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公开(公告)号：WO2019025801A1
公开(公告)日：2019-02-07
申请号：PCT/GB2018/052205
申请日：2018-08-01
Applicant: THE UNIVERSITY OF LIVERPOOL
Inventor： BLACK, Kate , CHALKER, Paul R , SUTCLIFFE, Christopher J.
Abstract: A method of 3D printing comprises: providing a layer of a powder bed; jetting a functional binder onto selected parts of said layer, wherein said binder infiltrates into pores in the powder bed and locally fuses particles of the powder bed in situ ; sequentially repeating said steps of applying a layer of powder on top and selectively jetting functional binder, multiple times, to provide a powder bed bonded at selected locations by printed functional binder; and taking the resultant bound 3D structure out of the powder bed.
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公开(公告)号：WO2021219995A1
公开(公告)日：2021-11-04
申请号：PCT/GB2021/051023
申请日：2021-04-28
Applicant: THE UNIVERSITY OF LIVERPOOL
Inventor： BLACK, Kate , CHALKER, Paul R , SUTCLIFFE, Christopher J
IPC: B33Y10/00 , B33Y30/00 , B22F10/00 , B22F10/14 , B22F10/16 , B22F10/50 , B22F12/00 , B29C64/165 , B33Y80/00 , G01B7/16 , H05K3/12 , B28B1/00 , C04B35/00
Abstract: A method of 3D printing in which a 3D product is built up layer by layer by jetting from print heads, comprises: forming part of a 3D product by a functional binder jetting process; jetting one or more material in a 2D pattern to form a structure on said part; completing the formation of the 3D product by continuing the functional binder jetting process, so that said structure becomes embedded in said product. Said functional binder jetting may comprise the steps of: providing a layer of a powder bed; jetting a functional binder onto selected parts of said layer, wherein said functional binder infiltrates into pores in the powder bed and locally fuses particles of the powder bed in situ; sequentially repeating said steps of applying a layer of powder on top and selectively jetting functional binder, multiple times, to provide a powder bed bonded at selected locations by printed functional binder. The invention allows the embedding of functional structures such as strain gauges, sensors, actuators, security features, electronic features or smart functionality.
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公开(公告)号：WO2021219996A1
公开(公告)日：2021-11-04
申请号：PCT/GB2021/051024
申请日：2021-04-28
Applicant: THE UNIVERSITY OF LIVERPOOL
Inventor： BLACK, Kate , CHALKER, Paul R , SUTCLIFFE, Christopher J
Abstract: A method of 3D printing a metal or alloy product comprises: providing a layer of a powder bed which comprises a compound of a first metal, and optionally also said first metal in elemental form and/or optionally other elemental metal(s) which are suitable for alloying with said first metal; jetting a functional binder onto selected parts of said layer, wherein said functional binder infiltrates into pores in the powder bed, reacts with said compound of a first metal to form said first metal in elemental form, and locally fuses elemental metal particles of the powder bed in situ, sequentially repeating said steps of applying a layer of powder on top and selectively jetting functional binder, multiple times, to provide a powder bed bonded at selected locations by printed functional binder and; taking the resultant bound 3D structure out of the powder bed. The method may use a reactive component in the powder bed and a reactive component in the binder. Products which may be made include titanium products, titanium alloy products, aluminium products and aluminium alloy products, amongst others.
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