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Daily maintenance method of DZ-United magnesium alloy furnaceThe inside and outside of the furnace should be kept clean and tidy, and the iron oxide, carbon black and sand in the furnace should be regularly removed. Cleaning must be done when the power is turned off and the furnace temperature drops to room temperature. The silver paint on the surface of the shell must always be kept intact, preferably 1-2 times a year to reduce the heat loss of the magnesium alloy furnace body. It is forbidden to directly put the wet workpiece into the furnace. When loading, gently handle it, do not hit the brick and electric heating components. Do not force the oversized workpiece on the small stove to raise the temperature of the furnace so high that it burns the lining. When the furnace temperature is above 350 °C, the furnace door cannot be opened to cool down. It is strictly forbidden to use compressed air to cool the furnace. When the furnace temperature drops to 350 ° C, the shielding gas can be turned off and the entire power supply can be cut off. Always check whether the temperature automatic control system is normal, in order to prevent the temperature from running out of control and burn the furnace lining, the temperature control instrument and the thermocouple should be regularly corrected. Check the tightening of the terminal bolts regularly. The magnesium alloy ingots must be preheated to about 150-200 ° C each time. All tools for the molten magnesium alloy fluid must be dried and preheated to prevent moisture from entering the magnesium alloy fluid causing an explosion. In the event of a fire or immediately shut off the supply of water and electricity near the furnace, and use dry sand and D-type fire extinguishers to extinguish the fire, be sure to calm down and ensure personal safety. Emergency treatment of furnace leakage: When there is more magnesium liquid, some magnesium liquid can be shot, and then several pieces of cold material are quickly added. Allow the magnesium to solidify quickly. After the slag or after feeding, when a large amount of flame appears in the furnace, the gas protection flow should be increased, and a teaspoon of sulfur powder is added to the surface of the solution to provide temporary protection. If there is a sudden power outage, the protective gas will continue to pass into the crucible, always pay attention to the metal surface of the magnesium alloy furnace, such as the phenomenon of burning smoke, increase the amount of SF6, and add the appropriate amount of sulfur powder until the call or drop Until room temperature.

Fire safety of magnesium alloy1. The main disasters of molten magnesium alloy are:l Magnesium alloy on firel Magnesium liquid sputteringl Personnel burnsDo not use water to extinguish fireDo not use Class A, B, C fire extinguishers2. The correct extinguishing agent and its fire fighting procedures are as follows:(1) Covering agent for magnesium alloyl Usually fire in the furnace, use a covering agent to extinguish the fire in the initial stage of combustion or a small amount of burning.l When using, dry the covering agent with a spatula or other tools and sprinkle it on the fire.l Cut and throw the cover plastic bag directly to the fire, unless the fire is too large to be accessible.(2) dry dry sandl Dry or dry sand can be used to extinguish fires regardless of whether the fire has burned.l Make sure the dry sand is dry before use.l When using, use a shovel to spread the dry sand on the fire. The amount should be large and the coverage should be average.l For magnesium chips, when the slag is extinguished, not only should it be covered and should be tumbling, so the fire extinguishing effect will be good.(3) Metal fire extinguisher for magnesium alloy (D type fire extinguisher)l The metal fire extinguisher cannot completely extinguish the burning magnesium, and the fire is controlled.l Operate according to the method and procedure of using the fire extinguisher. The injection pressure should not be too large to blow away the burning magnesia to create a larger disaster range.l Because the fire cannot be completely extinguished, after the fire is controlled, the embers must be batched, and a small amount of shovel should be moved to other safe places for further treatment.After years of production practice and learning improvement, Dingzhengxin Magnesium Alloy Furnace has won the favor of a large number of customers at home and abroad with its excellent quality and perfect service.Professional magnesium alloy furnace provider!If the original article is reproduced, please indicate the source!

At present, the world's magnesium resources are very rich, ranking 8th in the earth's crust, accounting for 2.35% of the crustal mass. Magnesium alloy has the characteristics of low density (about 1.78 g/cm3), high specific strength, excellent electromagnetic shielding and vibration and noise reduction, good heat dissipation, excellent biological characteristics and environmental friendliness. It is used in aerospace, transportation, high-end equipment and construction. 3C products, leisure products, energy storage equipment and other fields have a wide range of uses, known as the 21st century green materials and strategic new materials, has been highly concerned by the world, and is expected to become the third foundation after steel and aluminum. Metal structural material.China is a major magnesium alloy research country in the world. The academic papers on magnesium alloy furnaces published by Chinese scholars have been ranked first in the world for more than ten years. The total number of invention patents applied for and authorized is also far ahead in the world of intellectual property; the world's most plastic magnesium alloy material is developed, the widest Magnesium alloy sheet, the largest magnesium alloy hollow profile and the largest diameter magnesium alloy ring; the invention of a series of industrial lead technology such as self-purification, anti-gravity filtration, new asymmetric processing, high-precision rolling of sheet metal; Elsevier has founded the world's first magnesium alloy journal, the chairman and secretary of the International Organization for Standardization (ISO) "Magnesium and Magnesium Alloys Committee"; many of the world's top magnesium alloy scientists, often come to work with Chinese scientists on magnesium alloy research jobs. Since the first International Conference on Magnesium Alloys was held in Beijing in October 2003, six international conferences on magnesium alloys have been held. Each meeting brought together the top magnesium alloy scientists from dozens of countries including Germany, the United States, the United Kingdom, Canada, South Korea, Japan, Australia, and the scientific and technical personnel of representative magnesium and magnesium alloy enterprises. The latest research results of magnesium alloys and The effects of its large-scale industrial application have been fully demonstrated at each conference.China is a major producer of magnesium and magnesium alloy deep-processing products in the world. It has a large number of cast magnesium alloys and wrought magnesium alloys. The 2017 magnesium production and export volume account for 3/4 and 2/3 of the world respectively. Ranked first in the world. According to incomplete statistics, there are more than 100 magnesium and magnesium alloy deep processing enterprises in China, and more than 20 important magnesium alloy research and development platforms at the national and provincial levels. More than 50% of the international standards for magnesium and magnesium alloys are drafted and formulated by China. The world's largest magnesium alloy grade, more than two-thirds of the world's automotive magnesium alloy parts are produced in China. For the first time in the world, the production line of wrought magnesium alloy sheet with an annual output of more than 5,000 tons has been realized. For the first time in the world, large-scale production of wrought magnesium alloy and large-scale application in textile machinery, 3C products, rail transit and other fields have been realized. Magnesium alloy furnaces show an increasingly broad application prospect.China's magnesium mine resources are abundant, and proven reserves rank first in the world. Magnesium alloy has also become one of the few metal materials in China with international voice. With the gradual commissioning of magnesium smelting in Qinghai Salt Lake, China's advantages in the field of magnesium metal will be further strengthened. However, China and the global magnesium alloy industry also have many challenges: First, the market application scale is still very different from the bulk of basic metal materials; second, compared with steel and aluminum alloys, basic research is still quite lagging; third is suitable for High-performance alloy grades for large-scale market applications are still under-represented; Fourth, insufficient attention has been paid to the development of new magnesium smelting technologies. The low-cost advanced deep processing technology of magnesium alloys cannot fully meet the needs of larger-scale production and application; The level of scientificization needs to be further improved, and the construction of magnesium alloy database and product design platform needs to be strengthened. We expect more outstanding scientific and technological workers to join the research and development team of magnesium alloy furnaces to make new contributions to the realization of China's major countries from materials to materials.

You don't need traditional coal, gas, electricity to provide power, the train speed can reach 400~500 kilometers, do you believe it? Recently, the reporter saw such a "high-speed pneumatic suspension train" model at the School of Vehicle Engineering of Chongqing University of Technology. Do you know a bird named 鵜鶘? The inspiration for the high-speed pneumatic suspension train comes from it. Experts say the train is expected to change the world's transportation system.The bullet head looks like a high-speed rail, and the body has a ring-shaped wing like an airplane.The reporter saw that the model of this high-speed pneumatic suspension train is more than one meter long. The head of the bullet is like a high-speed train. The body has a ring wing and an air propeller, which is similar to the aircraft.“The first-generation and second-generation style trials and real-time tests of high-speed pneumatic suspension trains have been completed in Japan.” Lai Chenguang, a professor at Chongqing University of Technology who is involved in the development of high-speed aerodynamic suspension trains, said that such high-speed pneumatic suspension trains are completely natural. Energy-driven, low-cost, and very fast. “If the speed is 500 km/h, the energy consumption of the pneumatic suspension train is 1/3 of that of the high-speed train and 1/6 of the maglev train.”Lai Chenguang said that he was exposed to this project in 2004. “At that time, I participated in this project as a teacher at Jilin University.”In 2007, Lai Chenguang came to Japan and participated in the research of the project more deeply. "Mainly responsible for aerodynamics."I have not been out of the lab for two months and proposed a ring wing design.From 2007 to 2011, Lai Chenguang conducted four years of research in Japan. In the past four years, he stayed in the wind tunnel laboratory every day, used the smoke method to observe the flow of air, and even caused poisoning and hospitalization. "With two months, I couldn't leave the lab, and the rice was sent in." In a test, Lai Chenguang was poisoned and fell down and stayed for several days.In 2011, Lai Chenguang came to Chongqing University of Technology. He led 4 teachers and more than 20 graduate students to continue to tackle high-speed pneumatic suspension trains.After in-depth research and analysis, the automobile aerodynamics team of Chongqing University of Technology put forward the theory and method of driving stability control of high-speed aerodynamic suspension trains, which provided key theoretical guidance and basis for its in-depth research and development. At the same time, the team also proposed the design concept of the ring wing and verified it, which further improved the aerodynamic performance of the train. "In short, it is mainly to study the stability of train travel, and proposed the design of the ring wing." Lai Chenguang said.New design to improve transportation capacity, the commercial pace of the car is acceleratingLai Chenguang told reporters that in the previous design, the wing (wing) of the high-speed pneumatic suspension train was similar to the plane. It was a pair of horizontal wings with vertical winglets attached to the tail end, but such "wings" were on the train. When driving, unstable airflow is generated behind the wing, which affects the smoothness of the train during driving.“And we designed the ring wing to form a frame on a three-dimensional surface, and the top and bottom of the frame are not on a vertical line, but on the back. This design makes the airflow much more stable than before, which will greatly improve The stability of the train," Lai Chenguang explained.In addition, the design of the ring wing can also improve the transport capacity. “With the design of the ring wing, the lift-to-drag ratio (lift force divided by the resistance) is increased by 30%-40%, and the transportation efficiency is improved.” Lai Chenguang introduced that the high-speed aerodynamic suspension train should have high operating efficiency and strong carrying capacity. It must be designed long. "But the consequence is that the track area is large and the construction cost is much increased. We propose that this ring wing can increase the transportation by 30%-40% when the width of the track is constant. ability."The increase in stability and operational capability has accelerated the commercial pace of high-speed aerodynamic suspension trains.The first high-speed pneumatic suspension train line is expected to open in Japan in 2025According to the results of aerodynamic research, combined with industrial design and aesthetics, culture and other factors, the automotive aerodynamics team of Chongqing University of Technology designed the third generation train model "LOOP", making this "flying train" closer to people's lives. One step. Next, the Sino-Japanese team will be equipped with a flame retardant magnesium alloy body based on the newly designed “LOOP” model and conduct more in-depth experimental research and verification.According to the plan, Japan will open the first high-speed aerodynamic suspension train line in 2025. "We plan to go from Narita Airport in Japan to Haneda Yang, all underground tunnels, with a design speed of 400 kilometers per hour. It can realize the intercommunication between the two airports in more than 10 minutes. Now, it takes more than an hour to walk from the ground. The second from Tokyo to Osaka, with a speed of 500 kilometers per hour, can realize the intercommunication between the two places within an hour, and now it takes two hours."“Tokyo to Osaka is full of natural energy. We have tested the climate and wind along the track. Solar panels are installed according to the sun exposure time in this area, and the windmills are installed according to the natural conditions of the wind.” Lai Chenguang said, “ The solar energy and wind energy collected and converted along the way of the prior art can drive the system to make a round trip every 12 minutes. According to the calculation of three cars and 120 cars per car, 360 people can be transported at a time."Lai Chenguang said that this project, which only uses natural energy and is driven by zero pollution, seems unlikely to be completed, but is actually very close to the lives of ordinary people.Developed body materials and accidentally discovered magnesium air batteriesIn the study of high-speed pneumatic suspension train materials, the R&D team also "accidentally" discovered a highly efficient magnesium air battery.At the time of material research and development, Professor Takahama Tatsuo of Tohoku University in Japan proposed the use of magnesium alloys as body materials because magnesium alloys are light and strong. In the process of researching the processing of magnesium alloys, Xiaobin Taizhao discovered that “the reaction between magnesium alloy and air will discharge, so Xiaobin Taizhao began research on magnesium air battery and made great progress.”"The emergence of high-efficiency and controllable magnesium air batteries will greatly promote the development of new energy vehicles. Several companies have invested billions of dollars to promote the industrialization of the magnesium air battery." Introduction, the emergence of high-efficiency and controllable magnesium air batteries has great benefits for China. "China's magnesium reserves are very large and the quality is very good. According to Xiaobin Taizhao's estimate, magnesium is enough for humans to use for hundreds of millions of years. The magnesia produced can also be reduced by the sun. It can be said to be inexhaustible. It uses magnesium to generate electricity. The energy generated by magnesium oxidation is higher than the energy efficiency. It is much higher than the current battery. ”At present, Xiaobin Taizhao has entrusted Lai Chenguang as a Chinese agent to find a partner.Inspired by research and development, a bird called cockroachSurprisingly, the research on high-speed pneumatic suspension trains is related to a bird. Professor Takahama Tatsuo of Tohoku University in Japan discovered that a bird called 鵜鶘 (Albatross) can fly more than 900 kilometers per meal when it migrates, with an amazing “fuel efficiency ratio”. Why is its "fuel efficiency ratio" so high, after in-depth research, "discover that they are taking advantage of the natural phenomenon of WIG."Lai Chenguang explained that the so-called WIG phenomenon is that when the wing shape (bird's wings) is close to the ground, the lift will increase sharply and the resistance will decrease. "If the bird is flying in the sky, it often flaps its wings to generate lift, but close to the ground, as long as the wings are opened, the resulting lift is much larger than the high altitude. This lift is related to the height of the wings from the ground, when the bird's flight is controlled At a certain height, you can support the weight of the body without flapping your wings. We have found that the closer to the ground, the greater the lift."In fact, before the development of high-speed aerodynamic suspension trains, former Soviet scientists used this principle to develop the "Caspian Monster" - a plane that floats in the air, its fuselage is similar in size to the Boeing 747, and the speed of the sea cruise is about It is 500 kilometers per hour.