The 82T crankshaft is 13 meters long and weighs 235 tons. It is tailor-made for the 400,000 tons ore ship. It is the most developed and the most powerful crankshaft in China. This model has up to 905 crankshaft detection data, more than 100 data detection standards higher than the Mann series 90 crankshaft, with 3375 mm long stroke, 1075 mm longer than the Mann series 90 crankshaft stroke, the accuracy requirements are not harsh It is extremely difficult to manufacture. In the process of development, Heavy Industry·Hangzhou Group relies on excellent equipment and rich manufacturing experience, in accordance with the standards of creating high-quality crankshafts, giving full play to the ingenuity of experts, engineering and other professionals, focusing on single-piece processing, hot-loading, The rigorous process plan and quality control plan have been formulated for each process such as lifting and overall finishing. Based on a large number of data analysis and modeling calculations, new technologies such as special machining tools and special tooling have been developed and applied to overcome the cranking R. Five major technical issues, such as root processing, hot charging temperature and straightness control, and overall lifting and finishing, ensure that the product quality meets the design patent company standards and the classification society technical conditions.
The successful development of the 82T crankshaft is of great significance. First, the logo is focused on the work. The lifting group has the ability to develop all types of low-speed marine crankshafts of the Mann series and the Wärtsilä series, and has accumulated valuable experience for the company to develop larger models of crankshafts. The second is to end the long-term dependence on imports of this type of crankshaft, filling the domestic gap. The third is to break through the bottleneck of China's super-large crankshaft manufacturing and provide a strong guarantee for national economic security. The fourth is to provide support for the core components of China's large-scale ships, and enhance the overall level and international competitiveness of China's shipbuilding industry.
Since the development of the first Mann 50 crankshaft in December 2007, Dalian Heavy Industry·Zhangzhong Group has adhered to the combination of independent innovation and introduction of innovation. In June 2008, it successfully developed the first Mann series 70 crankshaft, 2009. In March, it successfully developed the first domestic Mann series 90-type crankshaft. In October 2010, it successfully developed the first Wärtsilä series 58TD crankshaft. In June 2011, it successfully developed the first largest Wärtsilä in China. Series 82T crankshaft. At present, more than 120 types of crankshafts of various types have been produced, and serialized and batch production of large and super large crankshafts with international leading level has been realized. The product quality has been highly recognized by users, and the market share has increased year by year. The Heavy Industry and Crane Group is stepping up the implementation of the second phase of the crankshaft project. After the completion of the project, it will form an annual production capacity of 150 large-scale marine crankshafts and become a world-class crankshaft development base.
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