Forward Roll Forming Machinery Manufacturing Co., Ltd. , http://www.czrollformingmachine.com
The production of diesel engines and crankshafts for large ships has always been the core technology of monopoly by foreign countries. Through independent innovation, China has ended the embarrassing situation of “ships, machines and other axesâ€, and has made the “China Heart†for large ships.
The heart of the ship is the diesel engine, and the most critical part of the diesel engine is the crankshaft. The powerful power of the diesel engine is transmitted to the propeller through the crankshaft to push the ship forward. I take the crankshaft of the car in our daily life. Then, how big is the crankshaft on the 10,000-ton wheel? This is the behemoth that is turning behind me.
Don't look at this behemoth as a tens of tons of "iron shovel", but it is quite complicated in design and manufacturing process.
Lin Yiwu, deputy general manager of Shanghai Marine Crankshaft Co., Ltd.: Its finishing requirements are very high, and the amplitude of vibration during rotation cannot be less than one-fifth of that of human hair.
Due to the lack of mastery of core technology, the cost of importing crankshafts in China in the past was as high as 40 to 50 million US dollars. Even some shipyards often could not buy crankshafts at several times higher prices, and the shipbuilding cycle was reluctantly lengthened. During the fifteenth period, with the support of the national science and technology plan, China ended the long-term dependence on import of marine crankshafts.
Lin Yiwu, deputy general manager of Shanghai Marine Crankshaft Co., Ltd.: This year we can reach 80 crankshafts per year. Next year, we can reach 200 crankshafts per year.
The technical breakthrough of the marine crankshaft makes China's marine diesel engine beat the "Chinese heart." In front of this five- or six-story big guy, it is a low-speed marine diesel engine independently developed by China. Soon it will be installed on China's most advanced 300,000-ton super-large oil tanker.
Yang Jiafeng, chairman of Hudong Heavy Machinery Co., Ltd.: It has the lowest energy consumption and the cleanest, and our technical level is comparable to that of the world's top companies.
Because of this superior performance, low-speed marine diesel engines are widely used in a variety of advanced large ships. Nowadays, the domestic high-power low-speed diesel engine with the largest cylinder diameter and the highest power is also born here. Hudong Heavy Machinery has become one of the few companies in the world to master this technology.