Title: Rapid non-contact energy transfer for additive manufacturing driven high intensity electromagnetic fields

Abstract

A method and apparatus for additive manufacturing that includes a nozzle and/or barrel for extruding a plastic material and a supply of polymeric working material provided to the nozzle, wherein the polymeric working material is magnetically susceptible and/or electrically conductive. A magneto-dynamic heater is provided for producing a time varying, high flux, frequency sweeping, alternating magnetic field in the vicinity of the nozzle to penetrate into and couple the working material to heat the material through at least one of an induced transient magnetic domain and an induced, annular current.

Inventors:

Duty, Chad E.; Kunc, Vlastimil; Love, Lonnie J.; Peter, William H.; Rios, Orlando

Issue Date:

2018-11-13

Research Org.:

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1494124

Patent Number(s):

10124531

Application Number:

14/143,971

Assignee:

UT-BATTELLE, LLC (Oak Ridge, TN)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29B - PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

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B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29B - PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED

B29B13/022 - {Melting the material to be shaped}
B29B13/08 - by using wave energy or particle radiation

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS

B29C2035/0811 - {using induction}
B29C2948/92571 - Position, e.g. linear or angular
B29C2948/92857 - Extrusion unit
B29C48/02 - Small extruding apparatus, e.g. handheld, toy or laboratory extruders
B29C48/05 - Filamentary, e.g. strands
B29C48/266 - {Means for allowing relative movements between the apparatus parts, e.g. for twisting the extruded article or for moving the die along a surface to be coated}
B29C48/865 - {Heating}
B29C64/106 - using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
B29C64/118 - using filamentary material being melted, e.g. fused deposition modelling [FDM]
B29C64/209 - Heads
B29C64/25 - Housings, e.g. machine housings

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS

B29K2055/02 - ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers

B - PERFORMING OPERATIONS B33 - ADDITIVE MANUFACTURING TECHNOLOGY B33Y - ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING

B33Y10/00 - Processes of additive manufacturing
B33Y30/00 - Apparatus for additive manufacturing

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DOE Contract Number:  

ACO5-000R22725

Resource Type:

Patent

Resource Relation:

Patent File Date: 2013 Dec 30

Country of Publication:

United States

Language:

English

Subject:

42 ENGINEERING