Alnico magnet is an alloy made of aluminum, nickel, cobalt, copper, iron and other materials. According to the different processing technology, it is divided into two kinds: cast aluminum nickel cobalt and sintered aluminum nickel cobalt.
Alnico permanent magnets are precipitation hardening hydromagnets made by casting or powder metallurgy, mainly including Fe Ni Al and Fe Ni Al Co alloy systems.

Production process of aluminum nickel cobalt magnet
Casting: batching - smelting - casting - heat treatment - performance testing - machining - Inspection - packaging.
Sintering: batching - Milling - pressing - sintering - heat treatment - performance testing - machining - Inspection - packaging.

Characteristics of alnico magnet
Alnico permanent magnets produce coercivity by the shape anisotropy of precipitates.

Fe Ni Al Alloys
The typical compositions of Fe Ni Al alloys are: fe-25.5ni-13al-3cu, fe-21ni-10al-12co-6cu. Because the alloy contains a small amount of cobalt or no cobalt, the magnetic field heat treatment is invalid, and the magnet is magnetically isotropic with low performance.

Fe Ni Al Co alloy
The typical components of Fe Ni Al Co alloy system are fe-14ni-8a1-24co-3cu (generally known as alnico5) and fe-15ni-7al-34co-5ti-3cu (generally known as Alnico8). Their cobalt content is high, the magnetic field treatment effect is obvious, and the magnet is magnetically anisotropic with high performance. For example, the performance of columnar magnets made by directional solidification will be greatly improved

Application of alnico magnet
Al Ni Co alloys are brittle and hard, and are mainly produced by casting. In addition, Al Ni Co permanent magnets can also be sintered by powder metallurgy, but their properties are slightly lower. AlNiCo magnets have good temperature stability and aging stability, and are suitable for making instruments, motors, electroacoustic devices, magnetic machinery, etc.

Aluminum nickel cobalt magnet material
In addition to iron, alnico permanent magnets are mainly mixed with permanent magnet materials composed of aluminum, nickel and cobalt elements. From the 1930s to 1960s, it played an important role in the application of permanent magnet materials. However, since the 1970s, permanent ferrite has developed rapidly. At the same time, the magnetic properties of rare earth cobalt permanent magnet material have exceeded that of aluminum nickel cobalt material. The properties of Machinable plastic iron chromium cobalt permanent magnet can be compared with it, so its dosage decreases. However, its demagnetization caused by temperature change is smaller than that of other materials, so it is still commonly used in instruments.

Our advantages
1. Rich experience: we are a manufacturer of AlNiCo magnets engaged in permanent magnet materials for many years, and can provide you with one-stop customized solutions for powerful magnets.
2. Quality assurance: many models and specifications; After strict production process, complete testing, analysis, detection and test are equipped to ensure that customer needs are met.
3. Fast delivery: it has a number of production equipment to meet the production requirements of customers for permanent magnet materials; It can ensure product quality, deliver goods on schedule, and provide customized processing services.
4. After sales considerate: professional after-sales team and logistics distribution system provide you with one-to-one considerate service for processing and delivery.

We focus on the customized production and sales of AlNiCo magnets. We can customize alnico permanent magnets with any specification and performance. If you need quotation and proofing of AlNiCo magnets, you are welcome to send us pictures and samples.