US 2017/0304896 A1Published application

Method and system for manufacturing of three dimensional objects

AssigneeJoint Stock Company “Nvo Chervona Hvilya”

InventorsDmytro KOVALCHUK, Ihor MELNYK, Vitalii MELNYK, Borys TUGAI

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Abstract

Method and system for manufacturing of three dimensional objects comprising of base substrate (18) placed on the supporting plate (30), electron beam gun (2), feed means (17) for feeding of feedstock material to melting zone, positioning system (31, 36) for positioning of said supporting plate (30) with base substrate (18), vacuum tight operating chamber (29), wherein an energy source for generating of molten pool on the substrate and for melting of feedstock material in said system is gas-discharge electron beam gun (2) with cold circular cathode (8) placed between two circular anodic electrodes placed coaxially to said cathode (8) which generates electron beam (9) in the shape of hollow inverted cone, and feedstock guide (17) is placed along the axis of said of said electron beam gun (2), and said gas-discharge electron beam gun (2) and said feedstock guide (17) are combined in one functional assembly.

Claims33

Dependent claims

A method of manufacturing of three dimensional objects comprising the steps of:

forming of molten pool on the substrate under influence of an electron beam,
feeding of feedstock material to melting zone where said molten pool is forming,
melting of said feedstock material by said electron beam and deposition of received additional molten material into said molten pool on the substrate,
moving of said melting zone relative to the substrate along trajectory specified by operator or program,
forming of solid deposited layer along said trajectory due to solidification of molten feedstock material together with molten pool as soon as melting zone has left zone of directing of said electron beam,
repeating of said moving of said melting zone relative to the said substrate along trajectory specified by operator or program necessary number of times up to complete forming of specified three dimensional object,
wherein an electron beam in the shape of hollow inverted cone with the apex located near the melting zone is used for forming of molten pool on the substrate and for melting of feedstock material, and feedstock material is fed to melting zone through feedstock guide directed along the axis of said hollow conical electron beam.

4 more elements

A system for manufacturing of three dimensional objects comprising of:

base substrate for forming of three dimensional objects placed on the supporting plate, electron beam gun with power supply, which is an energy source for forming of molten pool on the said substrate,
feed means for feeding of feedstock material dedicated for layered manufacturing of three dimensional objects to melting zone,
positioning system for accurate positioning of said supporting plate with base substrate for forming of three dimensional objects,
vacuum tight operating chamber for enclosing of said base substrate on supporting plate, said electron beam gun, said feed means and said positioning system of positioning of said supporting plate with base substrate,
vacuum system,
control system for control of all equipment, mechanisms and instruments included to said manufacturing system, for monitoring of operating conditions of all systems included to said manufacturing system and for control by technological process of manufacturing of three dimensional objects,
wherein an energy source for generating of molten pool on the substrate and for melting of feedstock material in said system is gas-discharge electron beam gun with cold circular cathode placed between two circular anodic electrodes placed coaxially to said cathode which generates electron beam in the shape of hollow inverted cone, and feedstock guide for feeding of feedstock material to melting zone is placed along the axis of said electron beam gun, and
said gas-discharge electron beam gun and said feedstock guide are combined in one functional assembly.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/520,184Filed 31 Mar 2015
Priority: UA A2014 1153223 Oct 2014
Published: 26 Oct 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

B23K 15/0086
Welding: welding for purposes other than joining, e.g. build-up welding
B22F 10/22
Direct sintering or melting: direct deposition of molten metal
B22F 10/25
Direct sintering or melting: direct deposition of metal particles, e.g. direct metal deposition [DMD] or laser engineered net shaping [LENS]
B22F 12/53
Means for feeding of material, e.g. heads: nozzles