Method for dipping capacitor for energy-saving lamp

Abstract

The invention discloses a method for dipping a capacitor for an energy-saving lamp, comprising the following steps of: (a), placing an internal seal material in a vacuum defoaming machine, and stirring for defoaming for 10-15 minutes, and taking out the dipping material until no foam exists; (b), delivering a capacitor core into a tunnel preheating oven for preheating for 30-60 minutes at 90-110 DEG C; (c), dipping after vacuumixing during internal seal, wherein the vacuum degree is no less than 0.09 MPa, and carrying out internal dipping once for 40-60 seconds; (d) carrying out heat treatment for 50-70 minutes at 90-100 DEG C firstly after internal seal, and then carrying out the heat treatment for 110-130 minutes at 110-120 DEG C. The invention can greatly improve the performance of the production, and dipping are carried out after vacuumizing during internal seal so that negative pressure is formed inside the capacitor core, the epoxy encapsulating material can be sufficiently dipped and gas inside the product is completely discharged, thereby the voltage resistance of the product is improved.

Description

technical field [0001] The present invention relates to a method of impregnating capacitors. Background technique [0002] In the production process of capacitors, the capacitors are impregnated under strict vacuum to improve the appearance quality of capacitors and the reliability and service life of capacitors. The current impregnation method is: after the capacitor core is processed, it is encapsulated with epoxy encapsulation material. The method is divided into two inner seals. The process is first impregnated and then vacuumed. The post-heat treatment time was 4 hours, and the temperature was 100°C. In the existing impregnation method, first impregnate and then vacuumize, so that the epoxy encapsulating material cannot be fully impregnated, and the gas inside the product cannot be completely discharged and remains inside the product. When a voltage is applied, the gas ionization will cause dielectric damage, and the voltage resistance performance is poor. Contents o...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an impregnation method for capacitors for energy-saving lamps, which can effectively solve the problem that the existing impregnation method cannot fully impregnate the epoxy encapsulation material, gas remains in the product and gas ionization occurs, resulting in dielectric damage and poor voltage resistance. question