What's the biggest crankshaft you've ever seen? On a tractor, car or truck? See if this one below is big enough.
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This is a 12S90ME-C crankshaft with a total length of 23 meters and a weight of nearly 460 tons. It is installed in the heart of the world's largest and latest 21,000TEU standard container ship first built by China.
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Marine crankshafts have almost strict requirements on precision, and there are more than 700 detection parameters. Any error in any process will be an irreversible disaster.
Next, let's take a look at how this crankshaft is made through this video:
The manufacturing capacity of large crankshafts is an important symbol to measure the level of a country's shipbuilding industry. The good news is that our manufacturing capacity is still improving.
Just three months ago, the W12X92 marine crankshaft manufactured by Shanghai Electric Marine Crankshaft Co., Ltd. officially rolled off the production line. The crankshaft adopts a spliced structure, with a total length of 23.5 meters and a weight of 488 tons. It has become one of the heaviest marine crankshafts in the world. one.
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The marine crankshaft is a high-power low-speed marine diesel engine crankshaft. It is an ultra-long and overweight product. It is processed by segmented (two-stage) splicing, which has reached the processing limit of existing equipment. In the manufacturing process, in order to ensure the quality control of the "red sleeve" of the marine crankshaft, the process requirement that the center deviation is less than 2 mm is met.
