Hot rolling production method of H section steel
A production method, H-shaped steel technology, applied in metal rolling, guiding/positioning/alignment devices, etc., can solve the problems of reduced yield, large center deviation of head and tail, increase of cutting head and tail, and achieve left and right swing The effect of weakening the degree, reducing the center deviation of the head and tail, and reducing the amount of head and tail cutting
Active Publication Date: 2021-09-17
MAANSHAN IRON & STEEL CO LTD
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Problems solved by technology
When the center deviation of the head and tail of the H-beam does not meet the requirements of the customer or the standard, it is necessary to increase the head and tail trimming amount, which will greatly reduce the yield
[0003] The main reason for the large center deviation of the head and tail of the hot-rolled H-beam is that the head and tail are in an unstable state when the rolled piece is bitten from the entrance side of the rolling mill or thrown out from the exit side, that is, the head and tail will be in an unstable state. Swing on both sides of the rolling direction, the center deviation caused by the swing of each pass is superimposed, and finally leads to the abnormally large center deviation of the head and tail of the finished product
[0004] At present, there is no effective method to control the head and tail center deviation of hot-rolled H-beam
Method used
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[0039] The specific embodiment of the present invention will be described in further detail by describing the embodiments below with reference to the accompanying drawings. The purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solutions of the present invention. and contribute to its implementation.
[0040] It should be noted that in the following embodiments, the "first" and "second" do not represent an absolute distinction in structure and / or function, nor do they represent a sequence of execution, but are only for Easy to describe.
[0041] Such as figure 1 As shown, the invention provides a kind of H-beam hot-rolled production method, comprises the steps:
[0042] S1, billet heating;
[0043] S2, high pressure water descaling;
[0044] S3, billet rolling;
[0045] S4, universal rolling;
[0046] S5, red check;
[0047] S6, double-foot upper cooling bed cooling;
[0048] S...
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The invention discloses a hot rolling production method of H section steel. The method comprises the steps that S1, a blank is heated; S2, scales are removed with high-pressure water; S3, cogging and rolling are conducted; and S4, universal rolling is conducted, wherein the step S3 comprises the steps that S301, before a rolled piece enters a BD rolling mill, a manipulator clamps the rolled piece; S302, the rolled piece is gripped into the BD rolling mill; S303, the rolled piece is rolled through the BD rolling mill; S304, the manipulator is opened by a first set opening degree; S305, when the tail of the rolled piece is about to enter the BD rolling mill, the manipulator clamps the rolled piece again; and S306, after the tail of the rolled piece passes through the BD rolling mill, the manipulator is opened. According to the hot rolling production method of the H section steel, the up-and-down buckling and left-and-right swinging degree of the head and the tail of the rolled piece is obviously weakened, the center deviation of the head and the tail of the hot-rolled H section steel can be reduced, the crop amount is effectively reduced, and the yield of the hot-rolled H section steel is increased.
Description
technical field [0001] The invention belongs to the technical field of production of hot-rolled H-shaped steel, in particular, the invention relates to a production method of hot-rolled H-shaped steel. Background technique [0002] In the production of hot-rolled H-shaped steel, the following phenomenon usually exists, that is, the central deviation of the middle part along the length direction of the entire H-shaped steel is extremely small, and the central deviation is relatively large near the head and tail of the H-shaped steel. When the center deviation of the head and tail of the H-beam does not meet the requirements of the customer or the standard, it is necessary to increase the head and tail trimming amount, which will greatly reduce the yield. [0003] The main reason for the large center deviation of the head and tail of the hot-rolled H-beam is that the head and tail are in an unstable state when the rolled piece is bitten from the entrance side of the rolling mi...
Claims
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IPC IPC(8): B21B1/088B21B39/16
CPCB21B1/088B21B39/16B21B2201/06
Inventor 汪杰圣立芜吴保桥张文满吴湄庄
Owner MAANSHAN IRON & STEEL CO LTD