Bonded Samarium Cobalt Magnets (Injection SmCo)

Bonded samarium cobalt magnet is composed of magnetic powder and plastic medium. Unlike traditional magnetic process, bonded SmCo magnets  can be manufactured into various kinds of shapes, via mixing and heating in injection molding machine and then pouring into molds, instead of compressing molding in presser and then sintering and processing.

Currently, plastic medium mainly include P6, P12 and PPS. Customer can choose plastic medium according to performance, cost and using environment. We will also recommend suitable material as per customer’s requirements so that products will have good price/ quality ration and using effect.

Not only do bonded SmCo permanent magnets  have different kinds of shapes and specifications, but they have powerful resistance to corrosion and rust and high temperature stability. Therefore, commonly, bonded samarium cobalt magnets do not need coating.

Because bonded smco magnets are manufactured by mixing magnetic powder and binders, including epoxy resins or plastic, instead of sintering, bonded smco magnets are less fragile and brittle than common samarium cobalt permanent magnets. However, bonded magnets will have less powerful magnetic strength as well.

Features:
1.    Bonded samarium cobalt rare earth permanent magnets are convenient for manufacturing precise magnets in special or complicated shapes.
2.    The magnets are not easy to break or damage in assembly with other components.
3.    They can be molded with inserts in one-time molding.
 
Applications:
Speed sensor
Camera
Printer
Spindle motor
Magnetic bearings
Household and electrical appliance
Etc.
Below is the table of bonded samarium cobalt magnet grade for reference.

	剩磁	矫顽力	内禀矫顽力	最大磁能积	可逆温度系数
材料牌号	Br	Hcb	Hcj	(BH)max	α（ B r ）
Grade	mT	KA/m	KA/m	KJ/m3	%/ ℃
	Gs	KOe	KOe	MGOe
SCZ-4T	380-420	200-280	640-1030	28-36	-0.03
	3.8-4.2	2.5-3.5	8.0-13.0	3.5-4.5
SCZ-5T	410-540	265-360	640-1200	36-44	-0.03
	4.1-5.4	3.3-4.5	8.0-15.0	4.5-5.5
SCZ-9	610-660	415-480	640-1200	68-76	-0.03
	6.1-6.6	5.2-6.0	9.0-15.0	8.5-9.5
SCZ-11	640-720	430-510	640-1200	76-88	-0.03
	6.4-7.2	5.4-6.4.4	8.0-15.0	9.5-11.0

Note: ① T for isotropic materials;
② each material grades can be according to customer requirements of different types of polymer plastics, such as PA6, PA12,PPS corresponding maximum operating temperature of the product: PA6: 150 ° C; PA12: 120 ° C;PPS: 180 ° C.