High-temperature magnet, cast alnico, sintered alnico
Alnico magnets are made by casting 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%/°C, making it a magnet with minimal reversible temperature change. The temperature coefficient of Hcj is nearly zero up to around 600°C, 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 can easily demagnetize under 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, particularly 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 drawback of being prone to demagnetization, it is strong against high temperatures (Curie point 850°C) and has excellent mechanical strength, making it resistant to breakage. 【Applications】 - It has a strong popularity in various meters and communication fields, as well as in devices such as cumulative power meters and security equipment.
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Alnico Magnet Ring Type 【Features】 - Alnico magnets are made by casting, which gives them excellent temperature characteristics and makes them widely used in applications where stability of precision is required, but they have the disadvantage of being prone to demagnetization.
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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 consist of 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 worked in the magnet field for at least five years, and everyone in the sales department is capable of communicating in English, with extensive knowledge and experience in magnets. We have three staff members who can communicate in Japanese, all with over ten years of sales experience in the Japanese market and with Japanese customers. Furthermore, we have established a meticulous system that covers everything from quotations to orders, production, quality control, and product delivery. Quality assurance is our top priority, and we believe that a company can only exist by satisfying customer demands. We are committed to maximizing our customers' benefits.