Carbon neutrality has become a key focus of China and the world in the new stage of development and competition. The low-carbon of the entire industry chain after reaching the peak of carbon emissions is becoming a key proposition. As an important functional material, silicon steel plays an important role in the low-carbon value of the power industry chain. On the one hand, due to its complex process and long process flow, the carbon emission intensity of the production process is relatively high; On the other hand, high-grade silicon steel, with its excellent electromagnetic performance, brings enormous carbon reduction potential to the industrial chain in the processes of power generation, transmission, and consumption. LCA is an important method for calculating the carbon reduction value of silicon steel at the industry chain level throughout its entire lifecycle, and has guiding significance for evaluating the economic and social value of using high-grade silicon steel in carbon scenarios. In addition, with the gradual implementation of the EU CBAM carbon border tax, the silicon steel industry needs to adapt to the policy environment based on corresponding computing capabilities and create low-carbon competitiveness with high-level structures as the core through LCA based analysis.

Grain-oriented silicon steel is a critical soft magnetic material, and the silicate magnesium layer is an integral part of the product structure, which presents significant challenges in control. The quality of the silicate magnesium layer has a profound impact on the surface quality of grainoriented silicon steel. The uncertainty in factors such as the oxide layer, annealing atmosphere, annealing temperature, and magnesium oxide can lead to defects in the final silicon steel product, thereby limiting, to some extent, the development of the grain-oriented silicon steel industry. Therefore, this paper summarized the influence of these factors on the silicate magnesium layer based on the process characteristics of grain-oriented silicon steel and the research conducted both domestically and internationally. Additionally, it identifies areas that require further study in the future. 

Based on the characteristics of laser cutting, wire cutting and punching shear, experiments were carried out to explore the optimal shear parameters on 6.5 %Si silicon steel strip with a thickness of 0.10 mm respectively. The shear quality and the impact on magnetic properties of the steel were evaluated. The results showed that wire cutting specimen has the minimum depth of coating-affected zone and the minimum height of burr, while the roughness of laser cutting specimen is the best. For magnetic performance, laser cutting has the most impact while wire cutting and punching shear are similar on the effect of  magnetic performance.

The effects of microstructure and texture on mechanical properties and anisotropy of A and B high grade non-oriented silicon steel with different thickness were studied. The results showed that in the finished plate, the grain size of sample A is larger than that of sample B, and the main texture components in the two silicon steels are α* texture, γ texture and λ texture. Solid solution strengthening plays a dominant role in the strength contribution of silicon steel. The increase of Si content enhances the effect of solid solution strengthening, which leads to the increase of the strength of the finished plate and the decrease of the elongation. The anisotropy of the yield strength of silicon steel is due to the different Schmidt factors. The Schmidt factors of {111}〈110〉, {112}〈110〉 and α* textures in the RD direction are larger than those in the TD direction. A75 and B60 show the highest yield strength in the alloys of their respective components.

A study was conducted on the application of water-soluble silicon steel sheet paint in hydrogenerator, with key performance indicators such as paint film appearance, degree of curing, adhesion, electrical resistance, breakdown voltage, oil resistance, water resistance, and hot-press shrinkage rate being verified within the factory setting. Additionally, practical engineering applications were validated on real machines in terms of lamination and iron loss temperature rise. The results indicated that all performance indicators of the water-soluble silicon steel sheet paint meet technical standards and operational requirements. The application of water-soluble silicon steel sheet paint to the fan-shaped sheets of hydrogenerator stator core is reliable in performance, feasible in technology, and environmentally friendly.

In recent years,the focus on magnetic performance has gradually extended from electrical steel materials to motor stator cores made of electrical steel materials.The magnetic properties of motor stator cores have attracted increasing attention from motor manufacturers and new energy vehicle manufacturers.This article focused on the magnetic properties of motor stator iron cores,and established a magnetic measurement system to achieve the detection of the magnetic performance of motor stator iron cores, and conducted relevant application research.By detecting the magnetic properties of the stator iron core of the motor,the differences in magnetic properties between different grades of electrical steel products and different manufacturing processes of the stator iron core can be quantified,providing guidance for the application of electrical steel products in motors and providing data as a reference for the final production and development of motors.

Carbon emission calculation was done in this paper by analysis of RH desulphur process, fluxes and application of electrical steel. The set conditions are of 0.001 5 % decrease of sulphur content, flux addition amount of 7.5 kg/t steel, and calcium aluminates and CaO-CaF2 combination were chosen. The results showed in consequence that the production of the two fluxes generate carbon emission of 2.362 kg CO2/kg and 0.788 kg CO2/kg, and that of 405 kg CO2/ t steel and 416 kg CO2/ t steel during flux desulphur application process. The carbon emission in use of silicon steel was also discussed and estimated, which says RH desulphur process is playing important role in silicon steel production.

Based on the analysis of carbon sleeve nodulation theory and on-site process practice, this paper summarized the mechanism and control elements of carbon sleeve roller nodulation evolution in non-oriented silicon steel continuous annealing furnace. Through equipment modification of the annealing furnace, reducing the carbon content of the base material before annealing, controlling the dew point and atmosphere inside the furnace, enhancing the surface control of the base material before annealing and the cleaning quality of the alkali washing process, and regulating the material management regulations, the occurrence of carbon sleeve roller nodulation has been effectively reduced. By using the speed compensation method to quickly locate the range of nodules and reduce the preparation time for the positioning of nodule rollers, the goal to improve the high quality, continuity, and periodicity of continuous annealing furnace production has been achieved.

The squeezing and deviation-correction roller at the outlet of acid tank of the CT unit for silicon steel is one of the most critical devices in the entire operation line. Its working environment is harsh, and it is usually difficult to maintain effectively. Frequent failures have brought great troubles to the stability of production and operation. Once the strip breaks, abnormal operations by operators will lead to a doubling of safety risks. Focusing on how to reduce bearing failures, a new type of fluid-blocking device for the squeezing and deviation-correction rollers at the outlet of acid tank was described and compared with traditional fluid-blocking devices in this paper. Combined with the usage situation after the implementation of the device, the good effect of this new device is proved and it is worthy of further promotion.

By introducing the structural features of two kinds of vertical looper, expounding the troubles of the vertical looper trolley overturning,and exemplifying the influencing factors of the looper trolley overturning, the countermeasures and treatment points of the looper trolley overturning fault were summarized in this paper. The main points of maintenance of functional accuracy of vertical looper were also expounded.

Mathematical intellectualization is a new method that deeply integrates digital analysis techniques with certain business. It is also an import issue for the enterprise towards the intelligentization. This paper introduced an intelligent system for monitoring the state of the Sendzimier mills machine. The keypoint is converting the professionals’ experiences into computer automaticly fault prediction. The system has the advantanges of strong practicality and almost no extra investment besides the existing database platform. It has been proven to be very effective for preventive maintenance in the past three years.

Presently, the common roller arrangement model for the 20-high rolling mill is primarily based on the assumption of left-right symmetry within the roller system. However, it’s important to note that the actual diameters of the corresponding rollers may not necessarily align. In such instances, relying solely on the left-right symmetry approach introduces potential errors, which could compromise the precision of the roller arrangement process.Moreover, this method is not suitable for cases where there are discrepancies in the diameter compensation between roller A and D, thus it exhibits certain limitations. The coordinate calculation method proposed in this paper for the asymmetric roller arrangement model comprehensively addresses these concerns, offering a more expansive scope of applicability and heightened precision in calculation.At the same time, the results of this paper can be programmed to calculate the roller center coordinates quickly and accurately.