A forming device and method for a thermoplastic glass fiber reinforced aluminum alloy laminate
A glass fiber and aluminum alloy layer technology is applied in the field of metal matrix composite material processing and forming, which can solve the problems of unsuitable preheating of plates for thermoplastic glass fiber reinforced aluminum alloy laminates, inability to control the cooling rate, and cracking between layers during processing. , to achieve the effect of being suitable for mass production, high springback, and shortening the forming cycle
Inactive Publication Date: 2015-09-16
HUNAN UNIV
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Problems solved by technology
For example, the invention patent application number is 201310355871.0, although the forming method of a titanium alloy thin-walled shell solves the springback problem when forming a thin plate, it cannot preheat the plate without a heating device and is not suitable for thermoplastic glass fiber reinforced aluminum alloys. Processing of laminates; such as the invention patent application number of 200910062979.4, the magnesium alloy plate warm forming method can improve the formability of the material, but the heating efficiency is low and the cooling rate cannot be controlled uniformly, so when processing thermoplastic glass fiber reinforced aluminum alloy Laminates can lead to processing defects and cracking between layers
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[0049] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0050] The study found that compared with the traditional electromagnetic forming technology, there are special requirements on the process parameters when processing thermoplastic glass fiber reinforced aluminum alloy laminates. For example, if the time of heat preservation during processing, the temperature of heat preservation, the cooling rate, and the parameters of the mold are not selected properly, it will cause defects such as wrinkling of the laminate, cracking between layers, and fiber bending, which will affect the pe...
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Abstract
The invention discloses a forming device and method of a thermoplasticity glass fiber reinforcement aluminum alloy laminate plate. The device comprises a sealing side pressing ring (1), a discharging coil (3), a coil frame (4), bolts (5 and 11), a lower pressing plate (6), a base (7), a resistance wire (9), an upper pressing plate (10) and a hydraulic cylinder (12). The bolts (5 and 11) and the bottom of the upper pressing plate (10) are connected in a welding mode. The hydraulic cylinder (12) is fixed on the upper pressing plate (10). A working arm of the hydraulic cylinder (12) penetrates through a center hole of the upper pressing plate (10) and extends downwards. The lower end of the working arm of the hydraulic cylinder (12) is fixedly connected with the sealing side pressing ring (1). A stroke limiting block (13) is welded to the working arm. An exhaust hole (8) is formed in the side wall of the sealing side pressing ring (1). The device can preheat the laminate plate and control the cooling speed during cooling of the laminate plate, accordingly, residual heat stress caused by different contraction rates of plate pieces is released, and cracking between layers is avoided.
Description
technical field [0001] The invention belongs to the field of processing and forming of metal matrix composite materials, and in particular relates to a forming method of a thermoplastic glass fiber reinforced aluminum alloy laminate. Background technique [0002] Fiber Reinforced Metal Laminates (FRML) is a special metal matrix composite material, which is alternately laminated by metal alloy sheets and fiber / resin layups by bonding technology. Fiber laminates have excellent comprehensive properties, and glass fiber reinforced aluminum alloy laminates are currently the most used one. It not only has the advantages of high specific strength, specific stiffness, good plasticity, fracture performance and impact resistance of metal materials, but also retains the good fatigue resistance of fiber reinforced materials, and its quality is relatively light, which meets the future lightweight requirements. Direction of development. In addition, fiber-reinforced metal laminates also...
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IPC IPC(8): B21D26/14
Inventor 孙光永崔俊佳李光耀单业奇
Owner HUNAN UNIV