How about WISCO cold rolling mill?

not bad. The cold rolling general factory is divided into three branches. Three cold rolling is the best. Please see official website's introduction below.

Brief introduction of the Cold Rolling General Factory of WISCO

1. Overview

The cold rolling factory was one of the main factories of WISCO's "one meter seven" project approved by Mao Zedong, Zhou Enlai and other party leaders in the 197s.

it started to build in 1973, was formally built in 1975, was put into trial operation in 1978, and achieved a design output of 1 million tons in 1986. It took eight years from commissioning to successful design and production. During this period, the cold rolling mill eliminated the interference and influence of the Gang of Four, persisted in reform and opening up, vigorously carried forward the spirit of hard work, extensively carried out technical training and on-the-job training, and worked hard to digest and absorb new processes, technologies and equipment imported from West Germany, and successively won major victories such as installation and commissioning, successful commissioning, design exceeding the production level, and enterprise rectification and acceptance. The success of the design of the cold rolling mill to reach 1 million tons indicates that the cold rolling mill has entered a brand-new development period from the start-up period. These eight years are eight years of ideological emancipation, eight years of hard work and eight years of entering the ranks of metallurgical modern enterprises in China.

since 1987, the cold rolling mill has accelerated the pace of enterprise management mechanism reform, and in 1997, the cold rolling mill of Wuhan Iron and Steel Co., Ltd. was established, and it has gone through eleven years. During this period, the cold rolling mill grew with the construction of WISCO; With the reform of WISCO, it has grown stronger. In the past eleven years, the cold rolling mill has experienced the transformation from planned economy to market economy, the severe test of market economy, the divestiture of the main body and the restructuring of enterprises, and achieved new take-off by grasping the two "wheels" of technological progress and technological transformation on the one hand. The success of the shareholding system reform of the cold rolling mill indicates that the cold rolling mill has achieved a historic leap and opened a new historical period for the cold rolling mill. These eleven years are the eleven years of deepening the reform and development of cold rolling mill; It is an eleven-year period in which the technical progress and technical transformation of the cold rolling mill have continuously yielded results; It is eleven years that the comprehensive competitive strength of cold rolling mill enterprises has been continuously enhanced. The establishment of modern enterprise system in cold rolling mill has injected new vitality into the reform, development and production of cold rolling mill.

from 1998 to 28, it took eleven years for the cold rolling mill to innovate its operation mode and implement the general factory management system. During this period, the cold rolling mill has continuously improved and strengthened the construction of modern enterprise system to ensure that all systems are in line with international standards. Adhere to the market-oriented, benefit maximization as the principle, implement the boutique brand strategy, and make new achievements in production, operation and reform and development. Especially since the 16th National Congress of the Communist Party of China, the cold rolling mill has conscientiously implemented Scientific Outlook on Development, made every effort to promote the three development strategies of "optimizing varieties, improving quality, building a world-class automobile plate base, strengthening the construction of talent team, improving the comprehensive quality of employees, deepening system reform and establishing a scientific management system", and achieved a new round of reform and development. These years are the years when the management of cold rolling mill has been continuously improved and the management level has been continuously improved. These years are the years when cold rolling mills seize development opportunities, promote all-round innovation and create new glories; These years have witnessed the fastest development, the greatest technological transformation, the best economic benefits and the benefits for workers in the history of cold rolling mills.

as much as you sow, you reap. In the past 3 years, the cold rolling mill has gone through a difficult road of entrepreneurship, development and innovation. From that year, it filled the gap of scarce steel varieties in the country and gradually developed into a national automobile plate base today. From thirteen main production lines in a factory in those years, it has gradually developed into thirty-eight main production lines in three branches of a general factory today; The output and quality of products are rising, and the varieties of "double high" are increasing; At the same time, the cold rolling mill has created a team of high-quality cadres and workers, and trained a large number of cold rolling technical personnel for all parts of the country. Thirty years of wind and rain record the vigorous growth of cold rolling mills; Thirty years' brilliant achievement embodies the painstaking efforts and wisdom of cold-rolled people.

recalling the past, cold-rolled people are full of emotion; Looking at the present, cold-rolled people are passionate; Show the future, cold-rolled people are full of ambition.

At present, the company is planning the fourth cold rolling. Under the guidance of the spirit of the 17th National Congress of the Communist Party of China and Scientific Outlook on Development, the cold rolling general factory will continue to develop and grow, and its tomorrow will be more brilliant.

2. Brief introduction of the first branch factory

The first branch factory of Cold Rolling General Factory is one of the main factories of the 1.7-meter rolling mill project, which is located in the southeast of WISCO, starting from the new batching station in the east, reaching the hot strip steel mill in the west, reaching the east trunk line in the south and connecting the second steelmaking plant in the north. The first factory covers a total area of 4, square meters, with a total construction area of 2, square meters, including the main workshop area of 149, square meters. The main workshop is 786 meters long and 218 meters wide, divided into 16 spans.

No.1 branch factory was introduced from the former Federal Republic of Germany with the personal approval of the first generation leaders Mao Zedong and Zhou Enlai in the 197s. It had the world advanced technology level in the 197s and was the most modern continuous wide-band rolling mill factory at that time. In 1973, it formally negotiated with foreign businessmen. On March 27th, 1974, it signed the Contract for Continuous Cold Rolling Factory of 17 mm wide-band steel with DeMark, Schloman and Simak, and Wuhan Iron and Steel Design Institute designed the factory. In the fourth quarter of 1978, various production lines were put into trial operation one after another. In 1978, comprehensive commissioning production began. On September 28, 1978, the first cold-rolled sheet was rolled out. On December 12, 1981, the state accepted it, and it was officially put into production. In 1985, all the investment was recovered. Computer control technology was adopted for the first time in a branch factory, which initiated the cold rolling industry in China and filled the blank that cold rolled sheet, galvanized sheet and tinned sheet could not be produced by tandem cold rolling in China. It has 13 units, including continuous pickling line, 17mm five-stand tandem cold tandem rolling line, continuous electrolytic degreasing line, 1 nitrogen-hydrogen bell-type annealing furnaces, 17mm single-stand leveling line, 142mm double-stand leveling and secondary cold rolling line, crosscutting line 1#, 2#, 3#, longitudinal shearing line, inspection and rewinding line, continuous hot galvanizing line and continuous tin electroplating line.

in order to broaden the variety and expand the production capacity, the first branch factory introduced the color coated steel plate production line with the level of 198s from Britain in 1984, and put it into production formally in 1988. In 1987, a HC rolling mill line was introduced from Germany, which specialized in rolling tin-plated raw plates, and it was officially put into operation in 1989. In 199, a longitudinal and transverse shearing line for tinplate and two flying shears for Hongre cold-rolled plate were imported from Germany. Up to now, the production scale of five series of products, namely cold-rolled sheet, continuous hot-dip galvanized sheet, continuous tin-plated sheet, color-coated steel sheet and non-oriented electrical steel, has been formed, meeting the needs of users, and the products have become serialized and specialized.

in September, 23, the cold rolling mill took the technical transformation from a high starting point as an opportunity, and the company raised 2.26 billion yuan to carry out a large-scale overall transformation of a branch factory, so as to expand the production scale, improve product quality, increase product varieties and specifications, and meet the needs of different customer groups. On October 28th, 24, the acid-rolling line reached the design level three days ahead of schedule, which exceeded the production level of domestic similar modified units for more than one year, and reached the international advanced level in terms of process technology, automatic control, hydraulic transmission and detection means, with the characteristics of large-scale, continuous, automatic and high-speed. While updating a series of related equipment, the main production units of pickling-five-stand cold rolling tandem, galvanizing unit, 48 ordinary nitrogen-hydrogen bell-type annealing furnaces, tin plating 1# shearing unit, 3# transverse shearing unit and longitudinal shearing unit were reformed. At the same time, a new push-pull pickling unit, a rewinding unit, a continuous decarburization annealing unit for silicon steel and two shearing units were built, making a branch factory have 18 production lines and 2,36 sets of various professional equipment.

3. Brief introduction of the second factory

The second factory is a key supporting project and benefit project in WISCO's "Tenth Five-Year Development Plan" about "building a boutique base, improving product grade and focusing on building a wide-band steel production line". Located in the new steel rolling area south of No.3 Steelmaking Plant of WISCO, the No.2 Branch Plant covers a total area of 28, m2 and the main building covers a total area of 265, m2. The main workshop is mainly composed of 9 spans, including raw material mill span, pickling span, rolling mill span, post-rolling span, hot dip galvanizing unit span, continuous annealing unit span, rewinding and packaging unit span, etc. The unit layout strives for smooth process flow and leaves a certain development area.

the second branch factory started to build in 22, and signed the first import contract-acid rolling combined unit on September 26, 23. In June 24, it signed equipment contracts with foreign parties for all production units, which entered the stage of full implementation. On December 15, 25, the acid rolling line was fully linked for trial operation, achieving a success. The main key equipment of the newly-built second cold rolling mill is imported from Germany (Simak, Demag, Siemens, Alstom, etc.), and its precision level is world-class, which ensures the accuracy of process parameters and the stability of product quality, and can produce products needed by high-tech and high-added cars, household appliances and other industries (the width of car panels can reach 28mm), among which car panels can fill the gap in the domestic market, and their quality, performance, specifications and accuracy are all the same. The main production units include 13 main production lines, including pickling-rolling mill combination unit, continuous annealing unit, 3 galvanizing units, color coating unit, rewinding inspection unit, 1 rewinding slitting unit, 2 crosscutting units and 2 automatic packaging units, and 147 sets of various professional equipment. The second factory has a total investment of 8 billion yuan and an annual design capacity of 2.15 million tons/year, including 9, tons/year for cold-rolled products, 1.5 million tons/year for galvanized products and 2, tons/year for color-coated products.

4. Brief introduction of No.3 branch factory

No.3 branch factory project is one of the key projects of WISCO's 11th Five-Year Plan development and one of the key projects of WISCO's great development at present, which is directly related to the improvement of the company's overall benefit and the acceleration of the construction of automobile plate base in WISCO. The land area of the third branch factory is 26,m2, the main workshop area is 81,58.5m2, and the leveling elevation of the site is initially determined to be 32.1m.

the project of the third branch plant mainly adopts domestic technology integration and independent innovation, with WISCO as the main contractor, MCC South General Contractor, and more than ten equipment manufacturers and manufacturers, such as Yizhong, Wuhan Institute and Siemens-Austrian Steel Union, participating in the design and manufacture. The unit requires to ensure advanced and reliable technology and equipment, and to ensure the stable production of domestic first-class automobile panels and high-quality household appliances. The main units include seven main production lines, including pickling-rolling combined unit, continuous annealing unit, hot dip galvanizing unit, rewinding inspection, rewinding and splitting, two packaging lines and supporting public and auxiliary facilities. The total investment of No.3 Branch Plant is 3.5 billion, and the annual design capacity is 1.1 million tons, including 75, tons of cold-rolled coils and 35, tons of hot-dip galvanized coils. The No.3 cold-rolled acid rolling mill group plans to roll out the first coil of steel in October 29.

Cold Rolling General Factory has the technical support for the whole process of automobile plate production and all-round support for entering the automobile plate market. The key equipment adopts the world's most advanced control technology and hardware configuration, and is equipped with the world's leading equipment and instrumentation detection technology, such as laser welding machine, shallow groove turbulent pickling, full hydrogen bell furnace, ceramic furnace roller, tension leveler, automatic plate shape control, fine roller cooling, Siemens modern second flow automatic thickness control, online roller changing, etc. All kinds of energy, logistics, process and process control parameters are equipped with advanced measuring and testing equipment, and effectively controlled, so that the overall production process level and product quality of our factory reach the domestic leading level, laying a solid foundation for the construction of WISCO automobile board base and home appliance board base.