SUNBOW GROUP

 

In material science, amorphous is a solid whose internal microstructure lacking of long-range order that is characteristic of a crystal.

Amorphous is also called metallic glass.

After metal becomes amorphous, a subsequent heat treatment transforms the initially amorphous microstructure into new form in which fine crystalline grains (average grain diameter of 10-40 nm) embedded in an amorphous residual phase. The new form is called nanocrystalline.

SUNBOW’s iron-based amorphous alloy-SWAM is a product series which are universal solutions in many aspects to commonly use ferrite, silicon steel and iron powder materials, such as: power transformer, inductor, reactor, rotor & stator...

SUNBOW’s iron-based nanocrystalline alloy-SWNA is a product series which are excellent solutions to current transformer (high-precision for electricity meter, high-voltage for substation, and zero-sequence for leakage protection), high-frequency power transformer, and common mode choke (CMC) ...

 

 

SUNBOW’s amorphous-SWAM & nanocrystalline-SWNA alloys are based on Fe, Si, B and with further additions of Nb and Cu, and produced by rapid solidification technology.

Composition metals melt in furnace under around 1500℃, and turn into liquid metal which pass through a narrow nozzle, and solidify at a rate of approximately 1million degrees/s. Atoms have no enough time to reach microstructure-crystalline state and stay in amorphous state.

A subsequent heat treatment-annealing at around 500~600℃ transforms the initially amorphous microstructure into nanocrystalline state in which fine crystalline grains (average grain diameter of 10-40 nm) embedded in an amorphous residual phase.

 

Fig.1 Rapid solidification technology to produce thin metal ribbons with amorphous structure.

 

 

• The below characteristics of the iron-based amorphous alloys lead to ultra low core loss.

Thinner thickness —1/10 of CRGO；

Higher electrical resistance — two times higher than CRGO;

Lower coercive force —1/3 of CRGO.

• The magnetic devices made with iron-based amorphous alloy could be operated at higher working induction with excellent anti-saturate ability and smaller size, due to the highest saturation induction among all amorphous alloys.

• 3 tailored products of low core loss, excellent overload tolerance, and high saturation could be provided, according to customer’s different requirements.

 

 

SWAM

RIBBON MATERIAL

 

Composition

Fe: 80%, Si: 9%, B: Balance

 

Main Properties

Low coercivity-2.4 A/m Very high electrical resistivity-1.3 μΩ.m

 

Applications

Power Transformer, High Speed Motor, Welding Machine, Medical Equipment (X-ray, CT, Nano-Knife)…

 

Magnetic Properties (typical values)

Coercivity	2.4	A/m
Curie temperature	410	℃
Saturation flux density	1.56	T
Maximum permeability	200,000	Â
Initial permeability	1,000	Â
Saturation magnetostriction	20~30	ppm

 

Static virgin curve (typical values)

Magnetic field strength	H (A/m)	3	100	500	1000	2000	3000
Induction	B (T)	0.6	0.7	0.75	1.2	1.5	1.56

 

Iron Loss-B=0.1T (typical values)

Thickness	d (mm)	24	24	24	24	24	24
Frequency	f (KHz)	1.5	5.0	10	50	80	100
Loss	p (W/kg)	0.2	0.9	2.3	20	37	50

 

Physical Property

Density	7.2	g/cm3
Electrical resistivity	1.3	μΩ.m
Thermal expansional	4.7	ppm/℃
Crystallization temperature	535	℃

 

Form (soft & bendable)

·Cold-rolled:	Thickness=18~30μm	Width=142/170/213mm
·Slitting-strip:	Thickness=18~30μm	Width=5~80mm

 

Important Note:

Specific magnetic properties could be induced by a heat treatment process.

To achieve optimum properties, a final annealing is indispensable!

 

 

Q: Are you trading company or manufacturer?

A: We are professional manufacturer specialized in the design、development and production of new-type amorphous、nanocrystalline、silicon steel sheets and other magnetic materials and components.

 

Q: What’s your production capacity?

A: The annual production capacity of amorphous&nanocrystalline ribbon is 600 tons;

The annual production capacity of power electronic core is 35 million;

C-type iron core annual production capacity of 240 tons;

The annual production capacity of reactors is 50,000;

 

 

 

 

1. Tell us what you need,you can call 021-63306968

Or send email to :sales@sunbowgroup.com

We supply nanocrystaline Soft Magnetic Material &Amorphous Soft Magnetic Material , please advise your request information:

1. Material Type

2. Application - Current Transformer, CMC, Audio, etc.?

3. Strips Width

4. Srips Thickness-- µm?

5. Potential Quantity -- kg?

 

2. Get solution & quote

We will work on the best solution and provide primarily specification& quote for your review.

 

3. Sample production and mass production

We will start mass production after customer confirmation and validation of samples.

 

 

 

 

 

 

 

 

 

 

 

 

 

http://www.sunbowmagnetic.com/