Method for obtaining high-orientation GOSS texture Fe-3% Si material

• Main Authors: GUAN LIUHUI, HE XIAOBO, OUYANG YU, LIANG MENGFEI, ZHANG ZHENSHEN, WANG HAIYAN, CHENG GUANJIANG, WANG ZHONGQI, XIA ZHISHENG, HUANG ZHONG, WANG XINZHI, ZHANG LINGZHI, XU DANGWEI, WU BAOQING, WANG JUN, KONG DENAN
• Format: Patent
• Language: Chinese; English
• Published: 21.06.2022
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a high-orientation GOSS texture Fe-3% Si material and a preparation method thereof. The production method mainly comprises the steps of steelmaking, slab continuous casting, hot continuous rolling, normalizing, acid pickling, cold rolling, decarburization nitriding annealing, magnesium oxide separant coating, high-temperature cover annealing and flat stretching annealing. According to the method, the Goss texture orientation degree of the finished product is remarkably improved mainly through the principle that the key process is matched with the plate texture. A large number of {100} surface textures are reserved by reserving casting blank columnar crystals, and the Goss texture with the accurate orientation is obtained on the secondary surface layer of a rolled plate under the action of shearing force in the hot rolling procedure. Decarburization nitriding annealing is conducted, and the annealing temperature and nitriding amount are matched so that the post-annealing {111} lt can be