Numerical Simulation and Verification of Laser-Polishing Free Surface of S136D Die Steel
Open Access
Abstract
As a novel polishing technology, polishing by laser beam radiation can be used to improve the sample surface finish without causing material losses. In order to study the effect of laser polishing on the surface morphology of S136D die steel, an L16(44) orthogonal experiment was designed to describe the variation trend of surface roughness with energy density. The two-dimensional transient model of laser polishing was established to simulate the evolution process of material surface morphology during laser polishing by combining numerical simulation with the experiment. The model uses a moving laser heat source to study the effects of capillary pressure and thermocapillary pressure in the laser polishing process. The experimental results show that the minimum roughness can be reduced to 0.764 μm, and the error between the actual molten pool depth and the simulated molten pool depth is 5.3%.Keywords
Funding Information
- Innovation Team Project on University of Guangdong Province (No.2018GKCXTD001)
This publication has 23 references indexed in Scilit:
- Fundamental aspects and recent developments in metal surface polishing with energy beam irradiationInternational Journal of Machine Tools and Manufacture, 2020
- Experiment Study of Rapid Laser Polishing of Freeform Steel Surface by Dual-BeamCoatings, 2019
- Review on mechanism and process of surface polishing using lasersFrontiers of Mechanical Engineering, 2019
- Effect of tempering on laser remelted AISI H13 tool steelSurface and Coatings Technology, 2019
- Surface structuring by laser remelting of metalsJournal of Laser Applications, 2017
- Surface quality, microstructure, mechanical properties and tribological results of the SKD 61 tool steel with prior heat treatment affected by the deposited energy of continuous wave laser micro-polishingJournal of Materials Processing Technology, 2016
- Active reduction of waviness through processing with modulated laser powerJournal of Laser Applications, 2015
- Influence of overlap between the laser beam tracks on surface quality in laser polishing of AISI H13 tool steelJournal of Manufacturing Processes, 2012
- Laser polishing of tool steel with CO2 laser and high-power diode laserInternational Journal of Machine Tools and Manufacture, 2010
- Micromelting and its effects on surface topography and properties in laser polishing of stainless steelJournal of Laser Applications, 2004