Unlock instant, AI-driven research and patent intelligence for your innovation.

3D printing, heat treatment and finishing integrated processing method

A processing method and 3D printing technology, applied in the direction of additive processing, additive manufacturing, process efficiency improvement, etc., can solve the problems of difficult, cumbersome processing, and inability to process, so as to improve the utilization rate of equipment, solve complex structures, improve The effect of surface quality

Active Publication Date: 2018-06-29
DALIAN UNIV
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing 3D printing process, the heat treatment process is carried out in a heat treatment furnace filled with protective gas, and the machining is completed on the corresponding machine tool. It can be seen that the complete metal parts manufacturing process needs to complete three processes on three devices, which is cumbersome. , complex, large investment in equipment
In addition, the difficulty of the machining process depends on the complexity of the part. The more complex the part, the more difficult it is to process, or even impossible to process; although polishing and grinding are an option for machining complex parts, polishing and grinding can only improve the surface quality and cannot Change the deformation and dimensional accuracy caused by thermal stress, etc.; further limit the promotion and application of 3D printing technology in the field of complex parts manufacturing

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 3D printing, heat treatment and finishing integrated processing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment takes powder spraying laser fusion deposition molding and powder coating laser fusion deposition molding as examples, and provides an integrated processing method of 3D printing, heat treatment and finishing, including:

[0039] S1. Process analysis: analyze the processing technology of the part in combination with the 3D model of the part, the technical requirements of the part, and the characteristics of the material of the part, and determine the layering direction, layering thickness, process method and process parameters of the model; this step is the same as the principle of ordinary printing layering. The model is a solid or closed sheet or a mid-surface model with equal wall thickness;

[0040] S2. Model processing: perform necessary processing on the model according to the type of the imported model, mainly including repairing the surface of the non-closed sheet, making the closed surface of the built part for the mid-surface part, and offset thi...

Embodiment 2

[0052] This embodiment takes fuse accumulation molding as an example, and provides an integrated processing method of 3D printing and finishing, including:

[0053] S1. Process analysis: analyze the processing technology of the part in combination with the 3D model of the part, the technical requirements of the part, and the characteristics of the material of the part, and determine the layering direction, layering thickness, process method and process parameters of the model; import the model of the processed part as a solid or closed sheet Or a mid-plane model with constant wall thickness;

[0054] S2. Model processing: perform necessary processing on the model according to the type of the imported model, mainly including repairing the surface of the non-closed sheet, making the closed surface of the built part for the mid-surface part, and offset thickening the part surface, etc.; select Slice the reference plane, establish a coordinate system, and establish a supporting au...

Embodiment 3

[0063] As a supplement to Examples 1 and 2, model processing includes simplifying the model, repairing the model, making auxiliary supports, and increasing the thickness of the model wall. Each slice of the part is parallel to the slice reference plane, which determines the stacking direction of the parts and the processing coordinate system of the parts. Direction, the forming and stacking process adopts bottom-up layer-by-layer accumulation, or top-down layer-by-layer accumulation. Model layering includes fixed thickness layering and automatic layering according to model surface roughness.

[0064] Preferably, the heat treatment process is completed by adjusting the laser process parameters with a 3D printed laser source as a tool. Heat treatment layer thickness depends on part material, part wall thickness and part structure.

[0065] Preferably, the machining process is realized by multi-axis high-speed milling, and each layer of machining is milled in multiple layers acc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

3D printing, heat treatment and finishing integrated processing method, including: process analysis, model processing, layering, 3D printing, heat treatment, mechanical processing and other steps, in which the 3D printing process is carried out step by step with its own layer thickness, when it has been printed and The heat treatment process is inserted when the thickness of the unheated layer exceeds the thickness of the layer to be heat treated, and the mechanical processing process is inserted when the thickness of the heat-treated and machined layer exceeds the thickness of the layer to be machined. Through the alternating process of 3D printing, heat treatment and mechanical processing, the layered accumulation molding, layered heat treatment and layered surface processing of the printed parts are realized, and the precision molding of the processed parts is finally realized. Based on the principle of layering, this application solves the problem of mechanical processing on the surface of 3D printing parts with complex shapes through process integration, and improves the surface quality and dimensional accuracy of 3D parts.

Description

technical field [0001] The invention belongs to the technical field of rapid prototyping, especially rapid prototyping of metal materials, and specifically relates to an integrated processing method of 3D printing, heat treatment and finishing. Background technique [0002] 3D printing technology, also known as rapid prototyping technology, has a history of more than 30 years. In recent years, 3D printing technology has made breakthroughs and been widely used. 3D printing technology divides the parts into multiple sheets along a certain direction, and then divides the three-dimensional parts into two-dimensional sheet units with a certain thickness, so as to realize the simple accumulation and manufacture of complex parts; the industrial production mainly includes powder spraying There are three types of laser fusion deposition molding, powder coating laser fusion deposition molding and fuse deposition molding. 3D printing technology can manufacture metals, ceramics, plasti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/105B22F3/24B33Y10/00B33Y50/00
CPCB22F3/24B33Y10/00B33Y50/00B22F2003/248B22F2003/247B22F10/00B22F10/38B22F10/25B22F10/364B22F10/28B22F10/50B22F10/80Y02P10/25
Inventor 王元刚吴蒙华王珍李晓鹏贾卫平王邦国刘安生
Owner DALIAN UNIV