Double-rack six-roller UCM leveling and double cold reduction unit for production of tinned substrate

Abstract

The invention relates to a double-rack six-roller UCM leveling and double cold reduction unit for production of a tinned substrate. The double-rack six-roller UCM (Tandem Cold Mill) leveling and double cold reduction unit comprises a No.1 rack and a No.2 rack; the No.1 rack or the No.2 rack comprises an upper supporting roll, a lower supporting roll, an upper middle roll, a lower middle roll, an upper working roll, a lower working roll, a lower middle roll bending cylinder, a lower working roll positive bending cylinder, a lower working roll side pushing cylinder, a lower working roll negative bending cylinder, an upper working roll negative bending cylinder, an upper working roll side pushing cylinder, an upper working roll positive bending cylinder, an upper middle roll positive bending cylinder, a roll shifting device; both an anti-winding guide plate and an outlet guide plate are provided with rubber scrapers. The double-rack six-roller UCM leveling and double cold reduction unit not only is suitable for leveling production of T1 to T5 materials of tinned substrates, but also can be used for production of DR7 to DR10 double cold-reduced tinned plates and also can be suitable for leveling production of a shadow mask band steel, an internal magnetic shielded band steel, a common cold plate and DDQ, EDDQ and IF dead-soft band steels; operation stability of a rolling mill, shape control accuracy and product quality are greatly improved.

Description

technical field [0001] The invention relates to the technical field of cold rolling, and more specifically relates to a double-stand six-roller UCM skin-passing and secondary cold-rolling unit for the production of tin-plated substrates. Background technique [0002] Cold-rolled ultra-thin steel plate is one of the high value-added steel varieties in commercial steel products, and it is also the weakest link in steel products. Cold-rolled ultra-thin plate is the one with the largest gap, the most imports, and the most prominent contradiction between supply and demand among steel varieties in my country. The country needs to spend a huge amount of money to import about 2 million tons of cold-rolled ultra-thin plate products every year. Since the production of ultra-thin plates is characterized by thin strip steel and high operating speed, it is very difficult to control the shape, rolling force, elongation, and tension. The production process and equipment are different from ...

AI Technical Summary

Problems solved by technology

In our country, due to the late start in the field of rolling technology, the following problems exist in the rolling mill units for the production of such high value-added cold-rolled products: 1) The traditional double-stand tempering and secondary cold-rolling mill adopts 4-roll structure, lack of shape adjustment methods such as roll shifting and intermediate roll bending, resulting in poor strip shape; 2) Traditional double-stand leveling and secondary cold rolling mills generally use circulating emulsion with a concentration of 3 to 5% to lubricate the rolls When producing very hard strips such as DR9 and DR10, the required rolling force is large and the rolling stability is poor; 3) The traditional double-stand leveling and secondary cold rolling mill meets the requirements of tinplate leveling The work roll diameter is generally 450-550mm, and the roll diameter is too large. The thickness of the roll diameter in this range is relatively thick, and it is impossible to realize the stable production of ultra-thin strip steel of 0.15mm or less; 4) The traditional model emulsion blowing Sweeping is not clean and dew condensation is serious, resulting in serious emulsion residue on the surface of the strip steel at the exit of the No. In the leveling mode, metal dust is difficult to remove, and it is easy to cause color difference on the board surface and cause environmental pollution

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