China's first remanufactured shield machine using domestic main bearings was successfully rolled off in Hefei. This indicates that China Railway Tunnel Group and Luoyang LYC Bearing Co., Ltd. (hereinafter referred to as Luozhou) jointly tackle the bottleneck of the main bearing of the shield machine, realize the localization of the main bearing of the shield machine, and end the long-term dependence on imports of high-end bearings in China.
Shield machines are widely used in urban rail transit construction, railway and highway tunnel projects, and water diversion projects. At present, a large number of shield machines face serious performance degradation, increasing use costs and even scrapping, and remanufacturing them have significant social and economic benefits. However, the key component of the shield machine, the main bearing manufacturing technology, has been monopolized by a few well-known bearing companies in the world and is the bottleneck for the remanufacturing of shield machines.
In 2014, China Railway Tunnel Group pioneered the adoption of scientific research + manufacturing order-based production mode, and cooperated with Luo axis to give full play to their respective advantages. The State Key Laboratory of Shield and Tunneling Technology and the National Key Laboratory of Aviation Precision Bearings were used. Join forces to launch an impact on the localization of the main bearings of the shield machine.
“After tackling the problem, we achieved breakthroughs in raw material design, bearing structure design, heat treatment technology research, precision manufacturing technology, testing technology and assembly technology, and created 6 independent intellectual property rights and main bearing materials for shield machine. Processing, testing and other special standards." Luo axis related person in charge, the main bearing diameter of this line is 2.6 meters, can meet the diameter of 6 meters to 7 meters of shield machine for more than 15,000 hours of continuous work. This shows that China has mastered the manufacturing technology of the main bearing of the shield machine, breaking the technological monopoly of a few multinational corporations, and has taken a crucial step to realize the comprehensive localization of the shield machine.
Wang Xiaoyang, Director of the Division of Energy Conservation and Comprehensive Utilization of the Ministry of Industry and Information Technology, Su Zimeng, Executive Vice President of China Construction Machinery Industry Association, Secretary of the Party Committee of China Railway Tunnel Group, Chairman of the Board of Directors Yu Baolin, and General Manager of Luo axis, Sun Qilin, attended the day. Manufacture of shield machine off-line ceremony.
Yu Baolin, party secretary and chairman of China Railway Tunnel Group, said that the China Railway Tunnel entered the shield construction field earlier, and currently holds 87 sets of all-section tunnel boring machines. Based on the recovery and improvement of the performance of the original machine, the unit has formed the standard working process of the “eight-step method†for shield remanufacturing in many years of exploration, formulated the inspection system and standards for the shield, and introduced the professional equipment supervision mechanism. It has solved the problems of “remanufacturing standardsâ€, “market recognitionâ€, “professional subcontracting†and “component inspectionâ€, and has become a nationally recognized pilot unit for shield remanufacturing and industry-leading enterprises. In 2016, the Ministry of Industry and Information Technology identified the pilot unit for shield remanufacturing. The China Railway Tunnel Group is the only construction company to be included in the pilot unit of shield remanufacturing.
Luo Qi, general manager of the Luo axis, said in his speech that China Railway Tunnel Group Co., Ltd. dared to innovate and dare to try in the remanufacturing of the CT006H shield machine, breaking through the bottleneck of the shield machine re-manufacturing, using the independent knowledge developed by Luo axis. The domestically produced main bearing of the property rights has realized the re-manufacturing of the high-end equipment of the whole machine and key components, which has played a very good leading role in the remanufacturing of China's shield machine, and also greatly promoted the localization process of the main bearing of the shield. . The innovative model jointly developed by the host user and the bearing manufacturing enterprise will also serve as a demonstration for the localization of the main bearing of China's shield.
Pet Food Extruding Line is used to produce dry pet food for dog, cat, fish, bird, horse, rabbit, etc.
Pet Food Extruding Line focuses on the production of feeds for animals with a high emotional value but low economic usefulness, apart from the aspect of breeding. Nonetheless, balancing the components and gentle processing are at the center of the related quality considerations. Extrusion is therefore increasingly proving to be the right tool for modern Pet food. A complete feed, fed as a diet over a prolonged period of time, must ensure the vitality of the animal and prevent deficiencies. This is quite a challenge to the feed manufacturer in terms of the selection and composition of the raw materials, their optimal processing, and effective quality assurance. A large number of pet food products are made by extrusion.
Pet Food Extruding Line
Pet Chewing Gum Machine,Pet Food Production Line,Dog Food Maker Machine,Dog Snacks Making Machine
Jinan Darin Machinery Co., Ltd. , https://www.globaldarin.com