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On September 1, Hualing's single-class annual production capacity of 50,000 heavy-duty trucks, located in the southern area of ​​the Maanshan Development Zone, completed the stamping, welding and painting shop and was formally put into production.
This project is the most important part of the “Twelfth Five-Year Plan†development plan of Hualing Xingma Automobile Group. It officially started construction in June 2010 with a total investment of 1.184 billion yuan and a total construction area of ​​140,000 square meters, including stamping and welding equipment. The four major production lines and related auxiliary facilities for painting and final assembly were installed. The final assembly line was officially put into use in August 2011.
The project reflects advanced features, energy conservation, environmental protection, humanization, high efficiency, and informationalization in terms of design concepts. The factory buildings have good daylighting properties and a higher safety factor. Workers' work environment is greatly improved, and many processes and equipment have reached the international advanced level. It will further improve product quality, increase production efficiency, and reduce labor intensity. It is one of the most advanced heavy-duty truck production bases in China.
The body stamping production process includes 4 stamping lines and 2 open fly shear lines. The 4 body press lines consist of 20 500 to 2400 ton large presses of different tonnages to form a three-dimensional press. The presses are all well-known CNC closed-type four-point mechanical presses in China, of which 2400 ton presses are domestic The largest multi-link mechanical press. Taiwan's introduction of open fly shear lines for cutting, can greatly improve the material utilization, production efficiency and feeding accuracy. Traffic is the German imported Abou hoist European structure, safe and reliable.
The welding process includes two fully automated flexible welding lines, one for the production of the Xingkai Ma series, and one for the production of the Hualing heavy truck and the Hualing Star series. The main welding line is fully automated. 55 sets of Japanese FANUC and NACHI robots complete spot welding and workpiece handling. The automation rate reaches 100%, which ensures the white body strength requirements and dimensional stability. It sets a benchmark for domestic heavy truck welding production lines. Welding packaging production line has more than 200 sets of welding fixtures and 400 sets of welding equipment. Workpieces are transferred between stations using friction lines, spreaders, etc. to reduce labor intensity; hydraulic molding machine is used for door molding, convenient operation, forming Good performance; auxiliary welding equipment used in Germany KOCO stud welding machine, the United States GRACO pump, Japan Panasonic welding machine and other international famous brands; At the same time, the cab stringer assembly and other key processes using medium frequency inverter integrated welding clamp and other energy-saving , environmental protection, excellent welding performance and advanced welding equipment.
The paint shop is composed of a large two-story three-dimensional steel structure factory building and is partially equipped with three floors. The coating process consists of a pre-treatment cathodic electrophoresis system, a drying system, a Venturi paint system and an advanced mechanized conveyor system. The pre-treatment electrophoresis line adopts a cumulative chain transmission method, and the tank body adopts a closed structure with a ship-shaped groove and a spray-leaching combination treatment method, which can realize full-automatic production. The pre-treatment materials adopt domestic advanced nickel-free phosphating products, effectively ensuring the quality of the phosphate film and environmental protection without heavy metal pollution. The electrophoretic paint adopts international famous brands, which is safe and environment-friendly and has high utilization rate.
The assembly process consists of two symmetrical assembly lines that allow simultaneous production of two lines. The entire vehicle conveyor line is divided into a single-chain conveyor system and a trolley return system. The single-chain conveyor system trolley can be automatically separated from the traction chain, and the trolley can be automatically raised and lowered through head-and-tail elevators. At the same time, the single-chain conveyor system of the entire vehicle conveyor line adopts a hill-climbing structure, which reduces the height of the chassis operation, and uses the manipulator and tightening machine to install tires in the climbing section, which not only reduces the labor intensity of workers, but also optimizes the assembly process. The exhaust gas collecting and discharging system adopts a room-type structure, which enables the vehicle to start debugging in the smoke collection room, thus solving the problem of exhaust gas collection and exhausting. The workshop also has an advanced ANDON system, which is a comprehensive information management and control system for automobile production that enables rapid information transfer, material calling, equipment management, equipment data collection, real-time problem display, statistical analysis, and movable rate management. , report generation and other functions.