研究了碱性焊条工艺性的影响因素，探讨了焊缝金属的含氢量、焊条药皮的吸湿性、焊缝金属的强韧化特性等。
The influence factors such as the hydrogen content in weld metal, the hydroscopicity in electrode coating and the toughness of weld metal of basic electrodes are studied.
采用碱性药皮焊条和焊前接头预热的施焊方法，焊接的空间管道接头热应力小。
For overhead pipeline, welding with basic-compound coated electrodes and pre-welding heating of the joint will reduce the joint thermal -stress.
在碱性铁粉焊条药皮中添加不同量的纳米稀土氧化物粉体，对焊缝进行扩散氢含量、低温冲击及化学成分的测试和分析。
Adding the different nanometer CeO2 content to alkali iron powder electrode, the diffusible hydrogen content, low-temperature impact and chemical composition of the weld were tested.
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