OK78.16为适用于焊接0.25C-1Cr-0.3Mo合金化淬火和回火钢种的CrMo合金化焊条。其焊缝金属的热处理要求与母板相同。OK78.16的焊缝金属还适合进行火焰硬化。采用OK78.16焊接高强度钢种应进行***低200°C的预热。TypicalTensilePropertiesAsweldedElongationTensileStrengthYieldStrength保护气体17%900MPa800MPaISO---AWS夏比V型缺口冲击性能AsweldedImpactValueTestingTemperature保护气体80J20°CISO焊缝金属分析MnMnMoCSiCr0.76%----MoMnMoCSiCr-0.2%---CMnMoCSiCr--0.17%--SiMnMoCSiCr---0.52%-CrMnMoCSiCr----1.15%熔敷数据Fusiontimeperelectrodeat90%Imaxkgweldmetal/kgelectrodesNumberofelectrodes/kgweldmetal安培熔敷率电压V直径58sec0.64kg70.075-100A0.90kg/h20V2.5x350mm78sec0.64kg32.5105-140A1.40kg/h21V3.2x450mm83sec0.66kg22.5145-195A1.90kg/h22V4.0x450mm86sec0.68kg15.0190-260A2.80kg/h23V5.0x450mm)