Advantages of nano ferroferric oxide black magnetic powder:

1. Nano Iron oxide black magnetic powder has the characteristics of high permeability, low coercivity and low remanence;

2. Nano Fe3O4 black magnetic powder has good dispersibility, is not easy to agglomerate, and has strong magnetism;

3. One-dimensional nano ferroferric oxide black magnetic powder has good magnetic permeability and good mobility;

4. The mixing of nano-materials of different dimensions can improve the performance of magnetic particle detection technology;

5. Nano-ferroferric oxide black magnetic powder can be combined with organic materials to modify nano-magnetic materials;

6. Nano-ferroferric oxide black magnetic powder can achieve the same particle size and meet the needs of special testing;

7. The crack detection rate of nano ferroferric oxide black magnetic powder is high, and it has a good performance in the detection of small cracks;

Nano Fe3O4 magnetic powder has been modified to have high permeability, low coercivity and low remanence magnetic properties, and has important application value in the field of non-destructive testing.

Its main application areas are as follows:

(1) High-end precision equipment testing Nano ferroferric oxide magnetic powder has a wide range of applications in aerospace, high-end precision manufacturing, and special equipment industries. The zero-dimensional, one-dimensional, two-dimensional, and three-dimensional nano-material mixtures manufactured by physical methods and chemical methods can be mixed and proportioned according to different detection needs, and can be used in different detection fields.

(2) Magnetic particle inspection image intelligent recognition. With the development of modern industry, traditional industries are transforming and upgrading toward the direction of intelligent automation. Magnetic particle inspection, as an important method of non-destructive inspection, also urgently needs to be fully automated. Utilizing the unique optical, electrical, thermal, magnetic, mechanical and chemical properties of the nano-ferroferromagnetic powder material, combined with automatic or semi-automatic magnetic particle inspection equipment, design an image acquisition system to automatically record and classify the magnetic particle inspection crack images, which will promote The development of magnetic particle inspection automation in China.

(3) Detection of small cracks In the performance test of magnetic powder, it is generally required to be able to detect the fine cracks and coarse cracks produced by grinding and stress corrosion on the type I test block. Nano magnetic powder is very practical for small cracks. Therefore, some machining companies need to detect fine grinding cracks in different processes. Nano ferroferric oxide magnetic powder can be used for detection, which is beneficial to improve the defect detection rate.

(4) Development of a new type of magnetic suspension

Nano ferroferric oxide has low mass, good suspension in the carrier liquid, and is not easy to precipitate. It can be combined with some new carrier liquids with lower density and easy to volatilize to prepare a new type of magnetic suspension to make a magnetic suspension spray tank. Occasions where the detection location is not good and the detection accuracy is high.

(5) Improve the sensitivity of flaw detection-rubber casting method

The magnetic particle inspection on the inner surface of some parts has always been difficult. At present, the flaw detection-rubber mold method is more commonly used in China, which is a method that combines magnetic particle inspection and rubber mold. Magnetic suspension, etc. Due to the excellent magnetic properties of nano ferroferroic oxide, small magnetic powder particles, better fluidity in the rubber compound, a wider variety and range of rubber materials that can be matched with it, which can greatly improve the sensitivity of the flaw detection-rubber casting method.

(6) Modeling defect replication

Nanometer Fe3O4 magnetic powder has good contrast and repeatability for the replication of shaped defects, such as the confirmation of standard test block defects for non-destructive testing in special fields, and the shaping and positioning of precision defects.

(7) Coated detection

At present, the main difficulty with coating detection lies in the weak leakage magnetic field. Studies have shown that when the coating thickness is less than or equal to 50um, the detection result will not be affected, and the detection sensitivity can still be guaranteed when the coating thickness reaches 111um. Nano magnetic powder has the magnetic characteristics of high permeability, low coercivity and low remanence, and the particle size of the magnetic powder is small, and the fluidity is good. It can greatly increase the thickness of the coating for coating inspection and ensure the detection rate of fine defects. .

SAT NANO is one of the best supplier of Fe3O4 iron oxide nanopowder in China, we can supply 20nm, 50nm, 100nm, 1um, if you have any enquiry, please feel free to contact us at admin@satnano.com