In producing porcelain insulators(porcelain bushings), the most taboo impurities are iron, gypsum, and other impurities. The presence of these impurities will have many adverse effects on the performance of porcelain insulators, as follows:

1. The influence of iron

• Affects the color change: Iron will cause the color of porcelain insulators to change from white to gray or yellow, affecting the aesthetic appearance.

• Decreases the mechanical strength: The appearance of iron will decrease the mechanical strength of porcelain bushings, which will cause the bushings to crack, then affect the service life.

• Dielectric properties decline: Iron will also affect the dielectric properties of porcelain bushings, resulting in reduced resistance, and insulation performance, and then affect its use effect.

2. The influence of other impurities

• Internal defects: The dimples formed deep into the porcelain parts after the debris in the body is burned off, and the bubbles formed by the debris decomposition on the surface of the porcelain body will reduce the overall quality and reliability of the electric porcelain insulator.

• Enamel defects: such as small holes, pile glaze, creases, etc. that do not penetrate the porcelain body on the enamel surface, will also affect the insulation performance and appearance quality of the electric porcelain insulator.

3. Brief introduction

• Reduced safety performance: The presence of impurities may lead to partial discharge or breakdown of electric porcelain insulators in high voltage environments, failing power equipment, and affecting the safe and stable operation of the power system.

• Shortened service life: The reduction of mechanical strength and the increase of internal defects will accelerate the aging process of electric porcelain insulators and shorten their service life.

• Increased maintenance costs: Reduced performance and increased failure rates due to impurities increase maintenance costs and downtime for power equipment.

In summary, the production of porcelain bushings must strictly control the content of impurities, to ensure that the quality and performance of the product meet the requirements of use. Our flint pebbles with a high silica content of over 99%, low impurity, and superior wear resistance, can meet the demands well and are the ideal grinding media for porcelain bushings.

If you are interested in our flint pebbles, please contact us.