2019年8月7日星期三

What are the differences between neodymium magnets that have been demagnetized and magnets that haven’t been demagnetized?

Many magnet manufacturers will often encounter such situation: the demagnetization of strong neodymium magnets. Why the magnets will need demagnetization? There are lots of reasons. For example, magnet salesmen didn’t understand the actual requirement of customers, customers need the un-magnetized magnets, but salesmen sent the magnetized magnets to customers. The electroplating factory plated the magnets with Zinc, but customers couldn’t accept it because the magnets should have required nickel plated. We will need to demagnetized the magnets if plate the magnets again. There are many other situations. So what are the differences between magnets that have been demagnetized and magnets that haven’t been demagnetized? Many people will care about this matter.
neodymium ring magnets with Zn coating

The magnetic molecular structure will have obvious changes occur after demagnetizing the magnets, which will weaken the magnetism of magnets, compared with the ordinary magnets. And after repeated magnetization, the magnetism of magnets will become weaker and weaker. So when we use the magnets that have been demagnetized cannot be magnetized repeatedly, otherwise the magnetism of these magnets cannot meet the use requirement.
neodymium disc magnets with NiCuNi coatingneodymium arc magnet with NiCuNi coating

The original neodymium magnets which have not undergone high temperature demagnetization, the magnetic structure molecules have not changed, and the magnetic properties are relatively stable. But those magnets need to avoid high temperature, because high temperature will change the molecular structure of the magnet.

To sum up, do you know the differences between magnets that have been demagnetized and original magnets? If you still don’t understand or have any questions, please contact and consult with the manufacturer China Rare Earth Magnet Limited.

Tags: neodymium magnets, magnet manufacturer

2018年12月3日星期一

Custom AlNiCo Magnets Manufacturer 20181204

Alnico8 14x4x6mm rectangular magnets manufacturer
Size:14x4x6mm
Magnetized Or not: Magnetized
Coating: Ni
Magnetization direction: Through 6mm
Grade: Alnico8
Qty (pcs): 100 pcs
Unit Price: USD***

Tags: alnico magnets, magnet manufacturer

Custom SmCo Magnets Manufacturer 20181204

Sm2Co17 D20x10mm disc magnets manufacturer
Size: D20x10mm (wih a 5.2mm countersink hole)
Magnetized Or not: Magnetized
Coating: None
Magnetization direction: Through thickness
Grade: Sm2Co17(pull force 7.1kg)
Unit Price: USD***

YXG28 2"x2"x0.125" / 1.75"x1.75"x0.125" rectangular magnets manufacturer
Size:
2"x2"x0.125"
1.75"x1.75"x0.125"
Magnetized Or not: Magnetized
Coating: None
Magnetization direction: Through 0.125"
Grade: YXG28
Qty (pcs): 100 pcs
Unit Price: USD***

Tags: SmCo magnets, magnet manufacturer

2018年11月27日星期二

Neodymium Cylindrical Magnets Manufacturer 20181128

N35 D19x28.2mm neodymium cylindrical magnets manufacturer
Size: D19x28.2mm
Magnetized Or not: Magnetized
Coating: Ni-Cu-Ni
Magnetization direction: Through 28.2mm
Grade: N35
Qty (pcs): 1000 pcs
Unit Price: USD***

N40UH D4x6mm neodymium cylindrical magnets manufacturer
Size: D4x6mm
Magnetized Or not: Magnetized
Coating: Ni-Cu-Ni
Magnetization direction: Through thickness 6mm With black dot on N Pole
Grade: N40UH
Qty (pcs): 5000 / 10000 pcs
Unit Price: USD***

N52 D2"x2" / D1.55"x2" neodymium cylindrical magnets magnets manufacturer
Size:
D2"x2"
D1.55"x2"
Magnetized Or not: Magnetized
Coating: Ni-Cu-Ni
Magnetization direction: Through 2"
Grade: N52
Unit Price: USD***

Tags: magnet manufacturer, neodymium magnets

2018年10月23日星期二

neodymium ring magnets manufacturer 20181024

N35 D27.9xd21.1x19.9mm neodymium ring magnets manufacturer
Size: D27.9xd21.1x19.9mm
Magnetized Or not: Magnetized
Coating: Black epoxy
Magnetization direction: Through axle
Grade: N35
Qty (pcs): 200 pcs
Unit Price: USD***

N52 D120xd40x30mm / D120xd40x40mm / D120xd40x50mm neodymium ring magnet manufacturer
Size:
D120xd40x30mm
D120xd40x40mm
D120xd40x50mm
Magnetized Or not: Magnetized
Coating: Ni-Cu-Ni
Magnetization direction: Through thickness
Grade: N52
Unit Price: USD***

N48 D18.8xd15x1.9mm / D24xd20.2x1.9mm neodymium ring magnets manufacturer
Size:
D18.8(-0.02/-0.05)xd15(+0.05/0)x1.9(±0.03)mm
D24(-0.02/-0.05)xd20.2(+0.05/0)x1.9(±0.03)mm
Magnetized Or not: Magnetized
Coating: Ni
Magnetization direction: Through axle
Grade: N48

N50 neodymium ring magnets D2.4xd1x7.35mm
Size: D2.4xd1x7.35mm
Magnetized Or not: Magnetized
Coating: Ni-Cu-Ni
Magnetization direction: Through diameter
Grade: N50
Qty (pcs): 1000 pcs
Unit Price: USD***

N50M D1xd0.3x1mm neodymium ring magnet manufacturer
Size: D1xd0.3x1mm
Magnetized or not: Magnetized
Coating: Ni-Cu-Ni
Magnetization direction: Through diameter
Grade: N50M
Unit Price: USD***

Tags: neodymium ring magnets, magnet manufacturer

2018年9月19日星期三

A4 Color Flexible Magnetic Sheet Manufacturer 20180920

Product Introduction:
A4 Color Flexible Magnets

Flexible Magnets for Supermarket, Teaching Whiteboard and Shelf, Bar for Screened Window
Component: soft rubber magnet, color surface (EU EN71 Standard certificated)
Color: red, yellow, green, black, blue and white
Size: 297×210mm*0.8mm (Customized size is acceptable.)
Use: this product can be cut into any shape and put it in any ironwork. It can be used for preschool teaching aid, automobile decoration, signboard, label for commodity classification. Also, it can be drawn in refrigerator, teaching whiteboard and any other metalwork.
Manufacturer: China Rare Earth Magnet Limited

2018年8月5日星期日

Custom Neodymium Magnets Manufacturer 20180806

N52 Custom Neodymium Magnets Manufacturer
Size: as per picture and drawing
custom neodymium magnets manufacturer

neodymium magnets manufacturer

custom neodymium magnets
Magnetized or not: Magnetized
Coating: Ni-Cu-Ni
Magnetization direction: Through *mm
Grade: N52
Qty (pcs): 15000 pcs
Unit Price: USD***

N48 neodymium customized countersunk magnets manufacturer
Size:  D22xd*xd*x*mmx90°
custom neodymium countersunk magnet
Magnetized or not: Magnetized
Coating: Ni-Cu-Ni
Magnetization direction: Through axle
Grade: N48
Qty (pcs): 10000 (N-S 5000pcs S-N 5000pcs)
Unit Price: USD***

N42 neodymium customized magnets manufacturer
Size: as per drawing
neodymium customized magnets

Magnetized or not: Magnetized
Coating: Ni-Cu-Ni
Magnetization direction: Through *mm
Grade: N42
Qty (pcs): 50,5000
Unit Price: USD***

N52 Custom Neodymium Magnet Manufacturer
Size: as per drawing
Custom Neodymium Magnet
Magnetized or not: Magnetized
Coating: Ni-Cu-Ni
Magnetization direction: Through axial
Grade: N52

N28EH Neodymium Magnets in Special Shape
customized magnet
Size: as per drawing
Grade: N28EH
Magnetized or not: Magnetized
Magnetization direction: Through Thickness
Magnetic South Marked with Colored Dot
Coating: Ni-Cu-Ni/Au

---Posted by Custom Neodymium Permanent Magnets Manufacturer China Rare Earth Magnet Limited on 20180806

Tags: custom neodymium magnets, magnet manufacturer