Article(id=1195733617642095567, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1195733614798357446, articleNumber=null, orderNo=null, doi=10.19710/J.cnki.1003-8817.20240363, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1763014710101, onlineDateStr=2025-11-13, pubDate=1745078400000, pubDateStr=2025-04-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763014710101, onlineIssueDateStr=2025-11-13, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763014710101, creator=13701087609, updateTime=1763014710101, updator=13701087609, issue=Issue{id=1195733614798357446, tenantId=1146029695717560320, journalId=1189873562199433220, year='2025', volume='', issue='4', pageStart='1', pageEnd='72', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1763014709424, creator=13701087609, updateTime=1763015213929, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1195735730925388785, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1195733614798357446, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1195735730925388786, tenantId=1146029695717560320, journalId=1189873562199433220, issueId=1195733614798357446, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=40, endPage=45, ext={EN=ArticleExt(id=1195733617952474065, articleId=1195733617642095567, tenantId=1146029695717560320, journalId=1189873562199433220, language=EN, title=Intelligent Quality Prediction of Magnesium Alloy Die-Casting Parts Based on Data-Driven Method, columnId=1190284220686766583, journalTitle=Automobile Technology & Material, columnName=Original article, runingTitle=null, highlight=null, articleAbstract=
In order to achieve intelligent predication of magnesium alloy die-casting parts, reduce offline labor inspection cost, and improve intelligent level of magnesium alloy die-casting industry, this paper collects big data on “process parameters-quality parameters” of large thin-walled magnesium alloy castings, and uses random forest model to establish the relationship between process parameters and the types of defects in castings, and analyzes the effect of long-tailed distribution of labels in the industrial data on the predictive performance of machine learning models. Then the “Random Downsampling + SMOTE Over-sampling” algorithm is emptoyed to balance the distribution of the data set. Finally, an accurate prediction model with an accuracy of 89.54%, an area under ROC curve of 0.983 8, and an average true rate of 87.65% are obtained, which achieves a precise detection of a small number of defective samples, and obtains the ranking of the importance of key process parameters for magnesium alloy casting.
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为实现镁合金压铸件质量的智能预测,降低人工下线检测成本,提升镁合金压铸产业智能化水平,通过收集镁合金大型薄壁压铸件“工艺参数-质量参数”大数据,采用随机森林模型建立工艺参数与铸件产生的缺陷种类间的关系,分析了工业数据中的标签长尾分布现象对机器学习模型预测性能的影响,通过“随机降采样+SMOTE过采样”算法对数据集分布进行均衡化,最终获得了准确率为89.54%、受试者工作特征曲线(ROC)下面积为0.983 8、平均真正率为87.65%的准确预测模型,实现了极少数含缺陷样本的精准检出,并获得了镁合金压铸关键工艺参数重要性排序。
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付彭怀(1980—),男,副研究员,博士学位,研究方向为镁/铝合金材料与铸造、增材制造技术。
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汪星辰(1991—),男,助理研究员,博士学位,研究方向为镁/铝合金智能研发与制造。
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| 参数类型 | 参数数量 |
| 模次编号 | 1 |
| 生产时间节点 | 2 |
| 压铸工艺参数 | 71 |
| 质量参数 | 5 |
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| 参数类型 | 参数数量 |
| 模次编号 | 1 |
| 生产时间节点 | 2 |
| 压铸工艺参数 | 71 |
| 质量参数 | 5 |
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| 序号 | 参数名称 | 序号 | 参数名称 |
| 1 | 合型偏移时间 | 13 | 充填时间 |
| 2 | 压射补偿时间 | 14 | 增压时间 |
| 3 | 开模补偿时间 | 15 | 增压延时时间 |
| 4 | 取件机补偿时间 | 16 | 压射持续时间 |
| 5 | 合型时间 | 17 | 熔化定量持续时间 |
| 6 | 开模持续时间 | 18 | 闭环行程2 |
| 7 | 动模温度 | 19 | 动模压力 |
| 8 | 模温机入口管道1温度 | 20 | 最大压力 |
| 9 | 液管1温度 | 21 | 填充压力 |
| 10 | 压铸机油温 | 22 | 铸造压力 |
| 11 | 铝液液位 | 23 | 1号大杠锁模力中值 |
| 12 | 料饼厚度 | | |
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| 序号 | 参数名称 | 序号 | 参数名称 |
| 1 | 合型偏移时间 | 13 | 充填时间 |
| 2 | 压射补偿时间 | 14 | 增压时间 |
| 3 | 开模补偿时间 | 15 | 增压延时时间 |
| 4 | 取件机补偿时间 | 16 | 压射持续时间 |
| 5 | 合型时间 | 17 | 熔化定量持续时间 |
| 6 | 开模持续时间 | 18 | 闭环行程2 |
| 7 | 动模温度 | 19 | 动模压力 |
| 8 | 模温机入口管道1温度 | 20 | 最大压力 |
| 9 | 液管1温度 | 21 | 填充压力 |
| 10 | 压铸机油温 | 22 | 铸造压力 |
| 11 | 铝液液位 | 23 | 1号大杠锁模力中值 |
| 12 | 料饼厚度 | | |
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| 预测0/个 | 预测1/个 | 预测2/个 | 预测3/个 | TPR/% |
| 真实0 | 9 731 | 52 | 5 | 0 | 99.42 |
| 真实1 | 577 | 543 | 3 | 0 | 48.35 |
| 真实2 | 39 | 10 | 23 | 0 | 31.94 |
| 真实3 | 9 | 0 | 0 | 2 | 18.18 |
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| 预测0/个 | 预测1/个 | 预测2/个 | 预测3/个 | TPR/% |
| 真实0 | 9 731 | 52 | 5 | 0 | 99.42 |
| 真实1 | 577 | 543 | 3 | 0 | 48.35 |
| 真实2 | 39 | 10 | 23 | 0 | 31.94 |
| 真实3 | 9 | 0 | 0 | 2 | 18.18 |
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| 质量等级(缺陷种类数) | 样本数/个 |
| 0 | 39 132 |
| 1 | 4 487 |
| 2 | 320 |
| 3 | 34 |
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原始训练集标签值分布情况
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| 质量等级(缺陷种类数) | 样本数/个 |
| 0 | 39 132 |
| 1 | 4 487 |
| 2 | 320 |
| 3 | 34 |
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| 真实 | 预测0个 | 预测1个 | 预测2个 | 预测3个 | TPR/% |
| 真实0 | 8 737 | 995 | 55 | 1 | 89.26 |
| 真实1 | 72 | 1 041 | 10 | 0 | 92.70 |
| 真实2 | 4 | 12 | 56 | 0 | 77.77 |
| 真实3 | 0 | 0 | 1 | 10 | 90.90 |
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| 真实 | 预测0个 | 预测1个 | 预测2个 | 预测3个 | TPR/% |
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| 真实1 | 72 | 1 041 | 10 | 0 | 92.70 |
| 真实2 | 4 | 12 | 56 | 0 | 77.77 |
| 真实3 | 0 | 0 | 1 | 10 | 90.90 |
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