Layer deposition model with pores in the temperature simulation of plasma spray forming
Purpose The purpose of this paper is to outline how pores influence the temperature field of coating accumulation process in PSF (plasma spray forming) by a layer deposition model with pores, as pores are characteristic of the structure of coatings manufactured by PSF.Design/methodology/approach A 1536×2048 micrograph of stainless steel AISI 420 coating, taken at 200x magnification and representing a real area of 550μm×750μm, was first digitally processed to be a binary image.Then, the binary image was transformed to be a mesh of 55×75 quadrilateral elements after a few morphological operations and a resizing operation, in which the pore elements would be deleted later. Subsequently, the mesh was divided into 15 layers in the temperature simulation by the layer deposition model with the commercial software ANSYS.Findings Pores have significant influence on the temperature field distribution in coating accumulation process. The temperature of the points close to the pores decreases faster than that of the points away from the pores. The deposition of every layer imposes a temperature impact on the existing coating, which leads to the temperature increase of the existing coating.Originality/value A layer deposition model with pores was constructed to simulate the temperature evolution of the coating accumulation process.
pores layer deposition model temperature simulation plasma spray forming
Haoping Zeng Kewei Lin Haiqing Du Wenji Xu Jiancheng Fang
Department of Digital Control Engineering, Zhejiang Industry Polytechnic College, China Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dali College of Mechanical Engineering and Automation, Huaqiao University, China
国际会议
北京
英文
412-417
2008-11-06（万方平台首次上网日期，不代表论文的发表时间）