Steel Plant Production Internship Summary Sample

The road is long and long, and I will search up and down. The road to be built is long and difficult, so we must work hard to achieve our goals. Since I am a disciple of metallurgy, I should not have any other ambitions. I am determined to do my best, be humble and forward-thinking, and study metallurgy.

The arrival of the summer vacation in 2010 also marked the end of my junior year of study. The summer production internship at this time of year slowly begins with the end of the final exam.

1. Internship background (internship purpose, internship requirements, internship location, internship start and end time)

(1) Internship start and end time, location: This professional production internship of my class is a self- It was conducted at Xuanhua Iron and Steel Co., Ltd. from July 19, 2010 to August 4, 2010. Two teachers from the college, Guo Hongwei and Huang Fuxiang, led a team to inspect the Xuanhua Iron and Steel Raw Materials Plant, Ironmaking Area, Steelmaking Area, Continuous Casting Area, They visited the mold rod factory and Xuanlong Company’s high-line production area and other major factory production lines to visit and study.

(2) Purpose of internship: The production internship at Hebei Xuanhua Iron and Steel Group Co., Ltd. is to complete the internship in understanding the steel metallurgical production process and technology, and to learn metallurgy, transmission principles and Conducted on the basis of Iron and Steel Metallurgy (I, II). The purpose of this production internship is to organize students to participate in professional production activities: to train students to further learn practical knowledge of production technology, consolidate and deepen the professional and basic theoretical knowledge learned; to train and improve students' learning and mastery of production-oriented and in-depth practical knowledge Methods for investigating and researching actual production problems; cultivating and improving students' ability to combine learning theory with practical analysis to solve problems and the ability to work independently; cultivating students to learn on-site management knowledge in production, technology, quality control, labor, economics and other aspects, and enhance Learn economic and management perspectives; strengthen and strengthen students' thoughts and perspectives on studying hard for the construction of the four modernizations and facing the front line of production.

(3) Internship requirements: In order to achieve these goals, as students, we must take the initiative to learn according to the internship outline and achieve the following aspects: Participate in various production activities in professional production positions, including necessary labor , Understand and be familiar with professional production processes and corresponding operating procedures, learn from the actual operating experience of workers and engineering technicians, and master operating essentials; Understand and be familiar with the main equipment of the production process, its working principles and performance, main process parameters and indicators; Through investigation and research, discuss with workers and engineering technicians to understand the advanced experience gained in production, existing weak links, technical measures and development prospects; understand the production organization, product costs and production economic effects of steel production; under the guidance of teachers Carry out in-depth investigation and research on certain topics based on the specific conditions of the internship factory, and prepare materials for course design; carefully write a written internship report.

2. Internship environment (full name of the internship unit, address, nature, scale, introduction of the internship unit, department, main work of the department, arrangement of instructors, etc.)

Production in this trip The internship location is at Xuanhua Iron and Steel Group Co., Ltd. in Hebei Province. Xuan Steel is located in Xuanhua, an ancient historical and cultural city outside the Great Wall, 150 kilometers east of Beijing. The factory is close to the Beijing-Baotou Railway and the Beijing-Zhangjiakou Expressway. It has developed transportation, convenient communications, and rich local mineral resources. , is the Hebei Iron and Steel Group officially established on June 30, 2008 (Tangshan Steel, Handan Iron and Steel, Xuangang, Chenggang, Wugang, Mining, Guomao, Caida Securities, Hengban, Jingtang and other 10 wholly-owned or Holding subsidiaries), it is a key large-scale state-owned enterprise in the country.

The existing total assets are 13.9 billion yuan and there are 21,000 employees. The group company has 10 main steel production plants and 12 auxiliary production units including mining, coking, ironmaking, steelmaking, steel rolling, power, and transportation.

The main production equipment has 6 blast furnaces: 5#, 6#, 7# blast furnaces 500m3, 8# blast furnace 1350 m3, 9# blast furnace 1800 m3, 10#, 11# blast furnaces 2500 m3; 6 converters: 1#, 2#, 3# converter 30t, 4#, 5# converter 110t, 6# converter 150t; 6 continuous casting machines; 2 JN60-6 coke ovens, 2 JN60-82 coke ovens, 2 JN43-804 coke ovens And the fully negative pressure recovery coking by-product facilities introduced from Germany; the sintering machines currently used for production mainly include two 360m2 specifications; 2 8m2 shaft furnaces, 2 10m2 shaft furnaces; 2 small steel rolling steel production lines, 2 strip steel production lines, 1 bar production line, 2 high-speed wire rod production lines, 3 welded pipe production lines, 1 medium-section continuous rolling production line, 1 high-strength bar production line; 1 25000m3/h oxygen generator, 15000m3 /h oxygen generators, 1 10000m3/h oxygen generator, 3 5000m3/h oxygen generators, 3 6000KW generator sets, and 3 TRT generator sets. Xuangang's main products include wire rods, bars, small bars, profiles, hot-rolled strips, welded pipes, etc. During the "Eleventh Five-Year Plan" period, Xuangang will focus on optimizing the variety structure and improving product quality, comprehensively develop circular economy, and build Xuangang into a modern enterprise that is capital-saving, environmentally friendly, has high product added value, and is able to withstand market risks. The steel joint enterprise has become an important high-quality structural steel base in North China.

The main departments for our internship are the iron area of ??the ironmaking plant of Xuanhua Steel Plant, the burning area of ??the ironmaking plant, the pelletizing area of ??the ironmaking plant, the raw material yard of the ironmaking plant, the converter area and the continuous casting area of ??the steelmaking plant. , refining area, coking plant area, Xuanlong Company, molding rod plant area. The iron area of ??the iron smelting plant is mainly responsible for sending iron ore raw materials and other additives into the blast furnace to produce molten iron (for subsequent steelmaking). What the teacher in this department arranged for us to do was to visit the blast furnace and its ancillary equipment, understand the blast furnace feeding and tapping process, and objectively understand the important parameters involved in the blast furnace smelting process (the data that the blast furnace foreman is concerned about, how to judge hanging materials, Material ruler curve, blast furnace forward movement, factors affecting the quality of hot metal products, distribution process and distribution matrix, coke batch, ore batch, feeding system, pig iron production cost composition, etc.). The sintering area of ??the iron smelting plant is mainly responsible for preparing the iron ore raw materials and sintering them into qualified sinter on the sintering trolley. The tasks that we need to complete during our internship are to understand the sintering equipment, be familiar with the various sintering processes and the parameters to be controlled during sintering. The pelletizing area of ??the iron smelting plant is responsible for producing pellets with up to standard strength, which are used to produce molten iron with sinter and used as coolant. The internship task we have to complete is to be familiar with the pellet production process and understand the various equipment used in pellet manufacturing. Working principle, specifications and parameters. In the raw material yard of the iron smelting plant, purchased and local iron ore raw materials of different tastes are stacked and then mixed in the mixing bin and sent to the subsequent iron ore powder for briquetting. As interns, we need to understand the iron ore powder grade of Xuangang Iron and Steel, the working process of the raw material yard, the working principle of the equipment and detailed specifications (such as stackers and reclaimers, dumpers, belt transportation, etc.). The converter area of ??the steelmaking plant is a crucial link in determining the quality of steel products. The converter is mainly used for decarburization, dephosphorization, heating, and refining molten iron into molten steel. During the internship, in addition to understanding Xuangang's converter specifications, the converter steelmaking production process, and the adding methods and amounts of various bulk materials and additives, we also needed to understand the temperature and composition changes of molten iron before and after steelmaking. Continuous casting is the process of solidifying molten steel into a solid billet of specific shape. What we have to do is to combine the more abstract knowledge learned in books with on-site continuous casting equipment and continuous casting processes through internships, so as to deepen our understanding and recognition of the corresponding professional knowledge. Refining outside the furnace is a "secondary refining" operation in steelmaking to obtain higher productivity and higher quality molten steel than primary refining. Xuangang currently only has LF furnace refining equipment outside the furnace. Therefore, before the internship, the teacher assigned us the tasks of understanding the LF furnace equipment, learning the four major systems of LF furnace refining, and learning the process operations performed in LF furnace refining; finally, for the coking plant (refining coal into coke), publicity Long Company (the billet is rough rolled and finished rolled into high-speed wire), and the profile bar factory (the billet is rolled into round bars, angle steel, steel bars, etc.). In these major internship departments, due to the professional knowledge at school, To learn the particularity of the products, what we have to do is to have a general understanding of them in the production line and establish a certain understanding of them.

3. Internship content (internship process, internship content)

(1) Internship process: This summer production internship in a steel company is more intuitive than school classroom learning. This kind of active learning platform increases our perceptual understanding of iron and steel metallurgy through direct face-to-face practice at the steel plant production site. At the same time, we exercise the application of learned theoretical knowledge to analyze practical problems and cultivate the independent working ability of integrating theory with practice.

Internships not only refer to internships in steel plants, but also include internship mobilization in schools before internships, watching iron and steelmaking videos, etc. The most critical period when the internship is in full swing is when we arrive at the Xuanhua Steel Plant where the internship is located. Since the research directions of Teacher Guo Hongwei and Teacher Huang Fuxiang are in the field of ironmaking and steelmaking respectively, they jointly coordinated us during the internship process. Internship matters at Xuangang. During the internship, Teacher Guo first arranged our internship in the raw material yard, sintering area, pellet area, blast furnace area, and coking plant of the ironmaking plant, and then Teacher Huang arranged for us to work in the pretreatment desulfurization area of ??the steelmaking plant. , converter area, refining area, continuous casting area internship, and finally we visited the high-line production line of Xuangang Steel Rod Factory and Xuanlong Company. The content of the entire internship is roughly divided into the above three parts. After the internship, we returned to school safely and ended this unforgettable summer vacation trip to Xuangang Production Internship.

(2) Internship content: The internship period at Xuanhua Steel Plant is from July 19, 2010 to August 4, 2010. During the internship, I was fortunate to be one of the leaders of the internship group in my class. I was mainly responsible for informing the members of the group about internship matters, checking the attendance of the group, and leading the group to conduct production internships in an orderly manner. Prior to this, we carried out preparatory work for the internship at the school.

The first is the internship mobilization meeting on July 13, 2010 before departure. The mobilization meeting for 07-level metallurgical engineering students was held in 105 of Yifu Building of the school and was hosted by teacher Wang Fuming from the college. Teacher Wang sequentially started from (1) introducing the production internship arrangement (2) emphasizing the importance of internship safety (3) proposing the goals to be achieved and tasks that need to be completed during the internship (4) maintaining a good image as a student of the University of Science and Technology Beijing during the internship ( 5) Elaborate on the issue of internship funding and gradually expand into five aspects. After that, Teacher Yang Shishan of the college once again gave instructions on this internship. He hoped that we would practice seriously while ensuring safe internship, obey the teacher's instructions, and successfully complete the professional production internship required by this undergraduate teaching. In addition, Teacher Yang Shishan also explained some internship items that need to be prepared before the internship and the notice to watch the video of Baosteel Ironmaking and Steelmaking before the internship.

Before entering the steel company as an intern, I only had a vague understanding of steelmaking. On July 15, the college organized six classes of metallurgical engineering majors to watch videos of Baosteel's coking system, major blast furnace capacity, four major blast furnace ironmaking material balance systems, tap water, gas recovery, etc. at school. In addition, we also watched Baosteel's steelmaking production process system, rough rolling production process (steel nail soaking - rough rolling - slab cooling - billet continuous rolling - billet cooling and finishing), steel pipe production process, and hot rolling production process Process, cold rolling production process, Baosteel continuous casting new technology. This opportunity was my first exposure to steelmaking and ironmaking after taking professional courses, and it was of great help to me when I entered the steel plant internship.

On July 18, under the organization of the class cadres, all members of my class took the train from Beijing to Xuanhua. After a 4-hour drive, we arrived at our destination-Xuanhua.

Under the leadership and guidance of Teacher Guo and Teacher Huang, we are fully prepared for the internship. On July 19, the production internship really got into gear. Two teachers led us to visit Xuangang Exhibition Center and learn about the development process of Xuangang (through "going through many vicissitudes" - "strengthening" - "accumulating strength" - "leapfrog development" - "facing the future" - "honor list" ), learn about the achievements and challenges that Xuanghua Steel has made and experienced since its establishment, as well as the current production equipment structure of Xuanhua Steel Plant. After the visit, the teacher summoned the group leaders of the class to a meeting in the Xuangang Hotel conference room to discuss matters related to the internship with representatives from Xuangang’s human resources department, training department, and production departments. In the afternoon of that day, Teacher Wang Anren convened a meeting at our accommodation to explain the internship methods and safety issues to us. The first day of internship ended successfully.

The most important thing during the internship is to ensure safety. On this basis, we can learn as much professional knowledge as possible. This is the most important purpose of our trip.

On July 20, I finally got to practice on the Xuangang production line up close. In the morning, full of enthusiasm and expectation, we came to the large conference room of Xuangang Ironmaking Zone for safety training and education before visiting the blast furnace. In addition to briefly introducing the blast furnace equipment currently owned by Xuangang Iron and Steel Co., Ltd., Mr. Song from the iron smelting plant also focused on a detailed analysis of the risk factors and potential threats existing in the iron smelting plant. In addition, we also imparted practical safety knowledge to everyone by taking safety test papers. In the afternoon, our task is to visit Xuangang 10# blast furnace (capacity 2500m3). Under the leadership of Xuangang staff, we came to the 10# blast furnace conference room and listened to experienced masters teach us about the production conditions of the 10# blast furnace. In this process, I learned a lot of things that I didn't know before. The 10# blast furnace has three tapholes. The air temperature entering the blast furnace is as high as 1200°C. It adopts parallel tank type cutting. The comprehensive coke ratio is 540~550Kg/t, the coal ratio is 150~160Kg/t, and the ore material is discharged. It uses 70% sinter and 30% pellets (the comprehensive grade of the ore is about 57%). ． ． ． ． ． You don't know if you don't hear it. It's really eye-opening when you hear it. It turns out that the blast furnace is such a complicated "behemoth". Later, we came to visit the No. 10 blast furnace. The temperature next to the blast furnace was very high and the environment was relatively poor. We took a tour around the blast furnace. Under the guidance of the teacher, everyone worked in groups to closely observe the 30 tuyeres and coal injection nozzles surrounding the blast furnace, and watched the process of coal injection at the tuyeres. Although the internship is relatively difficult, I think it is a rare learning opportunity, so everyone is very motivated.

After visiting the blast furnace, we conducted an internship at the Xuanshan Iron and Steel Mine raw material yard on July 21st. The raw material yard can be said to be the starting point of a steel plant. All iron ore raw materials used in steel smelting are supplied from here. We visited the dumper - input group - stacker and reclaimer - four-material strip stacking - output group - large disc mixing Warehouse - finished product mixture pile - output group - sintering... The raw material yard realizes raw material transportation through above and below ground belts and reclaimers. Since the amount and grade of iron ore raw materials owned by Xuangang Iron and Steel Co., Ltd. are insufficient, a large amount of iron ore powder must be imported from the outside world. The main importing places are Australia, Brazil, India, Thailand, etc. These imported iron ore powder are transported to the country through equipment and firearms. Raw materials site. The quality of raw materials directly affects the agglomeration and subsequent iron-making processes, which in turn indirectly affects the quality of steel products. The master who led the team gave us careful and detailed explanations everywhere we went. Later, when we returned to the conference room, the master who led the team sorted out the day's internship for us in the form of a flow chart of the raw material yard to enhance everyone's macro understanding of the layout of the raw material yard. .

The day after visiting the raw material field (July 22), following the process of the raw material production line, the teacher led us to practice in the Xuangang sintering workshop. In the sintering workshop, the team leader of Xuangang Steel introduced to us the two sintering trolleys currently used by Xuangang Steel for production, with a negative pressure exhaust area of ??4m×85m=360m2. Some previous sintering machines with smaller exhaust areas (such as 64m2) have been discontinued. Currently, we are also considering introducing a sintering machine with a large exhaust area (550m2). During the internship, in addition to becoming familiar with the specific working principles of the sintering machine, we also learned a lot about sintering raw materials from the team leader: in addition to most of the mixture coming from the raw material yard, a small part of the sintering material comes from the blast furnace. Return to the ore; the added flux includes quicklime (mass fraction: 7%) + light burnt dolomite (mass fraction: 2.5%) + fuel + limestone, etc.; the alkalinity of the sintered ore is 2.0±0.8; the sintering yield can be as high as more than 90% . During the internship, Xuangang craftsmen emphasized to everyone that a particularly important point in sintering is that the sintering kiln uses low temperature (1260~1280℃) sintering. The reason is to avoid the decomposition of Fe2O3 caused by excessive temperature and the inability to generate composite calcium ferrite (SFCA) with good reducibility and strength. Composite calcium ferrite is a good sintering liquid phase and plays a role in the consolidation of iron ore powder. vital role.

On July 23, with new expectations, we came to the second pellet workshop of Xuangang Xuangang Ironmaking Plant for a visit and study. At the beginning of the internship, Xuangang's reception staff gave us a theoretical education on the pelletizing process, allowing everyone to grasp the pelletizing process from a macro perspective. If you don't learn, you don't know. Once you learn, you will find that your knowledge of the ball team is a negligible part. Every step of the pellet process from the fine powder silo to the drying drum to the ball mill to the pelletizing disc machine to the grate machine to the rotary kiln has a significant impact on the quality of the pellets.

In terms of the details of the pelletizing process, we have a lot to learn: the drum before pelletizing starts using countercurrent drying; the pelletizing disc is not placed flat, but tilted at 47°; the grate machine is the most critical in pelletizing. The equipment has a machine speed of 1.85~2.0m/min. The three sections of the grate machine are closely connected with the three cooling sections of the ring cooler to realize the heat circulation of the pelletizing process; the roasting temperature of the rotary kiln is approximately 1250~1300℃, and the rotation speed is 1.33r/min. Under reasonable operation of each step, the size of qualified pellets should be 10mm~16mm.

After two days of rest and adjustment on the weekend, I regained the passion I had before the internship. On July 26, with high energy, we practiced in the operation area of ??the 9# blast furnace (capacity: 1800m3), and today is the last day of internship in the ironmaking area. We came to the No. 4 Ironmaking Workshop of Xuangang Iron and Steel Co., Ltd. with full enthusiasm. The director of the 9# blast furnace warmly received us. In the conference room, the furnace director explained the situation of the 9# blast furnace, and recorded the information on the blackboard in the conference room. Regarding the various indicators and parameters of the blast furnace, we have a better understanding of the production situation of the Xuangang blast furnace. Compared with Xuangang 10# blast furnace, the 9# blast furnace is the most basic difference in capacity. In addition, there are also subtle differences in coke ratio, fuel ratio, tuyere, etc. Teacher Guo assigned us clear tasks before the internship. During the internship, we must learn from Xuangang staff (1) the heat direction of the hot blast stove (2) the combustion period, air supply period, and stuffing period of the hot blast stove. , gas flow, combustion air flow (3) The data that the blast furnace foreman is concerned about, and the judgment of hanging material (4) The factors affecting the smooth operation of the blast furnace and the quality of molten iron (5) Blast furnace distribution matrix, ore batch and coke batch, feeding system, etc. . Before the internship, the teacher arranged our internship tasks in advance, which can improve the efficiency of our internship in a very targeted way and allow us to learn more professional knowledge most directly. I think other students will also benefit from this.

If ironmaking is the "prelude" to steelmaking, then I think steelmaking can be regarded as the "sublimation" of ironmaking. So after July 27, Mr. Huang was mainly responsible for our internship in the steelmaking plant. On the 27th, we arrived at the main conference building of the steelmaking plant. Director Suo of the steelmaking plant gave us detailed safety education and training. Just like in the ironmaking area, Director Suo carefully analyzed the potential safety hazards in the steelmaking area. . The subsequent internship was led by a master machinist from the steelmaking plant. He not only introduced the production situation of Xuangang's converter, but also described the process of blast furnace hot metal in the steelmaking plant from a general perspective: blast furnace hot metal - mixing furnace - pretreatment Desulfurization station - converter - LF furnace refining... Today we visited the Mg powder tank desulfurization equipment and the iron mixing furnace. In the afternoon, we also did internships in the LF furnace main control room and LF furnace refining site. Today's internship was very fulfilling.

The converter is the core link in steelmaking. On July 28, we started our internship in the Xuangang Converter Area. I learned from the operator in the main control room that there is a complex set of operating procedures for converter steelmaking: loading molten iron and scrap steel - tilting the converter upright - lowering the gun - adding bulk materials, making slag - temperature measurement and sampling - pouring slag - discharging Steel (lasted 5 minutes) - slag splashing to protect the furnace (lasted 3 minutes) - pour out the remaining slag... During the internship, I learned that the converter gas is purified by a high-efficiency spray water-saving scrubber (wet dust removal) and then passes through a cyclone liquid wheel The dehydrator reaches the gas cabinet and then is sent to the user. The production parameters of Xuangang 4# converter are roughly as follows: oxygen supply time is 810S, furnace steel oxygen consumption is 4700m3, oxygen supply flow is 22000m3/h, molten iron addition amount is about 107t, scrap steel addition amount is 9~10t, molten iron temperature 1260℃, the gun position is 1.6m, and the amount of lime added per furnace ranges from 3280 to 3700Kg. The internship location on the 29th is still in the Xuangang converter area. Today’s internship process mainly involves learning the converter bulk material feeding system (bulk material passes through the storage bin-weighing hopper-collecting hopper-converter furnace) and watching the converter discharge on-site. steel process.

After the converter area is the internship in the continuous casting area. On July 30, the internship sites in the continuous casting area were mainly in the main control room and the continuous casting machine production site. Xuangang has 6 continuous casting machines, and the number of streams in each continuous casting machine is different. The teacher divided everyone into two groups to study in the main control room and at the continuous casting site.

In the main control room, I learned from the masters inside a lot about the process equipment and parameters of Xuangang Steel's continuous casting production: the steel consumption per ton of casting billet is about 1016t, the ladle capacity is 130~140t molten steel, and the bottom of the ladle is made of Undertaken by 2 tundishes (there are 6 immersed nozzles under each tundish, 5 of which are used for production), the steel volume of each tundish is 23~24t, the pouring temperature is 1570℃, and the tundish temperature is 1546℃ Left and right, the vibration of the crystallizer uses eccentric vibration. The inlet water temperature of the crystallizer is 39°C and the outlet water temperature is 44°C. Xuangang's continuous casting machines are all arc-shaped continuous casting machines (arc radius is 9m), and the thickness of the mold powder is average. It is 20~30mm. The protective powder in the tundish is made of carbonized rice husk. The length of the liquid core is generally 12~13m, and the metallurgical length is about 30m. The design drawing speed of the billet is 3.5~4.0m/s, and the actual drawing speed is 2.5m/min. The visit to the continuous casting site and the internship were carried out in the order of the continuous casting production process, from the ladle of molten steel - tundish - crystallizer - secondary cooling section - billet drawing - billet cutting - the finished billet enters the rolling area... Huang The teacher took our group to visit the site and very patiently explained the working principle of each device and solved everyone's doubts.

After the weekend, on August 2, our internship was transferred to Xuangang Coking Plant. Due to the limitations of the professional knowledge we are learning now, the coking part is less involved, so the teacher asked us to mainly learn the production process of the coking plant: coal transportation by coal, coal transportation by truck - coal plant - stacker and reclaimer - distribution Coal bunker - coal storage tower - coke oven - coke pushing - coke quenching - coke. Later, under the leadership of the staff of the coking plant, we visited each equipment plant in the coking process.

On August 4, our internship task was to visit Xuangang Steel Bar Factory and Xuanlong Company’s high-line production line. In the department conference room of Xuangang Steelmaking Plant, a technician from Xuangang used PPT to explain to us Xuangang’s “shaped bar factory model, bar workshop process and technical and economic indicators”. The explanation is very clear. The first part is an introduction to the bar production line in the bar workshop, and the second part is an introduction to the profile production line in the profile workshop. After coming out of the conference room, we went to the profile bar factory and visited the heating furnace, main control room, and rolling mill. We watched the process of rolling billets into round bars by the rolling mill, and passed by the angle steel and steel bar storage workshop. In the afternoon, we came to Xuanlong Company to visit the high-line production process. Xuangang High Line*** has three production lines (the first line was put into operation in 2001, with an annual product volume of 350,000 tons; the second line was put into operation in 2006, with an annual product volume of 450,000 tons; the third line was put into operation in 2008, with an annual product volume of 600,000 tons ton). Due to time constraints, we only visited the production workshop of the third line. The third line has 18 short-stress rolling mills, using a regenerative heating furnace with a heating capacity of 150t/h, an opening rolling temperature of about 1020°C, and a spinning temperature of It is about 1030℃ (depending on the steel type). The initial rolling adopts cooling rolling, and the finishing rolling adopts heating rolling. The whole rolling process takes about 70S.

IV. Summary (Internship Experience, Opinions or Suggestions)

(1) Internship Experience: During the sweltering internship period, the two teachers worked very hard and seriously for our class. During the internship, we contacted the internship unit and discussed various tedious matters about the internship. I feel that Teacher Guo and Teacher Huang have put in a lot of hard work for our summer production internship. During the internship process, Teacher Guo and Teacher Huang always implemented the principle of ensuring everyone's safety and learning as much knowledge as possible. They instilled in us safety awareness and arranged the tasks to be completed during the internship, which greatly improved the efficiency. This is what everyone has a purpose for** *See.

For those of us who are about to enter our senior year, we have already learned professional courses such as metallurgical transmission principles, metallurgical physical chemistry, metallurgy, ironmaking, steelmaking, solidification principles and continuous casting processes. We have a certain grasp of professional knowledge, but we have to ask ourselves whether we are not fully prepared to start working in a steel company or to continue doing research. Production internship is a platform to increase my knowledge of the professional field, a transition from university campus to society, and a hub for further study in this professional field.

From my own experience, I have a particularly strong feeling. This is how my junior year of study ends, and there are not many professional courses for my senior year. No matter how good my academic performance is in the past few years in college, I think it can only be regarded as a periodic short-term feedback for my efforts. suitable. The most important thing at the moment is to calm down, reposition yourself, and truly sort out and consolidate the professional knowledge you have learned before graduation.

I am a little confused about the future development trend, and I believe that a large number of other students will also have this experience. Before the internship, I knew very little about blast furnaces, converters, refining furnaces, and continuous casting equipment. After the internship, I found out that I actually knew so little about the blast furnace's feeding system, the working principle of the hot blast furnace, and how the hot blast furnace feeds the blast furnace into the blast furnace. There are no clear ideas about hot air and solutions to suspended materials in blast furnaces; there are also, for example, the operating procedures of the converter during the decarburization process, the specific operations of slag splashing to protect the furnace, the order and amount of adding bulk materials, etc. These are all It was difficult for me to really absorb the knowledge for my own use in school; the same was true for refining furnaces and continuous casting machines. The teachers kept explaining to us repeatedly in class, but without personal experience on site, I had no idea about the working conditions of these equipment. Understanding will always remain on the superficial surface, and it is difficult to analyze the problem in depth. I remember watching the tapping process of Xuangang 4# converter in the converter area. Before the internship, I would only use the word "tapping" to summarize the process. In fact, it is not such a simple thing: after passing the sampling, the slag retaining machine Install the slag retaining ball (composed of cast iron plus refractory material) and push it to the converter, then tilt the converter to pour out the molten steel (during the process of pouring the molten steel, because the carbon content is unqualified, raw carbon must be added to pull the carbon). When the molten steel is below the tapping opening Block the taphole with the slag-stopping ball (to prevent the converter slag from flowing out with the molten steel), then pour the molten steel, and finally splash the slag to protect the furnace, and then push the slag-stopping ball into the remaining slag of the converter and pour it out together. The time for placing the slag ball is also very critical. If it is placed too early, the slag ball will not be able to stay at the tap hole because the density of the slag ball is between that of the molten steel and the slag, and the slag ball will stay in the molten steel. If the time is too long, it will melt into the molten steel and affect the composition of the molten steel. If it is placed too late, too much steel will be tapped and the molten steel level will be below the tap hole, which will cause a large amount of steel slag to flow out with the molten steel. Only at the right time can it The effect can only be achieved by being able to tap steel and retain slag.

Production internship is not only a rare learning opportunity, but also a hard-earned opportunity to check for deficiencies and fill in the gaps. In the near future, we are about to move to positions like internships. Before that, we "experience" the working environment of steel companies in advance, which can increase our acceptance of workplaces in the steel field and prepare us for real work in the future. Through such a production internship, I understood the shortcomings of my only study in school. I found that I still didn't understand many things, and I didn't have a clear concept of most of the smelting data. During the internship, I was exposed to a lot of process parameters every day. Although I couldn't rely solely on this internship to master it, I found that I still learned a lot through constant repetition and learning. In addition, this internship allowed me to discover where I was lacking. Fortunately, I still have one year of undergraduate life. This year I have a clearer direction of my efforts and can make up for the gaps left in my previous studies.

(2) Some suggestions and opinions: I think this internship has a relatively wide coverage, which is very helpful to expand the horizons of our students. However, due to the limitations of the facilities and conditions of the internship site, for example, Xuangang's out-of-furnace refining only has LF furnaces, converters and blast furnaces that are not very large, so there will inevitably be certain bottlenecks in absorbing this knowledge, so in the future During the internship, it will be more helpful to expand your horizons if you can see a more complete enterprise production line in all aspects. In terms of internship arrangements, I think it would be better for our class to have teachers Guo Hongwei and Huang Fuxiang lead the internship this time. Their research fields are ironmaking and steelmaking respectively. This will help us as students gain more targeted knowledge. knowledge and improve internship effectiveness. Although Xuangang's current production equipment is not particularly complete, during this internship, we received warm reception from Xuangang and had a very pleasant and fulfilling production internship. In view of the factors of this major maintenance of Xuangang , we have to be careful and cautious, and some equipment areas can only be skipped. Although it is a bit regretful, we still understand such special circumstances.

5. Acknowledgments

I sincerely thank Xuanhua Iron and Steel Group Co., Ltd., thank the staff of Xuanhua Iron and Steel Group for their reception and help, and sincerely thank Mr. Guo Hongwei and Mr. Huang Fuxiang for their serious and responsible guidance. and led our internship, thank you to other members of our group for your help and support for so long, thank you for allowing me to have an unforgettable and fulfilling professional production internship this summer!

Thank you!