The processing accuracy of epoxy gaskets directly affects the stability of their insulation performance. High precision machining can ensure the flatness, thickness uniformity, and edge integrity of the gasket surface, thereby reducing the risk of charge accumulation and partial discharge. If the machining accuracy is insufficient, such as burrs, cracks, or thickness deviations on the surface, it may lead to a decrease in insulation resistance, breakdown voltage, and even short-circuit faults. For example, thickness deviation exceeding the allowable range will directly affect the electrical strength test results, while excessive surface roughness may reduce the voltage resistance performance along the surface.

To control the machining accuracy, the following measures need to be taken:

Optimize machining process: Use CNC machining centers for high-precision cutting to avoid dimensional errors caused by traditional manual operations. For example, by adjusting the tool speed, feed rate, and cooling method, thermal deformation and vibration during the machining process can be reduced.

Strict quality inspection: Real time monitoring of gasket thickness and flatness is carried out using tools such as laser thickness gauges and micrometers to ensure that dimensional tolerances are controlled within ± 0.05mm. At the same time, ultrasonic testing technology is used to investigate internal cracks or delamination defects.

Environmental control: Processing is carried out in a constant temperature and humidity workshop (temperature 20 ± 2 ℃, humidity 50 ± 5%) to avoid material size changes caused by fluctuations in environmental temperature and humidity.

Material pretreatment: Stress relief annealing treatment is applied to the epoxy board to eliminate internal stress during processing and reduce the risk of warping and deformation.

Through the above measures, the processing accuracy of epoxy gaskets can be significantly improved, thereby ensuring the reliability of their insulation performance and meeting the high standard requirements for insulation materials in high-voltage equipment such as motors and transformers.