91 九色视频丝袜_日韩 无码 二区_色欧美日韩亚洲_亚洲中文精品乱码_国产福利在线观看精品_国产欧美午夜久久_被窝福利视频不卡片_榴莲视频黄版下载_亚洲天堂激情_国产凹凸在线一区二区色老头

With the improvement of living standards, people pay more and more attention to the improvement of life quality, and picnics have become a very common way of relaxation for people to relax. We changed the image of the traditional picnic table stereotype, organically combined magnesium alloy and wood to design this rotary folding picnic table. Its folding method is different, easy to operate, simple and generous in appearance, and non-redundant in function, which is very suitable for contemporary home use.In the big cities such as Beishangguang, there are more and more young people living alone. Or active or passive, living alone is becoming a common life choice for young people. We combined the minds of young people to play and set the design direction of high-end tables and chairs in the home, hoping to let young people add a touch of leisure in the fast-paced work life. The elements we selected are regular hexagons, with metal as the bone and wood as the supplement. The main shape is the two chairs and the central round table that make up the regular hexagon. The chair can be combined with the table when not in use to reduce the floor space.Regarding the regular hexagon, from Pepos's "honeycomb guess" to the proof of the area, the regular hexagon has the smallest circumference. One is to provide inspiration for reducing materials, and the other is to have to sigh the magic of natural creation. The regular hexagon is associated with the hive, and the solitary is like a bee. Although living alone in a room, he still looks forward to the outside world and works diligently to protect his warmth.

In recent years, the market environment has undergone drastic changes, and the domestic manufacturing industry has been hit hard. At the same time, the competition has become increasingly fierce. The mold industry with the title of “mother of industry” has fallen into recession controversy. The mold industry is currently facing many difficulties, which means that its transformation and upgrading is an urgent task.The dilemma facing the mold industryFirst of all, the demand for manufacturing companies is not strong. Mold is one of the most important cornerstones of the industry and plays a vital role in manufacturing. However, in recent years, the global economic downturn has led to a decline in export molds; China is also in a critical period of manufacturing transformation and upgrading, and the mold industry is under pressure.Second, production costs continue to increase. The main factors affecting the cost of the mold include external factors and internal factors. The external factors are the cost of the mold materials, and the internal factors are the manufacturing costs. Due to the large number of low-end mold products, mold companies have gradually turned to high-end mold manufacturing to find new profit growth points, but high-end mold processing requires higher technology and more advanced equipment.Third, the phenomenon of corporate homogenization is serious. There are a large number of mold manufacturing enterprises in China, but quite a few of them are labor-intensive small enterprises. These large number of small enterprises produce lower mold costs, low product structure and technical content, and rough workmanship, resulting in low and medium The homogenization of the end mold products is more serious. This type of enterprise produces a large number of molds, low prices, low profits, no technical content, and it is easy to close down because it does not have a competitive advantage in the mold industry.Finally, the company's ability to innovate is weak. The innovation ability of China's mold enterprises is weak. On the one hand, the technological progress mechanism to promote independent innovation of enterprises has not yet formed. Enterprises lack the power and pressure for continuous innovation; on the other hand, they lack investment in technology development. The insufficiency of enterprise innovation capability, especially the ability of independent innovation, has become a key factor restricting the international competitiveness of China's mold industry.The transformation and upgrading of the mold industry should be all-round, including production processes, products, enterprise functions, business models, management and operations.At the production end, with the development of information technology and the construction of public service platforms, lean research and development will become the mainstream trend of the mold industry in the future. In the future, the strength of the mold enterprise does not value how many advanced processing equipment and how many employees are in the enterprise, but how much mold design and process manufacturing technology the company has accumulated, and how many technologies are deposited.On the product side, for traditional products, focus on implementing technology upgrades, implementing fixed asset renewal subsidy programs, increasing technological transformation of interest-subsidy loans, improving the core competitiveness and technological level of enterprises, and promoting the traditional manufacturing industry to jump to the high end of the industrial chain. The added value jumps to a high added value.In terms of enterprise functions, companies must spend their money on the cutting edge and focus on the most professional and self-professional links and fields so that they can truly enhance their competitiveness.In the innovation of business model, the value space of the business model innovation of mold enterprises can be found from the following three aspects: first, how to innovate customer value from the perspective of customers; second, how to optimize the integration of internal resources from the perspective of enterprises , to reduce costs; the third is to look at the entire industry perspective, how to optimize the integration of resources, to maximize the value.Mold enterprise business model innovation path orientation mapIn terms of management and operation, we must eliminate the waste of enterprises with fine management, and respond to national policy requirements to promote the development of manufacturing management in the direction of scientific, environmental protection and active service. It is worth noting that the key to the transformation and upgrading of the mold manufacturing industry lies in the construction of human resources teams.In terms of industrial agglomeration, the construction, scale and level of industrial clusters continue to develop and improve, and are gradually developing towards high-end.

(1) The strength and hardness of pure magnesium polycrystals are not high, so pure magnesium cannot be directly used as a structural material, and pure magnesium is usually used to make magnesium alloys and other alloys.(2) Magnesium alloy is the most developed and applied potential green engineering material in the 21st centuryPerformance comparison between magnesium alloy and other alloy materialsMagnesium in aluminum, copper, zinc, zirconium, hafnium and other metals can form an alloy, which is an alloy with pure magnesium, its mechanical properties are better, is a good structural material. Although wrought magnesium alloy has good comprehensive performance, magnesium is a close-packed hexagonal lattice, which is difficult to plastically process and has high processing cost. Therefore, the amount of wrought magnesium alloy is much smaller than that of cast magnesium alloy. There are dozens of elements in the periodic table that form alloys with magnesium. Magnesium and iron, barium, potassium, sodium, etc. cannot form an alloy. Among the applied magnesium alloy strengthening elements, alloying elements can be classified into three categories according to the influence of alloying elements on the mechanical properties of binary magnesium alloys:1. The elements that increase the strength are: Al, Zn, Ag, Ce, Ga, Ni, Cu, Th.2. The elements that improve toughness are: Th, Ga, Zn, Ag, Ce, Ca, Al, Ni, Cu.3. Elements that enhance toughness and have little change in strength: Cd, Ti, Li.4. Elements that significantly increase strength and reduce toughness: Sn, Pd, Bi, Sb.Effect of impurity elements in magnesiumA. Most of the impurities contained in magnesium have an adverse effect on the mechanical properties of magnesium.B, MgO more than 0.1% will reduce the mechanical properties of magnesium.When the content of C and Na exceeds 0.01% or the content of K exceeds 0.03, the tensile strength and other mechanical properties of magnesium are greatly reduced.D, but at the same time containing Na up to 0.07% and containing K up to 0.01%, the strength of magnesium does not decrease, but only reduces its plasticity.High-purity magnesium alloy has corrosion resistance comparable to that of aluminum1. The magnesium alloy matrix is a close-packed hexagonal lattice. The magnesium is relatively active and the oxide film is loose. Therefore, the casting, plastic deformation and anti-corrosion processes are more complicated than the aluminum alloy.2. The corrosion resistance of high-purity magnesium alloys is comparable to or even lower than that of aluminum alloys. Therefore, the industrial production of high-purity magnesium alloys is an urgent problem to be solved in the large-scale application of magnesium alloys.

Magnesium alloy is called "21st century green engineering material", its density is small, light weight, specific strength, high specific rigidity, low heat capacity, fast solidification speed, good die casting and dimensional stability, good shock absorption. Easy to process, low scrap rate, very suitable for use in the production of automobiles. At the same time, it has a wide range of applications in aerospace, portable computers, mobile phones, electrical appliances, sports equipment and other fields.Casting use, working conditionsThe inner door of the car door is used to install related electric controls, door trim and so on.Typical product characteristics1. New magnesium alloy material, light weight and thin wall;2. The wall thickness is integrally formed by die-casting process, which reduces many assembly and welding processes;3. The strength can meet the requirements of use, the shock absorption performance is good, and the human body protection performance is better.Product key requirements1. The product has no large area of cold separation, no shortage of meat;2. The product meets the installation strength and rigidity, and the deformation amount is small.Product key difficultiesLarge size, thin wall, difficult to form, prone to insufficient casting, cold, deformation and other issues.Casting use, working conditionsThis bicycle integrated wheel is used for sharing bicycles. The bicycle wheels have long-term outdoor work and are exposed to the sun and rain. If the conventional wheel is used, the wheel is easily damaged, which requires a large number of workers to perform repairs, and the wheel has a single appearance and is beautiful. After using this wheel, the wheel is not easily damaged, no need for a large number of staff to repair, and the wheels are various in appearance and beautiful, which adds beauty to the city.Typical product characteristics1. The product is light in weight and good in strength;2. The appearance of the product is beautiful and can make a traditional appearance that cannot be made;3. It takes a long time to use and is not easy to break. Reduced after-sales service and greatly reduced after-sales personnel.Product key requirementsThe product requires a pressure shock test that does not crack under 600KG impact (three times at the same point).