Yuefeng Group 1 invention patent won the 24th China Patent Award "Excellence Award"!
April 24, 2023
Established in 1989, the China Patent Award is co-sponsored by the State Intellectual Property Office of China and the World Intellectual Property Organization (WIPO) and recognized by the United Nations World Intellectual Property Organization (WIPO). China Patent Award is of great significance to the evaluation of scientific research strength, the enhancement of core technology value evaluation, the improvement of product brand influence, service product sales and other aspects, and has become a hard indicator to reflect the scientific and technological innovation strength of enterprises.
The 24th China Patent Award has been publicized from April 17 to April 21, 2023. According to the rules of China Patent Award Evaluation and Notification of the State Intellectual Property Office on the Selection of the 24th China Patent Award, a total of 30 gold Award winning projects of China Patent, 10 Gold Award winning projects of China Appearance Design, 60 Silver Award winning projects of China Patent and 15 Silver Award winning projects of China Appearance Design were selected. There were 782 winning projects of China Patent Excellence Award and 45 winning projects of China Appearance Design Excellence Award. Among them, Yuefeng Group's invention patent "A Method for preparing cerium manganese/molybdenum multiplex conversion Film on aluminum Alloy Surface" won the 24th China Patent Award "Excellence Award".
The awarded patents were evaluated and approved by the Science and Technology Project Department of Yuefeng Group in December 2022, and approved and recommended by China Non-ferrous Metal Industry Association, and began to apply for the 24th China Patent Award, and successfully won the China Patent Excellence Award. The award-winning patent is a high-quality invention patent cooperated by Yuefeng Group and South China University of Technology, and is also one of the outstanding achievements of Yuefeng Group.
As we all know, aluminum alloy is the second largest metal material used only after steel. In the atmospheric environment, aluminum alloy can form an extremely thin oxide film on the surface to avoid erosion, but this kind of spontaneous oxide film is easy to damage, especially in the environment containing Cl-, prone to pitting, crevice corrosion, stress corrosion and other damages. Chromate passivation technology has been widely used because of its excellent corrosion resistance and convenient operation, but the hexavalent chromium in chromate passivation technology has high toxicity, easy to cause cancer and serious harm to the environment.
The award-winning patent proposed a method to prepare a multicomponent conversion film on the surface of aluminum alloy. After the aluminum alloy was activated by pre-treatment, the golden manganese cerium conversion film was formed by soaking in Ce-Mn treatment solution once, and finally the black manganese cerium/molybdenum multicomponent conversion film was formed by soaking in Mo treatment solution twice. The treatment liquid of the awarded patent has simple composition, good solution stability, and does not contain any toxic chromium and organic matter. The cerium manganese/molybdenum multicomponent composite conversion film prepared on the surface of aluminum alloy has excellent corrosion resistance and weather resistance, high bonding strength with the matrix and good wear resistance. The award-winning patent has been well transformed in Yuefeng Group, forming corrosion resistant color aluminum profile (spraying) products, mainly used in doors, Windows, curtain walls and other scenes. In addition, the group has applied for a series of 41 patents on the surface treatment, preparation process, processing device, measuring device and products of aluminum alloy and aluminum profiles.
In addition, the patented technology and achievement transformation project "Development and industrialization of chromium-free surface passivation technology for aluminum alloy profiles" won the second Prize of "Jiangsu Province Science and Technology Progress Award 2018". "Doors, Windows, curtain walls" and other products formed by aluminum alloy treated by patent technology won the "Science and Technology Progress Promotion Award" of China Door, Window and curtain wall Industry in 2021.