Method for rolling ultra-thin cold-rolled tinning black plate

Abstract

Disclosed is a method for rolling an ultra-thin cold-rolled tinning black plate. As for a tinning black plate of MRT-3 and MRT-4 steel types and with band steel inlet width being 800-850 mm, inlet thickness being 1.7-1.8 mm and rolling thickness being 0.17-0.18mm, a five-rack acid pickling cold continuous rolling unit is used for production; a distribution mode with relatively balance motor power is used for rolling loads; the rolling reduction of each rack is determined according to the motor power model calculated value of each rack; the cold continuous rolling tension system, the cold continuous rolling working roller and middle roller bending system, the low-speed rolling process additional tension system, the roller technological parameters and the rolling process emulsion technological parameters are reasonably set, so that the unit speed is optimized, the rolling loads of all the racks are distributed in balance, the unit rolling speed and the equipment productivity are improved, and energy and electricity consumption of the unit is greatly reduced; the production cost is reduced, and good plate shape quality of an outlet cold-rolled plate is guaranteed.

Description

technical field [0001] The invention belongs to the field of pressure processing of metal materials, in particular to a rolling method of MRT-3, MRT-4 steel grades and ultra-thin cold-rolled tin-plated steel strips with a thickness below 0.20 mm. Background technique [0002] With the improvement of people's living standards in our country, the domestic demand for tinplate has continued to grow in recent years, and the production capacity has also increased sharply to 4.4 million tons. However, considering per capita consumption, my country's tinplate market is far from saturated. According to statistics, the current per capita consumption of tinplate packaging (mainly referring to beverages, cans, food, etc.) is 1.5kg in Asia, 6.9kg in Europe, 8.4kg in the United States, and about 2kg in my country; The annual consumption is less than 1.5kg, the per capita annual consumption level of canned food in Europe is 50kg, and the per capita annual consumption level in Japan is 23kg...

AI Technical Summary

Problems solved by technology

Application No. 200910063936.8 discloses "the production method of the secondary cold-rolled tin-plated original plate", although the strip reduction rate and the production process when rolling the tin-plated original plate are proposed, but any method for rolling the tin-plated original plate is not given. Process parameter value