Worker roller abrasion forecasting method of cold continuous rolling device based on mechanism and operation condition

Abstract

The invention discloses a technique for forecasting working roll abrasion, which is suitable for a four-roller cold continuous rolling mill and is based on the combination of a mechanism and an operating condition. The technique is characterized by comprising the following steps: a, constructing a working roll abrasion model; b, constructing an influence equation of the working roll abrasion operating condition; c, constructing a mechanism influence equation in the working roll abrasion loss; d, analyzing and calculating a mechanism influence part in the working roll abrasion; e, measuring and collecting actual data of the working roll abrasion; f, solving an operating condition influence coefficient alpha; g, establishing a forecasting model of the working roll abrasion on the basis of the combination of the mechanism and the operating condition; and h, forecasting the working roll abrasion in a specific rolling cycle. The technique for forecasting the working roll abrasion sufficiently considers the characteristics of devices and the operating condition in the process of cold continuous rolling, organically combines the abrasion mechanism and the measuring result of actual abrasion data in industrial production, is applicable to the symmetrical abrasion and the asymmetrical abrasion of the working roll, greatly improves the forecasting precision for the field working roll abrasion, and lays a foundation for roll shape design and profile shape control.

Description

technical field [0001] The invention relates to a cold tandem rolling production technology, in particular to a work roll wear prediction technology suitable for a four-high tandem cold rolling mill based on the combination of mechanism and working conditions. Background technique [0002] In recent years, with the rapid development of the manufacturing industry, users have increasingly stringent requirements on the dimensional accuracy of cold-rolled strips and their coated products. The calculation accuracy of roll wear is directly related to the calculation accuracy of the load roll shape, roll gap shape and roll system deformation, and is closely related to the correct setting of roll bending force and the correct use of the segmental cooling compensation system, which directly affects the finished product. shape quality. Roll wear is a slow cumulative process. There are many and complex factors affecting roll wear, and the wear is different under different working cond...

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Problems solved by technology

In the past, the research on the mechanism model of roll wear in the cold rolling process was less, and mainly focused on hot rolling (main literature: 1, Spuzic S, Strafford K N, Subramanian C, et al.Wear of hot rolling millrolls: an overview[ J]. Wear, 1994, 176(2): 261-271; 2. Chen Liansheng, Huang Chuanqing, Lian Jiachuang. Numerical measurement and analysis of roll wear in hot strip continuous rolling mill. Rolling Steel, 2002, 19(1): 23-25; 3. Chen Liansheng, Lian Jiachuang. Calculation theory of roll wear in hot strip continuous rolling mill. Journal of Hebei Institute of Technology, 2001, 23(1): 24-28). There are many researches on the measurement technology of roll wear in the rolling process. A lot of wear law curves have been obtained, but a relatively accurate calculation model for roll wear has not been formed so far

In particular, the existing roll grinding models for the cold rolling process often do not combine the mechanism with the actual rolling conditions, and the wear model calculation methods obtained are not universal (main literature: Fu Huagao, Li Changsheng, etc. Research on Mathematical Model of Cold Roll Wear. Iron and Steel Research, 2003, (4): 26-29)

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