Preparation method of high performance metal magnetic powder core for high frequency nonpolar lamp circuit

Abstract

The utility model discloses a preparation method for a high performance magnetic powder core used for high frequency electrodeless lamp circuits, which is characterized in that first, the carbonyl iron dust with 0.4 to 0.5% carbon, 0.4 to 0.6% oxygen and 0.5 to 0.6% nitrogen, as well as a mean particle size of 1 to 8 micron, is dehumidified; second, the carbonyl iron dust is phosphatized by wet method; third, the carbonyl iron dust is compounded and covered by high temperature resistant silicone and is dried under vacuum and room temperature conditions to get finished carbonyl iron magnetic powder core; fourth, the carbonyl iron magnetic powder core is put into the mold and is processed by dry pressing, thus the high performance magnetic powder core used for high frequency electrodeless lamp circuit is acquired. The utility model has the advantages of adjustable range of magnetic permeability (Me:3 to 35), excellent factor of quality (Q value) under the circumstances that the working frequency is in the range of 100KHz to 100MHz, high stability of high direct current deflector field and low temperature rise magnetic permeability, and therefore is applicable to high frequency electrodeless lamps with the working frequency 2.65MHz.

Description

technical field [0001] The invention relates to a preparation method of a high-performance metal magnetic powder core used in a high-frequency electrodeless lamp circuit. Background technique [0002] The high-frequency electrodeless lamp is named for its high frequency of use (2.5-3.0MHz) and the electrodeless foam body. Its working principle is based on the latest application technology combining the two principles of fluorescent lamp discharge and high-frequency electromagnetic induction, and its life span is as long as 5 10,000 to 100,000 hours; the energy consumption of high-frequency induction lamps with the same power is only about 25% of incandescent lamps (the luminous flux of 40W high-frequency induction lamps is roughly equivalent to that of 500W incandescent lamps), and will not pollute the environment. Material recycling High efficiency, is a real environmental protection green light source. One of the key components in the high-frequency generating circuit of ...

AI Technical Summary

Problems solved by technology

The performance and manufacturing cost of the magnetic powder core directly affect the performance and cost of the high-frequency electrodeless lamp. At present, the types of metal magnetic powder cores mainly include iron powder cores, iron silicon powder cores, Sendust powder cores, Hi-Flux powder cores, MPP powder cores and non-polar powder cores. Crystal magnetic powder cores, nanocrystalline magnetic powder cores, etc. These magnetic powder cores have their own characteristics, the price difference is also large, and the preparation methods are also different. However, magnetic powder cores prepared by carbonyl iron powder have not been reported.