建立了熔池表面存在变形的流场与热场的数学模型。
A mathematical model has been established for fluid flow and heat transfer in weld pool with a deformed surface.
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。
With smooth constraint condition of the welding pool surface and variable factor successive over relaxation(SOR) method, the height of welding p…
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。
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.
结果表明，熔池表面和底部的温度都低于电弧焊，这是造成低稀释率的根本原因；
The result shows that the temperatures of molten pool surface and bottom are lower than those ones in arc welding. This is main cause of formation of low dilution rate.
结果表明：重熔电流从坩埚壁经熔池表面流回电极，铸锭和坩埚底部几乎没有电流；
The results show that the current flows during VAR from crucible wall to the electrode via the surface of the ingot melt pool, and the currents in the crucible base and the ingot base are almost zero.
在激光材料加热中，由于存在着表面张力驱动的流动，熔池表面附近熔体的速度梯度很大。
A thin surface layer always exists near the surface of laser heating melt pool due to the fluid flow driven by the surface tension gradient.
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。
The calculated results of current density and heat flux on flat weld pool surface using model established in this paper are agreed with experiment.
使用M9100图像高温仪精确测定了TC 4合金电子束冷床熔炼时坩埚和冷床熔池表面的温度。
The surface temperature of melt pool in crucible and hearth of TC4 alloy during electron beam cold hearth melting was measured accurately by using M9100 pyrometer.
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。
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.
熔池中存在的对流和激光扫描过程中工作台运动的不稳定造成了熔池表面波纹状组织和熔池中三维条带状组织的出现。
Two kinds of banded structure caused by convection and unstable moving of the worktable have been observed on the surface of the molten pool and in the melted region.
在激光辅助添加制造过程中，他们发射了一个红外激光束，在基板表面上就形成了熔池。
During the laser-aided additive manufacturing process, the researchers fired a beam from an infrared laser to form a melt pool on the substrate surface.
详细分析了等离子束表面冶金熔池的凝固机理、凝固特征及对凝固组织的影响。
The freezing mechanics, characteristic and influence on structure of plasma-jet surface metallurgy have been analyzed in full.
钢锭侧面凝固前沿位置即金属熔池具有无圆柱部分是判断电渣锭表面质量优劣的基本依据。
The main basis of deciding ESR ingot surface quality is that there is a cylinder part or not in ingot side freezing forward position -metallic molten pool.
在表面冶金过程中等离子束产生感生磁场，使熔池内液态金属产生对流运动。
Plasma transferred arc produces the induced electromagnetic field that makes liquid metal convect in molten pool in the surface metallurgical course.
建立了一个近红外CCD熔池动态信息的图像检测系统，用于钢表面铜熔池视觉信息的检测。
An image detect system with near infrared CCD for monitoring the copper weld pool on the surface of steel was established.
影响等离子表面冶金熔池中合金熔体粘度的主要因素是电流和粉末体系中的合金元素。
The electric current and alloy elements in powder system are major factors for influencing melt viscosity in surface metallurgy by plasma beam.
在凝固准稳态阶段，熔池熔深和半径变化较小，但表面最高温度、熔池流速急剧减小；凝固加速阶段则反之。
At quasi - state stage, the depth and radius of laser pool have small changes, but the highest surface temperature and velocity of molten pool decease rapidly.
建立了一个近红外CCD熔池动态信息的图像检测系统，用于钢表面铜熔池视觉信息的检测。
An image detect system with near infrared CCD (charge coupled devices) for monitoring the copper weld pool on the surface of steel was established.
表面活性元素硫主要是通过改变熔池中流体的流动方式来影响熔池的形状和尺寸。
Sulfur can significantly influence the shape and size of the weld and final weld metal solidification structure by altering flow patterns.
在电弧与熔池统一模型的基础上研究熔池上表面变形对电弧行为特征的影响。
This paper studied the effects of weld pool surface deformation on welding arc behavior characters basing on unified arc pool mathematical model.
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。
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.
论文对等离子束表面冶金过程中熔池的区域性、熔池中熔体的流动特征、化学冶金过程以及温度场进行了详细研究。
The regional metallurgical process, flowing characteristics of melt, the chemical metallurgical process and temperature field of the molten bath have been analyzed in full.
目前实时检测的内容主要有焊接过程的稳定性、装配质量、离焦量、焊缝熔深和表面形貌、熔池与小孔的形态等。
The present research mainly focuses on detecting the processing stability, assembly quality, defocusing, weld penetration, weld shape, pool and keyhole, etc.
结果表明，焊接电流和表面张力温度系数对熔池内部流动有着至关重要的影响，决定了TIG熔池的截面形貌。
The results showed that: the welding current and surface tension temperature coefficient has a critical influence on the internal flow of weld pool and determines the shape of TIG welding pool.
结果表明，焊接电流和表面张力温度系数对熔池内部流动有着至关重要的影响，决定了TIG熔池的截面形貌。
The results showed that: the welding current and surface tension temperature coefficient has a critical influence on the internal flow of weld pool and determines the shape of TIG welding pool.
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