The invention discloses a high-strength disc
porcelain insulator. The high-strength disc
porcelain insulator comprises an insulator body, a steel cap and a steel pin, wherein the steel cap and the steep pin are in gluing connection with two ends of the insulator body through gluing
layers; the insulator body of the high-strength disc
porcelain insulator comprises a core head, a core bar, an upperskirt and a lower skirt, and is prepared from 20wt%-40wt% of calcined
bauxite, 20wt%-40wt% of clay, 10wt%-15wt% of Nankeng
china clay from Pingxiang, 5wt%-10wt% of
tungsten pit mud from Yichun, 10wt%-20wt% of
feldspar, 3wt%-5wt% of Dazhang clay from Liling and 3wt%-5wt% of black clay from Guangdong through mixing,
dehydration clay squeezing, vacuum pugging, blank forming, fettling
sintering,
glazing, firing and gluing. Through structural and shape improvement,
raw material selection and formula and process adjustment, skirt surfaces are processed by reasonably selecting raw materials with specific performance on the premise that material cost is not increased and a product does not get hard or brittle, and
mechanical strength and various electrical properties of the insulator body are improved.