Manufactured metal objects with hollow channels and method for fabrication thereof

    公开(公告)号:US11313041B2

    公开(公告)日:2022-04-26

    申请号:US16459880

    申请日:2019-07-02

    摘要: A method of forming a hollow structure in an additively manufactured object involves creating a pattern on a surface of a base material of the object with a sacrificial metal filler having a melting point of 350° C. or less, the pattern defining a shape of the hollow structure on the base material. A metal layering material is cold sprayed over the sacrificial metal filler and at least a portion of the base material. The sacrificial metal filler is removed from the pattern by melting the sacrificial metal filler without melting or deforming the base material or the metal layering material to leave the hollow structure in the object formed from the pattern. Non-standard cold spray conditions are used with the metal layering material to prevent damage and or displacement of the filler while still forming a coating of the metal layering material on the filler and base material.

    Powder feeder method and system
    4.
    发明授权
    Powder feeder method and system 有权
    送粉方式和系统

    公开(公告)号:US09505566B2

    公开(公告)日:2016-11-29

    申请号:US14242940

    申请日:2014-04-02

    摘要: A powder fluidizing system, comprising a pressure vessel, a powder container removably mounted within the pressure vessel, and comprising a bottom sieve; a vibrator generating vibrations and transmitting the vibrations to the powder container above the sieve; and a guide directly secured under said powder container to the bottom sieve; wherein a bulk powder fed within the powder container is vibrated within the powder container and flows through the sieve to the guide, and a powder fluidizing method, comprising feeding a bulk powder within a powder reservoir maintained under pressure; vibrating the powder reservoir; and passing the powder through a sieve positioned at the bottom of the powder reservoir.

    摘要翻译: 一种粉末流化系统,包括压力容器,可移除地安装在压力容器内的粉末容器,并且包括底部筛子; 振动器产生振动并将振动传递到筛子上方的粉末容器; 以及直接固定在所述粉末容器下方的底部筛子的导向件; 其中在所述粉末容器内供给的散装粉末在所述粉末容器内振动并流过所述筛子至所述引导件;以及粉末流化方法,包括在保持在压力下的粉末储存器内进料散装粉末; 振动粉罐; 并将粉末通过位于粉末储存器底部的筛子。