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Our Advantages:
材料: Use original high-quality rare earth materials, Never use waste, recycled material
品質: In strict accordance with the process and quality control. Pay much attention to product details, each magnet will be inspected carefully.
Competitive Price: Direct manufacture of magnets, direct profit to customers Certificates: RoHS compliance, ISO, Reach Standard, SGS , CE Sample Charges: Free samples are available for common color and size, Not including the express cost. Customized samples will charge a small amount.
Samples Lead Time: Around 3-5 日々
Production time: Around 7-15 days for regular shape magnets after samples confirmed.
Professional Service: One-stop solution service from Design to shipment.
What is Neodymium Magnet:
ネオジム磁石, also known as NdFeB, NIB or Neo magnet, the most widely used type of rare-earth magnet, is a permanent magnet made from an alloy of neodymium, iron and boron to form the Nd2Fe14B tetragonal crystalline structure.Developed in 1982 by General Motors andSumitomo Special Metals, neodymium magnets are the strongest type of permanent magnet commercially available.They have replaced other types of magnets in the many applications in modern products that require strong permanent magnets with smaller size, such as motors incordless tools, hard disk drives and magnetic fasteners.
Why do magnets need to be plated?
Magnets can only be electro-plated before magnetization. if the plating is compromised after magnetization via abrasion or deliberate machining they cannot be re-plated. Some coatings such as plastic may be done after magnetization, If the process does not exceed the magnets maximum operating temperature.
Oxidization (rust):
NdFeB magnets will oxidize(rust) if left exposed. When a plating wears down or cracks, the exposed area will oxidize. An oxidized area will not result in complete degradation of the magnet, only the oxidized area will lose its strength. However the magnet will lose some structural integrity and become more susceptible to breakage.
Durability:
Depending on shape, permanent magnet substrate is brittle. A multilayered metal plating like nickel or zinc improves the magnets resistance to chipping and wear, particularly around corners.
Harsh Environments:
Plating vary in their tolerance of different harsh chemicals and abrasion. Salt and humidity in regions near the ocean are commonly overlooked when selecting a plating. Be sure to consider the magnets environment when selecting a plating. The most common type of plating for neodymium magnets Nickel (ニッケル - 銅 - ニッケル) Intended for indoor use. It has proven to be very resilient when subjected to normal wear and tear. However it will corrode outdoors in prolonged exposure to salt water, salty air, or harsh chemicals.
Ordinary Coatings & Plating on Our Neodymium Magnets:
ニッケル (ニッケル - 銅 - ニッケル) :
The coating thickness will be around 10-20 Microns. A very durable multi-layers combination of nickel, 銅, ニッケル. The most common plating. Nickle plating is with good resistance to Abrasion&wear, Humidity, while Bad to Salty air , water & salty Water.
Zinc Plating (亜鉛):
The coating thickness will be around 8-10 Microns.2nd most common plating, Zinc is a standalone plating with only one layer. It is a self- sacrificing coating, meaning when the material corrodes the outside turns white creating a durable layer of protection. Zinc plating is with good resistance to water, salty air ( Near Ocean), while bad to salty water.
エポキシ (Ni-Cu-Be):
The coating thickness will be around 15-25 Microns.Epoxy plating is multilayered in Nickel, Copper, エポキシ. Great for outdoor applications. However it is not very abrasion resistant and prone to scratching.
ゴールド (Ni-Cu-Au):
The coating thickness will be 10-20 Microns. Well known for its corrosion resistance. Layered in Nickel, Copper & Gold on top. Works very well in water applications.The gold layer is very thin and adds only a few cents per magnet.
Plastic:
The coating thickness will be 250-500 Microns. Plastic is the most corrosion resistant. However its is thicker than other plating. A mold is required to create the plastic shell.
リン酸塩:
Phosphate is a temporary coating that will last only a few months. It is normally used when the magnet is going to be over-molded or encased in a plastic part that will act as the final protective layer.
About Magnetization Directions:
ディスクとシリンダーの磁石は、軸方向または直径方向に磁化することができます.
ブロック磁石は3次元で定義されます: 長さ, 幅と厚さ. 一貫している, 磁化の軸に沿って厚み寸法を定義します. 厚さは通常最小寸法です, しかしいつもではない! 長さ方向または幅方向に磁化されたブロック磁石を提供できるかどうかを尋ねられる場合があります. はい, 私たちは長い間持っています “バー” マグネット, 磁化が最も長い次元にある場所. これはまだ厚さとして定義されています, にもかかわらず.
Ring magnets can be axially or diametrically magnetized.Spheres can only be axially magnetized. 可能な方向は1つだけです.
マウントマグネット,丸型取り付けマグネットは、軸方向に磁化されたディスクまたはリングマグネットがスチールカップ内にセットされた状態で組み立てられます。. 磁石の北極は外側を向いています.
Our Rectangular Mounting Magnets are constructed in a similar fashion.Arc Segment magnets can be magnetized in one of four directions.
Grades and Working Temperature:
Neodymium magnets are graded according to their maximum energy product, which relates to the magnetic flux output per unit volume. Higher values indicate stronger magnets and range from N35 up to N52. Letters following the grade indicate maximum operating temperatures (often the Curie temperature), which range from M (up to 100 °C) to AH (230 °C).
N35-N52: 80 °C N33M-N50M:100 °C
N30H-N48H:120 °C N30SH-N42SH:150 °C
N45SH: 180 °C N30UH-N38UH: 180 °C
N40UH: 200 °C N28EH-N38EH: 200 °C
N28AH-N33AH: 230 °C
Dimension and Tolerance of Our Neodymium Magnets
ブロックマグネット, Bar Magnets, キューブマグネット,Square Magnets
ディスクマグネット, シリンダーマグネット, Bar Magnets
リング磁石, 皿マグネット
Arc Magnets, Segment Magnets
