A kind of production method of low-acid consumption cold-rolled steel strip product
A cold-rolled strip steel and production method technology, which is applied in the field of cold-rolled flat material processing, can solve the problems of low pickling efficiency and performance loss, and achieve the effects of improving pickling efficiency, low added value, and reducing acid consumption
Active Publication Date: 2016-06-29
WISDRI ENG & RES INC LTD
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Problems solved by technology
[0005] Therefore, in the process of pickling 4, it is difficult for the acid solution in the pickling tank to penetrate into FeO from the closed oxide crack 9 and react with it, thus causing the efficiency of pickling 4 to be very low. In order to improve the cleaning efficiency, it is necessary to set the elongation of the tension leveler 3 above the yield limit of the strip steel 7, so that the strip steel 7 produces plastic deformation. Under this working condition, the strip steel 7 can be partially Maintain the gaps of surface oxide 8 and improve pickling efficiency, but the performance loss of strip 7 products is serious
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[0031] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0032] Such as image 3 and Figure 4 Shown, a kind of low-acid consumption cold-rolled strip product production method that the present invention relates to specifically comprises the following steps:
[0033] A. Uncoiler 1 uncoils;
[0034] B. The tempering machine 11 crushes and peels off the oxide 8 on the surface of the steel strip 7;
[0035] C. The multi-roller straightener 12 further breaks and peels off the oxide 8 on the surface of the strip 7;
[0036] D. the scrubbing roller 16 in the scrubbing device 15 removes the oxide 8 that comes off and loosens on the surface of the strip steel 7;
[0037] E. Pickling and rinsing the strip steel 7 after smoothing, straightening and scrubbing;
[0038] F. the strip steel 7 after the pickling 4 is carried out cold rolling processing through the continuous rolling mill 23;
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The invention relates to a production method of a low-acid-consumption cold-rolled strip steel product. The method specifically includes the following steps: uncoiling via an uncoiler; breaking and stripping oxides on the surface of strip steel via a leveler; further breaking and stripping the oxides on the surface of the strip steel via a multi-roll straightener; removing the shed and loose oxides of the surface of the strip steel via scrubbing rolls in a scrubbing device; subjecting the leveled, straightened and scrubbed strip steel to acid pickling; performing cold rolling on the strip steel subjected to acid pickling via a tandem mill; recoiling the strip steel rolled via the tandem mill into a finished product. Through the method, convenience is brought to rapid permeation of acid liquor, efficiency of acid pickling is improved, and capacity of the mill is given into full play; part of the oxides on the surface of the strip steel is removed, acid reacting dose is reduced, and acid consumption is low; the added value of yield strength of the machined strip steel is low, and performance of the strip steel is basically unaffected; the profile is leveled and straightened before rolling, and profile accuracy of the cold-rolled products is enhanced.
Description
technical field [0001] The invention relates to the technical field of cold-rolled flat material processing, in particular to a production method of low-acid-consumption cold-rolled strip products. Background technique [0002] Such as figure 1 As shown, usually people adopt pickling mill combination unit to produce cold-rolled products. 6 composition, using tension leveling machine 4 for mechanical phosphorus breaking, this production process has unsatisfactory phosphorus breaking effect; in the production process, due to the phosphorus breaking effect of the tension leveling machine, many varieties of products must pass through at a reduced speed pickling in the pickling tank to increase the pickling time to ensure the surface quality of the strip steel after pickling, which inevitably restricts the rolling capacity of the rolling mill. At the same time, a large amount of acid solution is consumed in the pickling process Calculated on the average specification, the acid ...
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IPC IPC(8): B23P9/00
CPCB21C37/02
Inventor 丁文红肖林辉贺文健周智勇黎倩李佳佳
Owner WISDRI ENG & RES INC LTD