阅读说明：本技术 一种工业级大尺寸pc-abs合金材料fdm成型方法 (Industrial large-size PC-ABS alloy material FDM forming method ) 是由 邱金勇 王誉 于 2020-06-16 设计创作，主要内容包括：本发明公开了一种工业级大尺寸PC-ABS合金材料FDM成型方法,包括以下步骤：(1)将PC-ABS合金材料放置于烘干温度为90～120℃的普通鼓风干燥箱进行3～6小时烘干；(2)将成型室和打印平台进行加热；(3)将烘干后的PC-ABS合金材料放入材料箱进一步进行干燥,干燥温度为100～120℃；(4)将打印平台进行微孔处理和涂抹高温黏胶；(5)根据底面的二维图形打印第一层图形,沿图形周轮廓垂直方向打印裙边,所述沿图形周轮廓垂直方向打印的裙边与图形周轮廓重叠,重叠率为5～50％,裙边的宽度为15～30mm；(6)控制喷嘴温度,按照正交铺层方式进行打印成型,最终得到PC-ABS合金样件。本发明通过对烘干温度、微孔处理、打印方式以及喷嘴温度的控制,制得高致密度高强度的PC-ABS样件。(The invention discloses an industrial large-size PC-ABS alloy material FDM forming method, which comprises the following steps of: (1) placing the PC-ABS alloy material in a common air-blast drying oven with the drying temperature of 90-120 ℃ for drying for 3-6 hours; (2) heating the forming chamber and the printing platform; (3) placing the dried PC-ABS alloy material into a material box for further drying, wherein the drying temperature is 100-120 ℃; (4) carrying out micropore treatment and smearing high-temperature viscose on the printing platform; (5) printing a first layer of graph according to the two-dimensional graph of the bottom surface, and printing a skirt edge along the vertical direction of the peripheral outline of the graph, wherein the skirt edge printed along the vertical direction of the peripheral outline of the graph is overlapped with the peripheral outline of the graph, the overlapping rate is 5-50%, and the width of the skirt edge is 15-30 mm; (6) and controlling the temperature of the nozzle, and printing and forming according to an orthogonal layering mode to finally obtain the PC-ABS alloy sample. The invention prepares the PC-ABS sample with high density and high strength by controlling the drying temperature, the micropore processing, the printing mode and the nozzle temperature.)

1. An FDM forming method for an industrial large-size PC-ABS alloy material is characterized by comprising the following steps:

(1) placing the PC-ABS alloy material in a common air-blast drying oven with the drying temperature of 90-120 ℃ for drying for 3-6 hours;

(2) heating a forming chamber and a printing platform of an FDM printing system, wherein the heating temperature of the forming chamber is 100-120 ℃, and the heating temperature of the printing platform is 120-140 ℃;

(3) placing the dried PC-ABS alloy material into a material box of an FDM printing system for further drying, wherein the drying temperature is 100-120 ℃, and the drying mode is continuous drying;

(4) carrying out micropore processing and coating high-temperature viscose on a printing platform of the FDM printing system;

(5) printing a first layer of graph according to the two-dimensional graph of the bottom surface, and printing a skirt edge along the vertical direction of the peripheral outline of the graph, wherein the skirt edge printed along the vertical direction of the peripheral outline of the graph is overlapped with the peripheral outline of the graph, the overlapping rate is 5-50%, and the width of the skirt edge is 15-30 mm;

(6) controlling the temperature of a nozzle of an FDM printing system, and performing printing and forming according to an orthogonal layering mode, wherein the orthogonal layering is an orthogonal layering between layers, and the line laying mode between single lines is a overlapped line laying mode with the overlapping rate of 5-30%, so that a PC-ABS alloy sample piece is finally obtained.

2. The industrial large-size PC-ABS alloy material FDM forming method according to claim 1, wherein the forming method comprises the following steps: the material box is a sealed material box and is communicated with the forming chamber.

3. The industrial large-size PC-ABS alloy material FDM forming method according to claim 1, wherein the forming method comprises the following steps: and the micropore treatment is to paste a PE adhesive tape with micropores on the printing platform, the pore diameter of each micropore is 0.1-1.0 mm, and the high-temperature adhesive is paste-shaped.

4. The industrial large-size PC-ABS alloy material FDM forming method according to claim 1, wherein the forming method comprises the following steps: the FDM printing system is a HAGE 175C printing equipment system.

5. A large-size PC-ABS alloy sample obtained by the forming method of any one of claims 1-4.

Technical Field

The invention relates to the technical field of engineering plastic FDM printing forming, in particular to an industrial large-size PC-ABS alloy material FDM forming method.

Background

The additive manufacturing technology is also called as 3D printing technology, and is mainly based on computer aided design, material processing and forming technology and digital model, and is formed by stacking special printing materials, such as metal materials, ceramic materials, inorganic materials and the like layer by layer in various modes of extrusion, sintering, melting, solidification, spraying and the like through a programming and numerical control system, so as to manufacture a novel solid manufacturing technology.

Polycarbonate (PC) is widely used in the fields of automobile industry, electrical appliance industry and the like as a thermoplastic engineering plastic with excellent performance, but the application range of the PC is limited to a certain extent due to the high price and the notch sensitivity of the PC. The PC/acrylonitrile-butadiene-styrene plastic (ABS) alloy well improves the notch sensitivity of the PC, improves the processing fluidity of the PC, and effectively increases the mechanical property and the application range of the PC. Therefore, in recent years, research on PC/ABS alloys has been favored and the fields of application have become wider.

The FDM is the simplest 3D printing technology of the most popular process, but the FDM3D printing forming technology is not perfect at the industrial level at present, and the problems of poor surface quality, insufficient precision and non-ideal mechanical property exist when a product of a PC-ABS material is printed, particularly, the printing size of the material is limited at present, and parts on a large size are difficult to break through, so that the application of the material in personalized structures such as an industrial complex structure, a bionic structure and the like is greatly limited. Therefore, research on FDM printing and forming of the PC + ABS composite material is beneficial to wide application of the material in 3D printing products in the fields of automobile industry, electronic and electric appliances, tool fixtures and the like for large-size printing and forming of the PC + ABS composite material.

Disclosure of Invention

The technical problem to be solved by the invention is to provide an industrial large-size PC-ABS alloy material FDM forming method,

in order to solve the technical problems, the technical scheme of the invention is as follows:

an FDM forming method for an industrial large-size PC-ABS alloy material comprises the following steps:

(1) placing the PC-ABS alloy material in a common air-blast drying oven with the drying temperature of 90-120 ℃ for drying for 3-6 hours;

(2) heating a forming chamber and a printing platform of an FDM printing system, wherein the heating temperature of the forming chamber is 100-120 ℃, and the heating temperature of the printing platform is 120-140 ℃;

(3) placing the dried PC-ABS alloy material into a material box of an FDM printing system for further drying, wherein the drying temperature is 100-120 ℃, and the drying mode is continuous drying;

(4) carrying out micropore processing and coating high-temperature viscose on a printing platform of the FDM printing system;

(5) printing a first layer of graph according to the two-dimensional graph of the bottom surface, and printing a skirt edge along the vertical direction of the peripheral outline of the graph, wherein the skirt edge printed along the vertical direction of the peripheral outline of the graph is overlapped with the peripheral outline of the graph, the overlapping rate is 5-50%, and the width of the skirt edge is 15-30 mm;

(6) controlling the temperature of a nozzle of an FDM printing system, and performing printing and forming according to an orthogonal layering mode, wherein the orthogonal layering is an orthogonal layering between layers, and the line laying mode between single lines is a overlapped line laying mode with the overlapping rate of 5-30%, so that a PC-ABS alloy sample piece is finally obtained.

Preferably, the material box is a sealed material box and is communicated with the forming chamber.

Preferably, the micropore treatment is to paste a PE adhesive tape with micropores on the printing platform, the pore size of the micropores is 0.1-1.0 mm, and the high-temperature adhesive is a paste-like high-temperature adhesive.

Preferably, the FDM printing system is a HAGE 175C printing apparatus system, and the main printing parameters are: print nozzle diameter: 0.25-1.0 mm; print nozzle temperature: 245-265 ℃; layer thickness: 0.1-0.3 mm; printing speed: 30-60 mm/min.

By adopting the technical scheme, the temperature of the printing platform and the forming chamber is controlled by drying the alloy material, the micropore treatment and the gluing treatment of the printing platform are added, the density of the alloy sample piece is increased, the density and the strength of the alloy sample piece are improved by controlling the temperature of the nozzle and improving the paving layer structure, and the quality of the alloy sample piece is improved.

Detailed Description

The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.