Steel strip manufacturing method
A production method and technology for steel strips, applied in metal rolling and other directions, can solve the problems of surface yellowing, edge chromatic aberration, edge thin lines, etc., to beautify the appearance, improve edge thin line defects, and prolong service life. Effect
Active Publication Date: 2019-02-22
SHOUGANG JINGTANG IRON & STEEL CO LTD +1
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Problems solved by technology
In actual production, DP steel often has many surface defects after pickling, such as edge color difference, surface yellowing and edge thin lines, etc. These surface defects seriously affect the appearance and service life of DP steel.
Among them, edge color difference and surface yellowing can be solved by controlling the temperature of key points in the hot rolling process, as well as controlling the atmosphere of the cold rolling annealing furnace and the coating of the roll surface in the furnace, but the thin line defects at the edge cannot be solved so far
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[0047] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.
[0048] It should be noted that like numerals and let...
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The invention relates to the technical field of steel production, in particular to a steel strip manufacturing method. The steel strip manufacturing method comprises the following steps of treating provided molten steel so as to obtain a to-be-treated billet with chamfering structures at the edge; feeding the to-be-treated billet into a heating furnace for soaking treatment to form the finished billet, and sending out; and rolling the finished billet to form a finished steel strip. According to the steel strip manufacturing method, the edge of the to-be-treated billet is made into a shape withchamfering structures, so that the phenomenon that the edge of the billet has flanges similar with a billet with the right-angle-structure edge in the prior art is avoided; therefore, after the to-be-treated billet is subjected to an pickling process, the thin-line defect at the edge part can be overcome to a great extent, so that the appearance of the finished steel strip is effectively beautified; and meanwhile, the service life of a stamping grinding tool for treating the finished steel strip can be effectively prolonged.
Description
technical field [0001] The invention relates to the technical field of steel production, in particular to a method for making a steel strip. Background technique [0002] DP steel belongs to advanced high-strength steel. The cold-rolled DP steel included in DP steel is made of high-quality hot-rolled steel strip. The quality and use requirements (mainly stamping and hole expansion performance) meet the actual needs of the steel. At present, the application of DP steel is not limited to structural parts, but extended to the application of outer plates, and its production has also been carried out according to the quality requirements of cold-rolled outer plates. In actual production, DP steel often has many surface defects after pickling, such as edge color difference, surface yellowing and edge thin lines, etc. These surface defects seriously affect the appearance and service life of DP steel. Among them, edge chromatic aberration and surface yellowing can be solved by con...
Claims
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IPC IPC(8): C21D8/02B21B1/22
CPCB21B1/22B21B2001/225C21D8/0205C21D8/021C21D8/0226
Inventor 李润昌张环宇张亮亮齐达李瑞韩乐李钊杨昕
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD