Manufacturing method of aluminum-lithium alloy circular-disc-shaped forging piece

Abstract

The invention discloses a manufacturing method of an aluminum-lithium alloy circular-disc-shaped forging piece. A forging piece which is subjected to primary fire forging is equally divided and the equally-divided forge piece is subjected to secondary fire forging, so that transformation amounts in three directions (namely, the longitudinal direction, the horizontal direction and the height direction) are more balanced, and a three-direction performance unbalance caused by over-great transformation amount of the forging piece in a single direction is avoided; and meanwhile, a process manner of equal sawing and two times of forging is adopted so that a sheet-layer-shaped tissue of a zirconium compound contained in a forged alloy tissue is not formed; and therefore, under the condition of guaranteeing transverse and vertical performances of the forging piece, the height-direction elongation coefficient of the forging piece is greatly improved and the uniformity of the height-direction elongation coefficient is effectively improved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy processing and manufacturing, in particular to a method for producing an aluminum-lithium alloy disc-shaped forging. Background technique [0002] With the vigorous development of economic construction in recent years, aerospace and other machining fields are also making progress, and aluminum-lithium alloy disc-shaped forgings are a common machining profile, and their production technology is becoming more and more widely used. Pay attention to. [0003] At present, the production process of aluminum-lithium alloy disc-shaped forgings is usually: ingot heating → forging → machining → quenching → aging treatment → sampling → physical and chemical testing. Among them, in the forging process, different processing methods such as secondary upsetting or tertiary upsetting are usually adopted according to different processing requirements. However, although the existing production process of a...

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Problems solved by technology

However, although the existing production process of aluminum-lithium alloy disc-shaped forgings can meet the basic production and processing needs, the zirconium compounds in the products processed by this conventional forging method will be lamellar in the forging height direction The distribution greatly reduces the high-direction elongation of the formed forging, resulting in uneven distribution of the high-direction elongation of the forging, and a low pass rate of high-direction mechanical properties, which adversely affects subsequent related processing operations.

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