对含镍3．5％低温钢手工电焊条配方中稀土钇与硼的作用进行了试验研究。
The investigation of effects of rare-earth yttrium and boron, which are in the 3.5% nickel-containing steel welding electrode on low temperature toughness has been carried out.
本文着重论述了以螺旋机为生产手段的碱性低氢焊条的配方设计。
This paper describes the prescription design of the low hydrogen type basic electrode which is manufactured with screw type extrusion coater.
本文从理论上提出计算机辅助设计对焊条进行配方优化设计方法，为焊条的研制提供一条新途径。
It is a new approach for the formula of covered electrode by introducing computer aid optimize design.
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