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Permanent magnetic ferrite slurry for improving performance of loudspeaker horn magnetic ring and preparation method of permanent magnetic ferrite slurry
According to the permanent magnetic ferrite slurry for improving the performance of the loudspeaker magnetic ring and the preparation method thereof, a strontium iron red pre-sintered material is taken as a main material, and calcium carbonate, silicon dioxide and aluminum oxide are taken as auxiliary materials. The preparation method of the permanent magnetic ferrite slurry for improving the performance of the loudspeaker horn magnetic ring comprises the following steps: putting the raw material main material strontium iron red pre-sintered material and the auxiliary materials calcium carbonate, silicon dioxide and aluminum oxide into a ball mill, adding water, and carrying out ball milling and uniform mixing to obtain the permanent magnetic ferrite slurry. The calcium carbonate, the silicon dioxide and the aluminum oxide are used for replacing boric acid to prepare the permanent magnetic ferrite slurry capable of improving the performance of the loudspeaker horn magnetic ring, and after the permanent magnetic ferrite slurry is pressed, molded and sintered by using a mold, boric acid piebald does not appear on the outer circle of the loudspeaker horn magnetic ring any more, and no obvious cracking phenomenon exists; meanwhile, the two magnetic performance indexes Br are larger than or equal to 4100 Gs, and Hcj is larger than or equal to 2750 Oe. Product magnetic performance and product appearance can be effectively improved, and product qualification rate can be improved to more than 90%.
改善扬声器喇叭磁环性能的永磁铁氧体浆料及其制备方法，该永磁铁氧体浆料，原料以锶铁红预烧料为主料，辅料为碳酸钙、二氧化硅、氧化铝。所述改善扬声器喇叭磁环性能的永磁铁氧体浆料的制备方法，包括以下步骤：将原料主料锶铁红预烧料和辅料碳酸钙、二氧化硅、氧化铝置于球磨机中，加水，球磨混合均匀，即成。本发明使用碳酸钙、二氧化硅、氧化铝取代硼酸，制备可改善扬声器喇叭磁环性能的永磁铁氧体浆料，使用模具压制成型、烧结后，扬声器喇叭磁环外圆不再出现硼酸花斑，也无明显裂开现象；同时磁性能两大指标Br≥4100Gs、Hcj≥2750Oe。可以有效改善产品磁性能及产品外观，提高产品合格率至90%以上。
Permanent magnetic ferrite slurry for improving performance of loudspeaker horn magnetic ring and preparation method of permanent magnetic ferrite slurry
According to the permanent magnetic ferrite slurry for improving the performance of the loudspeaker magnetic ring and the preparation method thereof, a strontium iron red pre-sintered material is taken as a main material, and calcium carbonate, silicon dioxide and aluminum oxide are taken as auxiliary materials. The preparation method of the permanent magnetic ferrite slurry for improving the performance of the loudspeaker horn magnetic ring comprises the following steps: putting the raw material main material strontium iron red pre-sintered material and the auxiliary materials calcium carbonate, silicon dioxide and aluminum oxide into a ball mill, adding water, and carrying out ball milling and uniform mixing to obtain the permanent magnetic ferrite slurry. The calcium carbonate, the silicon dioxide and the aluminum oxide are used for replacing boric acid to prepare the permanent magnetic ferrite slurry capable of improving the performance of the loudspeaker horn magnetic ring, and after the permanent magnetic ferrite slurry is pressed, molded and sintered by using a mold, boric acid piebald does not appear on the outer circle of the loudspeaker horn magnetic ring any more, and no obvious cracking phenomenon exists; meanwhile, the two magnetic performance indexes Br are larger than or equal to 4100 Gs, and Hcj is larger than or equal to 2750 Oe. Product magnetic performance and product appearance can be effectively improved, and product qualification rate can be improved to more than 90%.
改善扬声器喇叭磁环性能的永磁铁氧体浆料及其制备方法，该永磁铁氧体浆料，原料以锶铁红预烧料为主料，辅料为碳酸钙、二氧化硅、氧化铝。所述改善扬声器喇叭磁环性能的永磁铁氧体浆料的制备方法，包括以下步骤：将原料主料锶铁红预烧料和辅料碳酸钙、二氧化硅、氧化铝置于球磨机中，加水，球磨混合均匀，即成。本发明使用碳酸钙、二氧化硅、氧化铝取代硼酸，制备可改善扬声器喇叭磁环性能的永磁铁氧体浆料，使用模具压制成型、烧结后，扬声器喇叭磁环外圆不再出现硼酸花斑，也无明显裂开现象；同时磁性能两大指标Br≥4100Gs、Hcj≥2750Oe。可以有效改善产品磁性能及产品外观，提高产品合格率至90%以上。
Permanent magnetic ferrite slurry for improving performance of loudspeaker horn magnetic ring and preparation method of permanent magnetic ferrite slurry
改善扬声器喇叭磁环性能的永磁铁氧体浆料及其制备方法
CHEN YUNLONG (Autor:in) / LIU HUANLONG (Autor:in) / MAO BASHAN (Autor:in) / HUANG JIFENG (Autor:in) / WANG ZHONG (Autor:in) / HE LIU (Autor:in) / YUAN FEI (Autor:in) / CHEN WEIREN (Autor:in)
01.10.2024
Patent
Elektronische Ressource
Chinesisch
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