Soft magnetic material annealing thermal treatment method

• Main Authors: XU QIAN, YIN QIUSHENG, JIN JIANLING, MA WUKUN, JIN RONG, WANG BO
• Format: Patent
• Language: Chinese; English
• Published: 18.12.2018
• Subjects: CHEMICAL SURFACE TREATMENT; CHEMISTRY; CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS

The invention discloses a soft magnetic material annealing thermal treatment method. The soft magnetic material annealing thermal treatment method comprises the following steps of: S1, performing rust-removal treatment on a soft magnetic material; S2, performing de-oiling rust-removal treatment on the soft magnetic material; S3, drying the soft magnetic material; andS4, adopting a chain type furnace to perform annealing treatment on the soft magnetic material, wherein a furnace hearth of the chain type furnace comprises a first heating area, a second heating area, a first heat-preserving area,a second heat-preserving area, a first cooling region, a second cooling area and a cooling warm area from an inlet to an outlet. Continuous annealing thermal treatment is performed on the soft magnetic material under an unsealed environment, so that annealing efficiency can be greatly improved; an annealing curve is formed in each warm area, so that a microstructure of the soft magnetic materialcan be improved, magnetic