Zhongwang “Aluminum” pushes new works to help blue “Fuxing” go online

A new member of the “Fuxing” family will be added, and the “Fuxing” blue EMU will be put into operation for the first time at a speed of 250 kilometers per hour.

At 9:30 a.m. on December 15, 2020, the CR300BF “Fuxing” EMU (hereinafter referred to as the blue “Fuxing”) arrived at the Xi’an EMU of Xi’an Railway Bureau to take on the passenger transportation task of the Yinxi high-speed rail to be opened. It is understood that it is another brand-new product of the “Fuxing” platform, which will further enrich and improve the “Fuxing” EMU pedigree. Because its body is made of sea blue, it is affectionately called “Blue Warm Man” by many netizens.

Zhongwang Group, as the main supplier of aluminum extrusion materials for the entire vehicle body of the “Fuxing” in service, continues to serve the blue “Fuxing” by providing high-end aluminum extrusion materials to ensure the strength of the car body. Promote the lightweight upgrade of the entire vehicle body.

The relevant person in charge of Zhongwang said that the aluminum extrusion material used for the blue “Fuxing” car body has the characteristics of large width, thin wall thickness and strict tolerances. At the same time, it requires high mechanical properties, corrosion resistance, fatigue resistance and Comprehensive performance such as low temperature resistance. During the production process, Zhongwang Group prepared large-scale high-quality ingots and precision extrusion molds with the existing advanced equipment of the entire industry chain, developed and manufactured large-width section quenching equipment, and achieved the stability of the aluminum extrusion material of the car body. Efficient production, product comprehensive performance is higher than industry and national standards.

Upgraded capacity and ride experience

The blue “Fuxing” is one of the serialized products of China’s standard EMUs, which are designed to operate at a maximum speed of 250 kilometers per hour. It adopts 8 vehicles and has a total capacity of 613 people. There are 48 seats in the first-class seats and 565 seats in the second-class seats. It is worth mentioning that compared with the original CR400BF “Fuxing” EMU, the blue “Fuxing” has 37 more crews, and its transportation capacity has been greatly improved.

The relevant person in charge of Zhongwang Group said: “In order to build a premium model, the project technology has strict requirements on the weight, dimensional tolerances, surface quality, fatigue resistance, corrosion resistance and other aspects of aluminum extrusion materials. Our technical team combines Innovative design of the car body, innovative research and development of multiple sets of molds. During the production process, Zhongwang Group strictly controls the production links of melting, extrusion and heat treatment, and repeatedly conducts technical analysis and test verification. The final product meets all car body materials. The technical requirement of the vehicle body is to ensure the strength of the vehicle body while realizing the lightweight of the vehicle body.”In addition to the increase in capacity, the blue “Fuxing” will provide passengers with a better riding experience through upgrades to the configuration and interior.The car body adopts structural sound insulation and shock absorption design, which can effectively reduce the internal and external noise of the train when the train is running;Adjusting the internal pressure of the train through the high-pressure fresh air system can also effectively eliminate the discomfort caused by the eardrum when the train passes through the tunnel.

Fully automated technology, energy saving and more efficient

In the production process, the autonomous capabilities of key systems such as traction, braking, and bogies have been further strengthened, and the scope of loading of autonomous equipment such as pantographs has been expanded. The blue “Fuxing” implements Ethernet control for the first time, enabling the train to have monitoring and maintenance functions while ensuring the initial operation of the train-level network and meeting the train-level data transmission performance requirements.

At the same time, the blue “Renaissance” adopts a large-capacity battery power supply solution for the first time, and the battery can supply power for up to 8 hours. The leading vehicle is equipped with two additional parking brake cylinders, which has a parking braking capacity of 1.3 times the safety margin when parking on a 30‰ slope. The relevant person in charge of Zhongwang Group stated that the addition of brake cylinders puts forward higher requirements on the strength of aluminum extrusion materials for the car body. The Alloy composition formulated by Zhongwang and self-designed and manufactured heat treatment equipment make the strength of aluminum materials about 15% higher than the standard. , Fully meet the design requirements of CRRC.

In addition, the blue “Fuxing” also improved the lightweight level of the EMU through measures such as the integrated design of the main and auxiliary traction systems, and also ensured the applicability and safety of aluminum extrusion materials.

It is worth noting that, as a new masterpiece of the “Fuxing” platform, the maximum width of the blue “Fuxing” body is 3.36 meters, and the maximum height of the vehicle is 4.05 meters.This also led to the unavailability of part of the original aluminum extrusion die for the car body.Through in-depth exchanges with the design team of CRRC, Zhongwang Group has reformed the previous generation of aluminum profile molds in combination with the characteristics of the unified model, saving resources.In addition, Zhongwang Group has also formulated a strict quality control system for the material confusion that is prone to common interchange, which solves the identification problem of the same and similar products, and achieves the uniqueness and traceability of the identification of all products.

Zhongwang in the “Fuxing” family

It is understood that the vehicles currently running on high-speed railways in China are basically aluminum extrusion car bodies. Among them, all high-speed train bodies with speeds above 350 kilometers per hour use lightweight aluminum extrusion cars.

Zhongwang Group, as the main supplier of aluminum extrusion materials for the entire vehicle body of the “Fuxing” in service, is more than tens of types of aluminum extrusions for the Chinese standard EMU “Fuxing” with speeds ranging from 250 kilometers per hour to 350 kilometers per hour. Materials provide deep-processed product supply. Over the years, Zhongwang Group has made great efforts in the technological innovation of aluminum used in rail vehicles with its technological R&D innovation and experience in rail transit projects, such as greatly increasing the width and height of aluminum profiles, and improving the level of lightweight.

It is reported that Zhongwang Group has more than 100 aluminum extrusion production lines and has introduced two world-leading 225MN super-large extrusion presses. It is the technical support provided by its own excellent R&D team and long-term cooperative research institute. Zhongwang is currently one of the few domestic companies that can develop and manufacture speeds from 160km/h, 250km/h, 350km/h, 380km/h to 400km. /h High-speed rail car body aluminum extrusion products enterprises. Some products with super large cross-sections, such as the extruded skin profiles of the front part of the high-speed railway, the integrated coupler panel of the Fuxing train, the integrated underframe side beam bending, the integrated skirt board, etc., at present, there are only a few companies such as Zhongwang Group in China. Able to produce.

The relevant person in charge of Zhongwang Group said, “As China’s high-speed rail goes global, the members of the’Fuxinghao’ family are constantly iterating and updating. China’s high-speed rail leads the new trend of low-carbon economy. Zhongwang Group will rely on its own products, technology, equipment, The comprehensive strength of the team and the accumulation of rail transit projects, the integration of upstream and downstream industry chain resources to play a synergistic effect, and relying on its own industry leading advantages, provide better quality and higher value-added rail transit intensively processed products, and help China rail transit achieve faster and more Good development.”