Material Removal Characteristic of Laser Cladding Cobalt-Based Alloy in the Photochemical Process
Xi Zeng,
Zhuo Li,
Fengfei Xi,
Shiming Ji,
Lei Qiu,
Meng Shi,
Qianqian Zheng,
Wenbin Qiu
Affiliations
Xi Zeng
Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology of Ministry of Education, Zhejiang University of Technology, Hangzhou 310024, China
Zhuo Li
Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology of Ministry of Education, Zhejiang University of Technology, Hangzhou 310024, China
Fengfei Xi
Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology of Ministry of Education, Zhejiang University of Technology, Hangzhou 310024, China
Shiming Ji
Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology of Ministry of Education, Zhejiang University of Technology, Hangzhou 310024, China
Lei Qiu
Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology of Ministry of Education, Zhejiang University of Technology, Hangzhou 310024, China
Meng Shi
Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology of Ministry of Education, Zhejiang University of Technology, Hangzhou 310024, China
Qianqian Zheng
Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology of Ministry of Education, Zhejiang University of Technology, Hangzhou 310024, China
Wenbin Qiu
Key Laboratory of Special Purpose Equipment and Advanced Manufacturing Technology of Ministry of Education, Zhejiang University of Technology, Hangzhou 310024, China
Cobalt-based alloy materials, widely used for laser cladding, are difficult to process. To address this problem, and based on the analysis of the physicochemical properties of cobalt and its compounds, a method for removing cobalt-based alloy materials under photocatalytic conditions was proposed under the effect of ultraviolet photocatalysis and chemical corrosion. In this study, a material removal model under photocatalytic conditions was established, and the reaction principle of cobalt-based alloys under ultraviolet photocatalysis and chemical corrosion conditions was described. We designed a corrosion solution configuration test and established a cobalt-based alloy processing test based on a pneumatic wheel test platform. The processing test proved that the combination of ultraviolet (UV) photocatalysis and Basic Yellow 40 + TiO2 chemical corrosion pretreatment can significantly increase the mechanical material removal rate of cobalt-based alloy materials and effectively reduce surface roughness. At the same time, processing efficiency can be increased over 40%. This showed that the new method is capable of performing well in the field of mold cobalt-based alloy coating processing in the future.
