砂型<strong>3DP</strong>打印参数对<strong>ZL205A</strong>合金铸造性能的影响

doi:10.11900/0412.1961.2021.00293

金属学报

2022, Vol. 58

Issue (7): 921-931 DOI: 10.11900/0412.1961.2021.00293

研究论文

本期目录 | 过刊浏览

砂型3DP打印参数对ZL205A合金铸造性能的影响

王春辉¹, 杨光昱¹(

), 阿热达克·阿力玛斯¹, 李晓刚², 介万奇¹

^1.西北工业大学凝固技术国家重点实验室西安 710072
^2.西北工业集团有限公司西安 710043

Effect of Printing Parameters of 3DP Sand Mold on the Casting Performance of ZL205A Alloy

WANG Chunhui¹, YANG Guangyu¹(

), ALIMASI Aredake¹, LI Xiaogang², JIE Wanqi¹

^1.State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China
^2.Northwest Industries Group Co. Ltd., Xi'an 710043, China

引用本文:

王春辉, 杨光昱, 阿热达克·阿力玛斯, 李晓刚, 介万奇. 砂型3DP打印参数对ZL205A合金铸造性能的影响[J]. 金属学报, 2022, 58(7): 921-931.
Chunhui WANG, Guangyu YANG, Aredake ALIMASI, Xiaogang LI, Wanqi JIE. Effect of Printing Parameters of 3DP Sand Mold on the Casting Performance of ZL205A Alloy[J]. Acta Metall Sin, 2022, 58(7): 921-931.

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摘要:

采用约束杆法和单螺旋流动性法研究分析了不同砂型3DP打印参数(呋喃树脂含量1.5% ~3.0% (质量分数,下同)、打印层厚0.28~0.32 mm)条件下ZL205A合金的铸造热裂倾向性和流动性。结果表明,ZL205A合金的铸造热裂倾向性随树脂含量的增加先增加后减小,随打印层厚的增加而减小,ZL205A合金的铸造热裂倾向性与3DP砂型强度显著相关。ZL205A合金的铸造流动性随着树脂含量的增加而减小,随打印层厚的增加而减小。通过理论回归和归一化方法,建立了砂型3DP打印参数与ZL205A合金铸造性能间的回归方程,确定了适合于ZL205A合金砂型铸造的较优砂型3DP打印参数：呋喃树脂含量1.5%,打印层厚0.28 mm。

关键词 ： 3DP打印技术, 砂型铸造, ZL205A铝合金, 热裂倾向性, 流动性

Abstract：

Sand inkjet three-dimensional printing (3DP) technology is ideal for rapidly producing sand mold and sand core for complex thin-walled castings without using traditional casting flasks and patterns, as it offers high printing speed, high dimensional accuracy, good collapsibility, high productivity, and low cost. The constrained rod casting and single spiral fluidity methods were used to investigate the hot tearing susceptibility (HTS) and fluidity of ZL205A casting alloy under various printing parameters of a 3DP sand mold (furan resin content 1.5%-3.0% (mass fraction), printing layer 0.28-0.32 mm). The HTS of the ZL205A alloy first increased and then decreased with increasing resin content, whereas steadily decreased as the printing layer thickness increased. The HTS of the ZL205A alloy was mainly related to the strength of the 3DP sand mold. The fluidity of the ZL205A alloy decreased with increasing resin content and printing layer thickness. Finally, using the theoretical regression and normalization method, the regression equations between the 3DP sand mold's printing parameters and ZL205A alloy's castability were established. The optimized 3DP-printing parameters suitable for ZL205A alloy using 3DP sand mold casting were determined. The resin content was 1.5%, and the printing layer thickness was 0.28 mm.

Key words： 3DP (three-dimensional printing) technology sand mold casting ZL205A aluminum alloy hot tearing susceptibility fluidity

收稿日期: 2021-07-16

ZTFLH:

TG245

基金资助:国家重点研发计划项目(2018YFB1106800);宁夏“十三五”重大科技项目(2018BCE01001)

作者简介: 王春辉,男,1995年生,博士生

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图1 热裂倾向性测试和单螺旋流动性测试3DP砂型及其示意图

图2 3DP砂型铸型强度试样示意图

图3 不同树脂含量和打印层厚下3DP砂型制备的ZL205A合金热裂试棒宏观形貌

图4 试样长度和热裂位置的热裂影响因子示意图

图5 ZL205A合金热裂倾向性随打印参数的变化曲线

图6 3DP砂型铸型强度随打印参数的变化曲线

图7 打印层厚0.28 mm条件下ZL205A合金在不同树脂含量3DP砂型中的冷却速率变化曲线

图8 不同树脂含量和打印层厚下3DP砂型制备的ZL205A合金流动性试样宏观形貌

图9 ZL205A合金流动性试样长度随打印参数的变化曲线

图10 打印层厚0.28 mm条件下3DP砂型发气量随树脂含量的变化曲线

表1 方程组(2)中的常数p1~p8和q1~q10参数值

表2 不同3DP砂型打印参数下的ZL205A合金铸造性能实验值与拟合值

表3 ZL205A合金铸造性能的拟合结果误差与相关性分析

图11 不同3DP砂型打印参数下ZL205A合金的铸造性能指数

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