本文叙述了铬钼钢窄间隙埋弧焊用烧结焊剂的研制,结合生产使用中对该焊剂的特殊要求,提出了使用该焊剂时对脱渣性、氧化性、电弧稳定性及表面压坑的解决办法。通过各项性能的试验,结果表明:GZ-3,GZ-4焊剂生产制造过程简单,具有较高颗粒强度,较低吸潮性,焊接工艺过程稳定,达到了国内外同类型焊剂水平。 This article describes the development of narrow-gap submerged-arc welding of chromium-molybdenum steel sintered flux, combined with the production of the special requirements of the flux, put forward the use of the flux of slag removal, oxidation, arc stability and surface pressure pit Solution. Through the performance tests, the results show that: GZ-3, GZ-4 flux production process is simple, with higher particle strength, lower moisture absorption, the welding process is stable, reaching the same level of flux at home and abroad.