脉冲激光焊接温度场的红外热成像法测量  

Measurement of pulsed laser welding temperature field with infrared thermal imaging methods

作　　者：赵东升[1] 黄震宇[1] 缪唐军 刘玉君[1] 

机构地区：[1]大连理工大学工业装备结构分析国家重点实验室,船舶工程学院,辽宁大连116024

出　　处：《实验室科学》2017年第4期16-18,共3页Laboratory Science

基　　金：中央高校基本科研业务费(项目编号:DUT16QY45);大连理工大学教改基金(项目编号:MS2014089)

摘　　要：温度场是影响焊缝微观组织和力学性能的关键因素,传统的温度场测量方法响应时间长、测量精度差,为了解决这一问题采用非接触式的红外热成像法进行殷瓦钢激光焊接温度场的测量。利用测量的温度场数据计算焊接温度梯度和焊后冷却速率,分析激光焊接的温度场分布特点。学生通过实验操作了解并基本掌握了激光焊接和红外测温方法,同时锻炼了实验数据处理及分析的能力,为提高科研能力、解决科研问题提供基础。Temperature field is the key factor that influences weld microstructure and mechanical properties. Traditional temperature measurements have such defects such as long response time and low measurement precision. 1 n order to solve this problem,the non-contact infrared thermal imaging meth-od for Invar alloy is applied for the measurement of laser welding temperature field. The measured tem-perature field data is used to calculate welding temperature gradient and cooling rate,and to analyze the temperature field distribution characteristics of laser welding. Students are able to understand and master the basic operation through the laser welding experiment and infrared temperature measurement method. Meanwhile,the analysis ability of experiment data can be improved,which is of great help to improve ability of scientific research and problem solving.

关 键 词：温度场 红外热成像 殷瓦钢 激光焊 

分 类 号：TG456.7[金属学及工艺—焊接]