500kV户外耐污型棒形瓷绝缘子上釉上砂工艺改进

对500kV户外耐污棒形瓷绝缘子主体杆径开裂现象进行了分析,认为采用卧式淋釉法上釉上砂工艺,坯体受力复杂,对坯体的破坏较严重。采用悬挂式喷釉法上釉上砂工艺,制定了各项工艺参数,釉浆水分控制在30%～35%,坯体转速应为60r/min～80r/min,釉浆温度在60℃～90℃,坯体温度在40℃～60℃,釉层厚度为0.3 mm～0.5 mm,釉浆压力为0.3MPa～0.5MPa。消除了500kV户外耐污型棒形操作瓷绝缘子主体杆径开裂现象。

Innovation of Sanding and Glazing Process for 500 kV Outdoor Anti-pollution Post Insulator

Analysis was mode on fracture phenomena on trunk of 500 kV outdoor anti-pollution post insulator,which revealed complicated harmful stress on insulator body at pouring glazing and sanding in horizontal position.Spray glazing and sanding on suspending and rotating body was introduced,with following processing parameters: water content of glaze slurry of 30%～35%,rotating rate of insulator body of 60 rmp～80 rmp,slurry temperature of 60 ℃～90 ℃,body temperature of 40 ℃～60 ℃,glaze layer thickness of 0.3 mm～0.5 mm,pressure of glaze slurry of 0.3 MPa～0.5 MPa.Thus,the trunk fracture of 500 kV outdoor anti-pollution post insulator was eliminated.