btsbdzg
ISO K 铸铁 - Sandvik Coromant
2018年5月30日 ... 球墨铸铁的焊接工艺： ⑴气焊焊丝采用型号为RZCQ型球墨铸铁焊丝（ ... 焊前应将焊 件预热至500℃左右，焊后保温缓冷，经退火焊补处有可能进行切削加工（硬度 200HBS）。 ... 由于可锻铸铁中的碳、硅含量比灰铸铁低，异质焊缝熔焊时焊缝及半 ... 采用牌号为Z288钢芯蠕墨铸铁电弧冷焊焊条，焊芯材料H08A，外涂强 ...
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