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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...

All the time, the aluminum alloy die casting cleaning is always a difficult problem. The practice of many enterprises is, after machining, do not do thorough cleaning, just use water to simply rinse, then blow dry, or even natural air dry, and then stacked in the warehouse for a few months.Suddenly one day need to be out of the warehouse, only to find the work piece long mildew spot, moldy, black, yellow situation. At this time, we suggest you:  with die-casting aluminum mildew spot cleaning agent timely and thoroughly clean, including the surface of the work piece oil, slight oxidation mildew point (mildew point is still very small, do not look carefully, the naked eye can not really see). after cleaning, immediately do an anti-oxidation treatment. It should be noted that currently chromic acid has been banned, the use of chromium and cyanogen free passivant to meet the environmental requirements. After anti-oxidation drying, the workpiece shall be placed in a dry and ventilated place and inspected regularly. Replacement time Vulnerable workpiece according to the mold production product strain, deformation, fracture, uneven or mold production abnormal sound failure, please replace at any time If it is damaged during assembly or production, please replace the required workpiece at any time. Fragile workpiece Item Replacement time Remark Ejection rod At any time Deformation, fracture, fluff, abnormal sound Cast pin At any time Deformation, fracture Irregularly shaped insert At any time Deformation, fracture Seal ring At any time Leaks, breaks, expiration date Rubber tube At any time Leaks, breaks, expiration date

The mold is composed of moving mold and fixed mold. Parting surface refers to the part that can be contacted when the two are closed.According to the requirements of mold production, the parting surface of the moving and fixed mold core should be 0.15-0.35mm higher than the parting surface of the mold frame (mold frame) to prevent the parting surface from flying materials. 1.It is generally more machine problems that new mold parting surface large area and local parts of the problem of flying material a.Clamping force is small and not locked in place.(empty lock for many times, check the locking strength) b.Is the supercharging pressure too high?Is the trip too short? c.Whether the holding time is too short. d.Is it too warm? (normal position 660° ~ 680°) e.Check die casting machine for wear of curved core (curved arm) or bushing.Is the gap too large? f.Whether the machine wall is balanced 2.The mold will also have problems. a.The mold is not in place. (apply red powder to the smooth and easy to check parting surface of the moving mold core, and (generally apply it to the parting surface of the mold core) after the mold locking, check whether the red powder traces of the parting material surface not applied reach the production requirements of 95% or more. b.Die core exhaust location smaller, shorter or deeper (-0.15mm or more), easy to fly 3.Mass production (more than 25,000 times) of mold parting surface flying material (old mold) a.Check whether the flying material position of parting surface is collapsed, the exhaust groove is too deep or there are foreign matters, such as aluminum slag is not cleaned, so that the mold can not close in place to produce flying material. b.Check whether the height of mold frame (mold frame) and mold core parting surface is in place. The normal closing die is: the upper and lower parting surface of the die core meets each other, and the upper and lower parting surface of the die frame has a gap of 0.3-0.7mm. Long time production products mold deformation, die box around the edge of the upper and lower parting surface hit dead or obviously adhere to foreign bodies, so that the mold core upper and lower parting surface can not touch, can not match to the effective position, resulting in the gap will have flying edge, flying phenomenon.

In die casting, mold cooling is often ignored, but it is essential for extending mold service life and maintaining production efficiency. Many operators skip connecting cooling water pipes to save time, and some manufacturers even omit cooling channels to reduce costs, leading to serious unplanned downtime and early mold failure. Mold steel has its limits. When mold temperature is too high, the core surface develops early heat-checking cracks. Some molds show large-area cracking before reaching 2,000 shots. In extreme cases, core temperatures exceed 400°C, causing discoloration. Rapid chilling from release agent spray then worsens cracking, while castings suffer deformation, strain, soldering, sticking, or scrapping. Using a proper cooling water or oil system reduces release agent consumption and shortens spraying time. Benefits include shorter die casting cycles, better product quality, and fewer stoppages from mold cracking, strain, or sticking. Cooling also reduces wear on ejector pins, core pins, and mold cores, extending mold life and total output. However, cooling channels must be checked regularly for blockage. Blocked lines remove all benefits and recreate overheating problems. For die casting manufacturers, a reliable mold cooling strategy is a basic production requirement, not an option.

When temporary shutdown is required, the mold should be closed so that the cavity and core are not exposed to prevent accidental damage.Downtime is expected to be more than 24 hours, in the cavity, core surface should be anti-rust treatment, especially in the wet area and rainy season, even a short time to do anti-rust treatment.Because the moisture in the air will make the surface quality of the product quality.When the mold is used again, the grease spots on the mold should be removed and cleaned before use. When the production quantity of the mold has been completed and other molds need to be replaced, the following work shall be completed before the machine is shut down: 1.Turn off the cooling water first 2.Blow the excess water in the water channel of the mold 3.The oil in the cylinder used for core pulling should be emptied as far as possible and the oil nozzle should be sealed to avoid leakage of hydraulic oil or pollution of the surrounding environment during storage and transportation. 4.All moving parts, parting surface residual aluminum slag products or other foreign bodies must be removed clean, clean and on the product part, each moving parts, parting surface oil protection or spray anti-rust agent. 5.Fill in the relevant records truthfully, send the accessories of the mold to the maintainer, and attach the qualified products of the last mold to the inspector as samples

On March 17, Li jun, the municipal government deputy secretary-general and director of Bengbu Center, Caokai,one engineer of the intelligent mechanical department of Chinese Academy of Sciences institute in Hefei, conduct research and communication in the factory of the bengbu longhua die casting machine co., LTD.. The communication focused on the progress of the "high-speed and high -precision die-casting machine system " (this project was signed with Chinese Academy of Sciences, hefei institute in  the third China MEMS intelligent sensor industry development conference in 2019) At the meeting, Zhou Wenping, Head of the enterprise, said that after the research and development of Cao's engineer team, the die casting molding rate has been improved from 70.1% to 100%, and the operation was also more simple and more humane. Longhua has nine authorized invention patents. At present, its die casting machines has been exported to Russia, India, Pakistan, Vietnam, Turkey, Azerbaijan, Bolivia, Morocco and other countries, and it has won the unanimous praise of customers at home and abroad,. The sales volume of the products has also reached more than ten millions. Cao said that the second phase of the project began before Spring Festival , and the progress of the project is ahead of schedule. The two sides are now in negotiations on a new project "to replace the traditional Connecting rod manipulator with a robot.". Li stressed that Bengbu Center would fully support the upgrading and transformation of traditional manufacturing industry, what's more, encourage enterprises to cooperate with the Institute for scientific and technological innovation canter, to focus on the development opportunities and set up a long-term vision. While tracking and supervising the progress of the approved projects, the Center should also actively connect with new projects to help enterprises grow stronger and larger with the best quality services. Review of the signing ceremony between Bengbu Longhua and Hefei Institute of Chinese Academy of Sciences Production and research base site Invention patents (two of which were developed in cooperation with Hefei Institute of Chinese Academy of Sciences) "The mighty pass is like iron, and now I have crossed it from the beginning." "Let the world fall in love with Made in China"

(1) Within three days of the actual operation of the die casting machine, be sure to pay attention to check whether there is nitrogen leakage, so as to prevent the equipment from being damaged in the nitrogen bottle during transportation. (2)One week after the actual operation, the first inspection will be conducted. From then on, the inspection will be conducted once a week and then every two months. In case of insufficient pressure, nitrogen should be added in time. (3)Ways of examining the nitrogen pressure are as follows: close the operation of motor, stop switch calibration, open the pressure relief valve, at the same time, observe the hydraulic pressure of booster oil and 2 speed hydraulic pressure , when the oil pressure falls to zero, the two groups of accumulator nitrogen pressure value equal to the pressure accumulator nitrogen pressure and fast injection accumulator nitrogen pressure .The nitrogen pressure must conform to the standard value in the user manual.