FL-DLight3-4000激光器激光熔覆过程温度场数值模拟分析

doi:10.16180/j.cnki.issn1007-7820.2021.11.001

摘要/Abstract

摘要：

激光熔覆技术有着良好的发展前景。文中利用ANSYS中的生死单元法模拟了基体在激光熔覆过程中的温度场,利用APDL语言编写加载移动矩形热源。通过对温度场的模拟,得出了不同的激光功率及扫描速度对温度场的影响,即功率越大,其基体(45钢)同时间内升高到相同温度所需时间越少;扫描速度越快,基体同时间内升温越慢。文中初步探究了激光熔覆中存在的端部效应问题,结果表明,采用预留方案能有效地解决端部效应问题。最后,基于机器人控制的FL-DLight3-4000激光器进行了试验,采用旁轴送粉喷嘴进行送粉,设置激光功率为3 kW,扫描速度为0.005 m·s^-1,送粉率25 g·min^-1。文中测量了距离第一道熔覆层中心25 mm处的不同时刻的温度,并与ANSYS中的模拟结果进行比较,证明试验结果与模拟结果基本一致。

关键词: 激光熔覆, ANSYS, 生死单元法, APDL语言, 基体温度场, 矩形移动热源, 端部效应, FL-DLight3-4000激光器

Abstract:

Laser cladding technology has a huge development prospect. In this study, the temperature field of matrix during laser cladding is simulated using the life and death unit method in ANSYS, and the moving rectangle heat source is loaded by APDL language. Through the simulation of the temperature field, the influence of different laser power and scanning speed on the temperature field are obtained. The higher the power, the less the time it takes for the matrix (45 steel) to rise to the same temperature at the same time. The faster the scanning speed is, the slower the substrate heats up at the same time. The end effect problem in laser cladding is preliminarily explored, and the results show that the end effect problem can be solved more effectively by adopting the reserved scheme. Finally, based on the robot control of FL - DLight3-4000 laser is tested. A side-axis powder feeding nozzle is used for powder feeding, the laser power is set to 3 kW, the scanning speed is 0.005 m·s^-1, and the powder feeding rate is 25 g·min^-1. The temperature at different times at 25 mm from the center of the first cladding layer is measured, and compared with the simulation results in ANSYS, which proves that the test results are basically consistent with the simulation results.

Key words: laser cladding, ANSYS, life and death unit method, APDL language, matrix temperature field, rectangular moving heat source, end effect, FL-DLight3-4000 laser

中图分类号:

TP391.9

徐洋洋,伞红军,陈久朋,谢飞亚,魏顺祥,王汪林,刘亮,陈佳. FL-DLight3-4000激光器激光熔覆过程温度场数值模拟分析[J]. 电子科技, 2021, 34(11): 1-10.

XU Yangyang,SAN Hongjun,CHEN Jiupeng,XIE Feiya,WEI Shunxiang,WANG Wanglin,LIU Liang,CHEN Jia. Numerical Simulation Analysis of Temperature Field in LaserCladding of FL-DLight3-4000 Laser[J]. Electronic Science and Technology, 2021, 34(11): 1-10.

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性能指标	性能参数
波长	9 nm
功率范围	0~4 000 W
模式	多模
功率稳定性	≤1%
光束直径	2 mm×14 mm
工作方式	连续