Development of an electrode intelligent design system based on adaptive fuzzy neural network and genetic algorithm

The coating on the electrodes contains many kinds of raw materials which affect significantly on the mechanical properties of deposited metals. It is still a problem how to predict and control the mechanical properties of deposited metals directly according to the components of coating on the electrodes. In this paper an electrode intelligent design system is developed by means of fuzzy neural network technology and genetic algorithm,, dynamic link library, object linking and embedding and multithreading. The front-end application and customer interface of the system is realized by using visual C ＋＋ program language and taking SQL Server 2000 as background database. It realizes series functions including automatic design of electrode formula, intelligent prediction of electrode properties, inquiry of electrode information, output of process report based on normalized template and electronic storage and search of relative files.     

弹带熔敷扩散焊接技术研究

本研究探索了一种新的焊接工艺方法-熔敷扩散焊接方法,采用该方法在30口径弹体上焊接纯铜弹带取得成功.试验表明,焊缝成型良好,在弹体不发生熔化的前提下实现了冶金结合.结合界面平直光洁,弹带中无泛铁现象发生,界面与弹带内基本无缺陷,轴向剪切强度,切向扭转剪切强度均大于弹带自身强度.靶试试验表明,熔敷焊接弹带性能满足弹药射击性能要求.     

焊条药皮颗粒度对焊缝金属结晶模式及微观组织影响初探

初步探索了奥氏体电焊条药皮颗粒度对焊缝加金属化学成分、结晶模式及微观组织的影响,选取药皮成分中大理石和部分铁合金开展了颗粒形态和颗粒度均匀化研究。     

焊条性能神经网络非线性组合智能预测模型

通过试验测定焊条熔敷金属的断后伸长率和冲击吸收功等力学性能,以多层前馈神经网络(BP)、径向基函数神经网络(RBF)、自适应模糊神经网络(AFNN)3种方法获得的单一预测模型的计算值作为输入参数,建立焊条熔敷金属力学性能神经网络非线性组合预测模型.利用42组试验样本对模型进行训练和验证.结果表明,断后伸长率和冲击吸收功...     

微控PMIG焊机的抗干扰措施研究

本文对微控弧焊设备信号干扰问题进行了分析，并针对自行研制的单片机控制ＰＭＩＧ焊机，采取了交流噪声滤波器、ＭＯＣ５０１０线性隔离电路等硬件抗干扰措施，编制了主程监视中断、入口处查验等软件，解决程序跑飞。经频繁开关大功率用电设备与高频引弧器测试证明，设备抗干扰性能良好。     

Prediction of mechanical property of E4303 electrode using artificial neural network

Based on the method of artificial neural network, a new approach has been devised to predict the mechanical property of E4303 electrode. The outlined predication model for determining the mechanical propert) of electrode was built upon the production data. The research leverages a back propagation algorithm as the neural network‘ s learning rule. The result indicates that there are positive correlations between the predicted results and the practical production dota. Hence, using the neural network, predication of electrode property can be realized. For the first time, this research prorides a more scientific method for designing electrode.     

微控PMIG焊机的抗干扰措施研究

本文对微控弧焊设备信号干扰问题进行了分析,并针对自行研制的单片机控制PMIG焊机,采取了交流噪声滤波器、MOC5010线性隔离电路等硬件抗干扰措施,编制了主程监视中断、入口处查验等软件,解决程序跑飞。经频繁开关大功率用电设备与高频引弧器测试证明,设备抗干扰性能良好。     

重要承载钢结构氢致裂纹影响因素分析

Q390低合金高强钢焊接时存在一定的冷裂倾向.对于具有较大拘束应力状态的Q390钢结构,需研究其熔敷金属氢致裂纹的影响因素,而氢致裂纹是由焊接过程中产生的扩散氢引起,故采用甘油法相对比较和分析了不同焊丝类型、不同环境湿度对Q390钢熔敷金属扩散氢含量的影响.结果表明,相同湿度下,实心焊丝熔敷金属扩散氢含量均明显小于药芯...     

淬火对R60702焊接接头微观组织及耐腐蚀性影响研究

研究不同温度淬火处理对焊态R60702各区域微观组织及耐腐蚀性能的影响.结果表明,焊态R60702合金在α相区低温淬火,焊缝及热影响区为针状马氏体组织,母材为等轴晶组织,但金属间化合物在晶界处聚集.β相区高温淬火,焊缝及热影响区为稍粗针状马氏体组织,母材转变为细针状马氏体组织.耐腐蚀试验表明,两种组织均降低R60702合金的耐腐蚀性.     

光学传感技术在熔池信息检测中的应用

列出了近期国内外研究人员在熔池信息检测中所研制和应用的光学传感技术，如脉冲激光频闪法、红外检测法、同轴检测法、普通摄像机直接检测法。分析了各种方法的优缺点，并展望了光学传感器在未来焊接熔池信息检测中的应用前景及下一步研究工作的方向。