Effect of different thermal properties on the hump defect formation of laser fuse additive

Jiangqi Long; Jie Zheng

doi:10.1117/12.2635186

25 April 2022 Effect of different thermal properties on the hump defect formation of laser fuse additive

Jiangqi Long, Jie Zheng

Proceedings Volume 12244, 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022); 122441M (2022) https://doi.org/10.1117/12.2635186
Event: 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022), 2022, Guilin, China

Abstract

Laser fuse additive manufacturing is a new manufacturing technology, it is widely used in automobile, aerospace and other fields. However, to obtain high efficiency deposition in additive manufacturing process, hump and other defects are prone to occur. The change of process parameters will lead to the change of heat transfer flow of molten pool, and the change of temperature will lead to the change of thermal physical parameters, which will lead to the formation of hump defects. In order to study the influence of thermal conductivity and dynamic viscosity on hump defects. In this paper, a threedimensional transient numerical model is established to analyze the heat transfer of molten pool, fluid flow and the formation of hump defects. The results show that when the thermal conductivity is smaller, the viscosity coefficient is smaller, the flow phenomenon in the molten pool is more intense, and it is easier to form the hump defect. The results are helpful to guarantee the deposition quality of laser fuse additive manufacturing.

Citation Download Citation

Jiangqi Long and Jie Zheng "Effect of different thermal properties on the hump defect formation of laser fuse additive", Proc. SPIE 12244, 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022), 122441M (25 April 2022); https://doi.org/10.1117/12.2635186

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available