Transactions of Materials and Heat Treatment

Title：Analysis and improvement suggestions on quality defects in hemming process for water cutting door

Authors： Pan Yuan′an Han Di Shao Qi Yu Chao Zhao Ye Song Yan Gao Shuoyao

Unit： Fengwei Machinery Technology Co. Ltd. Jilin Communications Polytechnic FAW Car Co. Ltd.

KeyWords： water cutting door hemming process flanging mechanism salient point gluing process

ClassificationCode：TG386.4

year,vol(issue):pagenumber：2019,44(9):93-99

Abstract：

Based on the analysis of quality defects such as the insufficient hemming strength caused by the hemming looseness of water cutting door and the functional failure of the external water cutting seal, the failure problem of the external water cutting seal could be eliminated by controlling the hemming thickness, but the looseness problem could not be eliminated. However, adding gluing process could eliminate the looseness problem, but the production cost increased at the same time. Finally, the looseness defect problem was solved and the increased gluing cost was saved by adding salient points on flanging inserts of flanging mechanism to increase the sheet metal combination strength between reinforcing plate and outer panel in water cutting area, and the purpose of improving the vehicle quality was achieved. Furthermore, suggestions for the process design of hemming for water cutting door were put forward for the following models, and riveting nails were added to the flanging inserts of the flanging mechanism, which successfully solved the problems of surface strength decline and wear resistance decline caused by welding and improved the uniformity of hemming strength for water cutting and the overall beauty of parts. Thus, the reference methods are provided for solving similar problems in the following models.

Funds：

潘远安（1983-），男，硕士，高级工程师 E-mail：116521719@qq.com 通讯作者：高硕遥（1986-），女，硕士，高级工程师 E-mail：gsychinese@126.com

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