Method for reducing hot stack influences of metal SLM three-dimensional printing

A technology of 3D printing and thermal deposition, which is applied in the field of 3D printing, can solve the problems affecting the quality of processing, the edge of the processing area cannot be fully melted, etc., and achieve the effects of ensuring stability, reducing the thermal accumulation effect, and prolonging the heat dissipation time

Inactive Publication Date: 2016-05-04
合肥中加激光技术有限公司
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If the laser power is reduced, the edge of the processing area will

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  • Method for reducing hot stack influences of metal SLM three-dimensional printing
  • Method for reducing hot stack influences of metal SLM three-dimensional printing

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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0020] A method for metal SLM three-dimensional printing to reduce the influence of thermal accumulation, the specific steps are as follows:

[0021] (1) Divide the three-dimensional data model into slices with a certain thickness, and then subdivide each slice into scan lines at certain intervals to complete the data processing before processing;

[0022] (2) Numbering the scanning lines, the numbering is carried out at intervals, and the order of numbering is the...

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Abstract

A method for reducing hot stack influences of metal SLM three-dimensional printing specifically includes the following steps of firstly, dividing a three-dimensional data model into sheets with certain thicknesses, fine dividing each sheet into scanning lines at certain intervals, and completing before-processing data treatment; secondly, numbering the scanning lines at intervals in the sequence of a scanning route; thirdly, focusing a laser beam to fuse metal powder in a processing area spot by spot according to the scanning route under the control of a printing host to form metal sheet layers; fourthly, completing scanning of each metal sheet layer according to the scanning route to gradually form a three-dimensional metal object and finally complete three-dimensional printing. Printing time of a plurality of scanning lines exists between each scanning line and the previous scanning line in the printing process, cooling time is greatly prolonged, the hot stack effect is avoided or reduced, and processing quality stability in the whole scanning area is ensured; the printing process is still continuously conducted, and the overall printing time can not be prolonged.

Description

technical field [0001] The invention relates to the technical field of three-dimensional printing, in particular to a method for reducing the influence of thermal accumulation in metal SLM three-dimensional printing. Background technique [0002] Selective laser melting (SLM) is an important branch in the field of 3D printing, mainly used for 3D printing processing of metal materials. The basic workflow is as follows: first cut the 3D data model into slices with a certain thickness, and then subdivide each slice into scan lines at a certain interval to complete the data processing before processing; then, under software control, focus the laser beam The metal powder in the processing area is melted point by point according to the scanning path to form metal sheet layers; each layer of scanning is completed successively, and a three-dimensional metal object is gradually formed, and finally three-dimensional printing is completed. [0003] For the solid part in the three-dime...

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Application Information

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IPC IPC(8): B22F3/105B33Y50/02
CPCB22F10/00B22F10/28B22F10/366Y02P10/25
Inventor 袁自钧陈向东刘福峡吴本科
Owner 合肥中加激光技术有限公司
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