Information Engineering Student Steel Company Internship Report

Internship time: October 14th to October 27th

Internship location: Shijiazhuang Iron and Steel Co., Ltd.

Professional: Electrical Automation

Class: Electrical Class 2

Intern school instructor: all teachers in the automation teaching and research section,

Internship Objectives: To improve students' ability to analyze problems, solve problems, adapt to society, enhance students' professional awareness, labor report views, improve political thinking, expand careers, and consolidate theoretical knowledge; Lack of practical teaching links. Understanding the internship is an important part of the teaching work. This internship is a practical training in completing the basic course and some professional courses. Through the internship to understand the working environment of the factory; understand the role and status of the profession in the work, familiar with the work that the graduates of the profession may be engaged in in the industrial and mining enterprises, have a clear understanding of the practical value of the professional courses they have studied; The detection components, control equipment and various production machinery, understand the level and wiring of the factory automatic control equipment. At the same time, through the internship, the students have the opportunity to contact the on-site personnel more extensively and learn the provincial capital, so that the students can get a good harvest of business and ideas.

Internship content: a safety education 1, the purpose of safety education learning: 2, the occurrence of accidents and its prevention: 1, the factors of accidents, human factors - the factors of unsafe behavior - unsafe factors 2, the occurrence of accidents Factor 1), management factors; 2), violations: a, wrong operation b, illegal operation c, ruthless 3), poor security responsibility. 3, the main safety precautions into the factory i, fire and explosion-proof ii, dust and anti-virus iii, prevent burns and iv, prevent electric shock v, prevent mechanical damage vi, prevent high-altitude vii, prevent vehicle damage viii, prevent hoisting machinery damage ix, Prevent objects from being hit 10. Do not drink alcohol in the pre-class class.

Second, the relevant content: through the ten-day study tour of the steel mill and access to relevant information, preliminary understanding of the classification of steel and the process of steelmaking. (1) Classification of steel products: 1. According to chemical composition

Carbon steel alloy steel

2, according to smelting equipment

Converter steel flat furnace steel electric furnace steel

3, according to the degree of deoxidation before pouring

Boiling steel killed steel semi-killed steel

4, according to the quality of steel

Ordinary steel high quality steel high quality steel

5, according to the use of steel

Structural steel, mechanical steel, structural steel, special steel, special steel

6, according to the form of manufacturing processing

Cast steel forged steel hot rolled steel cold rolled steel cold drawn steel

Shigang is the largest production base of high-quality carbon structural steel and alloy structural steel in the country, with an annual production capacity of 2 million tons of timber.

Main product structure: high quality carbon structural steel, alloy structural steel, gear steel, bearing steel, low alloy high strength structural steel, tube blank, etc. Widely used in automotive locomotive parts, engineering machinery, machining, hardware tools and other industries.

(II) Steelmaking process: In the face of scarcity of resources and energy, Shijiazhuang Iron and Steel Co., Ltd. has invested a large amount of funds to transform the steel manufacturing process since the “Ninth Five-Year Plan”, and to treat the emissions harmlessly and resourcefully. At present, Shigang's comprehensive energy consumption per ton of steel is 72 kilograms lower than the national average. Through the recycling of emissions, it has won an environmental benefit of 140 million yuan per year.

In order to reduce the loss of resources and energy, Shigang has invested heavily in the formation and improvement of the short-process production line of “raw material-sintering-ironmaking-converter steelmaking-lf refining-vd finishing steel”, forming “steel making, refining and continuous casting”. The continuous four-in-one process, continuous casting ratio, continuous rolling ratio reached 100%, 80% or more. In the optimization process, Shigang has eliminated 24 square meters of small sintering machine, 150 cubic meters of small blast furnace, 60 tons of pit-type converter and other high energy consumption, heavy pollution, low efficiency technical equipment, and added 50 tons of top and bottom composite Blowing converters, continuous automatic rolling mills, and updating more than 90% of technical equipment. In addition, Shigang also actively adopts a number of energy-saving and consumption-reducing technologies such as blast furnace concentrated phase conveying and blowing coal powder, iron-making dry cloth dust removal, automatic steel making and continuous casting steel, which greatly reduces the resource consumption level. Through the intensification of production processes and the elimination of outdated equipment, Shigang has improved resource utilization. Shigang has invested in environmental protection funds and fundamentally controlled pollutant emissions. Shigang combines environmental treatment with waste-free and resource-recycling treatment to achieve comprehensive utilization of water, gas and slag resources, and transforms “three wastes” into “three treasures”: using water quality stabilization and “zero” emission technologies, The process circulating water system was reformed to make the water recycling rate of the whole company reach over 94%, the compliance rate of wastewater treatment and the compliance rate of discharged wastewater reached 100%, and the consumption of new water per ton of steel was 3.8 cubic meters, which is higher than the national average steel consumption per ton. The water consumption is 9.9 cubic meters; the recovery rate of converter gas and blast furnace gas is increased to maximize the production. At present, the recovery rate of blast furnace gas is 100%, and the recovery of converter gas of ton steel is more than 80 cubic meters. The building materials and iron slag are all sold to the cement plant and used as cement raw materials. The steel slag produced by steel making is used as raw material for colored pavement bricks and steel slag bricks. Through the resource treatment of the emissions, the output of Shigang Steel increased, but the dust emissions decreased, and all the pollutants reached the standard discharge.

Insufficient stone steel: In the construction of the third rolling steel production line, it is not closely combined with the converter steelmaking, which causes the steel ingot to be heated again to enter the rolling mill for rolling, resulting in waste of resources.

Power plant internship

The power plant is one of the main auxiliary production units of Shigang. Mainly responsible for the management of the electricity, oxygen, wind supply and communication telephones required for the company's production. Operation procedure of the medium-variable station of Shigang Power Plant 1) Electrical operation rules of substation 1. Non-certified electricians cannot perform electrical work. 2. Any person has the right to stop unsafe use of electricity. 3. When mechanical maintenance is performed, it should be kept away from flammable gas. 4. In places that are inflammable and explosive, it is strictly forbidden to carry out live working to prevent the arc from causing an explosion. 5. When using mobile power tools, you should turn off the power before moving. Use a qualified 3-wire grounding cable for the wire. The power supply should be protected by a leakage switch. Note that the phase and neutral wires cannot be connected in reverse, and the metal casing should be grounded reliably. 6, temporary lighting, to use low voltage power supply, based on 36 volts. 7. When working with electrical equipment with high-voltage current, wear insulated shoes and rubber gloves, and stand on the rubber board. There must be no luck. 8. Do not flush any charged body with water, such as motor, switch box, trunking, etc. 9. When there is a leakage, stop immediately, and immediately turn off the power and then go to the electrician for treatment. 10. Semi-finished oil cylinders and oil tanks must be connected to the ground grid, and the motor ground wire should be in good contact. 11. When moving the floor fan, you must turn off the power before moving the fan. 12. The marking of the power switch of each line should be accurate, and it can be disconnected immediately in the event of an accident. 13. Before using the power equipment, carefully check whether the installation of the switch, motor and mechanical equipment is correct. 14. Pay attention to the dryness of the wires. Observe the operating procedures for using electrical instruments. When leaving the room, cut off the current of the appliance heating instrument. 15. When replacing the fuse, select the qualified fuse according to the negative tea, and do not arbitrarily increase or replace it with copper wire. 2) Precautions for the operator of the power distribution room The power distribution room is the link for receiving, transforming and distributing electrical energy, and is the power hub of enterprises and institutions.

Internship experience

The ten-day internship life is over, and every day in Shigang is still vivid, which makes me unforgettable. Indeed, this internship is the first time we have gone out of school to really do the project, which is of great significance to our students who are not born, and we feel the arduous responsibility. Similarly, this internship allowed us to truly experience life and understand life, and we also felt a lot. Internship life is actually another way of learning, which is what we can't learn in textbooks. Through the study of the relevant knowledge in the freshman year, we can only understand the concept of electrical automation in theory, and can only understand the related concepts of electrical control in a one-sided manner. However, it is this internship that gives us a new understanding of electricity in our minds. We have a new framework that allows us to combine theory with practice and apply what we have learned to practice. Moreover, the theoretical knowledge and practical experience are fully complemented and integrated. In the process of internship, accumulate experience little by little, explore and think little by little, and gradually understand the basic principles and methods of electrical control. I think this is the meaning of our internship, the purpose of the internship. Through this internship, I have learned a lot of knowledge that I didn't understand before. This undoubtedly has an understanding of the future work, and also laid a certain foundation for future measurement practice, and more importantly, accumulated valuable experience for future work. Although this internship life is over, it is a very meaningful experience in my life. Again, this internship is rare. I hope that there will be such an opportunity in the future. Under the guidance of the teacher, let us more contact with the society, more practice our will in practice, exercise our physique, and improve our ability.

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