Marine crankshaft is the core component of Marine engine, its quality is directly related to the efficiency and safety of the ship. Therefore, the production process of crankshaft forgings is very important to ensure the quality of crankshaft. This paper will briefly introduce the production technology of Marine crankshaft forgings.
Raw material preparation
Selection of high-quality steel: crankshaft forgings generally use high strength, high toughness, corrosion resistance of high-quality steel, such as alloy steel, stainless steel, etc.
Steel pretreatment: Pre-treatment of steel cutting, straightening, polishing, etc., to ensure that the surface of steel is smooth and without defects.
Forging technology
Heating: The steel is heated to the appropriate temperature to make it have good plasticity and toughness.
Forging: The use of forging hammer, hydraulic press and other equipment to forge the steel to form the required shape and size.
Cooling: The forged steel is cooled quickly to prevent deformation and cracking.
Processing technology
Roughing: roughing the forged steel to remove excess material and initially form the shape of the crankshaft.
Finishing: finishing the crankshaft after rough machining, such as turning, milling, etc., to make it meet the design requirements.
Surface treatment: Surface treatment of the processed crankshaft, such as spray painting, galvanized, etc., to improve its corrosion resistance and beauty.
Inspection and packing
Inspection: Strictly inspect the processed crankshaft to ensure that its size, shape and surface quality meet the design requirements.
Packing: The inspected crankshaft is packed to prevent it from being damaged during transportation.
The production process of Marine crankshaft forging involves many links, including raw material preparation, forging process, processing technology, inspection and packaging. Only by strictly controlling the quality of each link can we produce high-quality Marine crankshaft forgings. At the same time, with the development of science and technology and the improvement of environmental protection requirements, the production process of Marine crankshaft forgings will continue to optimize and innovate.
