分析了在压力容器环缝组对及焊接中存在的错边、间隙不均匀以及焊接中熔池流动等问题。
The problems such as fissure of displacement, slit nonuniform and weld puddle flowing etc at the case of assembling and welding on orbital slit of pressure vessel are analyzed.
最后采用增大热传导系数的方法，考虑了熔池内流体流动对整个温度场的影响。
Finally, the fluid flow of the weld pool was taken into account by increasing the heat conduction coefficient at elevated temperature.
文中概括了近年来焊接熔池传热与流体流动模拟所取得的一些进展，总结了影响熔池传热和流体流动的一些主要因素。
In this paper, some progress attained in recent years on heat transfer and fluid flow in weld pool was summarized, then generalized the factors that influenced heat transfer and fluid flow greatly.
论述了粗丝co2自动焊焊枪的设计原理，并对气流在焊炬中的流动情况和对熔池保护效果作了简要介绍。
In this paper, design principle on gun of automatic CO2 gas shielded welding with thick electrode is discussed.
电渣熔铸过程中熔渣的流动决定了熔铸体系温度场的分布以及金属熔池的形状，最终影响熔铸钢锭的质量。
The flow of the molten slag pool determines the temperature distribution and the pool profiles in the electroslag casting process, which affects the quality of ingot casting.
对三维准稳态激光重熔问题进行数值模拟，模型考虑了熔池内金属液体的流动和换热。
With the non staggered grids, a three dimensional quasi state laser remelting problem, considering heat transfer and fluid flow, is numerically simulated.
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.
检测了炉渣的流动温度和岩相结构，分析了渣-钢之间化学反应的平衡状况和氧射流对熔池的作用。
The slag temperature and morphology were measured and observed. The equilibrium between the slag and melt and the reaction of oxygen jet with the bath were analyzed.
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.
虽然离子气流量的变化对穿孔熔池的孔径影响较小，但对熔池金属的流动性和焊缝成形影响较大。
The variation of the plasma gas flow can heavily influence the fluidity of the puddle metal and the weld formation though the diameter of the keyhole is hardly changed.
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.
激光深熔焊接的传热过程包括热传导和焊接熔池内熔融材料的对流流动。
The heat transfer in laser deep penetration welding includes heat conduction and convection in the 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.
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.
应用推荐