Copper-aluminum rolling equipment presents diversified development trends With the rapid development of China's copper-aluminum processing industry, China's copper-aluminum processing equipment has also undergone a process of self-development-introduction-learning and reference-domesticization. After nearly 20 years of exploration and innovation, as of now, China's self-designed and manufactured rolling mills have approached or reached international advanced level in low-speed, narrow-gauge specifications. High-speed rolling equipment, wide-width rolling mills, and single-rack double coiling aluminum strip heat The development of rolling mills and hot strip mills is also showing good momentum. With the continuous growth and changes in market demand, China's copper-aluminum processing equipment market has experienced diversified demands in recent years and is gradually moving toward high-precision, wide-format, high-speed, high-tech, and continuous rolling. The development of high-precision and modernization industry has increasingly increased the accuracy of materials, and the high precision of the products requires the development of high-precision equipment; these include high-precision thickness control and high-precision plate control. In addition, because products such as aluminum foil are always expected to be thinner, control of the running accuracy, tension, and speed of the equipment will require higher accuracy. Advanced thickness control technology is the key to producing high-precision tapes. In addition to advanced control methods such as feedforward control, mass flow control, and strip segment tracking, the current thickness control system (AGC) develops fuzzy control, intelligent control, and roll eccentricity compensation. Advanced control technology, the performance of the rolling mill to play well. With the increase of product width and the dual requirements of plate type control and high-speed production, the automatic control of the plate type is particularly important, so the rolling machine with plate type automatic control system is used by more and more manufacturers. Wider range width Due to the consideration of product quality and output, and the maturing of rolling technology, the width of rolling mills has rapidly expanded. For example, the width of aluminum foil used in packaging bags has reached 1800 mm or more, and the demand for wide aluminum foil has increased. The volume is growing rapidly. At present, the world's enterprises capable of producing wide-width foils above 1800mm include China's Bohai Aluminum Co., Ltd., Xishun Aluminum Foil Co., Ltd., France's Pugh Alcoa Rugol Rolling Mill, and Germany's Greven Brom Mill, Aluminum Canada. One of the widest can produce 2150mm double zero aluminum foil. In the field of hot-rolled sheet production, wider requirements have also been put forward for width. At present, the United States can produce slabs with a width of 5,440 mm. The relevant personnel pointed out that it is necessary for China to build a plate production line with a rolling width of 3800 mm. The high speed of the current rolling mill production requirements have gradually increased. In the rolling of aluminum, more and more high-speed rolling mills with rolling speeds of more than 1200 m/min. This coincides with the fact that rolled products are becoming thinner and thinner and the production capacity is getting higher and higher; now the speed of aluminum foil mills has reached more than 2500 m/min. In copper processing, the rolling speed is also gradually increasing. Our country's past mill speed is generally below 500m/min. Now we have started rolling mills with design speeds above 800m/min. The speed of foreign high-speed rolling mills has been above 1200m/min. High-tech mills continue to emerge in order to pursue increasingly perfect products, high-tech rolling mills continue to emerge. These mills can be said to focus on the current rolling new technologies and advanced technologies. Its complete process automation system ensures that the production can be optimized. These new technologies include: strip flatness control; strip thickness control; optimal control of strip area; optimal control of strip production; production planning and control; artificial intelligence control; etc.; CVC, UC in rolling mill models , HC, DSR, etc. These advanced control technologies make the strip production easier, the plate type easier to control, and the dependence on the worker's skill level is greatly reduced. Continuous rolling Past continuous rolling is often used in hot rolling mills. However, in recent years, there have been continuous rolling of various strips, and there have been two stands, three stands, and three or more stand rolling mills. Even more striking is the fact that aluminum foil production has also begun to produce double-stand rolling. The research data shows that for double-zero aluminum foil, compared with the single stand independent rolling mill with the same specifications, the production of the double-zero aluminum foil can increase the output of the aluminum foil by about 20% while the investment is reduced by 15%. Production costs can be reduced by 8%. This shows the charm of continuous rolling. At present, China's independently designed and developed processing equipment has a large gap compared with the international advanced level on the whole, but some technologies are catching up with the world's advanced level. Luoyang Nonferrous Metals Processing Design and Research Institute is developing a batch of 2400mm (1+1) type aluminum strip hot rolling mill, 2500mm six-high cold rolling mill, 2000mm aluminum foil rolling mill, high-speed aluminum foil rolling mill and copper strip finishing mill and other batches of rolling mills with world advanced level. Design and manufacturing. The design features of these rolling mills are consistent with the development trend of today's world rolling mills and have become a bright spot for the development of copper-aluminum processing equipment in China. (Yu Jinhai)
Copper Capillary Tube,Capillary Tubing,Air Conditioner Copper Capillary,Air Conditioning Capillary Tubing
Suzhou Green New Material Technology Co., Ltd. , https://www.szgreenvip.com