公开(公告)号：US20210323053A1

公开(公告)日：2021-10-21

申请号：US17232343

申请日：2021-04-16

Applicant: Desktop Metal, Inc.

Inventor： Mark Gardner Gibson ,  Julian Bell ,  Emanuel Michael Sachs ,  Nicholas Bandiera

IPC: B22D23/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02

Abstract: A nozzle assembly for metal additive manufacturing using magnetohydrodynamic jetting. A nozzle defines a reservoir and a discharge region having a discharge orifice. A thick film heating system disposed on an exterior of the nozzle and including a first contact pad and a second contact pad connected by a heating pathway heats build material in the nozzle to a liquid state. A first electrode and a second electrode together configured to deliver an electrical current through the liquid build material in the discharge region while a magnet system delivers a magnetic field perpendicular the electrical current, thereby jetting liquid metal to form successive build layers.