What is a Steel Sheet?

It is a flat steel made by pouring molten steel and pressing it after cooling.

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With the development of science and technology and industry, higher requirements have been placed on materials, such as higher strength, resistance to high temperature, high pressure, low temperature, resistance to

According to the content of alloy elements, it is divided into:

Interaction of alloying elements with iron and carbon

After alloying elements are added to steel, they are mainly present in steel in three forms. That is: forming a solid solution with iron; forming a carbide with carbon; it may also form in high alloy steels

Effect on the range of austenite and ferrite

The elements that expand or shrink the phase region also expand or reduce the phase region in the Fe-Fe3C phase diagram, and when the content of Ni or Mn is large, the steel can obtain a single phase at room temperature.

(Also known as

Use

Mainly used in the manufacture of automobiles and tractors

Use

alloy

(1) Output hit a record high. From January to June 2013, the country's cumulative production

(1) The high rigidity section steel formed by the high-strength plate has a large moment of inertia and flexural modulus, especially due to the application requirements that require

Anpan Steel Base

Including Anshan Iron and Steel Company and Benxi Iron and Steel Company. It is located in the central industrial area of Liaoning, leaning on the Qianshan Mountains in the east, adjacent to the Prince Edward River, a tributary of the Liaohe River in the north, the Qianli Plain on both sides, and the Bohai Bay in the south. The distance between Anshan and Benxi steel companies is only 10O kilometers. The surrounding resources are rich, and the proven reserves of iron ore are nearly 10 billion tons, of which the industrial reserves are more than 4 billion tons, ranking first among major bases. The existing iron ore mining capacity is about 40 million tons, and it is the largest iron ore base in the country. In 1990, the output of iron ore (raw ore) reached more than 38 million tons, accounting for more than one-fifth of the country's total iron ore output. Anshan Iron and Steel's main iron ore bases are: Donganshan, Yanqianshan, Qidashan, Dagushan, and other iron mines. They are only 10 to 20 kilometers away from Anshan Iron and Steel and are distributed in an arc shape. Bengang has: Nanfen and Weitoushan, which are located in the south and north of Bengang, about 25 kilometers apart. Central Liaoning also has abundant coal resources. It owns coal mines such as Benxi Lake (Caitun) and Hongyang (Shennan), and is within 100 kilometers of the iron and steel base. However, due to long-term mining, the coal in the area cannot meet the needs of the steel industry.

After more than 40 years of reconstruction and expansion, Anben Iron and Steel Base is still the largest steel base in China. In 1990, the output of pig iron was 10.1626 million tons, accounting for more than 16% of the country's total. The output of steel was 1.008116 million tons, accounting for more than 15% of the country. Among them, Anshan Iron & Steel has a long history and large scale. It has iron mines, ore dressing plants, sintering workshops, coke ovens, and smelting equipment such as ironmaking, steelmaking, and rolling materials, as well as auxiliary equipment such as pipe casting, coking, refractories, machine repair, power, and transportation. The production unit has a total of 217,000 employees, capable of smelting more than 800 steel types and rolling more than 600 steel types. The characteristics of Benxi Iron are: large iron ore reserves, easy mining, and excellent quality. The smelting and casting pig iron with it has the best quality in the country, low phosphorus and low sulfur, and is known as "ginseng iron".

Steel bases in Beijing, Tianjin and Tang

Including the Capital Iron and Steel Company, Tianjin Steel Plants and Tangshan Iron and Steel Company, it is one of the important iron and steel bases in the country. The output of major steel products accounts for about 10% of the total national output. Among them, the output of finished steel products accounted for 13% of the country's total steel output. The favorable conditions of the Beijing-Tianjin-Tangshan Iron and Steel Base are: The resources around the base are abundant. The Jidong Iron Ore Base has large iron ore mines such as Qian'an and Yixian, and its reserves are second only to Anben. There are large coal fields such as Kailuan and Jingxi. Kailuan Coal Mine has an annual output of more than 20 million tons, which is the largest high-quality coking coal base in China. The base is well-positioned, the traffic is developed, and the necessary roads for internal and external connections are covered. Railways and highways extend in all directions. There are important seaports such as Tianjin and Qinhuangdao. The base is close to the consumer area and has strong technical force. Beijing is the political and cultural center of China, Tianjin is the largest port city in the north, the economic center of North China, and Tangshan is an important industrial city in Hebei Province. The three cities rely on each other and are closely connected, becoming one of the important economic regions in northern China and also a major consumer of the steel industry. Looking at the base as a whole, the mining, smelting and rolling capacity is roughly balanced.

Shougang is the largest iron and steel joint enterprise in Beijing, Tianjin, and Tang Dynasty. After nearly a decade of reconstruction and expansion, it has formed a supporting capacity of 3 million tons, which has changed the imbalance of pig iron output over steel output and steel output over steel. In 1990, 3.75 million tons of iron, 4.35 million tons of steel, and 3.74 million tons of finished steel were produced. Shougang has advanced technology and various economic indicators have maintained domestic advanced levels.

The steel mills in Tianjin are mainly steelmaking and rolling. The ironmaking base is located in Shexian County, southern tip of Hebei, and is more than 500 kilometers away from Tianjin. Every year, nearly one million tons of pig iron is also imported from outside the country for chemical steelmaking. A large number of steel billets are also transferred for rolling billets, which causes unreasonable conditions such as round-trip transportation and waste of energy. Tianjin has a variety of steel products, mainly small and medium-sized steel and metal products.

Similar to Tianjin, Tangshan Iron & Steel has established an ironmaking base in Xuanhua, Hebei, mainly in steelmaking and rolling. During the "Seventh Five-Year Plan" period, Tangshan Iron & Steel added 750,000 tons of pig iron production capacity, 1.72 million tons of raw ore processing capacity, 850,000 tons of continuous casting capacity and 350,000 tons of rolled steel capacity. The continuous casting production capacity was from 50,000 tons at the end of the "Sixth Five-Year" period. , Increased to 900,000 tons, and the continuous casting ratio also increased from 4.21% to 43.96%.

Shanghai Steel Base

It has three major steel-making enterprises, Meishan Metallurgical Company and more than ten rolling mills in Baosteel and Shanghai Steel's No. 1, No. 3 and No. 5 plants, and its production scale in 1990 is second only to Anben Iron and Steel Base. In 1990, the output of pig iron was 5.269 million tons, steel was 8.418 million tons, and finished steel was 6.0958 million tons. Pig iron, steel, and steel products accounted for 8.4%, 13.5%, and 11.8% of the country's total output, respectively. Shanghai Steel, where the Shanghai Iron and Steel Base is located, has developed industries, good production cooperation conditions, strong technical force, high management level, and convenient land and water transportation. This is the most favorable condition for the base. However, Shanghai has no iron, coal, or auxiliary materials, and it needs to import millions of tons of pig iron and coke every year. In the late 1960s and early 1970s, an ironmaking base was established in Nanjing Meishan. In 1990, the steel varieties and profit margins of the Shanghai Iron and Steel Base ranked first in the country. Proper use of imported ore to produce high-quality, cutting-edge products is the main direction of Shanghai Iron and Steel Base.

Baosteel is China's first modern large-scale steel joint venture with world advanced level. The first phase of the project was put into production at the end of 1985. In April 1992, the second phase of Baosteel was completed. After the second phase of the project is officially put into operation, it will form an annual output of 6.5 million tons of iron, 6.71 million tons of steel, 4 million tons of hot-rolled coils, 2.1 million tons of cold-rolled coils, 500,000 tons of seamless steel pipes and 2.6 million tons of commercial steel billets. Comprehensive production capacity.

Compared with other existing steel enterprises in China, Baosteel has the outstanding advantages of large-scale equipment and high degree of automation. It has a 4063 cubic meter blast furnace, a 30O ton oxygen top-blown converter, a 450 square meter sintering machine and a 135mm mill. It is currently the largest of its kind in the domestic steel industry. 6 meters coke oven and 140 cm seamless The steel tube rolling mill is currently the most advanced in China. After the completion of Baosteel, there will be a lot of products to fill the gaps in the short-term or short-term product varieties of China's steel industry. Baosteel's out-of-factory transportation is mainly water transportation, which accounts for 80% of the transportation volume. The in-plant transportation is mainly based on belt conveyors. It has a relatively complete automatic control system. This is rare in domestic similar enterprises.

Wuhan Iron and Steel Base

WISCO is located along the Yangtze River in the Qingshan District of Wuchang. It is a large-scale steel industry base built in China after 1949. Comprehensive production capacity of 6 million tons of ironmaking, 5 million tons of steelmaking, 4 million tons of hot rolling, 1.22 million tons of cold rolling, and 190,000 tons of silicon steel sheet has been formed. The main products are: medium section, thin plate, medium and heavy plate, large steel, strip steel, etc., which is the largest steel plate production base in China.

Wuhan Iron and Steel has a superior geographical location, convenient water and land transportation, and the plant area is flat and wide, close to the consumer area. Edong Iron Mine is the main ore-producing area of WISCO. The ore produced is of high grade and contains beneficial components such as copper. However, limited reserves and deep burial are the limiting factors for the further development of WISCO. In the future, we can consider the use of the Yangtze River waterway to properly import some of the rich ore to fully utilize the production capacity of the 1.7 mill.

Panzhihua Base

Located in Dukou City, Sichuan Province, it was built during the "three-five years" period and is the largest iron and steel joint venture behind China's strategy. The Pan (Zhihua) West (Chang) area where Pan Steel is located contains extremely rich vanadium and titanium magnetite. The reserves of vanadium and titanium rank first in the world, and more than ten rare metal elements such as cobalt, nickel, copper, and manganese coexist with it The reserves are also amazing. There are also huge hydropower and coke resources, which provide conditions for the development of the steel industry.

In 1974, the first phase of Panzhihua Iron and Steel was completed, forming an annual production capacity of 1.7 million tons of iron, 1.5 million tons of steel and 1.1 million tons of steel. The largest vanadium extraction workshop in China was completed in 1977, and it has reached the world advanced level in the comprehensive utilization technology of vanadium extraction. In 1979, China's first titanium test plant with an annual output of 50,000 tons was completed. In 1990, 2.29 million tons of iron, 1.91 million tons of steel, and 780,000 tons of finished steel were produced. The main products are pig iron, billets, vanadium slag, heavy rails, large steels, small steels, and wires. The output of vanadium slag increased from 15,000 tons in 1977 to 340,000 tons. In 1990, 85% of the country's vanadium slag was supplied by Pangang, and it was shipped to Britain, France, Germany, the United States, India and other countries.

Panzhihua Iron and Steel Co., Ltd. is located in Nongping, which is between the iron ore production area and Baoding Coal Mine. It is about 10 kilometers away from coal and iron, and is connected by railway. Nongping is surrounded by the meander of the Jinsha River, surrounded by water on three sides, and has an area of only 2.6 square kilometers. The small site area has become an important limiting factor for the further expansion of Pangang. In 1990, the second phase project of Panzhihua Iron & Steel was planned to be constructed. After the completion of the second phase of the project, the annual output of pig iron, steel and steel products will reach 3 million tons, 2.7 million tons and 2.2 million tons, respectively. In view of the narrow area of Nongping, it is planned to build a second base in Lizhuang or other areas of Yibin City.

Baotou Steel Base

Baosteel is located on the banks of the Kundulun River in the new district of Baotou, Inner Mongolia, and is one of the key national construction projects during the first five-year plan period in China. Officially put into production during the second five-year plan. Baosteel base is near iron and coal. The ore base is in Baiyun Ebo, only 150 kilometers south of the plant area, and the Baobai Railway and highway meet. About 80 kilometers northeast of the plant area is Shiguaigou Coal Mine. Baotou Steel is close to the Yellow River and has a flat terrain and good water conditions. In 1990, 2.51 million tons of iron, 2.52 million tons of steel and 1.53 million tons of steel were produced. Baotou Iron and Steel Company is not only a large-scale iron and steel joint enterprise in China, but also the main rare earth production base in China. Baotou Mine has huge rare-earth resource mines, its reserves rank first in the world, and it is known as the "hometown of rare earths".

Taiyuan Iron and Steel Base

TISCO is located in Jiancao, Taiyuan City, Shanxi Province. It is one of the key expansion and reconstruction projects during the Second Five-Year Plan period. In 1990, 1.33 million tons of iron, 1.79 million tons of steel and 960,000 tons of steel were produced. There are abundant coking coal resources and complete varieties around TISCO, which is the outstanding advantage of TISCO's layout. The Tai (original) ancient (cross) Lan (county) iron ore is one of the main iron ore areas in China; however, the ore grade is low and the mining areas are scattered. Insufficient water resources, tight transportation and defects in iron ore resources are the limiting factors for TISCO's further development.

TISCO is also a special steel production base in China, which mainly produces high-quality plates.

Maanshan Base

Masteel is located in Ma'anshan City in the east of Anhui Province. It is near the river and has convenient transportation and abundant resources. The nearby Ningwu iron mine is one of the main iron ore producing areas in China, not far from Huainan and Huaibei coal producing areas. The main products are various cast irons for casting, train wheels for railway transportation, wheel rims, ring parts with various special sections, various angle steels, and small and medium steels. The output of pig iron is greater than that of steel. In 1990, it produced 2.23 million tons of iron, 2.04 million tons of steel, and 1.54 million tons of steel. It is an important pig iron base in Jiangnan.

Chongqing Iron and Steel Base

Including Chongqing Iron and Steel Company and Chongqing Special Steel Plant. Chongqing Iron and Steel Company is located in the Dadukou District of Chongqing City. Its predecessor was formed by the former Hanyang Arsenal, Liuhegou Iron Mine, and some of the Shanghai Iron and Steel Plant. After more than 40 years of construction since the founding of New China, a steel complex with considerable scale and comprehensive production capacity has been formed. In 1990, 1 million tons of iron, 830,000 tons of steel, and 830,000 tons of steel were produced. Chongqing Special Steel Plant is located in the Shuangbei area of Shapingba. Founded in 1935, Chongqing Special Steel Plant is the earliest steel enterprise in the southwest. After 1949, it has been expanded many times and has become an important manufacturer of precision steel and other special steels in China.

Taiwan China Company

The iron and steel industry in Taiwan Province of China was set up by vigorously developing the shipbreaking industry in the absence of coal and iron. In the 1960s, Taiwan used the dismantling of old ship plates to produce steel, and used scrap steel to produce electric furnace steel. In the 1970s, Taiwan's annual shipbreaking volume accounted for more than 60% of the world's total shipbreaking capacity, and its annual shipbreaking capacity reached 2 million tons. In order to further meet the needs of Taiwan's local production and development, the Taiwan authorities decided to build a large steel plant with an annual output of 6 million tons of steel in Kaohsiung, and named it China Iron and Steel Corporation. The iron ore, coking coal and main raw materials of the plant are all imported from Kaohsiung Dagang. Taiwan Province produced 2.998 million tons of steel in 1990.