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How to choose suits own square powerful magnets?

by:Newland     2020-05-01
First we find magnets to confirm the specifications of the magnet, the tolerance size, coating, magnetization, performance, batch, the above list we can clearly tell supplier, we need to what kind of magnet, as to how we confirm the list of requirements, star and to answer questions: 1, square magnet processing cost and directly affect the price mainly by three factors: how many (batch Ladder quotation) , specifications and shapes ( Square roughly regular rectangle, trapezoidal, perforated, sink hole) , the size of the tolerance ( Especially the small square magnet, use on the micro precision instruments, very strict tolerance control rules; If process cannot achieve, will need to artificial selection, and has the very high scrap rate) 。 In general the smaller the bulk, the higher the price; The more complex shape, the manufacturing cost is higher; Tolerance is strict, the higher the processing cost. 2, the characteristics of ndfeb material is hard and brittle, after magnetizing of weight is more than 600 times their own weight, absorbs knock against. And can't use the magnet for magnetic separation. Generally feel more, lead to wear and tear. 3, because of ndfeb is easy to corrode, generally are either galvanized or nickel plating coating requirements. Galvanized iron with plating NieDou is the silver-white metal, but more shiny nickel plating with corrosion resistant, at the same time the cost will be higher. Plating thickness tolerance range: zinc: 0. 005 - 0. 008mm; 倪:0。 015 - 0. 020 4, sintered ndfeb magnet is divided according to the grades of temperature requirements. Brands are: N35 - N52( ≤80℃) N30M——, N48M ( ≤100℃) N33H - N48H( ≤120℃) ,N33SH— N48SH ( ≤150℃) N25UH - N38UH ( ≤180℃) N30EH——, N35EH ( ≤200℃) N28AH——, N30AH( ≤220℃) ( On the brand, the more, the higher the performance, but also the higher the price. Specific please consulting and customer service, we will reply you. )
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