Idea of differential plane is introduced in the calculation of orientation of normal line , and optimal orientation for electron gun is obtained . this work is helpful for guaranteeing welding quality 在法线姿态的计算中,引入微分平面的设计思想,获得了焊接过程中的最佳姿态,保证了焊缝质量。
Electromechanical components for electronic equipment - basic testing procedures and measuring methods - soldering tests - test 12f - sealing against flux and cleaning solvents in machine soldering 电子设备用机电元件.基本试验规程和测量方法.钎焊性试验.试验12f :机械钎焊焊接过程中溶剂和清洗剂密封性
The " popcorn " fracture analysis was studied by introducing reasonable simplifications and taking advantage of the strain energy release rate expression involving the hydrothermal effect 利用本文提出的断裂判据，通过合理简化，作者对吸湿电子元件在高温焊接过程中发生的“爆米花”式脱层断裂进行了研究分析。
Patent control technology of dynamic characteristics and waveform , hard arc , stable welding current , little spatter , good welding surface , optimized matching parameters , welding speed increased by 100 - 200 % 专利动特性及波控技术，电弧挺度大，焊接过程稳定，飞溅少，成型美观，优化参数匹配，焊速可提高100 - 200 %
In the light of the problems during the tank bottom plate welding of 150000 m ^ 3 double - pontoon floating roof oil tank , the paper analyzes the deformation cause of tank wall shell in welding 摘要分析了15 10 ^ 4立方公尺双盘浮顶油罐罐底板焊接过程中出现的问题，提出焊缝收缩使得对接间隙变小是引起边缘板变形的主要原因。
Welding equipment consist of frame , automatic tracing stucture , automatic submerged arc - welding system and flux automatic recycling equipment , carry through automatic tracing and continues welding in the joins of steel cylinder 焊接速度快,劳动生产率高,设备自动化程度高,在焊接过程中,可任意改变焊接速度,设备占地面积小
Electromechanical components for electronic equipment - basic testing procedures and measuring methods - part 12 : soldering tests - section 6 : test 12f : sealing against flux and cleaning solvents in machine soldering 电子设备用机电元件.基本试验程序和测量方法.第12部分:焊接试验.第6节:试验12f :机械焊接过程中耐稀释和清洗剂用密封件
Based on c / os - embedded real time operating system ( rtos ) , the software control program of welding machine was completed . the introduction of rtos ensures the real time of the switch among the welding tasks 课题基于c / os -嵌入式实时操作系统( rtos )完成了焊机软件控制程序的编写, rtos的引入保证了焊接过程中任务之间切换的实时性。
In oder to overcome the defficults encounted in the weding process , incloding the bad wettability , long period and unsuitable for batch production , a new technic of impact - plating nickel is introduced , and this technic is simple and effective 实际应用表明，采用这一工艺，不仅较好地解决了不锈钢表面的润湿问题，而且焊接过程工艺简单、快捷。
During large power laser beam welding , the surface of the work - piece is melted and gasified , which is ionized and form plasma with the shielding gas on the condition of high temperature over the welded zone 在激光焊接过程中，当被焊材料受到高能激光束作用时，其表面会迅速熔化、气化，与外加的保护气体一起在被焊区域的上方电离形成等离子体云。
