Sintering process for reducing cracking of ferrite core

• Main Authors: ZHU RUI, YAO YUAN, ZHAO XIQIANG, XIN AIJUN
• Format: Patent
• Language: Chinese; English
• Published: 26.02.2021
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention provides a sintering process for reducing cracking of a ferrite magnetic core, and relates to the field of magnetic core sintering. The sintering process for reducing cracking of the ferrite magnetic core comprises the steps of magnetic core stacking, first-time heating, first-time heat preservation, second-time heating, second-time heat preservation, first-time cooling and second-time cooling. By reducing the contact area of a magnetic core and a ceramic plate, the magnetic core is uniformly heated, volatile substances in the magnetic core are effectively discharged and the magnetic core is uniformly heated by adopting multiple times of heating, heat preservation and cooling, and the cracking condition of the magnetic core in the heating process can be greatly reduced. 本发明提供一种减少铁氧体磁芯开裂的烧结工艺，涉及磁芯烧结领域。该种减少铁氧体磁芯开裂的烧结工艺，包括磁芯堆放、第一次加热、第一次保温、第二次加热、第二次保温、第一次冷却和二次冷却步骤。通过减小磁芯和陶瓷板的接触面积，使得磁芯受热均匀，以及采用的多次加热保温冷却，使得磁芯中的易挥发的物质有效排出和磁芯加热均匀，可大大降低了磁芯在加热过程中开裂情况。