The S450J0 steel pile is vanadium nitrogen alloy steel in H section steel family as well as it is with such characteristics as high strength, heavy gauge, good impact toughness and weldability. In the paper, its key technologies and processes are mainly introduced. The composition of steel is designed as well as the relevant smelting, continuous casting and rolling processes are formulated based on the performance requirements of products. The production practices show that the composition design of S450J0 is reasonable and products could meet the requirements of technical agreement. The technical difficulties are the stable control of high nitrogen content in industrial productions and rolling of heavy gauge with small compression ratio.

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.

The spindle of gang saw, running and positioning of baffle trolley are driven by four Siemens servo motors as well as the control system is 611U frequency converter. The Siemens 611U frequency converter has gone out of production, so the spare parts purchase is difficult and manufacturing cost is high. The spare parts of S120 frequency converter that is widely used in field are universal and it is with easy maintenance. A lot of downtime caused by main drive system failure could be avoided by using the S120 system as backup system of 611U system to synchronize data and switch flexibly so as to avoid affecting productions. After adopt the new S120 system as backup system, the safe operations of production line is ensured, production capacity and maintenance efficiency of equipment are improved as well as the equipment is upgraded and reformed so that the service life and cycle are extended.

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.

In the paper, the design, main components and features of high pressure water descaling system in the production line of heavy plate of Baotou Steel are introduced and analyzed. Moreover, the system equipment is improved based on the experiences of on-site maintenance and fault handling for high pressure water system in the production line, which is with greater reference significances for the design, maintenance, fault diagnosis and optimization of high pressure water descaling system in the production line of heavy plate.

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.

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 this paper, it is analyzed the essential differences between cost budgeting with ERP system and traditional cost budgeting as well as discussed the advantages of ERP system in cost budgeting based on its characteristics in the cost budgeting process of iron and steel enterprise combining with the actual production of an iron and steel enterprise. The degree of participation and work efficiency of all staff in cost budgeting are significantly improved by the high synergy and efficiency of ERP system in production practices, which could provide timelier and more reliable data for deploying production decisions of company.

In the paper, it is introduced the mineralogical characteristics of minerals named by geographical names and person names in Bayan Obo ore deposit. There were once 7 kinds of minerals named by geographical names, but 3 kinds are confirmed at last as well as there are 5 kinds of minerals named by person names. They are all new minerals, of which the Nioboixiolite-(□) is the most recently approved new mineral. The minerals named by geographical names are with not only their own narrow mineralogical meanings, but also other generalized meanings. The narrow meaning of minerals named by geographical names refers to just a specific kind of mineral, while their generalized meaning usually refers to various ores produced in the region.

In the paper, it is introduced the experimental study on heat treatment at a series of temperatures of 1 000~1 250 ℃ was carried out by taking the Fe-Mn-Al-C high manganese austenitic test steel as object of study. The surface oxide layer, microstructure and grain size of test steel were detected and analyzed separately. The results showed that the thickness of surface oxide layer increased with heating temperature increased, there was grain boundary oxidation when heating temperature was above 1 150 ℃; the grain size of test steel increased with heating temperature increased, there was mixed crystal at 1 150 ℃ and the grain size increased obviously at 1 250 ℃.