1. China's current high-speed rail construction is in full swing. In addition, the terrain in the central and western regions is relatively complicated, with many canyons and rivers. A large number of bridges need to be built during the process of railway construction. The aluminum alloy bridge has a relatively broad potential market due to its advantages such as convenient transportation and light weight. 2. Steel generally has problems of rust and poor low temperature performance. The rust of steel will seriously affect the robustness of the bridge, not only bring greater maintenance costs, but also serious safety risks. The poor low temperature performance will prevent the steel bridge from being used normally in some severe climatic conditions. And aluminum alloy materials generally have relatively strong corrosion resistance and low temperature performance, so they can be widely used in a variety of climatic conditions and durable. Although the cost of aluminum alloy bridges is generally high, low maintenance costs in the later stage may reduce the price gap to a certain extent. 3. Research on aluminum bridge decks at home and abroad has been very mature and widely used. The continuously improved level of material research and development also provides a technical guarantee for the development of new alloys that meet different performance requirements. In recent years, domestic aluminum manufacturers have gradually set their sights on the field of industrial aluminum profiles. Technically, it provides the foundation for the construction of aluminum alloy bridges. 4. Metros in full construction in major cities in China have very strict requirements for pressure from the ground. Due to the huge advantages of aluminum alloy bridges, it is foreseeable that more aluminum alloy pedestrian bridges and highway bridges will be designed and used in the future.
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The service life of aluminum profile extrusion die has become the major bottleneck of aluminum industrial development in China. The design work and fabricating cost of aluminum profile extrusion die occupies 20% of total cost of production. It is one of the key technology of aluminum extrusion industry. It refers to the texture, design, manufacture, inspection, mold repair and management. And its also one of the promising market. So how to make the fair use of those kinds of molds, we can do it as follow: Strictly implement the the production rule of aluminum extrusion When aluminum rod furnace starts up, the middle part temperature should be set between 530-550℃, and end part temperature should be set between 480-500℃. Make sure the soaking time is enough. And to avoid the temperature varies from external part to the internal part because that situation will lead to transformation of the mold and what’s more it will lead to the plastic deformation of the mold and then it will be scraped. The three centers must be regarded as one center The centers of container, extrusion steam and die holder must be regarded as one center. Or otherwise it will influence speed of each procedure. What’s more, it will influence the production or even lead to the greater uneven length of the two opposites and stop the extrusion production. Making reasonable selection of the supporting pad The factory must select the two-hold supporting pad to avoid the transformation of the under mold. And to make sure the extruded product in good forming stability and in little size change. And that preparation of this two-hold supporting pad must be before drawing a charge to make sure the mold would not be jammed by being cooling to much. Strengthen the feedback of aluminum extrusion processing A: the feedback of plugging an extrusion die The reasons can be various, people without specialized training can not figure out easily. Its better that the professional technicist inspect it and find out the reason thus repair the mould. B：the feedback of ejection of compact and shaping up It requires that the stub bar must be with the clear number of mould and flow direction of the whole processing. C：the feedback of the size being out of tolerance. When ejection of compact is normal but with size being out of tolerance, the technicist must choose one sample and mark correctly. One mistake can lead to the error of repairing the mould. Thus the technicist must pay high intension to it. (5) Only charging the feedback of the service condition can do good to the correction and and maintaining. And only in that way can increase efficiency of maintaining and decrease the frequency of maintaining or otherwise testing a new mould.
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Anhui Shengxin Aluminium Corporation Limited/Horus Huang Being in China and always paying attention to the news of the epidemic, I hereby report the actual situation of the epidemic to all overseas friends as below. The major turning point of the epidemic was around January 20 and 21. The seriousness of the growth of the epidemic attracted official attention. Wuhan was closed on January 22. Wuhan has a total population of 14 million. 5 million left before the city was closed. 70% of the outflow population has reached the cities around Wuhan in Hubei Province. Because Wuhan is the capital of Hubei Province, there are many people from other area of Hubei province working and studying in it. 30% of the population travelled to other regions of China( their hometown). Because of China's highly developed network, the severity of the epidemic immediately received the attention of the whole nation people. From January 25, almost all families in China and even in rural areas were isolated at home spontaneously. Relatives and friends start stopping visiting with each other. Since then, there have been very few pedestrians on both urban and rural roads, even those with masks. And the people who came from Wuhan, because of China's highly developed big data, mobile payment, real name ticket system, everyone is quickly tracked, accurate to everyone, even to remote mountain and rural areas. The staff of each grass-roots organization of the government visit and check their body temperature at their home every day. Fortunately, because of the traditional Chinese Spring Festival holiday, no one has to move out because of work except the government and community workers. Also because of the Spring Festival, every family and all markets have enough food in reserve. At present, 99.99% of the increasing number of infected people are infected before January 24, because the incubation period of the disease is 1-14 days. This week, and the next week, will be the peak number of infections. After that, it will gradually decline. In fact, according to today's epidemic data report, there has been a turning point, and the newly increased number of healers has exceeded the newly increased number of deaths. The data will gradually improve. A week later, before February 7, all those who have been infected will become ill and be sent to hospital. And no disease means no infection. Except for Hubei Province, all of Chinese companies will resume production on February 10. Thank you for your concern to us, and Happy Chinese New Year! Horus Huang Jan 30th, 2019
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Most modern factory floors require workbenches, and many stainless steel and wood workbenches have been replaced by aluminum profiles. As a manufacturer of aluminum profiles and workbenches, let me first talk about what aluminum profiles are. Aluminum profiles are aluminum alloy materials with different cross-sectional shapes obtained by hot-melting and extruding aluminum rods. The production process of aluminum profiles mainly includes three processes: casting, extrusion and surface treatment. Among them, the surface treatment mainly includes: anodizing, electrophoretic coating, fluorocarbon spraying, powder spraying, wood grain transfer and other processes. Next we compare aluminum and steel. In the manufacturing sector, steel has always been a popular material because it is cheap and has a wide range of applications. However, steel also has many disadvantages, which are time-consuming and labor-intensive. And the steel connection needs to be welded, which costs a lot of money. In addition, the processed materials often cannot be completely matched, so it is necessary to reprocess them. When reprocessing is performed, even the re-investment of the machine is needed, which virtually increases the cost. And steel is much heavier than aluminum, which makes transportation and installation less convenient. Therefore, despite the low production cost of steel, inflexible processing can lead to shorter life and double production costs. Steel also needs regular anti-corrosion treatment, which still requires a lot of cost. The inflexibility of processing and the costs associated with high transport weights make it unprofitable to re-use materials that are no longer needed. But with aluminum, the situation is completely different. The material is highly flexible both in manufacturing and in use. Using aluminum will be more economical and environmentally friendly than steel. And the weight of aluminum is extremely light, only one third of steel, so the price is almost the same as steel. And also has a certain load-bearing capacity. The machining process is very simple, no special machinery and equipment are needed, and no deep training of employees is required. In addition, the aluminum profile workbench does not need to be welded, and is connected with a special matching connector, which can be disassembled and assembled at will to achieve secondary use. In addition, no corrosion protection measures are required, which reduces maintenance costs. Therefore, aluminum can be used instead of steel when the load requirements are not very high.
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