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- The GBE model for simulation of grain structures in welding pool is introduced. 介绍了焊接熔池组织模拟的GBE模型。
- Now in A-TIG welding, the coefficient of arc shrinking and the weld pool surface tension result in penetration increased. 目前认为A-TIG焊使熔深增加的机理是电弧收缩和表面张力共同作用的结果。
- But current density and heat flux on deformed weld pool surface are not similar Gauss distribution. 而变形熔池表面的电流密度和热流密度分布则不再符合近似的高斯分布。
- In the experiment, two tungsten electrodes set on both sides of weld pool provide transverse current to the pool. 实验通过布置在熔池两侧并随激光同步运动的钨电极向熔池中提供横向电流。
- An approach is proposed that this deviation can be obtained by using the weld pool image centroid and a Kalman filter. 为此提出一种利用熔池图像质心和卡尔曼滤波来间接获取电弧与焊缝偏差的方法。
- The key to the surface height calculation of pulse GTAW welding pool based on shape from shading (SFS) is to build up a surface model of welding pool. 利用从阴影恢复形状方法计算熔池表面高度的关键是建立熔池表面反射模型。
- Passive visual sensing method is the major method for sensing welding process, the principle of which is to capture weld pool image by the illumination of electric arc. 被动式视觉传感方法是焊接过程传感的一种主要方法，其主要原理是利用电弧光照射熔池表面获得熔池图像。
- Firstly, the effect of the deformation in the molten weld pool was eliminated after the element rebirth method was adopted. 首先,通过单元再生方案,消除了焊接构件中熔池变形对熔池尾部应力应变场的影响。
- A robotic vision sensing system for taking and processing the image of MIG welding pool of aluminum alloy is established. 建立了用于铝合金脉冲MIG焊熔池图像检测的机器人视觉传感系统。
- With smooth constraint condition of the welding pool surface and variable factor successive over relaxation(SOR) method, the height of welding p... 利用熔池表面光滑模型和变因子超松弛方法计算了熔池表面的高度。
- The calculated results of current density and heat flux on flat weld pool surface using model established in this paper are agreed with experiment. 用本模型计算出的平坦熔池表面电流密度和热流密度的分布与试验结果显示了很好的一致性。
- However, there is a little increase of the weld pool temperature.While the thickness increases to an extent, the RSF show little increase. 当壁厚增大到一定程度时，在线焊接管道的剩余强度因子增大速度减缓。
- A three-dimensional numerical analysis model of fluid flow and heat transfer in pulsed current TIG weld pool is developed. 对运动电弧作用下脉冲TIG焊接熔池流场与热场动态变化过程建立了三维数学模型。
- The calculating formulas of top and bottom pool-surface deformation in TIG full-penetration weld pool is developed based on principles of fluid mechanics and variation calculus. 根据流体力学理论和变分法原理，推导出了熔透情况下TIG焊接熔池上表面和下表面变形的方程。
- In pulsed GTAW with wire filler,the variation of the weld pool shape could be observed from the weld pool image,such as the pool width,length,rear angles,surface height,etc. 在填丝脉冲GTAW过程中,从熔池图像上可以观察到熔池形状的变化,如宽度、长度、后拖角和表面高度等。熟练焊工可以根据变化的情况实时地调整焊接规范,保证焊缝成形稳定。
- Real-time sensing and control of weld pool dynamics are important techniques to ensure expected weld quality because there are many uncertain effects especially during aluminum alloy welding process. 由于铝合金焊接过程中存在很多不确定因素,实时的检测和控制熔池动态过程是保证焊接质量的一种重要方法。
- The qualitative analysis is carried out on the behavior of the partial penetrated weld pool with welding current changing from pulsed peak value to base value during pulsed TIG welding. 对脉冲TIG焊未熔透型熔池在脉冲峰-基转换期间熔池三维形态变化行为进行了定性的分析,并从力和能量角度建立了未熔透熔池液面形态的数学模型。
- Based on the characteristics of the weld pool which are obtained through the analysis of a great lot of images,an image processing algorithm that can detect the integral edge of the weld pool is developed,which doesn't need to reduce the disturbance. 对大量的焊接熔池图像进行了分析 ,根据图像的特点 ,设计出不需要滤波的图像边缘检测算法 ,检测出了连续电流TIG焊接熔池的整个边缘。
- In this paper, the application of passive visual sensing in pulsed GMAW is deeply analyzed. Through composite filter technology can solved interfered by electric arc and can achieved clear high contrast images of weld pool. 本文对这种传感方法在脉冲GMAW焊中的应用情况进行了深入分析，提出了采用由窄带、宽带滤光片，中性减光片和吸热片组成的复合滤光技术，从而解决了电弧光对成像的干扰问题，获得了清晰度高、对比度强的熔池图像。
- Let's dunk in the pool before dinner. 我们饭前到池塘里泡一会儿。
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