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How to choose a square strong magnet?
Today, I would like to share with you some knowledge of purchasing a strong square magnet, I hope to buy a friend of ndfeb square magnet help!
As a person engaged in the magnet industry, I have to tell you:
Big square magnet.jpg
Ndfeb block powerful magnet of various shapes and specifications (figure)
magnetism.jpg
1, a square magnet processing cost and directly affect the price mainly by three factors: how much bulk ladder (quotation), specifications and shapes (square roughly regular rectangular, trapezoidal, perforated, sink hole), tolerance size (especially small square magnet, use on the micro precision instruments, very strict tolerance control rules;
If the process cannot be achieved, it needs to be hand-picked and has a high scrap rate.
In short, the smaller the batch, the higher the quotation;
The more complex the shape, the higher the processing cost;
The more strict the tolerance, the higher the processing cost.
2, the characteristics of ndfeb material is hard and brittle, magnetization after the absorption weight is more than 600 times its own weight, easy to absorb and knock.
And you can't use a magnet for magnetic separation.
General case bump against more, cause wear and tear.
3, due to the ndfeb easy corrosion, the general coating requirements are either galvanized or nickel plating.
Zinc plating and nickel plating are both silver white metal, but nickel plating is more polished and corrosion resistant, and the cost will be higher.
Coating thickness tolerance range: Zn: 0.005-0.008mm;
Ni: 0.015 to 0.020
4, sintered ndfeb is based on the brand to divide the temperature requirements.
Brands are: N35 -- N52 (≤80℃),35M -- 50M (≤100℃), 30H -- 48H (≤120℃),30SH -- 45SH (≤140℃), 28UH -- 35UH (≤160℃),28EH -- 35EH (≤180℃).
The higher the brand, the better the performance, but also the higher the price.
5, strong magnetic ndfeb is also divided into two, sintered ndfeb magnet (above) with bond ndfeb.
Bonded ndfeb needs to be moulded, generally used for motor, sensor, intelligent home, because it can be made into multi-pole magnet, more symmetrical in the circle.
Magnets perform better.
General coating is epoxy resin.
As a person engaged in the magnet industry, I have to tell you:
Big square magnet.jpg
Ndfeb block powerful magnet of various shapes and specifications (figure)
magnetism.jpg
1, a square magnet processing cost and directly affect the price mainly by three factors: how much bulk ladder (quotation), specifications and shapes (square roughly regular rectangular, trapezoidal, perforated, sink hole), tolerance size (especially small square magnet, use on the micro precision instruments, very strict tolerance control rules;
If the process cannot be achieved, it needs to be hand-picked and has a high scrap rate.
In short, the smaller the batch, the higher the quotation;
The more complex the shape, the higher the processing cost;
The more strict the tolerance, the higher the processing cost.
2, the characteristics of ndfeb material is hard and brittle, magnetization after the absorption weight is more than 600 times its own weight, easy to absorb and knock.
And you can't use a magnet for magnetic separation.
General case bump against more, cause wear and tear.
3, due to the ndfeb easy corrosion, the general coating requirements are either galvanized or nickel plating.
Zinc plating and nickel plating are both silver white metal, but nickel plating is more polished and corrosion resistant, and the cost will be higher.
Coating thickness tolerance range: Zn: 0.005-0.008mm;
Ni: 0.015 to 0.020
4, sintered ndfeb is based on the brand to divide the temperature requirements.
Brands are: N35 -- N52 (≤80℃),35M -- 50M (≤100℃), 30H -- 48H (≤120℃),30SH -- 45SH (≤140℃), 28UH -- 35UH (≤160℃),28EH -- 35EH (≤180℃).
The higher the brand, the better the performance, but also the higher the price.
5, strong magnetic ndfeb is also divided into two, sintered ndfeb magnet (above) with bond ndfeb.
Bonded ndfeb needs to be moulded, generally used for motor, sensor, intelligent home, because it can be made into multi-pole magnet, more symmetrical in the circle.
Magnets perform better.
General coating is epoxy resin.
