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微合金化铸铁同质电焊条和气焊丝为国家发明专利产品(专利号:ZL200510096376.8,ZL200510042917.9,ZL200520079040.6),获2008年度西安市科技进步三等奖。1.技术特点(1)施焊温度低,工艺性好;(2)焊缝成分和组织与母材一致;(3)焊区色泽与铸件本体一致;(4)焊区车铣钻刨磨均可,机加工性能优良。2.性能指标(1)强度灰铸铁接头:σ_b≥200MPa;球墨铸铁接头:σ_b≥400MPa。(2)硬度焊区硬度与焊区冷却冷率密切相关,在HB180-HB275范围。
Micro-alloyed cast iron homogeneous welding electrodes and gas welding wire for the national invention patent products (Patent No .: ZL200510096376.8, ZL200510042917.9, ZL200520079040.6) won the 2008 Xi’an Science and Technology Progress Award. 1.Technical characteristics (1) The welding temperature is low, the technology is good; (2) The welding seam composition and organization are the same with the base metal; (3) The welding zone color is consistent with the cast body; (4) Can be, machining performance is excellent. 2. Performance (1) strength gray cast iron joints: σ_b ≥ 200MPa; ductile iron joints: σ_b ≥ 400MPa. (2) Hardness zone hardness and cooling zone cooling rate is closely related to the HB180-HB275 range.