Abstract
Defocused amount and Z-increments affect the accuracy and efficiency of thin-walled part with laser cladding forming. The key to obtain high-accuracy thin-walled part is to make the Z-increments equal the cladding height under initial defocused amount. In order to solve the problem of forming thin-walled part with high accuracy and efficiency, powder density distribution model of laser cladding system with coaxial-powder feeding is established based on the probability theory, the calculation formula of cladding height under different negative defocused amounts is given and experimentally verified. The calculation method of multi-layer cladding forming thin-walled part height under any negative defocused amount and Z-increment is proposed and experimentally verified. The results show that calculations of multi-layer cladding forming thin-walled part height are in accordance with experiments. Selecting self-regulation-effect negative defocused amount as large as possible, and making Z-increments equal the calculated value of cladding height under this defocused amount, the thin-walled parts with high forming efficiency and high accuracy can be obtained.
Original language | English |
---|---|
Pages (from-to) | 557-563 |
Number of pages | 7 |
Journal | Dalian Ligong Daxue Xuebao/Journal of Dalian University of Technology |
Volume | 57 |
Issue number | 6 |
DOIs | |
State | Published - Nov 1 2017 |
Keywords
- Defocused amount
- Laser technology
- Thin-walled parts forming
- Z-increments