The world's largest 24,000 TEU methanol dual-fuel container ship crankshaft successfully rolled off the production line
On September 30, 2024, Dalian Heavy Industry Equipment Group held a ceremony for the off-line production of the 24,000 TEU methanol dual-fuel container ship crankshaft (12G95ME-C10.5) on September 29. This crankshaft, developed by Dalian Huarey Marine Crankshaft Co., Ltd., a subsidiary of Dalian Heavy Industry Equipment Group, is the world's first and largest 24,000 TEU methanol dual-fuel container ship crankshaft, which successfully passed joint inspections by MAN Patent Company, ABS American Bureau of Shipping, and the customer.
According to official information, the 12G95ME-C10.5 marine crankshaft features a butt-joint structure, with a total length of 23.67 meters and a weight of 539 tons. It is a key component developed by MAN Patent Company for methanol dual-fuel propulsion engines and is installed on the 24,000 TEU methanol dual-fuel container ship manufactured in China.
This crankshaft posed significant challenges in manufacturing and processing due to the lack of reference standards. To address this, the technical team at Dalian Huarey Marine Crankshaft Co., Ltd. undertook a comprehensive upgrade and transformation of the processing tools, making bold innovations and improvements in processing technology and tool selection. Ultimately, they successfully overcame nearly ten technical difficulties, including exceeding limits in crankshaft processing diameter and weight. After joint inspections by MAN Patent Company, ABS American Bureau of Shipping, and the customer, all testing data met quality standards and drawing requirements.
Notably, from the arrival of the crankshaft blank to the completion of final inspection, Dalian Huarey Marine Crankshaft Co., Ltd. leveraged its mature technical expertise to produce this "big guy" in just 57 days, setting a record for the production of super-large butt-joint crankshafts in the company.