each group of magnetic material's absorbability is fixed.while the excluding volume could be changed according to the conveyoring speed and the distance between each magnetic material's group magnetizer's broken pieces scraps and flour whose length is shorter than 50mm are mainly conveyed they are widely used in such cutting and chopping machine as numerical control machine combined machine production line process center etc to conveyor magnetic scraps they could be used combined with other form of scraps excluding machine strainer so as to obtain thehost machine's requierment if there are colling oil the conveyring result is not satisfying the outline of each part and cooling cast could be designed and made according to the cutting and chopping machine's difference