Notice of RetractionNumerical analysis and experimental research of deformation of gear shaft in laser cladding on teeth surfaces

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

The research object of the paper is a rotor in the lubricant pump for steam turbine. It was found in actual using that the gear shaft was frequently abandoned due to the wearing of teeth surfaces Laser cladding is a effective technique for repairing this kind of wearing high-accuracy components due to its potty heat-affected zone and metallurgical combination between cladding coats and base material. But deformation of shaft is avoidless under the impulsion of large laser power in laser cladding. The aim of this paper is analyzing the connection between deformation of shaft and crafts of laser cladding by the means of numerical calculation and experiment. Numerical calculation model of stress field in the process of laser cladding on teeth surfaces of gear shaft is established. Radial deformation of shaft is calculated with finite element analysis software-ANSYS. Calculation results show that radial deformation could not be avoided if the teeth be sequential cladded. And the deformation would be aggravated with the increasing times of scanning. This deformation would exceed the accepted value if no controlling measure is adopted. Calculation results also show that the radial deformation of shaft would be compensated in a certain extent when applying symmetrical cladding craft. Radial deformation values of gear shaft are measured after two kinds of cladding crafts in experiment. Experiment results show that the radial displacement value of shaft in process of symmetrical cladding is less than one-third of the valu- in sequential cladding. Experiment results are consonant with calculation results. It is shown that symmetrical cladding craft is effective for controlling deformation of gear shaft in laser cladding on teeth surfaces. And this craft could be applied to the repairing work of other parts that similar to gear shaft.