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7117349 
Journal Article 
Correcting shape error on external corners caused by the cut-in/cut-out process in abrasive water jet cutting 
Tel, CG; Ding, G; Kirschner, A; ,; Chen, M; Zhang, S; Zeng, J; Chen, B; Xue, J; Ji, L; , 
2019 
Yes 
International Journal of Advanced Manufacturing Technology
ISSN: 0268-3768 
SPRINGER LONDON LTD 
LONDON 
103 
1-4 
849-859 
WOS:000475921300061 
With the development of the five-axis abrasive water jet (AWJ) cutting technology, several defects, such as cutting lag and taper, could be eliminated successfully, and a higher level of cutting accuracy has been realized. However, the shape errors, such as bump error and overcut, caused by the cut-in/cut-out process become the key for further improvement in cutting quality. This paper focuses on shape error elimination on external corners with lead-in/lead-out lines added on. Based on theoretical analysis, it is found that jet lag is the main reason for the bump error and slow nozzle traversing speed is the main reason for overcut. To correct shape error on external area, a bump removal angle, which could be used to eliminate bump error, has been searched out. To avoid overcut, a method to calculate optimal length for lead-in/lead-out lines has been proposed. Because of the effectiveness of this method, it has been applied in industry. The conclusion obtained from this paper could also be applied to each external corner. 
Abrasive water jet (AWJ); Cut-in/cut-out corner area Bump removal angle; Jet lag; Nozzle traversing speed