Ultralow-temperature flexible forming device for complex thin-walled aluminum-lithium alloy structural part
A technology of thin-walled structural parts and aluminum-lithium alloys, applied in forming tools, metal processing equipment, manufacturing tools, etc., can solve problems such as difficult-to-form shape components, prone to micro-cracks, and poor fracture toughness
Inactive Publication Date: 2021-04-20
BEIJING SATELLITE MFG FACTORY
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The purpose of the present invention is to combine the technical advantages of multi-point forming and low-temperature medium forming, and to provide a new phenomenon of plasticizing and strengthening aluminum-lithium alloys at ultra-low temperatures to provide a multi-point punch liquid-filled deep-drawing forming device and method. An ultra-low temperature forming device and forming manufacturing method for aluminum-lithium alloy thin-walled structural parts are developed to solve the defects of aluminum-lithium alloy complex thin-walled structural parts that are difficult to form complex-shaped components during room temperature forming, poor fracture toughness, and prone to microcracks during room temperature forming. Large springback in forming, difficulty in guaranteeing shape and dimension accuracy of components
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[0084] Such as Figure 1-Figure 7 As shown, the forming device includes a die base 1, a die cover 2, a double-layer low-temperature resistant sealing ring 5, a first cold insulation layer 6, an ultra-low temperature circumferential sealing ring 7, a multi-point punch head 8, and a punch connection Column 9, punch body 10, first blankholder ring 11, second blankholder inner ring 12, second cold insulation layer 14, aluminum-lithium alloy plate 15, low-temperature forming die pad A16, die seat pad B17, the third cold insulation layer 18, the fourth cold insulation layer 19;
[0085] The die set 2 is a hollow cylinder with an open bottom and the inner cavity of the die set 2, the cavity surrounded by the multi-point punch head 8 of different shapes and the aluminum-lithium alloy plate 15 together form a high-pressure and low-temperature chamber of different shapes. Liquid-filled chamber 3;
[0086] Between the low-temperature die forming cushion block A16 and the die seat cushi...
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Abstract
The invention relates to the technical field of special forming manufacturing processes of complex thin-walled aluminum-lithium alloy structural parts, in particular to an ultralow-temperature flexible forming device for the complex thin-walled aluminum-lithium alloy structural part. The thin wall refers to that the wall thickness of the structural part is not larger than 5 mm, and the complex structural part refers to that the shape of the structural part is of spatial curved surface structure. The ultralow-temperature flexible forming device is particularly suitable for forming the thin-walled complex aluminum-lithium alloy structural part. By utilizing the characteristics of plastification and reinforcement of the aluminum-lithium alloy at ultralow temperature, an ultralow-temperature flexible forming method is adopted to conduct flexible formation of an aluminum-lithium alloy plate, and then the problems that when indoor-temperature formation is conducted on the complex thin-walled aluminum-lithium alloy structural part, a complex-shaped component is difficult to form, fracture toughness is poor, defects such as microcracks are prone to generation during indoor-temperature forming, the forming resilience is large, and the shape and size precision of the component is difficult to guarantee are solved.
Description
technical field [0001] The present invention relates to the technical field of special forming and manufacturing technology for aluminum-lithium alloy complex thin-walled structural parts, and specifically refers to an ultra-low temperature flexible forming device for aluminum-lithium alloy complex structural parts. The structural part means that the shape of the structural part is a space surface structure, and the device is especially suitable for forming thin-walled complex structural parts of aluminum-lithium alloy. Background technique [0002] With the further development of science and technology and the continuous progress of society, lightweight structure plays an increasingly important role in improving resource utilization, reducing energy consumption and improving the performance of parts, and has become one of the development trends of today's manufacturing industry. , and there are mainly two ways to achieve lightweight structure: material and structure: the ma...
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IPC IPC(8): B21D37/10B21D37/16B21D22/20B21D22/26
Inventor 宁旭东许爱军赖小明苏焕焕王书超高战蛟王少华
Owner BEIJING SATELLITE MFG FACTORY
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