CAJ | 학술논문

为了改善采用焊条电弧焊工艺焊接2．25Cr-1Mo-0．25V钢的熔敷金属的低温冲击性能，特别是-30℃低温冲击性能，以及熔敷金属的步冷回火脆性，同时能够更好地掌握和了解该类焊条的操作特性。文中以CMA-106HD焊条为例，在焊接过程中采用了不同的操作方式对不同批号的焊接材料进行了试验和分析，同时采用该类焊条对不同厚度的该类铬钼钒钢试板进行了焊接工艺评定。通过对焊缝熔敷金属进行化学成分分析和步冷试验，研究了焊缝金属中Si含量的变化对焊缝的低温冲击的影响，同时以此来分析焊条的工艺性。结果表明，对于不同Si含量的焊条，可以采用不同的焊接参数和操作技巧来有效控制熔敷金属中的Si含量，从而提高焊缝金属的综合性能。
위료개선채용한조전호한공예한접2．25Cr-1Mo-0．25V강적용부금속적저온충격성능，특별시-30℃저온충격성능，이급용부금속적보랭회화취성，동시능구경호지장악화료해해류한조적조작특성。문중이CMA-106HD한조위례，재한접과정중채용료불동적조작방식대불동비호적한접재료진행료시험화분석，동시채용해류한조대불동후도적해류락목범강시판진행료한접공예평정。통과대한봉용부금속진행화학성분분석화보랭시험，연구료한봉금속중Si함량적변화대한봉적저온충격적영향，동시이차래분석한조적공예성。결과표명，대우불동Si함량적한조，가이채용불동적한접삼수화조작기교래유효공제용부금속중적Si함량，종이제고한봉금속적종합성능。
Aiming to improve low temperature impact performance of electrode deposited metal for welding 2.25Cr-1Mo-0.25V by SMAW and specify -30℃low temperature impact performance as well as step-cooling temper brittle-ness of deposited metal and meanwhile master operational property of the electrode , taking CMA-106HD electrode as example , test and analysis have been conducted on several lots of welding material by various of operational manners in the process of welding , furthermore welding procedure has been qualified regarding to the same Cr-Mo-V sheet speci-men of various thicknesses by applying these electrodes .Through chemical composition analysis and step-cooling test of weld deposited metal , influence of Si content varying in weld on weld low temperature impact has been researched in order to analyze electrode performance .The result showed that Si content in deposited metal could be controlled by ap-plying special welding parameter and operational method for electrodes of Si content differentia to improve integrated properties of weld metal .