B-containing high-formability extremely thin hot-rolled pickling plate and preparation method thereof

A hot-rolled pickling and formability technology, which is applied in the field of hot-rolled pickling sheets with high formability and ultra-thin specifications containing B and its preparation, can solve the problem of less than 400MPa, the lowest and effective solid solution B content is reduced, Mn and Ti The problem of low content is eliminated, and the effect of eliminating the yield plateau, suppressing the transverse fold defect and improving the surface quality is achieved.
CN111155033AActive Publication Date: 2020-05-15PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
Publication Date
2020-05-15

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Abstract

The invention belongs to the technical field of pickling steel strip production, and particularly relates to a B-containing high-formability extremely thin hot-rolled pickling plate and a preparationmethod thereof. The B-containing high-formability extremely thin hot-rolled pickling plate with high surface quality and the preparation method thereof are provided. The hot-rolled pickling plate comprises 0-0.005% of C, 0.10-0.20% of Si, 0.60-1.00% of Mn, 0.002-0.005% of B, 0.03-0.06% of Ti, 0.010-0.060% of Als, 0-0.010% of P, 0-0.002% of S, 0-0.0050% of N, 0-0.0040% of O and the balance and inevitable impurities. The hot-rolled pickling plate obtained by controlling steel chemical components and the preparation process has the advantages of being high in tensile strength, high in elongation,low in yield strength and low in yield ratio.
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Description

technical field

[0001] The invention belongs to the technical field of production of pickling steel strips, and in particular relates to hot-rolled pickling strips with high formability and ultra-thin specifications containing B and a preparation method thereof. Background technique

[0002] The hot-rolled pickled plate is made of high-quality hot-rolled thin plate as raw material. The oxide layer is removed, trimmed and finished by the pickling unit. The main processes include uncoiling of hot-rolled raw materials → laser welding → scale breaking by the stretching and leveling unit → pickling → rinsing → Drying→on-line leveling→edge trimming→on-line oiling→baling→packing and storage, the surface quality and use requirements (mainly cold-rolled forming or stamping performance) are intermediate products between hot-rolled sheets and cold-rolled sheets, It is an ideal substitute for some hot-rolled and cold-rolled sheets. Hot-rolled pickled plate is an emerging product in the...

Claims

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