Manufacturing method for hot-rolled electrical steel
A production method and technology of electrical steel, applied in the direction of metal rolling, metal rolling, manufacturing tools, etc., can solve the problem that rough edge rolling cannot be realized in batches, and achieve the solution of snake skin-like rough defects, edge roughness, The effect of improving the yield
Active Publication Date: 2015-11-04
BEIJING SHOUGANG CO LTD
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Problems solved by technology
[0003] The invention provides a method for making hot-rolled electrical steel, which solves or partly solves the technical problem in the prior art that burr rolling cannot be realized in batches
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[0015] see figure 1 A method for manufacturing hot-rolled electrical steel provided in an embodiment of the present invention includes the following steps:
[0016] Step 1, heating the continuous casting slab of the hot-rolled electrical steel billet.
[0017] Step 2, roughly descaling the heated continuous casting slab.
[0018] In step 3, the width of the continuous casting slab after rough descaling is determined.
[0019] In step 4, the first rough rolling is performed on the continuously cast slab after the width is fixed.
[0020] In step 5, a second rough rolling is performed on the continuous casting slab after the first rough rolling, and a vertical roll lubrication device is added to the vertical roll before the second rough rolling mill.
[0021] Step 6: The continuous casting slab after the secondary rough rolling is subjected to flying shear through the heat preservation cover, and a heating device is added before the flying shear to heat the two sides of the m...
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The invention discloses a manufacturing method for hot-rolled electrical steel, and belongs to the technical field of hot-rolled strip steel. The manufacturing method for the hot-rolled electrical steel includes the steps of heating continuous casting sheet billets of hot-rolled electrical steel billets, removing scales roughly, determining the width, performing primary rough rolling and secondary rough rolling, arranging a vertical roll lubricating device on a vertical roll in the front of a secondary rough rolling mill, performing shearing, heating the two side edges of intermediate billets of the continuous casting sheet billets, removing scales finely, arranging a heating device in the front of a flying shear, performing continuous rolling through seven finish rolling stands, arranging guide wheel devices on inlet-side guide plates of the seven finish rolling stands, performing laminar cooling, and coiling the continuous casting sheet billets into coils. By means of the manufacturing method for the hot-rolled electrical steel, the complex edge roughness of the hot-rolled electrical steel is effectively avoided, the burr rolling rate of the cold-rolled electrical steel is greatly increased, and the whole-process yield of the electrical steel is increased.
Description
technical field [0001] The invention relates to the technical field of hot-rolled strip steel, in particular to a method for making hot-rolled electrical steel. Background technique [0002] The edge quality state of hot-rolled electrical steel directly determines whether cold-rolled electrical steel can achieve rough rolling. Due to the different silicon content of electrical steel, the quality state of the hot-rolled curling part is different. Such defects seriously affect the edge quality of cold-rolled electrical steel. For a long time, there has not been a set of targeted, complete and effective control methods for this complex edge quality state of hot-rolled electrical steel, resulting in high shear loss during the production process of cold-rolled electrical steel, and the rough edge rolling cannot be mass-produced. accomplish. Contents of the invention [0003] The invention provides a method for making hot-rolled electrical steel, which solves or partially sol...
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IPC IPC(8): B21B1/30B21B39/18B21B45/04
Inventor 曹瑞芳李彬王宇韬李金保王秋娜南宁安冬洋张转转
Owner BEIJING SHOUGANG CO LTD