【清大圣科气化炉反骗子】不锈钢焊条的种类应用区分

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故一般焊前必须进行预热及层间保温，焊后尚未冷却前进行高温回火。××清大圣科& times;清大圣科电焊条×清大圣科电焊条设备×清大金桥×清大金 桥电焊条设备×清大圣科气化炉×www.qhsk.cn×清大圣科科 技有限公司×× 　　

焊前，焊件应进行200℃左右预热，焊后进行800℃左右的回火处理。××清大圣 科×清大圣科电焊条×清大圣科电焊条设备×清大金桥×清 大金桥电焊条设备×清大圣科气化炉×www.qhsk.cn×清大圣 科科技有限公司××也可采用铬镍不锈钢焊条（如CHS107、CHS207），焊 后不进行热处理。××清大圣科×清大圣科电焊条×清大圣 科电焊条设备×清大金桥×清大金桥电焊条设备×清大圣科气化炉&ti mes;www.qhsk.cn×清大圣科科技有限公司××
　
铬17不锈钢的焊接：此类铬钢通常为改善耐蚀性及可焊性而加适量的稳定化元素钛、铌、钼，可焊性较铬13钢 为好，可采用同类型的铬不锈纲焊条（CHK302、CHK307）焊接。××清大 圣科×清大圣科电焊条×清大圣科电焊条设备×清大金桥× 清大金桥电焊条设备×清大圣科气化炉×www.qhsk.cn×清大 圣科科技有限公司××
马氏体不锈钢的焊接：马氏体不锈钢包括含铬5~9%的中铬钢和含铬12%的高铬钢。×&tim es;清大圣科×清大圣科电焊条×清大圣科电焊条设备×清大金桥&t imes;清大金桥电焊条设备×清大圣科气化炉×www.qhsk.cn&tim es;清大圣科科技有限公司××此类钢淬硬倾向大，焊后易产生高硬度的马氏体和贝 氏体使脆性增加，残余应力也较大，容易产生冷裂缝。××清大圣科×清 大圣科电焊条×清大圣科电焊条设备×清大金桥×清大金桥电焊条设备& times;清大圣科气化炉×www.qhsk.cn×清大圣科科技有限公司&t imes;×
铬13不锈钢的焊接：此类铬钢焊接后硬化性较大，容易产生裂纹，若采用同类的铬不锈钢焊条（CHK202、 CHK207）焊接，则必须进行300℃以上的预热和焊后700℃左右的回火缓冷处理。×&t imes;清大圣科×清大圣科电焊条×清大圣科电焊条设备×清大金桥 ×清大金桥电焊条设备×清大圣科气化炉×www.qhsk.cn&t imes;清大圣科科技有限公司××
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