High-temperature magnets, cast Alnico, sintered Alnico
Alnico magnets are made by casting with aluminum, nickel, and cobalt as the main components, and they have the best temperature characteristics among magnets. Although they have the disadvantage of being prone to demagnetization when used alone, they excel in mechanical strength.
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basic information
1. Alnico magnets, which have a long history, are metal magnets with relatively high Br. They are primarily composed of aluminum, nickel, cobalt, and iron, and are manufactured through casting or sintering. Most materials have a Br that exceeds 10,000 (G). 2. Resistant to temperature changes. The temperature coefficient of Br is -0.02%/℃, which is the smallest, making it a magnet with minimal reversible temperature changes. The temperature coefficient of Hcj is nearly zero up to around 600℃, allowing for high-temperature use. 3. Prone to demagnetization from external magnetic fields and mechanical shocks. Due to the small value of Hcj, caution is needed as it is easily demagnetized by external reverse magnetic fields. Mechanical shocks can easily lower Hcj, so care must be taken with mechanical vibrations and impacts. 4. There are limitations on shape. Because of the small value of Hcj, it is necessary to have a larger height dimension in the magnetization direction. Depending on the shape, there may be restrictions due to casting molds or dies, but dimensional accuracy can be finished to a high level through polishing.
Price range
P1
Delivery Time
P4
※Sintered Alnico takes about 25 days, while cast Alnico magnets take about 45 to 60 days.
Applications/Examples of results
The stability against temperature is exceptionally good, and there is a strong demand, especially for measuring instruments. For example, this magnet is used in the electric meters found in many households.
Detailed information
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Alnico Magnet Bar Type A circular type of alnico magnet made from aluminum, nickel, and cobalt, produced through casting or sintering. 【Features】 - Although it has the disadvantage of being prone to demagnetization, it is strong against high temperatures (Curie point 850°C) and has excellent mechanical strength, making it less likely to break. 【Applications】 - It has a strong popularity in various meters and the communications field, as well as in devices such as energy meters and security equipment.
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Alnico Magnet Ring Type 【Features】 - Alnico magnets are made by casting, which gives them excellent properties against temperature changes. They are often used in applications where stability and precision are required, but they have the disadvantage of being prone to demagnetization.
Company information
We are a magnet manufacturer located in Hangzhou, China, with our production facility in the Hangzhou area, producing and selling various types of magnet-related products. These include neodymium magnets, samarium-cobalt magnets, alnico magnets, ferrite magnets, band magnets, iron-chromium-cobalt, plastic magnets, and rubber magnet sheets. Currently, our product composition is as follows: 32.28% are motor products, 35.25% are assembly design products, 20.14% are neodymium magnets, and the rest are samarium-cobalt magnets, alnico magnets, ferrite magnets, and band magnets. We have 180 employees, and our factory covers an area of 25,400 square meters. All staff at Hangzhou Vector Magnetic Iron Co., Ltd. have at least five years of experience in the magnet field, and everyone in the sales department is capable of communicating in English, possessing extensive knowledge and experience in magnets. We have three staff members who can communicate in Japanese, with over ten years of sales experience in the Japanese market and with Japanese customers. Furthermore, our company has established a meticulous system from quotation to order, production, quality control, and product delivery. Quality assurance is of utmost importance, and we believe that a company can only exist by satisfying customer demands. Our company prioritizes the interests of our customers to the greatest extent possible.