A Forging Method for Improving Microstructure Uniformity of Engine Titanium Alloy Blade Disc
A technology of titanium alloy and blade disk, which is applied in the field of forging, can solve the problems of unqualified flaw detection and unstable physical and chemical properties, and achieve the effects of ensuring quality, improving mechanical properties, and improving the uniformity of the structure
Active Publication Date: 2022-05-27
SHAANXI HONGYUAN AVIATION FORGING
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is: to solve the problem of unqualified flaw detection and unstable physical and chemical properties of the blank blank in the middle of the forging after forging
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Embodiment Construction
[0014] The present invention will be further described in detail below through specific embodiments.
[0015] The embodiment of the present invention provides a method for forming a blank blank of a blade disk of an engine engine. The method adopts the following steps:
[0016] 1) Use a heating temperature that is 20°C higher than conventional forging to carry out square forming ((conventional forging temperature β-45°C));
[0017] 2) During the forging process, the upsetting is first riveted and then turned over for upsetting;
[0018] 3) The new method of alternate direction is adopted for lengthening;
[0019] For example, in the above-mentioned forging forming process, the bar is forged with a press. When feeding, the first pass is pressed down and the second pass is dislocated to avoid repeated uneven deformation of the same part.
[0020] The heating temperature of the receiving side is 20°C higher than the heating temperature of conventional titanium alloys.
[0021]...
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The invention relates to a forging method for improving the microstructure uniformity of a titanium alloy blade disc of an engine, which is characterized in that step 1: receiving a titanium alloy bar, designing the width b and height a of the titanium alloy bar, and harvesting the round bar Cuboid; Step 2: Heat the titanium alloy with a conventional heating system, carry out forging, first elongate to the target size with a preset height-width ratio, and then upsetting to the first preset height h; Step 3: Continue to use conventional heating The system heats the titanium alloy, exchanges the direction for elongation and forging, and then upsetting, so that the deformation of the forging is uniform; step 4: alternately perform step 2 and step 3, and cycle for many times; step 5: divide the two fires for upsetting and rounding. The invention can effectively improve the uniformity of the structure and solve the problem of a large number of unqualified flaw detection in batch production; at the same time, the mechanical properties of the forging are improved to ensure the quality of the product; the number of forging fires is reduced, the cost is saved, and the production efficiency is improved.
Description
technical field [0001] The invention relates to the field of forging, in particular to a new forging method for improving the structure uniformity of an engine blade disk. Background technique [0002] Titanium alloy blade disc is an important part of aircraft engine. The structure and performance of final disc forgings are greatly affected by the intermediate blank. Therefore, in the forging process, the uniformity of the intermediate blank is required to be higher. Due to the uneven chemical composition of the bar material, the intermediate blank bar needs to be upsetting and forging repeatedly to improve the structure. [0003] For some near-α-type titanium alloys, it is easy to deform unevenly and crack. Therefore, in the forging process, it is necessary to control not only the heating temperature but also the amount of deformation and the heat of deformation during deformation, so as to avoid uneven deformation and large temperature difference in local areas, which mak...
Claims
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IPC IPC(8): B21J5/00B21J5/08B21J1/06B21K3/04
CPCB21J5/002B21J5/08B21J1/06B21K3/04
Inventor 高超平刘翠侠牛伟鹏王伟赵磊
Owner SHAANXI HONGYUAN AVIATION FORGING