本文分析了高压氨洗塔中四种复杂的异种钢接头的焊接性能，对接头坡口设计、焊材的选用、工艺规范的选取进行了深入的探讨。
The paper analyses the weldabilities of four kinds of dissimilar metals welding joints and also discusses the design of welding grooves, selection of filler metals and welding code.
建立了焊接方法选择、焊材选择和坡口选择的计算机推定模型。
The computer reasoning models of selecting system of welding method, welding material and welding groove were established in the paper.
提出一种新型的能够保证熔体在口模出口处速度及压力均匀分布的片材机头。
A new type sheeting die which can guarantee the polymer fluid get the even velocity and pressure distribution at the mold export was put forward.
本文分析了异型(圆环型与矩形的组合)材成型时塑料熔体在模头中的流动机理，并给出了模口成型长度的设计方法。
While profile, the cross section was composed of annulus and rectangle, was extruded, the flow mechanism the plastic melt in the die was analyzed and the design method of die land was given.
对母材熔深作了剖析，结合实验数据详述了母材熔深与余高的关系以及母材熔深与坡口熔深、钝边熔深的关系，并且提出了关系式。
It analyzes the base metal's penetration. It discusses the relations of base metal's penetration to reinforcement, base metal's penetration to groove penetration, root penetration and pro...
对母材熔深作了剖析，结合实验数据详述了母材熔深与余高的关系以及母材熔深与坡口熔深、钝边熔深的关系，并且提出了关系式。
It analyzes the base metal's penetration. It discusses the relations of base metal's penetration to reinforcement, base metal's penetration to groove penetration, root penetration and pro...
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