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Ferrite Pump Magnets
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Product Details
Place of Origin: | Shanghai, China | Brand Name: | Strong-Magnets | Model Number: | CM48748 |
Type: | Permanent | Composite: | Ferrite Magnet | Shape: | Other, custom shaped |
Application: | Industrial Magnet |
Product Description
Specifications
Pump MagnetsMANUFACTURED IN FULL COMPLIANCE WITH ISO STANDARDS
General Information
- Ceramic magnets (Ferrite magnets) are sintered permanent magnets composed of Barium or Strontium Ferrite.
- This class of magnets, aside from good resistance to demagnetization, has the popular advantage of low cost.
- Ferrite magnets are very hard and brittle, and require specialized machining techniques. Moreover, they should be machined in an unmagnetized state.
- We are equipped to machine these materials to specifications.
- Anisotropic grades are oriented in the manufacturing direction, and must be magnetized in the direction of orientation.
- Isotropic grades are not oriented and can be magnetized in any direction, although some degree of greater magnetic strength will be found in the pressing dimension, usually the shortest dimension.
- Due to their low cost, Ferrite magnets enjoy a very wide range of applications, from motors and loudspeakers to toys and crafts, and are the most widely used permanent magnets today.
Manufacturing
Pressing and sintering involves pressing very fine ferrite powder in a die, and then sintering this pressed magnet. All fully dense Ferrite magnets are produced this way. Ferrite magnets can be wet pressed or dry pressed. Wet pressing yields better magnetic properties, but poorer physical tolerances. Generally, the powder is dry for grade 1 or 5 materials, and wet for grade 8 and higher materials. Sintering involves subjecting the material to high temperatures to fuse the pressed powder together, thus creating a solid material. Magnets produced through this process usually need to have some finish machining, otherwise surface finishes and tolerances are not acceptable. Some manufacturers extrude instead of press wet powder slurry and then sinter the material. This is sometimes done for arc segment shapes, where the arc cross-section is extruded in long lengths, sintered, and then cut to length.
Injection Molding: Ferrite powder is mixed into a compound and then injection molded in the same way as plastic.
Tooling for this manufacturing process is usually very costly. However, parts produced through this process can have very intricate shapes and tight tolerances. Injection molded ferrite properties are either lower or about the same as grade 1 Ferrite.
Surface Treatments
The corrosion resistance of Ferrite is considered excellent , and no surface treatments are required.
However, Ferrite magnets may have a thin film of fine magnet powder on the surface and for clean, non-contaminated applications, some form of coating may be required.
Magnetizing and Handling
Ferrite magnets require magnetizing fields of about 10 kOe.
They can be magnetized with multiple poles on one or both pole surfaces.
No special handling precautions are required, except that large blocks of Ferrite magnets are powerful, and care should be taken to ensure that they do not snap towards each other.
Temperature Effects
Up to about 840F, changes in magnetization are largely reversible, while changes between 840F and 1800 F are re-magnetizable.
For all Ferrite magnets, the degradation of magnetic properties is essentially linear with temperature.
At 350 F, about 75% of room temperature magnetization is retained, and at 550 F, about 50% is retained.
Common Applications for Ferrite Magnets
Ferrite magnets are widely used in motors, magnetic couplings, for sensing, loudspeakers, holding-magnet systems, crafts, magnetic therapy, novelties, and toys.
Ceramic Magnets Grade | Enterprise standard | QC Y30 | QC Y35H-1 | QC Y35H-2 | QC Y35H-3 | QC Y35H-4H |
MMPA |
| C8 | C8D | C8B |
| |
TDK |
| FB4B |
| FB4D | FB4G | |
Br | Type | 395(3950) | 405(4050) | 400(4000) | 415(4150) | 380(3800) |
min | 385(3850) | 395(3950) | 390(3900) | 405(4050) | 370(3700) | |
Hcb | Type | 200(2500) | 255(3200) | 279(3500) | 235(2950) | 286(3600) |
min | 176(2200) | 251(3150) | 236(3300) | 223(2800) | 270(3400) | |
Hcj | Type | 205(2570) | 263(3300) | 287(3600) | 243(3050) | 342(4300) |
min | 184(2300) | 255(3200) | 275(3450) | 231(2900) | 326(4100) | |
(BH)max | Type | 29.0(3.7) | 31.2(3.9) | 30.4(3.87) | 32.8(4.1) | 27.2(3.4) |
min | 27.5(3.45) | 29.6(3.7) | 28.8(3.6) | 30.2(3.8) | 25.6(3.2) |
Grade | Enterprise standard | QC Y38B | QC Y38H | QC Y40E | QC Y40B | QCY45E | QCY45B |
MMPA |
| C12 | C9 |
|
|
| |
TDK | FB5B | FB5H | FB6E | FB6B | FB9H | FB6N | |
Br | Type | 420(4200) | 405(4050) | 380(3800) | 420(4200) | 430(4300) | 440(4400) |
min | 410(4100) | 395(3950) | 370(3700) | 410(4100) | 420(4200) | 430(4300) | |
Hcb | Type | 263(3300) | 298(3750) | 290(3650) | 302(3800) | 330(4150) | 259(3250) |
min | 251(3150) | 287(3600) | 279(3500) | 290(3650) | 318(4000) | 247(3100) | |
Hcj | Type | 267(3350) | 322(4050) | 398(5000) | 318(4000) | 398(5000) | 263(3300) |
min | 255(3200) | 311(3900) | 382(4800) | 307(3850) | 386(4850) | 251(3150) | |
(BH)max | Type | 33.4(4.2) | 31.1(3.9) | 27.5(3.4) | 33.5(4.2) | 35.0(4.4) | 36.7(4.6) |
min | 31.8(4.0) | 29.5(3.7) | 25.6(3.2) | 32.6(4.0) | 33.5(4.2) | 35.1(4.4) |
FOR QUOTATION, PLEASE WRITE TO US WITH THE FOLLOWING INFORMATION:
- PRODUCT NAME
- GRADE
- SIZE
- SHAPE
- COATING(if any)
- ORDER QUANTITY
FOR QUOTATION, PLEASE WRITE TO US WITH THE FOLLOWING INFORMATION:
- PRODUCT NAME
- GRADE
- SIZE
- SHAPE
- COATING(if any)
- ORDER QUANTITY
Contact Us
- Shanghai Strong Magnets Industrial And Commercial Company Ltd.
- Contact namenorman liu
- Phone0086-021-56812690
- AddressRm. 505-506, Bldg. 12, Lane 858
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