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Abrasive wear resistance of robotized GMA surfaced cermetal deposits

Klimpel A., Lisiecki A., Klimpel A. S., Rzeźnikiewicz A.

Archives of Materials Science and Engineering

2007

Vol. 28, nr 9

565-572

Purpose: of this paper: Study of abrasive wear resistance of robotized GMA surfaced cermetal deposits. The one-, two-and three layers stringer bead and weave bead deposits were surfaced by a metal-cored wire. Design/methodology/approach: The study were based on the analysis of deposits dilution, structure, measurements of hardness and microhardness, determination of WC carbide morphology and abrasive wear resistance type metal-ceramic according to ASTM G65. Findings: It was found that robotized GMA surfacing process with EnDOtec DO*11 wire of diameter 1,6 [mm], with oscillation of the welding torch, can be applied for producing high quality of deposits in a wide range of surfacing parameters especially heat input. The abrasive wear resistance of stringer bead deposits is significantly higher compared with weave bead deposits. The weave bead deposits are free of transverse cracks, contrary to stringer beads. This phenomenon can be explained by different thermal stresses in the deposits. Research limitations/implications: It was found that further investigations and detailed studies are required to identify the mechanism of deposit shaping, especially the control of dilution, shape of fusion zone and penetration depth, depending on parameters of surfacing and the trajectory and parameters of oscillation of the surfacing GMA torch. Practical implications: The technology can be applied for wear plates manufacturing . Originality/value: Improve of the wear resistance of wear plates.

Robotized GMA surfacing of cermetal deposits

Klimpel A., Lisiecki A., Klimpel A. S., Rzeźnikiewicz A.

Journal of Achievements in Materials and Manufacturing Engineering

2006

Vol. 18, nr 1-2

395--398

Purpose: Purpose of this paper: Study of robotized GMA metal-cored wire surfacing of one-, two- and three layers stringer bead and weave bead deposits has been carried out. Design/methodology/approach: The dilution of deposits, structure, hardness, WC carbide morphology and abrasive wear resistance type metal-ceramic as per ASTM G65, was determined. Findings: It was shown that the abrasive wear resistance of stringer bead deposits is higher than weave bead deposits. Study of robotized GMA surfacing process with EnDOtec DO*11 wire of diameter 1.6 [mm], applying weaving (oscillation) technique of surfacing, showed that it is possible to produce high quality of deposits in a wide range of surfacing parameters (heat input). Contrary to stringer bead deposits, weave bead deposits are transverse cracks free which can be caused by thermal stresses in the deposits. Research limitations/implications: The mechanism of deposit formation (shaping), especially the control of dilution, shape of fusion zone and penetration depth, depending on parameters of surfacing and the trajectory and parameters of oscillation of the surfacing torch demands further investigations and detailed studies. Practical implications: The technology can be applied for wear plates manufacturing. Originality/value: Improve of the wear resistance of wear plates.