磁石の製造工程

磁石の焼結工程

初め:溶融
材料は中周波にさらされ、誘導炉で溶解されます。.

2番:ジェットミリング
様々な工程を経て, インゴットは数ミクロンの粒子に粉砕されます. 酸化を防ぐために, 小さな粒子は窒素によって保護されています.

三番目:プレス中
磁性粒子を治具に入れ、磁場を加えながら磁石を押し固めます。. このプロセスを通じて, 磁気異方性を実現します.

4番目:焼結
磁性粒子を配置 プレスされたインゴットを焼結炉で熱処理. 焼結前のインゴットの密度は約 50% 真密度であるが焼結後, 真の密度は 100%. Through this process the ingots’ measurement shrink by about 70%-80% and their volume is reduced by about 50%. Aging the magnets after sintering adjusts the properties of the metals.n a jig and a magnetic field is applied while the magnets are pressed into shape. このプロセスを通じて, 磁気異方性を実現します.

Fifth:Inspection
Basic magnetic properties are set after the sintering and aging processes are complete. Key measurements including remnant flux density, coercivity, and maximum energy product are recorded.Only those magnets that pass the inspection are sent to subsequent processes including machining and assembly

Sixth:Cutting

Seventh:Machining
Due to shrinkage from the sintering process, required measurements are achieved by grinding the magnets withabrasives. Diamond abrasives are used for thisprocess because the magnet is very hard.
Eighth:メッキ
To best suit the environment in which they will be used, the magnets are subject to various surface treatments. Nd-Fe-B magnets are generally susceptible to rust so they are surface treated with nickel or paint.

Ninth:Size testing
Magnets that have been machined and plated are measured and visually inspected.To ensure the high precision,we have totest the size in order to control the tolerance.So far our normal tolerance reaches 0.03

Tenth:磁化
Magnets that have been machined and plated are measured and visually inspected. 加えて, magnetic properties, corrosion and maximum energy are tested to specifications.
 

Eleventh:Packing
Magnets that have passed product testing are packaged and shipped. Flux leakage shields are utilized for air shipment when required. Magnet products are shipped to worldwide customer manufacturing locations