Rolling oil amount control method for cold-rolling mill

Abstract

The invention discloses a rolling oil amount control method for a cold-rolling mill. Oil amount controlling of valves at all oil spray positions is performed according to the following formula: L=7100-A*S+B*R*1000, wherein 0.190 <=A<=0.195, 1.50 <=B<=1.55, L is the flow, and the unit of L is L / min; S is the timely rolling speed, the unit is m / min; R is the timely rolling ratio. The method has the advantages that the oil amount of the oil spray positions is controlled according to the formula, so that the oil spray mount at the oil spray positions is reduced to the largest extent, oil is saved, and production costs are reduced.

Description

technical field [0001] The invention relates to a method for controlling the amount of rolling oil in a cold rolling mill. Background technique [0002] Stainless steel cold rolling generally adopts a reversing rolling mill, and the rolling process lubricating fluid must use mineral oil, also known as rolling oil. Rolling oil is recycled during rolling, and the oil is sprayed to the rolling deformation area by a jet pump, and the used oil flows to the oil tank through the primary oil return pan and pipeline, and is reused after being filtered. [0003] In the prior art, in order to ensure the normal rolling of strips of various thickness specifications, the rolling oil injection valve is adjusted to maintain a fixed non-fully open opening (the detailed opening size and corresponding flow rate are shown in Table 1), so that the rolling oil flow rate is usually fixed , can not be adjusted according to the strip reduction rate and the running speed of the rolling mill. Theref...

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Problems solved by technology

[0003] In the prior art, in order to ensure the normal rolling of strips of various thickness specifications, the rolling oil injection valve is adjusted to maintain a fixed non-fully open opening (the detailed opening size and corresponding flow rate are shown in Table 1), so that the rolling oil flow rate is usually fixed , cannot be adjusted according to the strip reduction rate and the running speed of the rolling mill

Therefore, in order to ensure the smooth progress of rolling, the rolling mill will maintain a relatively large jet flow rate during rolling to ensure that rolling at various thickness specifications and speeds is met, which in turn causes a large amount of oil loss, and the rolling oil consumption is large, which increases the processing time. cost

At the same time, not only a large amount of rolling oil circulation increases the work of the filter tank, but also increases the viscosity and inclusion content of the rolling oil

When the viscosity of the rolling oil increases, the rolling oil will be easily adsorbed on the surface of the steel strip, and the rolling mill pollution such as oil spots will easily occur.

At the same time, the increase of the content of inclusions in the rolling oil increases the probability of the inclusions being adsorbed on the working rolls of the rolling mill, which is very easy to form rolling mill marks, which has a great impact on product quality

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