Method for stabilizing a powder bed by means of vacuum for additive manufacturing

摘要

The invention relates to a device and a method for stabilizing a powder bed by means of low pressure for an additive manufacturing method, wherein the device comprises: a container open at least on one side, comprising a bottom, at least one side wall and a container opening; a filter in or above the bottom and/or in the at least one side wall, wherein an area occupied by the filter corresponds to the area of the bottom or the area of the side wall and wherein the filter is substantially impermeable to a powder comprising the powder bed; and a connection at the bottom and/or at the side wall of the container or on a side of the filter facing away from the container opening, wherein the connection is suitable for connection to a suction pump, such that a powder bed arranged in the container is pressed against the filter and stabilized by means of a vacuum produced by the suction pump.

主权项

1. A device for stabilizing a powder bed employing low pressure for an additive manufacturing method, comprising:
a container open on at least one side, comprising a bottom, at least one side wall and a container opening; a filter in or above the bottom and/or in the at least one side wall, wherein an area occupied by the filter corresponds to the area of the bottom or the area of the side wall and wherein the filter is substantially impermeable to the powder comprising the powder bed; a connection at the bottom and/or at the side wall of the container or on a side of the filter facing away from the container, wherein the connection is suitable for connection to a suction pump,so that a powder bed disposed in the container is compressed against the filter and stabilized by a low pressure produced by the suction pump; and
a compression device which can be connected to or attached to the container opening, which can be used to exert pressure on the powder bed via a pressurized gas.