Injection Molded (Molding) Magnets /Plastiform Magnets from China manufacturer

Injection Molded (Molding) Magnets /Plastiform Magnets

Price:	0.1~10.0 USD
Payment Terms:	T/T,L/C
Place of Origin:	Zhejiang, China (Mainland)


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Product Detail

Model No.: Plastic magnet

Production Capacity: 1000000pcs/month

Delivery Date: 15-30days

Shape: Others

Composite: Plastic Magnet

Means of Transport: Ocean,Air

Packing: carton

Application: Industrial Magnet

Type: Permanent

Brand Name: Canphia Magnet

Injection Molded (Molding) Magnets /Plastiform Magnets

Injection Molded Magnets

One of the more important developments in magnetic materials, polymer bonded magnets, have opened a new world of application opportunities. The processing temperatures employed to blend and mold the material mixture is low enough to allow many different magnet powders to be used alone or in combination in the polymer binder to achieve an unprecedented range of properties.

Another benefit of the injection molding process is that magnet material can be directly molded into, onto, or against other assembly components eliminating subsequent assembly steps. This is called insert injection molding.

Injection molded magnets can be of very simple shapes or very complex. All or only part of the device may be magnetized. It is sometimes cost advantageous to make an entire part out of the magnet material and just magnetize the portion requiring magnetic output.

MATERIALS

Magnetic powders include ferrite, neodymium-iron-boron (NdFeB), and samarium cobalt (SmCo). There are several alloy compositions available of ferrite and NdFeB providing many different magnetic properties.
Polymer binders utilized by the Plastiform Division include nylons 6 and 12 and PPS (polyphenylene sulfide). Binder evaluations are a continuous activity in the Development Laboratory, in an effort to improve physical strength, maximum recommended use temperature, improved corrosion resistance for the rare earth magnetic materials, improved dimensional stability in the presence of water and solvents, and greater ease of processing.

TEMPERATURE CHARACTERISTICS

Maximum use temperature is a function of both the magnetic alloy powder and of the binder. For example, ferrite powders in nylon 6 or PPS have tested satisfactorily at 180°C. On the other hand, nylon 12 melts above 170°C and is not recommended for use above 150°C. Magnetic material such as the highest energy NdFeB grade, with intrinsic coercivity of 9,500 Oersteds (760 kA/m), suffers significant irreversible magnetic loss above 120°C, regardless of which binder is used. Maximum use temperatures are listed on each product's specification sheet.

TOLERANCES

An important characteristic of injection molded magnets is that they conform dimensionally to the mold cavity which is precisely machined, the result being close tolerances in the finished product. What little dimensional variability there is results from shrinkage of the polymer during cooling. This depends upon part thickness and shape. Typical tolerances are +/-0.003 in/in. Closer tolerances on critical dimensions can be negotiated.

Product Availibility Guide

Part         Magnetic                                                         Max.     Max.   Max.     Max.     Max.
No.         Material                Polymer        Density     Br         Hc     Hci     BHmax  Temp.
                                                                            g/cc     Gauss      Oe       Oe       MGOe      ^oC

2039     SrFerrite                Nylon 6                    3.80     3,070    2,570  3,070   2.35       160

2040   SrFerrite                Nylon 12                 3.75     3,060  2,540  3,190     2.34       150

2046     SrFerrite                Nylon 6                      3.58     2,890    2,550  3,150     2.11       160

2048     SrFerrite                Nylon 6                      3.55     2,880    2,510 3,210     1.99       160

2049     SrFerrite                Nylon 12                    3.21     2,460  2,340   3,600      1.52       150

2051     SrFerrite                Nylon 6                      3.76     3,130 2,590  3,140      2.41      160

2052     SrFerrite                PPS                           3.65      2,880    2,530 3,320     2.05       180

2070     SrFerrite                Nylon 12                    3.63      2,940   2,520  3,190     2.17       150

2071     SrFerrite                Nylon 12                    3.53      2,810 2,680  4,020     2.05      150

2101     SmCo                 Nylon 12                     5.60     6,880   6,000   11,60011.28       150

2103   SmCo                  Nylon 6                       5.50     6,380   6,000   28,000    9.72       160

2202     NdFeB                Polyamide                 4.85     5,8004,320   10,000     7.15       125

2204     NdFeB                Nylon 12                     5.20     5,3904,920   13,200     5.94       150

2206     NdFeB                 PPS                             4.40     4,4004,000 10,500     4.26      150

2212     NdFeB                 Nylon 12                     4.90     5,7204,320     9,000     6.63      150

2213     NdFeB                 Nylon 12                   5.20     5,8905,000   10,000     7.44      150

2214     NdFeB                   Nylon 12/Polyamide    4.65     4,8004,200     9,840     5.56      125

2216   NdFeB                 Nylon 12                   5.16     6,1104,800   9,000   6.63      125

2217     NdFeB                 PPS                             4.90    4,8204,800    18,000     5.17      180

2218   NdFeB                Nylon 12                     5.20    5,8904,800    9,600     7.44      150

2225   NdFeB                   Special plastic            5.70    6,8005,800    10,200     9.40      150

2409     SrFerrite/NdFeB   Nylon 12/Polyamide   4.15    4,6202,880      4,320     3.43      125

2413   SrFerrite/NdFeB   Nylon 12/Polyamide   4.72    5,2002,640      4,400     4.77      125

2414     SrFerrite/NdFeB   Nylon 12                    4.85    5,3004,100      9,100     5.95      150

2415   SrFerrite/NdFeB   Nylon 12                    4.00    3,8702,830      4,220     3.03      150

2416   SrFerrite/NdFeB     Nylon 12                    4.97    5,4004,310      9,400   6.31      150

2417     SrFerrite/NdFeB   Nylon 6                      3.85    2,200 1,740       2,640     1.01      150

2521     SrFerrite                Nylon 12                    3.65    2,8102,680       4,020     2.05      150

2534   SrFerrite              Nylon 6                      3.53    2,7302,250       3,300   1.89      150

2535   SrFerrite                Nylon12/Polyamide     3.65    2,8402,650      4,000   1.96      125

2560   SrFerrite                Polyamide                  3.65    2,8402,650       4,000     1.96      125