A method of manufacturing hot-rolled electrical steel
A production method and technology of electrical steel, applied in metal rolling, metal rolling, manufacturing tools, etc., can solve the problem that rough rolling cannot be realized in batches, solve snake skin-like rough defects, increase the rate of rough rolling, The effect of improving the yield
Active Publication Date: 2017-11-28
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.
[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 middle s...
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The invention discloses a method for making hot-rolled electrical steel, which belongs to the technical field of hot-rolled strip steel. The production method of the hot-rolled electrical steel includes heating the continuous casting slab of the hot-rolled electrical steel slab, performing rough descaling, performing width determination, performing the first rough rolling, performing the second rough rolling, and performing the second rough rolling. The vertical roll lubrication device is added to the vertical roll before the rough rolling mill, and the flying shear is carried out to heat the two sides of the intermediate slab of the continuous casting slab, and the fine descaling is carried out. Stand continuous rolling, add a guide wheel device to the guide plate on the entrance side of the finish rolling seven stands, carry out laminar flow cooling, and coil the continuous casting slab into coils. The manufacturing method of the hot-rolled electrical steel of the present invention effectively solves the complex edge rough state of the hot-rolled electrical steel, greatly improves the burr rolling rate of the cold-rolled electrical steel, and improves the yield of the whole process of the electrical steel.
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