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Mathematical Model of the Influence of Process Parameters on Geometrical Values and Shape in MIG/MAG Multi-Track Cladding

[+] Author Affiliations
Andris Ratkus, Toms Torims

Riga Technical University, Riga, Latvia

Paper No. IMECE2014-37479, pp. V02AT02A007; 10 pages
doi:10.1115/IMECE2014-37479
From:
  • ASME 2014 International Mechanical Engineering Congress and Exposition
  • Volume 2A: Advanced Manufacturing
  • Montreal, Quebec, Canada, November 14–20, 2014
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4643-8
  • Copyright © 2014 by ASME

abstract

The cladding process in the present case contributes to a repair technology, in which a new layer of material is created by using Metal Inert Gas/Metal Active Gas technology on inner cylindrical surfaces, e.g. bucket bores or hydro cylinders. The cladded layer is subsequently subjected to mechanical processing. Although cladding technology itself is well known, its results are hardly ever predicted with regard to inner surface renewal. In this paper, we explore the influence of cladding technological process parameters on geometrical values: the thickness, cross-section areas and shape of the newly cladded layer are established. Current research provided significant information which enabled mathematical models to be developed for inner surface cladding. Polynomial regression was used to create a mathematical model, where coefficients established with the SYSTAT software and their adequacy was checked using the analysis of variance technique. Thus an equation was obtained to help identify the effects of parameters on the final result. The most significant factor identified in cladding geometry is the amount of material that is supplied to the melting pool, followed by the process speed and heat input. The obtained coefficient describing the amount of material is presented, together with equations for calculating minimal thickness, efficient thickness and the multi-track cladding shape.

Copyright © 2014 by ASME

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