METHOD FOR SYNTHESISING ARTICLES IN LAYERS Russian patent published in 2022 - IPC B29C64/153 B22F3/105 B33Y10/00 

FIELD: additive technology.

SUBSTANCE: invention relates to methods for synthesising articles in layers. The method includes a set of discrete kinetic, controlled automatically on the basis of a computer three-dimensional model of the article, depositions in layers onto a workpiece made of a material previously divided into discrete parts, each of said parts being conductive, and/or including a ferromagnetic material with a temperature below the Curie point, and/or a material in a plasma state. The method also has physical and chemical parameters characteristic of each deposition, wherein each deposition is made by accelerating and heating the discrete parts of the material in a vacuum or an air environment, or in a protective gas environment with one pulse electromagnetic DC accelerator made according to the rail, or axial, or coil, or combined type of circuit, wherein the above circuits are united by a common acceleration channel. In the process of each deposition, the following is herein performed: the accelerator corresponding to the current deposition is selected; the accelerator is installed, setting the deposition-specific direction of deposition and distance from the output of the acceleration channel to the surface of the workpiece at the intended deposition site; the temperature of the workpiece at the intended deposition site is determined, and the time of supplying a current pulse to the accelerator is set; a discrete part of the material is supplied to the accelerator at an initial velocity specific for this deposition. One unidirectional current pulse with pulse parameters specific for this deposition is supplied to the accelerator, or, if a combined-type accelerator is used, the material is deposited in a solid, and/or liquid, and/or gaseous, and/or plasma state, and/or various transitional states between the above states. For the workpiece in the deposition zone in a solid state and/or a transitional state between solid and liquid, the workpiece shape is changed by attaching a material thereto and ensuring plastic deformation of the material and the layers of the workpiece adjacent to the deposition zone; particles of the material are interconnected and connected with the workpiece in the deposition zone sufficiently strongly, and the set workpiece characteristics in the layers adjacent to the deposition zone are provided with the values and directions of action of the following factors, characteristic of each layer deposition: a pressure correlated with the velocity of the material during deposition, a temperature of the material and the workpiece in the deposition zone, chemical processes correlated or not correlated with the pressure and temperature factors contributing to the adhesion between the particles of the material and the workpiece, time intervals between layer depositions. At least part of the depositions is therein made with a material retaining a solid state and/or a transition state between solid and liquid during deposition, by means whereof a monolithic base frame of the article is created, ensuring that the geometry of the external and internal surfaces of the article is maintained and/or reinforcing the workpiece to change the shape thereof controllably and ensure the strength for the course of the entire process of synthesis.

EFFECT: development of a method for synthesising articles in layers without using a laser.

6 cl, 4 dwg