature of T beta + (20-40 DEG C) and then transferred into a die to be forged, the forging time is smaller than or equal to 160 s, the pressing speed of a finish forging press is 4-12 mm / s, the temperature of the blank is larger than or equal to 900 DEG C after forging is finished, the temperature of the blank is larger than or equal to 880 DEG C after forging is finished, and air cooling is conducted after forging. According to the method, the bar is adopted as the raw material, the forming difficulty is reduced, the forging process is optimized, the performance of the forge piece is guaranteed, surface treatment is not needed after blank making and pre-forging, the production process is saved, and the efficiency of batch production can be improved.

Description

technical field [0001] The invention relates to the technical field of die forging, in particular to a method for manufacturing a titanium alloy aviation joint forging. Background technique [0002] With the rapid development of aerospace and transportation industries, the application types and quantities of titanium alloy die forgings for aircraft have increased, such as figure 1 and figure 2 It shows an aviation joint with relatively complex shape features. The main body of the aviation joint forging is in the shape of a plate with one end wide and one end narrow. Two convex ribs 1 distributed in a Y shape are provided on the upper surface, and a plurality of convex ribs 1 are provided on the edge. The edge 2 is provided with a circular semicircular boss 3 in the middle, and an inwardly recessed groove is provided on the lower surface. The aviation joint is generally formed by die forging and then machined. Since the main body is in the shape of a plate, a rectangular s...

AI Technical Summary

Problems solved by technology

The aviation joint is generally formed by die forging and then machined. Since the main body is in the shape of a plate, a rectangular slab is used as the forging blank, which is difficult to form.

[0003] In addition, in the existing production process, surface treatment is required after billet making, deburring and surface treatment are required after pre-forging, and surface treatment is required after final forging. Although these processes are simple, the transfer and operation still take a long time. Especially in the mass production process, it has a great influence on the production efficiency of forgings

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