HANYouNG温控器ND4-pkNR07

施耐德双电源WATSGA-100/4P           WATSGB-100/4P                                 WATSNB-63A/4P施耐德双电源WATSGA-125/4P           WATSGB-125/4P                                 WATSNB-80A/4P施耐德双电源WATSGA-160/4P           WATSGB-160/4P                                 WATSNB-100A/4P施耐德双电源WATSGA-200/4P           WATSGB-200/4P                                 WATSNB-160A/4P施耐德双电源WATSGA-250/4P           WATSGB-250/4P                                 WATSNB-250A/4P施耐德双电源WATSGA-320/4P           WATSGB-320/4P                                 WATSNB-400A/4P施耐德双电源WATSGA-400/4P           WATSGB-400/4P                                 WATSNB-630A/4P施耐德双电源WATSGA-500/4P           WATSGB-500/4P                                 WATSNB-800A/4P施耐德双电源WATSGA-630/4P           WATSGB-630/4P                                 WATSNB-1000A/4P


搪玻璃面的焊缝应无明显的凸起。在这里告诉大家一个专业知识，金属基体凸起部位（也就是外圆弧部位）的搪玻璃层在较高温度下，由于搪玻璃层和金属基体热膨胀系数的差异，会受到拉应力的作用，而搪玻璃层是脆性材料，抗拉应力的性能很差。在金属基体上尽量减少凸起部位的出现，凸起的焊缝应尽量磨平。搪玻璃面不应有明显的凹坑。凹坑是修磨铁胎金属基体表面的缺陷留下的，凹坑越多，说明所用的钢板的表面质量差，这种钢板不适宜用于搪玻璃设备。