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公开(公告)号：US12053814B2
公开(公告)日：2024-08-06
申请号：US17045645
申请日：2019-09-10
申请人： SHANDONG UNIVERSITY
发明人： Cunsheng Zhang , Mingfu Liu , Guoqun Zhao , Liang Chen , Xinwu Ma
CPC分类号： B21D28/243 , B21C23/04 , B21C35/023 , B21C25/02 , B21D43/003
摘要： A method for making a profile with a micro-hole, in particular using a continuous composite extrusion process, comprises embedding, in a position in a matrix of the profile to be formed where a micro-hole is to be formed, a continuous wire having a shape and size consistent with that of the micro-hole; sawing a composite profile with the wire obtained by extrusion to a desired length; and removing the wire from the sawed composite profile using a predetermined physical or chemical method without changing the matrix of the composite profile so that the micro-hole of the predetermined size and shape is formed in the predetermined position in the profile. This method is simple, does not require any large, expensive, and sophisticated equipment, can produce continuous micro-holes of different specifications, and can be used in a wide variety of applications.
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公开(公告)号：US11697868B2
公开(公告)日：2023-07-11
申请号：US17844065
申请日：2022-06-20
申请人： SHANDONG UNIVERSITY
发明人： Liang Chen , Jianwei Tang , Zhigang Li , Guoqun Zhao , Cunsheng Zhang
摘要： Disclosed is a processing technology for inhibiting weld coarse grains of magnesium alloy profiles, including the following steps: preparation of a magnesium alloy ingot, homogenization, scalping, extrusion, pre-stretching at room temperature, solution treatment, quenching, stretching correction, artificial aging, etc. The processing technology can effectively control the production of weld coarse grains in extrusion and heat treatment processes of magnesium alloy profiles, and all property indexes of final products are higher than standard requirements.
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