1. No feed When the manual operation hammer head moves normally, but there is no injection action when it is automatic, check the following items: 1. Whether manual or automatic selection knob is normal. 2. No input of mold locking signal: The mold locking termination sensor switch does not cooperate with the mold locking confirmation limit switch, and the mold locking termination sensor switch senses, but the mold locking termination confirmation limit switch is not pressed, or the limit switch is damaged. 3. The proximity switch is damaged when the material is shot. 4. Check if there is an electric signal for the first injection speed, return hammer oil valve, and whether the spool moves. 5. The injection time is too short. 6. The injection hydraulic cylinder is damaged. 7. No pressure in hydraulic system To 2. No thimble The ejection hydraulic cylinder can not realize the ejection pin action, you should first observe whether the ejection pin work indicator on the electrical box panel is on or whether the computer has a signal output 1. If the indicator light is off or the computer has no signal output, check: ①Whether the mold is opened in place. ②If core-pulling is installed, check whether the core-pulling is in place. ③Whether the thimble limit switch is damaged. 2. If the computer has a signal output, check: ①Whether the thimble pressure is normal (observe the pressure gauge). ②Whether the fourteen-way amplifier board is normal (observe whether the thimble output indicator on the fourteen-way amplifier board is on). ③Whether the circuit from the fourteen-way amplifier board to the hydraulic valve is open, and whether the oil valve coil is normal. ⑤Check whether the thimble oil valve is normal and whether the thimble hydraulic cylinder has internal leakage. ⑥The ejector pin of the mold is stuck, and the ejector pin cannot be ejected. To 3. The hammer head does not return or the return hammer is not in place Remove the hammer head and the hammer head connection components, and the injection piston rod can return to the position, indicating that the punch is stuck. If the injection piston rod still cannot return after the punch is removed or the return hammer is not in place, check. 1. Whether the return hammer in-position induction switch is damaged. 2. Whether the return hammer valve is damaged. 3. Whether the injection hydraulic cylinder is damaged. To 4. Leakage of hydraulic cylinder The leakage of hydraulic cylinder includes external leakage and internal leakage. To External leakage refers to the external leakage at the cylinder and cylinder head, cylinder bottom, oil port, exhaust valve, buffer regulating valve, cylinder head and piston rod, etc., which can be directly observed from the outside. To Internal leakage refers to the leakage of pressure oil from the high-pressure chamber inside the hydraulic cylinder to the low-pressure chamber, which occurs at the connection between the piston and the inner wall of the cylinder, the inner ho...

1. Consider the injection pressure: there are fast pressure, filling, pressurization, and pressure holding stages, and the functions are different. The piston makes the molten metal enter the cavity at a slower speed until the cavity is filled. Pressure holding stage: The injection punch transfers the pressure to the cavity through the solidifying remaining material and the metal in the intersection part, so that the solidifying metal is crystallized under pressure, so as to obtain a densely structured casting. The length of the pressure holding time is mainly Determined according to the characteristics of die-casting alloy, casting wall thickness, pouring system and other conditions; Cooling stage: refers to the period from the end of pressure holding to the ejection of the casting during the die casting process. 2. Filling time: adjust the die casting filling time according to the shape of the product, the degree of wall thickness, etc. 2. The role of several important parameters in the die-casting process of the die-casting machine. We can find that the following parameters are of great significance to the quality of the casting: The time that the alloy liquid stays in the molten cup. The speed of the punch or the acceleration of the punch during the start of the punch in the first injection stage. The transition point from the first injection stage to the second injection stage, that is, the displacement stroke of each injection stage. The acceleration time and filling time of the punch in the mold filling process (the second stage). The pressurization pressure and pressurization time of the liquid metal in the mold cavity after the filling is completed. The condensation time of the casting in the mold cavity. The main die casting process specifications derived from the above parameters include slow injection speed, high speed (mold filling process), speed conversion position, boost pressure, and cooling time. The slow injection speed needs to be controlled in order to prevent the alloy liquid in the molten cup from tumbling and the alloy liquid temperature drops too much. At present, the more advanced control method is 9-stage slow speed control, which can simulate the uniform acceleration movement and roll the pressure chamber. The possible reduction of qi is the lowest. The high-speed speed is also called the secondary speed. It is the speed of the punch during the mold filling process. Its control is to ensure a good metal atomization fluid state at the inner gate during the mold filling process. The recommended data can be consulted according to the casting structure and wall thickness, and then converted into the movement speed of the punch according to the gate size and the size of the pressure chamber. The speed switching position, also called the second fast switching position, means where the punch starts to accelerate. It accelerates when the molten cup is completely filled, or when the alloy liquid reaches the gate, and even more ...

Cost-effective nationwide: 1. Save electricity and reduce production costs: (Compared with Longhua 800T die-casting machine and 800T die-casting machine of other brands) Compared with other brands of die casting machines of the same model, the power saving rate reaches 50%-80%. "Die-casting machine energy-saving system benefit analysis table" is as follows: Note: The power saving rate is 50%, 15 kWh/hour, 30 days a month, 24 hours a day, 10800 kWh per month can be saved, 1 yuan per kWh means: 10800 kWh*1 yuan=10800 yuan/month* December = 129,600 yuan/year. 2. Price, configuration, performance, after-sales service: Remarks: Longhua Intelligent High Speed and High Precision Die Casting Machine Project, on November 24, 2019, at the 3rd China MEMS Intelligent Sensor Industry Development Conference, led by the Anhui Provincial Government and Bengbu Municipal Government, and jointly developed and produced with the Hefei Institute of Chinese Academy of Sciences , The project has been included in one of the four high-end manufacturing projects in Bengbu. At present, the project has won: 9 national invention patents, 2 high-tech products, 1 Anhui Province New Product Certificate, 4 Computer Software Certificates and other honors (Completely independent intellectual property rights). 3. Function of reducing oil temperature: In the actual production of Longhua Energy-saving high-speed and high-precision die-casting machine, the oil temperature can be reduced by about 8 degrees, hydraulic valves, hydraulic pumps, hydraulic valve plates, hydraulic plug-ins, hydraulic oil, hydraulic components, molds, injection chambers, injection heads and The life of the whole machine is 40% longer than that of other domestic brands of the same model. Reduce production costs by about 40%. 4. Improve the qualification rate of die-casting products: Longhua energy-saving hydraulic system (developed by the Hefei Institute of Chinese Academy of Sciences, has won nine national invention patents and 33 utility model patents), the whole machine energy-saving hydraulic system has a fully closed-loop design, the system pressure and flow control are more accurate, and the die-casting products are qualified The rate of die-casting products of other domestic brands can only reach about 70%. The 29% of the waste products need to be melted again, which wastes a lot of energy and consumables (crucible, injection chamber, injection The service life of heads, molds, etc.), production cycle and labor. 5. Improve the response speed and production efficiency of the die casting machine: Due to the fast response speed of the mold opening and closing pump station of the Longhua energy-saving hydraulic system (it has won nine national invention patents), the production efficiency is about 30% higher than that of other domestic brands of the same model die-casting machine. 6. Noise reduction: Longhua energy-saving hydraulic system reduces noise by more than 6 decibels compared with traditional motor ...

      Metal die-casting is an advanced technology with less and no cutting. It has the characteristics of high consumption efficiency, saving original materials, reducing consumption costs, good casting performance, and high precision. It is widely used. Among them, the largest market for die-casting castings is the automotive industry. As humans pay more and more attention to sustainable development and environmental maintenance, automotive lightweighting is the best way to achieve high efficiency, safety, energy saving, warmth and environmental protection.   Using aluminum alloy instead of traditional steel to make cars can reduce the weight of the whole car by about 30%. Because the die-casting mold is to die-cast molten metal at 400~1,6000C under high pressure (30~150MPa). During the molding process, the mold is periodically heated and cooled, and is scoured and corroded by hot metal sprayed at high speed.    Mold materials require high thermal fatigue resistance, thermal conductivity, and good wear resistance, corrosion resistance, and high temperature mechanical properties. It is still difficult to meet the ever-increasing performance requirements only by the application of mold materials. Various surface treatment technologies must be applied to the surface treatment of die-casting molds to meet the requirements for high efficiency, high precision and long life of die-casting molds.    Die-casting mold failure method When the die-casting mold is in contact with high-temperature liquid metal, it not only has a long time of heating, but also the heated temperature is higher than that of forging dies. The temperature of die-casting non-ferrous metals is 300~800℃, and the temperature of die-casting ferrous metals is above 1000℃. It also received a very high pressure of 30-150 MPa, and was subjected to wear and corrosion caused by repeated heating and cooling and high-speed scouring of liquid metal activities.

Although new energy vehicles are not very mature in many aspects, their emergence has certain significance for energy saving, emission reduction, reduction of exhaust emissions, and environment protection. There will be greater development in the future, and new opportunities to the aluminum die casting machine industry.  In recent years, as the country has paid more and more attention to energy conservation and environmental protection, the new energy automobile industry has taken advantage of the trend under a series of policy subsidies. It has gradually become the darling of the market due to its advantages in safety and environmental protection. According to the data, before November of 2018, the sales of new energy vehicles increased by 68% year-on-year to 1.03 million units, breaking through the 1 million unit mark, which means that our country's new energy vehicle market has officially risen.aluminum die casting machine industry This is undoubtedly a new opportunity for the aluminum industry, indicating that aluminum alloys still have greater improvement in the new energy vehicle market. Aluminum alloy has low density, light weight, corrosion resistance, excellent plasticity, and high strength. It is the preferred lightweight material for new energy vehicles. It is mainly used in car bodies, panels, engines, chassis, suspensions, wheels, heat exchangers, batteries, etc. . With the increasing research of aluminum alloy in new energy vehicles, the application of aluminum alloy will be further expanded.aluminum die casting machine industry Facing such great business opportunities in new energy vehicles, the aluminum profile industry should pay more attention. First of all, it is necessary to clarify the problems that aluminum alloys will encounter in the lightweight application of new energy vehicles. At present, aluminum alloy processing requires more complicated technology compared with steel processing. Therefore, the difficulty of processing is a problem faced by many workers. Failure to process can easily affect the overall safety and stability of new energy vehicles.

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On the morning of April 26, the opening ceremony of the 2021 China (Anhui) Technology Innovation Achievement Transformation Fair was held in the Anhui Innovation Hall. Zhang Qingli, vice chairman of the National Committee of the Chinese People's Political Consultative Conference, delivered a speech and announced the opening of the fair. With the theme of "Consolidating the Foundation of Innovation and Accelerating the Transformation of Scientific and Technological Achievements", this session of the Science and Technology Fair is co-sponsored by the Ministry of Science and Technology of China, the Chinese Academy of Sciences, and the Anhui Provincial People's Government.  Li Jinbin, Secretary of the Anhui Provincial Party Committee and Director of the Standing Committee of the Provincial People's Congress, delivered a speech. To Li Jinbin, Secretary of the Anhui Provincial Party Committee and Director of the Standing Committee of the Provincial People's Congress, delivered a speech. He said that Anhui Province should implement the "national policy" of innovation, creating both a technological peak and a technological plateau. "With Hefei as the core, Wuhu and Bengbu as the two wings, and other cities as the main points, we will speed up the construction of the'five one'. The upgraded version of the main innovation platform and the sub-platforms of'One City, One Center' form a provincial innovation matrix featuring each individual's strengths and benign interaction." Wang Qingxian, Governor of Anhui Province, presided over the opening ceremony of the China (Anhui) Science Fair. To Xu Nanping, Deputy Minister of Science and Technology, delivered a speech. Xu Nanping, Vice Minister of the Ministry of Science and Technology, said in his speech that China (Anhui) Science and Technology Fair will allow more “flowers” of science and technology to produce “fruits” of the industry, and provide solid strategic support for serving and boosting the high-quality development of Anhui and the whole country. Zhang Tao, Vice President of Chinese Academy of Sciences, delivered a speech. In his speech, Zhang Tao, vice president of the Chinese Academy of Sciences, said that at this session of the Science Fair, the Chinese Academy of Sciences will release more than 100 achievement projects, display more than 70 items, and release 5 key projects. "I hope that both parties will take this fair as an opportunity. , Actively docking, and constantly expanding the scope and depth of cooperation. Further focus on the layout and needs of major industries in Anhui Province, actively promote the transformation of high-quality scientific research results of the Chinese Academy of Sciences, form new technologies, create new production capacity, create new business formats, and drive the rapid development of local industries To achieve mutual benefit and win-win results." Li Jinbin, Secretary of the Anhui Provincial Party Committee, kicked the gong for the Anhui Science and Te...