Application Case
The magnets used in professional loudspeakers are mainly neodymium magnets and ferrite.They exist in the shape of rings or disks of various sizes. Neodymium magnets?is often used in high - and medium-grade products.?Its sound quality, sound elasticity, sound performance, sound field positioning accuracy.With excellent performance, small and light?neodymium magnets?began to replace large and?heavy ferrite gradually.
Technical Requirement
1、Characteristic :Br ≥ 13.3KGs，Hcj ≥ 17KOe
2、Coating Sandards：
Coating:Zinc
High temperature ageing: 250'C, no blister , no discoloring.
Sum-10um
Thickness : Sum -10um
Salt spraytest: 35C, 5%NaCl, 48hours
Adhesive force between the coating layer and magnet:
drop test:18m. S0times. coating can't peel off.
Flux loss: 100C "2hours , the rate af fu osss8%
1、Charateristics：Br：12.0-13.4KGs，Hcj：14-17KOe
2、Coating Standards ：
Coating : Zine
High temperture ageing: 250C, no biste
no discoloring.
Thickness : Sum 10um
Salt spray est: 35C .5%NaCG, 48hours
Adhesive force between the coating layer and magnet:
drop test; 18m. Sotimes. coating can't peel off，
3、Flux oss:80- I00C " 2hous , the rote of flux 0sss8%
4、Tolerance：+/-0.05mm
