A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for improving radial shrinkage of permanent magnetic ferrite magnet
The invention relates to the technical field of permanent magnetic ferrite materials, in particular to a method for improving radial shrinkage of a permanent magnetic ferrite magnet. Dividing a plurality of ball milling time periods and continuous ball milling time periods; dividing the auxiliary material into a plurality of equal parts according to the number of the ball milling time periods; putting the pre-sintered material and the balls into a ball mill, carrying out ball milling treatment, and respectively adding 1 part of auxiliary material in each ball milling time period until the ball milling treatment of a plurality of ball milling time periods is finished, so as to obtain raw material balls; continuously carrying out ball milling treatment on the raw material balls in the continuous ball milling time period; adjusting the water content in the raw material balls, and forming in a magnetic field to obtain a to-be-sintered material; sintering the to-be-sintered material to obtain a sinter; and grinding and processing the sinter to prepare the permanent magnetic ferrite, and finally obtaining the permanent magnetic ferrite which has the characteristics of high comprehensive magnetic performance, small radial shrinkage, good orientation degree and high grain refinement, so that the shrinkage efficiency of radial shrinkage of the permanent magnetic ferrite magnet is improved.
本发明涉及永磁铁氧体材料技术领域，具体涉及一种改善永磁铁氧体磁体径向收缩的方法；划分多个球磨时间段和持续球磨时间段；根据球磨时间段的段数，将辅助料划分为多等份；将预烧料和球放入球磨机，进行球磨处理，在每个球磨时间段，分别添加1份辅助料，直至完成多个球磨时间段的球磨处理，得到原料球；在持续球磨时间段中继续对原料球进行球磨处理；调整原料球中的含水量，并在磁场中成型，制得待烧料；对待烧料进行烧结，得到烧结物；对烧结物进行打磨加工，制得永磁铁氧体，最后得到永磁铁氧体具有综合磁性能高、径向收缩小、取向度好、晶粒细化高的特点，通过上述方式，实现提高永磁铁氧体磁体径向收缩的收缩效率。
Method for improving radial shrinkage of permanent magnetic ferrite magnet
The invention relates to the technical field of permanent magnetic ferrite materials, in particular to a method for improving radial shrinkage of a permanent magnetic ferrite magnet. Dividing a plurality of ball milling time periods and continuous ball milling time periods; dividing the auxiliary material into a plurality of equal parts according to the number of the ball milling time periods; putting the pre-sintered material and the balls into a ball mill, carrying out ball milling treatment, and respectively adding 1 part of auxiliary material in each ball milling time period until the ball milling treatment of a plurality of ball milling time periods is finished, so as to obtain raw material balls; continuously carrying out ball milling treatment on the raw material balls in the continuous ball milling time period; adjusting the water content in the raw material balls, and forming in a magnetic field to obtain a to-be-sintered material; sintering the to-be-sintered material to obtain a sinter; and grinding and processing the sinter to prepare the permanent magnetic ferrite, and finally obtaining the permanent magnetic ferrite which has the characteristics of high comprehensive magnetic performance, small radial shrinkage, good orientation degree and high grain refinement, so that the shrinkage efficiency of radial shrinkage of the permanent magnetic ferrite magnet is improved.
本发明涉及永磁铁氧体材料技术领域，具体涉及一种改善永磁铁氧体磁体径向收缩的方法；划分多个球磨时间段和持续球磨时间段；根据球磨时间段的段数，将辅助料划分为多等份；将预烧料和球放入球磨机，进行球磨处理，在每个球磨时间段，分别添加1份辅助料，直至完成多个球磨时间段的球磨处理，得到原料球；在持续球磨时间段中继续对原料球进行球磨处理；调整原料球中的含水量，并在磁场中成型，制得待烧料；对待烧料进行烧结，得到烧结物；对烧结物进行打磨加工，制得永磁铁氧体，最后得到永磁铁氧体具有综合磁性能高、径向收缩小、取向度好、晶粒细化高的特点，通过上述方式，实现提高永磁铁氧体磁体径向收缩的收缩效率。
Method for improving radial shrinkage of permanent magnetic ferrite magnet
一种改善永磁铁氧体磁体径向收缩的方法
ZHANG LINGSHENG (author)
2023-09-01
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Low-radial shrinkage ratio permanent magnetic ferrite magnet and preparation method thereof
| European Patent Office | 2015
Method for reducing shrinkage coefficient of permanent magnetic ferrite magnet
| European Patent Office | 2024
Method for regulating and controlling radial shrinkage of permanent magnetic ferrite
| European Patent Office | 2024
| European Patent Office | 2020
PREPARATION METHOD FOR IMPROVING COMPRESSION STRENGTH OF PERMANENT MAGNETIC FERRITE ARC MAGNET
| European Patent Office | 2023