电焊机2024，Vol.54Issue(8)：72-78,102,8.DOI:10.7512/j.issn.1001-2303.2024.08.09
薄壁构件GMA增材制造成形特性与尺寸预测
Geometry Character and Prediction of Deposition Layers for Thin-walled Parts in GMA-based Additive Manufacturing
程圣 1刘正勇 1熊俊 2王天石 1陈帅1
作者信息
- 1. 成都市茶店子429信箱,四川 成都 610036
- 2. 西南交通大学 材料先进技术教育部重点实验室,四川 成都 610031
- 折叠
摘要
Abstract
Geometry character of deposition layers for thin-walled parts in GMA-based additive manufacturing is researched using GMA as the heat source and H08Mn2Si wire as the additive material.Layer geometries are measured by an optical mi-croscope.Geometry characters of deposition layers are analyzed,and its forming mechanism is also illustrated.The results show that the layer geometries in the previous four layers are unstable and have a larger fluctuation.With the increase of the number of deposition layers,the layer height decreases and then reaches a stable value.With the increase of the number of deposition layers,the layer width firstly decreases and then gradually increased to a stable value,and the layer width has a minimum value in the second layer.A series of experiments are carried out for collecting the input-output data by applying a central composite rotatable design.Nonlinear relations between deposition current,travel speed,arc voltage and layer geom-etry are developed based on neural network algorithms.Testing data show that the neural network model has a great predic-tion capability,and maximum relative errors between predicted and measured values are no more than 6.98%.According to the model,closed and open path thin-walled parts are fabricated,demonstrating the effectiveness of the model employed in the adaptive slicing process for thin-walled components.关键词
增材制造/GMAW/薄壁构件/尺寸特性Key words
additive manufacturing/GMA/thin-walled parts/geometry character分类
矿业与冶金引用本文复制引用
程圣,刘正勇,熊俊,王天石,陈帅..薄壁构件GMA增材制造成形特性与尺寸预测[J].电焊机,2024,54(8):72-78,102,8.
