On February 25, 2022, Ningbo Top Group Co., Ltd. (hereinafter referred to as “Top Group”) successfully held the mass production of 7200T integrated super-large die-casting rear cabin in Hangzhou Bay Manufacturing Base Phase IV – Light Alloy Nine Plants A grand offline ceremony was held, and the relevant leaders of the core strategic partner Human Express Highhe Automobile and the distinguished professor of the National Engineering Center for Light Alloys of Shanghai Jiaotong University were invited to attend.
b918c043db19bfc7ff7678c37786e63b.jpg With the smooth roll-off of the integrated super-large die-casting rear cabin, it marks that Top Group has become the first auto parts supplier in China to mass-produce super-large integrated aluminum alloy structural parts manufacturing technology.
The length and width of the super-large structural parts produced by the 7200T die-casting machine are nearly 1700mm and 1500mm respectively. This is also the largest known integrated aluminum alloy die casting in the field of auto parts, achieving a weight reduction effect of 15% to 20%.
As a leading high-tech automobile company, Human Express Auto Co., Ltd. has cooperated with Toppu Group in integrated die-casting technology. Through this technology, dozens of components are integrated into one piece and cast into shape at one time. This technology is a subversion of the traditional automobile manufacturing process, ending the traditional automobile manufacturing method of stamping and then welding, the process complexity is greatly reduced, and the entire development cycle is also shortened by 1/3. Therefore, it has huge advantages in terms of lightweight effect, production efficiency and processing quality.
The integrated die-casting process is a complex molding technology, which requires innovative materials, equipment, molds, and processes to match it. In terms of materials, Top Group has cooperated with China Express and Shanghai Jiaotong University, and is the first company in the world to successfully apply the TechCast™ high-strength and toughness heat-free aluminum alloy material jointly released by them. Compared with traditional aluminum alloy materials, this heat-free alloy material can avoid the dimensional deformation of parts and surface defects caused by heat treatment. application. The fluidity of the material is more than 15% higher than that of the same level of materials, and the strong-plastic product is more than 30% higher, ensuring that the performance of the vehicle collision and other performance reaches a higher dimension. In terms of equipment, the 7200T die-casting machine introduced by Top Group is the first super-large die-casting machine of this tonnage put into use in China. In 2021, the company signed a strategic agreement to purchase 21 sets of die-casting units, including 6 sets of 7,200-ton, 10 sets of 4,500-ton and 5 sets of 2,000-ton die-casting equipment, which are used for super-large structural parts of new energy vehicles, such as front engine room and rear body. And the production of battery casings and other products.