Time has gone backwards for 10 years. I am afraid no one believes that China's high-speed railway can break through 300 km/h. Today, the speed of the domestic EMU trains has reached 380 km / h, and the design speed has exceeded 400 km / h. In just over 10 years, China's high-speed railway construction and EMU manufacturing technology has experienced a leap-forward development. Behind this rapid development, there is a huge equipment manufacturing industry chain. Zhiqi Railway Equipment Co., Ltd. (hereinafter referred to as “Qiqi†") is in it.
Zhiqi is a high-tech enterprise established only four years ago. It is an international professional manufacturer of high-speed railway EMUs. It is also the only base for the production, assembly and overhaul of high-speed EMUs in China. Its production is high. The quality of the high-speed EMU wheelset has an indelible contribution to the rapid development of China's EMU manufacturing technology. When talking about the development of Zhiqi EMU's production and manufacturing, Zhiqi Equipment Minister Ma Dazhao said: "Although only a few years of development, Zhiqi already has an annual production of 50,000 pairs of EMUs. The assembly capacity far exceeds the processing capacity of the 10,000 pairs of the annual production of the EMUs, and the annual production capacity of the 50,000 pairs of moving wheels has basically met the needs of all domestic EMUs. Undoubtedly benefited from a series of advanced processing equipment such as DMG's Turn-milling and Machining Center. It is these advanced processing equipment that enable our EMUs to maintain high processing quality while maintaining high processing efficiency. ."
Zhiqi factory appearance
Quality requirements: absolutely safe
In recent years, Zhiqi has seized the opportunity of the rapid development of China's high-speed railways and positioned its products in the rapid development of high-speed EMUs and urban rail vehicles. Zhiqi's EMU wheelset products cover all the CRH1, CRH2, CRH3 and CRH5 cars of the China High-speed Railway Harmony EMU, all speed platforms with speeds of 200-380 km/h and ultra-high-speed tests with speeds of 400-500 km/h. The train's wheel pair. In addition, Zhiqi also successfully delivered metro wheelset parts such as Bangkok Metro Axle and Guangzhou Metro Line 5 axles.
The wheelset is the core component of the high-speed EMU bogie. Its manufacturing technology is one of the core technologies of the high-speed EMU, with high processing precision and complicated manufacturing process. According to Ma Dazhao, in order to ensure the smooth and safe operation of the high-speed EMU, the relevant parts of the EMU must pass the relevant safety verification of the Ministry of Railways, such as the accuracy and processing of dimensional accuracy and shape accuracy of such parts of the EMU wheelset. The quality requirements are extremely strict and must comply with relevant European and international standards such as UIC and EN. Therefore, from the beginning of its establishment, Zhiqi put the quality of its products first, and ensured the production of high-quality EMU wheelsets in multiple ways. The processing equipment such as DMG's DMU 125FD double-table turning and milling combined machining center purchased by Zhiqi is the most advanced numerical control equipment in the world. The production technology and technology adopted are also the international leading high-end imported from Italy Luqini Company. technology.
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