Manufacturing method of aluminum alloy for yacht hull

Abstract

The invention belongs to the technical field of manufacturing of marine aluminum alloys and relates to a manufacturing method of an aluminum alloy for a yacht hull. The manufacturing method comprisesthe following technological steps that a 5083 aluminum alloy ingot is sawed and subjected to face milling, the sawed and face-milled 5083 aluminum alloy ingot is fed into a heating furnace to be heated at the temperature of 450-500 DEG C for 3-5 hours, and the heated 5083 aluminum alloy ingot is discharged out of the furnace to be subjected to hot rough-rolling by 25-30 passes to form an intermediate slab with the thickness being 20-25 mm; the intermediate slab is fed into a finish rolling mill to be subjected to three continuous rolling, the rolling-starting temperature of the finish rollingmill is 350-400 DEG C, the thickness of a rolled aluminum alloy coil is 7-12 mm, and the coiling temperature is 230-270 DEG C; and the two sides of the hot-rolled and offline aluminum alloy coil are blown by a fan, so that the hot-rolled and offline aluminum alloy coil is rapidly cooled to the room temperature. The problems that the mechanical strength of an existing H321 state 5083 aluminum alloyplate with the thickness being 7-12 mm is improved mainly through cold deformation, the corrosion resistance of the aluminum alloy is improved through stable annealing, the technological system has many procedures, and the production efficiency is low are solved.

Description

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AI Technical Summary

Benefits of technology

This patented describes methods for making Aluminum (Al) castings with improved efficiency compared to existing processes such as casting or extrusion. By reducing the amount of impurities from the raw material beforehand, these improvements lead to better results when processed into final product shapes like rods without any cracks. Additionally, there has been developed various techniques aimed towards controlling the coolant flow rates during the hot rolling process to improve stability and prevent crack formation caused by thermal shock. Overall, these technical means help achieve more efficient and cost-effective production of thin walled aluminium(AZ), particularly those made up of 6-10 mm diameter sections, resulting in increased durability and reduced costs associated with shipping.

Problems solved by technology

The technical problem addressed by this patented text relates to finding ways to improve the durable life (mechanic) or reduce costs associated with producing thin sheet metal made up mostly of pure Al metals like 5063.

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