Effect of Welding Sequence on Deposition Geometry Control in GMAW Remanufacturing

Abstract:

GMAW welding remanufacturing is the process to form part layer by layer, that it is typical nonlinear transient heat conduction. During remanufacturing, parts undergo heating time after time that the thermal cycle fluctuates acutely and the distribution of temperature gradient is complex. And welding sequence is of significant for remanufacturing accuracy control. This paper has studied the effect of three typical welding sequences (sequential welding, spacing welding and end to end welding) on the deposition geometry control in GMAW remanufacturing, combining numerical with real-time identification. The comparison shows that the simulation results are in accordance with the actual data, which verified the valid of finite element model. From the analysis, it is found that the deformation of end to end welding is the least, and then is the sequential welding and the spacing welding is the largest.

• Periodical: Advanced Materials Research (Volumes 139-141)
• Pages: 1937-1940
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.139-141.1937
• Online since: October 2010
• Authors: Sheng Zhu, Yuan Yuan Liang, Qi Wei Wang
• Keywords: Geometry Control, Remanufacturing, Welding Sequence

References

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[10] [20] [30] [40] -12. 02 -12. 00 -11. 98 -11. 96 -11. 94 -11. 92 -11. 90.

[10] [20] [30] 40 Z Axis Y Axis X Axis.

[10] [20] [30] [40] -12. 00 -11. 95 -11. 90 -11. 85 -11. 80.

[10] [20] [30] [40] Z Axis Y Axis X Axis End to end welding.

[10] [20] [30] [40] -12. 00 -11. 98 -11. 96 -11. 94 -11. 92 -11. 90 -11. 88 -11. 86.

[10] [20] [30] [40] Z Axis Y Axis X Axis Fig. 5 Numerical simulation of lower surface (mm) Sequential welding Spacing welding.