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论文类型：期刊论文

发表时间：2020-06-15

发表刊物：SURFACE & COATINGS TECHNOLOGY

收录刊物：SCIE

卷号：391

ISSN号：0257-8972

关键字：Laser cladding; Coaxial powder feeding; Inclined substrate; Layer geometric characteristics; Theoretical model

摘要：Laser cladding technology has been increasingly used in processes of mechanical part and component repairing and remanufacturing. However, current research on the morphology of laser cladding is carried out on the premise of substrate level, it cannot be directly applied to the inclined substrate for laser cladding. This paper studied the influence law of tilt angle on the morphology of laser cladding through geometric parameters and profile of the laser cladding. Results show that substrate tilt angle mainly affects five geometric parameters such as the width and height of the layer cladding, peak shift, elevation side width and reduction side width. And a theoretical model for these geometrical parameters has been established for prediction in this paper. Meanwhile experimental profiles of laser cladding results verified the consistency between the laboratory data and model predictions, which is developed for tilted substrates. It will greatly expand the application range of laser cladding technology on complex parts such as gears.