A cryogenic and micro-deep-drawing process of an aluminum alloy micro-deep-drawing cup
A technology of micro-deep drawing and aluminum alloy, which is applied in the direction of metal processing equipment, forming tools, manufacturing tools, etc., and can solve the problems of low toughness and restrictions
Active Publication Date: 2018-12-18
CENT SOUTH UNIV
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Problems solved by technology
For aluminum alloy, its density is low and its strength is high, but its toughness is low at room temperature, so its application is limited
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[0016] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.
[0017] The density of aluminum alloy is obviously relatively low. In addition, its high temperature toughness is better, but the room temperature toughness is poor, but the toughness becomes very good at ultra-low temperature. If the aluminum alloy material is cryogenically formed, the strength and toughness of the aluminum alloy component can be greatly improved.
[0018] Based on the above principles, such as figure 1 As shown, the cryogenic micro-drawing preparation process of the aluminum alloy micro-drawing cup of the present invention is as follows:
[0019] Step 1: Aluminum alloy foil 1 is used as raw material, and the thickness of aluminum alloy foil 1 is 5-300 μm.
[0020] The second step: the aluminum alloy foil 1 is formed into a sheet material of a certain size to obtain a workpiece 3, and the size is adjusted according to the cont...
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Abstract
The invention provides a deep cooling micro deep drawing technique for an aluminum alloy micro deep drawing cup. Aluminum alloy foil serves as a raw material and is machined into a piece-shaped material of a certain size, the piece-shaped material is placed in liquid nitrogen for cooling for 10-20 min, and the temperature is uniformly decreased to minus 190 DEGC+-2 DEG C; and then the cooled piece-shaped material is taken out to be subjected to deep cooling micro deep drawing deformation, and the high-performance aluminum alloy micro deep drawing cup is produced, wherein according to the deepcooling micro deep drawing deformation, in the micro deep drawing deformation process, a spray gun is adopted to spray liquid nitrogen gas for cooling and lubricating. According to the main principle,ultra-low-temperature plastic deformation is utilized to enable the strength and toughness of an aluminum alloy to be synchronously improved, and in the meantime, the micro deep drawing deformation technology is utilized to prepare directly-applied high-performance parts. The deep cooling micro deep drawing technology is suitable for preparation of the aluminum alloy micro deep drawing cup. The aluminum alloy micro deep drawing cup has wide prospects in the fields of microelectronics and the like.
Description
technical field [0001] The invention belongs to the technical field of plastic forming of metal materials, in particular to a cryogenic micro-drawing process of an aluminum alloy micro-drawing cup. Background technique [0002] With the rapid development of the field of microelectronics, the field of microforming has received extensive attention from the international community. People are committed to preparing high-performance micro-formed parts through various processes and technologies. In particular, as people's demand for workpiece weight reduction increases, the demand for foil thickness reduction and performance improvement is rapidly increasing. [0003] An important way to reduce the weight of the workpiece is to achieve a reduction in material or a reduction in material density. For aluminum alloy, its density is low and its strength is high, but its toughness is low at room temperature, so its application is limited. Contents of the invention [0004] In ord...
Claims
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IPC IPC(8): B21D33/00B21D37/16
Inventor 喻海良崔晓辉王青山
Owner CENT SOUTH UNIV