This paper summarizes the effects of rare earth on steel, puts forward a definition of rare earth microalloyed steel, comparatively analysis different rare earth adding processes. The study shows that the process of feeding cladded rare earth wire into mould is currently the most reasonable adding process for rare earth microalloyed steel production.

In the paper, the main factors influencing the effect of dedusting are obtained through the exploration in dedusting effect of coal charging for the top coal coke oven JN60 in Baotou Steel, and the effective measures to improve the operation effect of coal charging dedusting are put forward. Coal dusts are eliminated during the process of coal charging in coke oven through the improvement of dedusting equipment and optimization of operation management, achieving a good effect, providing a technical reference for the same type of coke oven.

Due to the constraints in the production process of mining system, the raw materials used in the lime kiln are sometimes insufficient. By expanding the particle size range of the raw materials, the most suitable raw material particle size ratio is found. Practice of grading calcination is applied on the two production lines to ensure the yield and quality of the lime kiln, receiving better results.

The SULTAN series of high-energy sound wave level meter can penetrate dust, steam, foam or other interference objects, and its measurement can be continuous, accurate and stable under the harsh condition of coking. In the paper, its application in rare earth steel coking project of Baotou Steel is introduced, and the energy loss in acoustic wave propagation can be reduced and the intensity of reflected echo can be ensured by applying low frequency technology. Advanced echo processing technology and unique low-frequency processing technology making it has a strong ability to identify the echo, which can greatly improve the accuracy of scene level detection, reduce the accident rate of automatic control operation and ensure the normal production.

Furnace condition of 4 150m³ blast furnace in Baotou Steel disorders by the impact of equipment accidents after blow-in. Through analysis, the main reason is the hearth deposition and the thickness in middle part of stack which caused by the long-term slow blast and continuous damping down. The furnace condition can be restored by raising the temperature of the furnace, stabilizing the blast volume, using the charging system of the open center and the stable edge, adjusting the water and water temperature in the middle part.

According to the mechanism of phosphorus reduction in the process of blast furnace smelting, and the existence favorable conditions for phosphorus reduction in blast furnace, it is analyzed from the aspects of current hot metal in Baotou Steel and phosphorus levels of crude fuel etc. By measuring and improving raw material structure into the blast furnace, regulating furnace temperature and other measures to reduce w [P] in hot metal, so as to meet the requirement of smelting bainite steel.

Nitrogen is a kind of harmful element for most steel grade, and the precipitation of nitrides seriously affects the various performance of steel. In the paper, based on the analysis for the nitrogen solubility change in the process of converter smelting, and through optimizing the converter charging system, bottom blown pattern, slagging system, end point control system and alloying system of tapping deoxidation, can effectively control w [N] of molten steel in the process of converter smelting. After the tapping of converter, the average w [N] is reduced from 29.4 × 10^-6 to 20.2 × 10^-6 after the process optimization, which is a good foundation for smelting low nitrogen steel.

In the paper, it is introduced the effect of hydrogen on the steel quality and the damage to bainite steel. Through the actual production test data, it is studied the source of hydrogen in steel and w [H] during the process of bainite steel smelting in 150 t converter of Baotou Steel. And the measures and effects to effectively control w [H] in bainitic steel are put forward.

In the paper, present situation of truck static lode is expounded and the significance of improving the static load of truck is introduced, meanwhile the factors affecting the static load of truck are analyzed in detail. Combining the present situation of Baotou Steel, the corresponding improvement measures are put forward, which can provide reference for further improving the static load of truck and saving transportation resources.

R260Mn steel is a kind of heavy rail steel grade which can be used in the production of high speed railway in European Railway Standard, the main technical indexes include:Rm≥880MPa, elongation≥10%, HB hardness range of tread center 260~300, Oxide cleanliness K3≤10. Through the laboratory research, smelting composition range, production technology process and operation points of each operation for R260Mn rail make technical indexes of R260Mn rail for industrial production to meet the contract requirements.

According to the general technical requirements of EU standard for low-alloy high-tensile structural steel S355J0, by using the advanced equipment in Rare Earth Steel Plate Plant of Baotou Steel, through designing reasonable chemical components and developing appropriate production technology, and each quality index of the trial products meet customer requirements. Successfully enter international market through user trial and get the praises from users.

In the paper, it is expounded the influence of the control points for steelmaking raw and auxiliary materials, converter smelting, ladle refining and continuous casting process on the cleanliness of SWRH82B steel, which based on the steelmaking production practice of SWRH82B using billet process of Baotou Steel. Through practice shows that this technology can improve the steel cleanliness of SWRH82B high-carbon hard wire steel and meet the drawing requirements of users.

In the paper, it is introduced production status for hot rolled coil of 22 mm X80 pipeline steel which are trial produced in 2 250 mm hot rolling production line of Baotou Steel. High strength and toughness X80 pipeline steel hot rolled coil with acicular ferrite are produced by using the design of alloying composition of low carbon, high w [Mn+Nb], w [Mo+ Cr+Cu], applying smelting technology of clean steel in Baotou Steel, heating technology of differentiation, constant speed rolling technology and cooling control technology of efficient encryption laminar flow. The strength and toughness index of the coil meets the requirements.

The high strength steel Q550D used in engineering machinery was developed by composition optimization and rolling process optimization in Baotou Steel. The welding performance of Q550D high strength steel was analyzed by the maximum hardness in heat affected zone, the implant test and the Y-slit type cracking test, and the results show that: The highest hardness (HV10) for heat affected zone of Q550D steel plate is 297. The result of implant test shows that under the condition of moderate restraint, Q550D steel plate with 20 mm thickness was welded by HS-70 welding stick, there is no crack without preheating. At the same time, the Y-slit type cracking test shows that under the condition of no preheating to weld Q550D steel plate with 20 mm thickness, the surface crack rate and the cross section crack rate of the two groups of samples are zero.

In order to meet the demand of automobile industry and home appliance industry for ultra low carbon steel deep drawing performance, expand the varieties and improve the quality of steel products, make technical reserves for development and trail production of ultra deep drawing steel in cold rolling production line, Inner Mongolia Rare Earth Steel Plate Co. of Baotou Steel is developing and trail producing hot rolling material of ultra deep drawing steel DC04. By adding alloying element Ti, the interstitial atom content can be controlled to make the steel pure. Using high temperature finish rolling and coiling process to control the precipitation and solid solution of carbides, the deep drawing raw materials with low yield strength and low yield ratio can be obtained to meet the requirements of the downstream process.

In this paper, it introduces the principle of hydrogen decrepitation reaction, the production process, the advantages over traditional process for NdFeB alloy strip, and the factors that can influence it. The effects of hydrogen decrepitation process and traditional process on the properties and structure of the magnets are compared. It expounds and analyzes the importance of the technology of hydrogen decrepitation and jet milling in the current production process of NdFeB magnets.

In order to quantitatively describe the physical elbow erosion of high pressure reinjection pipeline caused by changes of fluid velocity and direction, taking the high pressure reinjection pipeline of NGPD (northwest of Sichuan gas production district) as an example, Fluent software is used to establish a vertical elbow erosion model, the residual strength of corresponding elbow is evaluated and studied by using API579 criterion. The result shows that the maximum erosion rate occurs on the outer wall of elbow pipe. Meanwhile, according to numerical simulation calculation, the control parameters are optimized by the genetic algorithm. In view of the fact that the scale of the pipeline inner wall cannot be measured accurately, a set of relatively complete evaluation and optimization analysis system is established.

Cooling system is a very important part of the electric drive wheel mining truck, this paper aims to introduce a new cooling system for electric drive wheel mining truck, including its structure, principle, cooling airflow, and the design of main generator. It summarizes the advantages of the new cooling system, and provides a new design method for the cooling system of the electric drive wheel mining truck.

Blast furnace pulverized coal injection is an important technology in modern ironmaking process. Improving the level of coal injection is an important technical measure to reduce the coke ratio and production cost of iron and steel enterprises. In this paper, it summarizes the development trend of blast furnace coal injection technology, analyzes the process of automatic control for blast furnace pulverized coal injection, and describes the combination of Schneider Quantum and Xining Special Steel blast furnace new coal injection technology.

In this paper, the A7VDR bent-axis axial piston pump is taken as an example to analyze its structural composition and constant pressure control principle. Aiming at the actual operation method in on-site debugging process, from the perspective of power transfer, combined with the theory of electrical engineering, through the study of the relationship among pressure, flow and motor current of the piston pump, the principle and method for pressure regulating of the A7VDR bent-axis axial piston pump in practical application are summarized.

In this paper, it analyzes the functional diversity of the visualization mini type system composed of Smart700IE touch screen, S7-200PLC and MM440 inverter, and the high cost performance of the hardware, by setting up of the communication connect, inverter parameters, basic programming and configuration to realize a variety of basic control function, and explain the quick application methods of this mini type system, supplying an example for the engineers who first use this system.

In this paper, it introduces a real-time detection system of flammable gases that collects real-time gas concentration in the air by the flammable gas sensors installed in rolling plant, and transfers the data to microcontroller for completing its analysis and processing. When the flammable gas concentration exceeds the standard value, the information will be sent to the user's mobile phone to achieve online monitoring and alarming function. The mobile phone of Android operating system is used to develop the workshop environment monitoring software in this design. After many times of debugging and verification, this development can be a good detection of methane, carbon monoxide and other flammable gases.

This research is based on the gradient heating mode of ANSYS software APDL language to study the structure stress of the whole warehouse. This paper shows the finite element analysis result of portal steel frame structure with different connections in fire. There are two ways to analysis the connection between beam and column: rigid connection and pin joint. The overall deformation of pin joint is larger than that of rigid connection, while the equivalent stress suffered by the dangerous parts in rigid structure is larger than that of pin structure.

In this paper, it introduces the transportation and construction method of installation for large steel box girder of the expressway overpass connecting Ordos Kang Bashi-Airport expressway and Baotou-Maoming Expressway, puts forward the solutions to construction difficulties caused by factors such as site, road surface, overhead lines, and provides reference for the similar bridge construction operation in the future.

Establish the model of relationship between gas volume, steam volume and generating capacity through the use of linear regression method to measure and calculate the spontaneous electric quantity of Baotou Steel accurately. In order to provide the data support for the calculation of purchased electricity, ensure the enterprises to enjoy the preferential policies in the Inner Mongolia electric power multilateral trading market, and reduce the cost of electricity in company.

In this paper, it discusses a solar heating project in the assembly manufacturing industrial zone of Qingshan District, Baotou, Inner Mongolia. The current situation of domestic heating and the feasibility of solar central heating are sketched, the system content and operation mode of this project are expounded. In comparison with the energy consumption of the district boiler house, it is obvious that the solar central heating has remarkable effect on energy saving. It plays a positive role in guiding the popularization and development of solar central heating.

In this article, combined with practical works, it discusses the necessity, content and specific effective methods of internal bidding supervision, aims to promote the construction of clean and honest administration within the enterprise through the basic functions of internal bidding supervision and administration to ensure the openness, fairness and impartiality of bidding activities.

In this paper, based on the author's years of experience in teaching T-Arch Software, aiming at the current situation of T-Arch Software course in higher vocational colleges, the necessity of curriculum reform is put forward. According to the characteristics of the course, the teaching content, teaching methods and curriculum consolidation methods are reformed, and has obtained good teaching effect through teaching practice.

In this paper, it intends to analyze the current situation of enterprise information service provided by domestic libraries, find out the problems and shortcomings in enterprise information service, and put forward the ways and measures to deepen the enterprise information service in combination with the scientific research practice of the Rare Earth Research Institute library, in order to provide reference for enhancing the information service ability of the library for enterprise technical innovation.