In this paper, the relatively perfect intelligent weighing system is constructed through adjusting and optimizing the existing business process of weighing, combining with various anti-cheating means as well as making full use of information technology in the new age. Moreover, the weighing information as well as information of door control system and chemical inspection system is integrated combining with respective weighing characteristics of motor truck scale and rail weighbridge to solve such practical problems as the continuously increased variety of weighing materials for materials measurement, more complex business and reduction of weighmen. As a result, the levels of measurement control and informatization management as well as efficiency of flow of materials are improved to meet the requirements of informatization and automation for current weighing system.

The caking index of coal is one of the important indicators for evaluating plasticity of coal. In order to accurately measure the caking index of coal, the influence relations between various components of uncertainties and evaluation results of uncertainties for caking index of coal are analyzed in detail in the paper. The components of uncertainties include such influence factors as the standard uncertainty u(rep) introduced by repetitive tests, standard uncertainty u(m) introduced by weighing mass m of sample with the scale, standard uncertainty u(c) introduced by weighing coke residue during detection process of sample, standard uncertainty u(r) introduced by rotational speed of drum and standard uncertainty introduced by temperature changes of muffle furnace. The uncertainties of measurement results for the caking index of coal are obtained through calculating the standard uncertainties, which provide the basis for scientifically and accurately providing measurement results.

The requirements for surface quality of non-oriented silicon steel are very high as well as such defects as pits and color differences are not allowed on the surface, otherwise, the normal use will be affected. The pits on surface account for a larger proportion in surface quality defects so that product delivery and economic benefits are affected. The analysis results indicated that the accretion for furnace roller was the main cause of pit defects on steel plate. The poor cleaning quality of steel plate, high oxygen content in the atmosphere of annealing furnace and wear of furnace rollers are the main causes of accretion for furnace roller. The accretion for furnace roller is significantly reduced by adopting such methods as improving the cleaning quality of incoming steel plate, optimizing atmosphere environment of annealing furnace and ensuring quality of furnace rollers so that the surface quality of steel plate and qualification rate of silicon steel products have been significantly improved.

The changes of morphology, component and size for non-metallic inclusions in smelting process are studied with metalloscope and scanning electron microscope-energy spectrum analysis by sampling in each link of technological process of heavy rail. The results showed that the non-metallic inclusions in smelting process were spherical and their main components were CaO-SiO₂-MgO-Al₂O₃ as well as the proportion of content for each component was changed regularly with technological links, sizes were decreased gradually and quantity was reduced with the advance of technological process. The main source of inclusions in rail could be judged according to the change laws of components for inclusions in each process of smelting process for heavy rail. It could be inferred that the large size inclusions in heavy rail steel are compound inclusions composed of deoxidation product that is not upfloated combining with foreign inclusions during continuous casting process by analyzing the scanning electron microscope-energy spectrum detection results for large size inclusions in heavy rail.

In order to improve the safety management level of company, Baoshan Mining Co. has established and implemented the “235” safety management system that “establish such two systems as workplace safety responsibility system and supervision system of performing duties as the core, strengthen the construction of such three basic systems engineering as safety production standardization, working mechanism of double prevention and safety construction of work team as well as summarize and promote such five types of advanced experiences of safety management as behavior observation, negative list system, five management procedures for breaking rules and regulations, tracing analysis of hidden dangers and accidents and comprehensive evaluation of interested parties”. Baoshan Mining Co. has achieved the goal that there were not any liability accidents of minor injuries or more serious results in 2021 through implementing the new management system.

The trace amount of refining grain elements are added into carbon manganese steel as well as the heat treatment method of quenching and tempering is applied in production based on the standard. The mass production results showed that the mechanical properties could meet requirements and toughness was good. After the heat treatment of quenching and tempering, the yield strength of steel tube is not less than 500 MPa, tensile strength is not less than 620 MPa, longitudinal elongation is not less than 20%, average longitudinal impact value at -20 ℃ is not less than 180 J and the performances could meet customer's requirements; carbon equivalent is controlled below 0.44 to ensure the subsequent weldability.

In the paper, the falling accident caused by stomping on color plate is analyzed with fault tree. It is with the qualitative and quantitative analysis through drawing fault tree and successful tree as well as the fault tree is simplified with the Boolean algebra principles so as to obtain the minimum cut set and path set, probability of occurrence of top event, importance degree of basic event structure of fault tree as well as important links of accidents so as to provide the basis for preventing accidents. The results showed that the casualty accidents of falling caused by stomping on color plate were mainly due to such factors as ineffective safety belts, damaged upholder, stomping on color plate and loss of balance of body so that the measures should be taken to control them.

In the paper, such aspects as the design thoughts, principles and methods of evacuation lighting and standby lighting in electrical room of steelshop are elaborated by taking GB 51309—2018 Technical Standard of Emergency Lighting and Evacuation Indicating System for Fire Fighting as the design consideration combining with the design process of converter project in a steelshop. The necessary illumination and accurate evacuation information are provided for safe evacuation of personnel so that it is ensured through selecting reasonable emergency evacuation lighting control system for fire fighting as well as power supply and distribution scheme of lamps and lanterns.

Such aspects as the establishment of data governance system, construction of data platform and data application design are planned and designed by taking “acquisition, storage, management and application” of data as the main line, aiming at such existing problems that the data sharing and risk early warning in financial domain of Baotou Steel are not timely as well as combining with the business situations and future plan of financial department of Baotou Steel. Moreover, the complex and changeable data application scenarios are satisfied through data warehouse design and data platform application design. The business indicators are improved and business decisions are supported through effectively using data internally; the management efficiency of enterprise is improved and marketing is assisted through constructing client portrait and dissecting customer transactions externally.

The causes for lower qualified rate of transverse low temperature impact toughness at -20 ℃ of SM490YB hot-rolled H beam for offshore oil platform are analyzed with such instrument and equipment as the optical microscope, scanning electron microscope and energy spectrometer. The results showed that the poorer low temperature impact toughness of test steel was caused by large Al₂O₃ inclusion, harder bainite structure, coarse grain and banded structure in the steel. The transverse low temperature impact toughness at -20 ℃ of test steel is improved obviously and qualified rate of impact at -20 ℃ is increased from 80% to 100% by reducing carbon content of test steel as well as optimizing smelting and rolling processes so that the grain size and inclusions of test steel are refined as well as types of microstructure are optimized.