This paper analyzes the technological gap between domestic hot rolling mills, cold rolling mills and finishing equipment in the titanium plate and strip production line and imported equipment, and summarizes the development trends of key process equipment and the key directions for achieving import substitution.

The J22 soft magnetic alloy is widely used in precision processing due to its excellent material properties. However, its surface processing often leads to the generation of cracks. In this paper, in order to investigate the origin and optimization of the surface cracks of this material during processing, the electronic probe and X-ray diffraction were used to analyze the elements and structure of the material itself. In addition, the existing heat treatment processes were explored and improved. Finally, based on the DEFORM simulation of the cutting precision processing process, the influence of cutting parameters on cutting force was analyzed, and then characterized as the correlation with surface cracks. The experimental results show that the heat treatment process has a certain impact on the generation of cracks, but the main reason is the influence of cutting process parameters on cutting force, which in turn affects the surface quality.

Using TC11 titanium alloy as the experimental material, this paper investigated the influence of annealing temperature on the microstructure evolution, texture characteristics and tensile properties of TC11 titanium alloy. The results show that during annealing in the biphasic region, the alloy structure consists of primary α phase and β transformation phase (secondary α phase + residual β phase); when the temperature rises to the β single-phase region, the primary α phase completely dissolves, forming coarse β grains accompanied by triclinic grain boundary characteristics. After annealing at different temperatures, all the sample {0001} crystal planes exhibit significant texture features, forming a mixed texture, and the texture strength continuously decreases with the increase of annealing temperature. However, the orientation distribution of sample {11-20} and {10-10} crystal planes shows no obvious texture features. The tensile performance test indicates that as the annealing temperature increases, the alloy strength continuously increases, but the plasticity significantly decreases.

In order to comprehensively evaluate the manufacturing quality of small-sized TC8 titanium alloy rods (with diameters of Φ30 mm and Φ40 mm), chemical composition, low-magnification structure, microstructure and mechanical properties tests were conducted. The results show that the chemical compositions of the head and tail sections of the TC8 alloy ingot are very close and fall within the upper limit of the standard requirements. The β transformation temperature is determined to be 987 ℃. The low-magnification structure is a fuzzy crystal, and the microstructure is an equiaxed structure consisting of 45% (wt%) spherical primary α phase + β transformation matrix. Moreover, the uniformity of the core, R/2, and edge areas is relatively high. After undergoing a dual heat treatment process of 950 ℃ for 1 hour, air cooling, followed by 550 ℃ for 2 hours, and air cooling again, the sample exhibited a combination of toughness and strength.

In order to study the influence law of cutting parameters on the cutting temperature during the helical milling process of high-integration-score SiCp/Al composite materials, this paper adopts the single-factor experimental method, taking the cutting speed, axial feed per tooth and tangential feed per tooth as variables, and conducts a systematic analysis by combining numerical simulation and cutting experiments. The results show that the cutting temperature significantly increases with the increase of cutting speed, and the overall temperature range is 340 520℃, the cutting temperature rises with the increase of the axial feed rate per tooth, and the temperature range is 405 to 490℃, while the cutting temperature shows an unstable fluctuating trend with the increase of the tangential feed rate per tooth, and the temperature distribution is 394.6 to 478.5℃.

Regarding the irregular point-like scratches on the surface of copper strips used for manufacturing battery tabs in the on-site production process of a certain copper processing enterprise in China, this paper conducted in-depth and systematic research and analysis. The morphology of the irregularly-shaped point-like scratch defects was observed microscopically using a scanning electron microscope. Detailed comparative observations were conducted on the surrounding areas of the defects using a 3D scanner. EBSD elemental analysis was performed on the elements at the point-like scratch locations and those in the normal areas. Based on the light transmittance indicators of the on-site rolling oil and the pollution degree indicators of the rolling oil NAS grade, a statistical analysis was conducted. At the same time, the influence of different proportions of filter aids was verified, as well as the analysis of the lubrication performance of the rolling oil, the lubrication components of the rolling oil, and the composition of the waste soil of the filter aids. By optimizing the lubricating components of the rolling oil and using a reasonable ratio of diatomite and clay, the problem of point-like scratches on the surface of the copper strips used for battery tabs was effectively solved. This provided a reference basis for improving product quality.

This paper mainly introduces the layout and form of the center correction device for the continuous annealing line of aluminum strips, and uses it to solve a phenomenon of layer misalignment during winding. Through the analysis of the phenomenon, relevant factors are excluded, and ultimately the root cause of the deviation problem is identified, solving the periodic layer misalignment problem of winding, enabling the production line to operate normally.

In this paper, based on the working principle of the aluminum strip casting machine, two schemes for pre-stress hydraulic control of the aluminum strip casting machine are introduced. By comparing the two pre-stress hydraulic control schemes, namely the non-leakage electromagnetic switch valve and the proportional pressure reducing valve, and analyzing their advantages and disadvantages in combination with practical applications, the applicable scenarios of the two schemes are finally presented.

This paper studies the establishment of a comprehensive evaluation model for the configuration scheme of the rolling mill, and systematically compares and analyzes the process characteristics of the two configuration modes: the remote type (outside the entrance guide plate, with a rolling mill spacing of more than 5 meters) and the close type (between the entrance guide plate and the rolling mill, with a rolling mill spacing of 4 meters or less). The results show that the remote configuration has excellent rolling visibility, and the matching of its continuous rolling process is significantly affected by the specifications of the sheet and strip materials; although the close configuration improves the collaborative efficiency between the vertical rolls and the rough rolling process, it is limited by the narrow working space, resulting in insufficient ease of equipment maintenance and repair. A short-stroke edge-forming process is proposed. By dynamically adjusting the reduction amount, the hot-rolled yield rate could be increased by approximately 1%.

In response to the problem of the upper and lower vibration of the strip during the production process of the aluminum strip casting rolling machine, this paper proposes an active control method based on the dynamic compensation of the winding torque. This method detects the speed fluctuations of the winding machine in real time, designs an electronic damping device model based on the damping theory, and dynamically applies reverse compensation torque to suppress vibrations. The results show that the proposed method can effectively control the speed fluctuation amplitude from the maximum of 64 rpm to within 10 rpm, significantly eliminating visible vibrations and ensuring smooth production. This provides an effective electrical solution for similar industrial vibration problems.

This paper systematically studies the guidance and application of the Human Cyber Physical Systems (HCPS) theoretical framework in the construction of intelligent aluminum processing factories. In view of the production characteristics of aluminum processing, which involve multiple specifications, small batches, long processes and strong coupling, this paper analyzes the core pain points such as insufficient production organization flexibility, low intelligence level of the operation process, and prominent safety and environmental risks. It proposes the construction theory of an aluminum processing intelligent factory that transitions from the "human-physical" binary structure to the "human-information-physical" tripartite architecture. By establishing a "perception-decision-execution-optimization" dynamic closed-loop for the aluminum processing production organization and process, an intelligent upgrade was achieved. After conducting research, a hierarchical construction framework was proposed (intelligent production line/digital manufacturing/wise operation), with a focus on demonstrating the construction methods of data-driven mechanisms, AI integration application strategies, and security protection systems, providing a reference theoretical support and technical implementation path for the industry's transformation and upgrading.

In response to the “carbon neutrality” goal and the demand for green manufacturing, this research proposes an energy management system solution based on Internet of Things, edge computing and big data technologies. The system adopts a “cloud-edge-end” collaborative architecture to achieve the integrated application of technologies such as internet of Things, industrial communication, time series database, hierarchical edge computing topology, and big data analysis. At the same time, a “pilot-first, step-by-step iterative” implementation path was proposed, which would sequential advance data transparency, management refinement, and AI intelligence, gradually improving energy utilization efficiency, reducing production costs, and enhancing the green competitiveness of enterprises.

This article introduces the treatment process for oily wastewater from non-ferrous metal processing enterprises. The wastewater can be treated through a series of procedures such as neutralization, secondary air flotation, primary sedimentation, biological contact oxidation, secondary sedimentation and disinfection, thereby reducing the wastewater discharge volume of the enterprises and increasing the reuse rate of production water.

Based on the production process of recycled aluminum, this article systematically analyzes the sources, types and treatment technologies of exhaust gas. It indicates that advanced purification equipment and technological innovations can be adopted to achieve compliance with pollutant standards and even zero emissions. This will further enhance environmental performance and market competitiveness, and provide a reference for industry practice.

Based on the existing problems of the SCR denitrification system of the established recycled aluminum melting and preservation furnace group, considering the characteristics of the flue gas in the furnace chamber, and from the perspectives of operational reliability and economic savings, as well as strong adaptability to the flue gas, an innovative optimization was carried out for the process layout, catalyst type, measures for dealing with low-temperature flue gas conditions, denitrification reducing agent type, ammonia production and ammonia spraying methods, and key parameter control schemes of the SCR denitrification system of the recycled aluminum melting and preservation furnace group. The reasons and advantages of the optimization were also explained, and a new SCR denitrification system for the recycled aluminum melting and preservation furnace group was formed. The actual operation results have proved that this system is advanced, reliable and reasonable, and can provide reference and inspiration for domestic recycled aluminum enterprises in their NOx treatment.