Abstract: A method for additive manufacturing of three-dimensional objects from metallic glasses utilizing a process of melting of successive layers of the starting material by a laser beam or an electron beam. The method includes steps such that every material layer is melted twice, using parameters which yield a crystalline melt trace in the first melting, and the successively melted beam paths contact with one another, while in the second melting, parameters yielding an amorphous melt trace are used, and the successively remelted paths or spots do not come in contact with one another, and/or between the scanning of successive paths or spots, an interval not shorter than 10 ms is maintained, the surface power density in the first remelting being lower than in the second remelting.
Type:
Grant
Filed:
January 13, 2017
Date of Patent:
October 19, 2021
Assignee:
HERAEUS ADDITIVE MANUFACTURING GMBH
Inventors:
Łukasz Żrodowski, Krzyztof Jan Kurzydłowski, Wojciech Świȩszkowski, Bartlomiej Wysocki
Abstract: In 3D printing, due to the geometry to be printed, inhomogeneous material properties of the printing product can occur. This problem is solved by a method of determining printing process parameter values for a 3D printer, including producing at least one meta-model, wherein the at least one meta-model indicates a relationship between at least one printing process parameter and at least one product property of a printing product for object data, wherein the object data indicate a digital representation of an object to be printed. The method also includes determining at least one first printing process parameter value for the at least one printing process parameter in a first printing area and at least one second printing process parameter value for the at least one printing process parameter in a second printing area taking into consideration the at least one meta model and the object data.