CO_2焊接过渡过程的仿真  

Emulation Study About CO_2 Arc Welding Transition

作　　者：范伟[1] 李慕琴[1] 王秀芝[1] 黄德臣[1] 

机构地区：[1]佳木斯大学,黑龙江佳木斯154007

出　　处：《焊接学报》2002年第4期81-83,96,共4页Transactions of The China Welding Institution

摘　　要：深入探讨了CO2 焊的短路过渡行为 ,试图通过计算机仿真的方法对CO2 焊短路过渡过程中的各种参数进行定量的分析。简化了焊接电源及弧长的数学模型。根据焊丝直径、送丝速度确定电感对燃弧的影响关系函数。把电感与短路峰值电流的关系近似为一个分段函数的数学模型。在根据切合实际的条件进行适当简化的基础上 ,确定了数学模型的边界条件 ,利用数值模拟的方法 ,推导出实用的数学模型。用计算机高级语言将模型编译成能在计算机上运行的程序软件 ,输出波形变化情况 ,通过模拟示波器即可以观察试验结果。In this paper,CO 2 arc welding transition is studied deeply and the parameters are analysed quantitatively.The mathematical models of wleding source and arc length are simplified and the relative function of inductance and arc is determined by welding wire diameter and feed in velocity.The relation of inductance and short circuit current is approached to the mathcmatical model of multizone function.A practical mathematical model is deduccd by numerical value imitation,the suitable simplification is done,and boundary condition is defined.The model is translated computer software by computer high language.The change of output waveform can be observed by simulated oscillograph.The results of emulation and practice are very close.

关 键 词：计算机仿真 CO2焊 数值模拟 二氧化碳保护焊 

分 类 号：TG444.73[金属学及工艺—焊接] TP391.9[自动化与计算机技术—计算机应用技术]