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Method for producing high-performance aluminum alloy plate strips via continuous roll casting of sheet billets

A technology of aluminum alloy strips and thin slabs, which is applied in metal rolling and other directions, can solve problems such as large compositional differences, uneven microstructures, and low yields, so as to reduce energy consumption, improve material utilization, and improve processing performance Effect

Active Publication Date: 2019-10-25
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the existing problems of large-size aluminum alloy plate ingots with large component differences in the thickness direction, uneven microstructure, and low yield, the present invention provides a method for producing high-performance aluminum alloy plates and strips by continuous casting and rolling of thin slabs. The method has short technological process, low investment cost, low energy consumption and emission, high slab quality and high yield of aluminum alloy plate and strip production method

Method used

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  • Method for producing high-performance aluminum alloy plate strips via continuous roll casting of sheet billets
  • Method for producing high-performance aluminum alloy plate strips via continuous roll casting of sheet billets
  • Method for producing high-performance aluminum alloy plate strips via continuous roll casting of sheet billets

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Effect test

Embodiment 1

[0040] An industrialized production line arrangement for the production of high-performance aluminum alloy plates and strips by continuous casting and rolling of thin slabs, such as figure 1 Shown: Melting Furnace Static Holding Furnace-Filtration Device-Degassing Device-Launder-Continuous Casting Roller-Pinch Roller-Slitting Machine-Coiler-Aluminum Coil Rapid Transport System-Tunnel Furnace-Uncoiler-Three Racks Hot continuous rolling mill-shearing machine-coiler, according to the production capacity configuration, there can be multiple continuous casting and rolling production lines; the corresponding equipment structure diagram is as follows figure 2As shown, it includes: aluminum alloy smelting furnace 1, static holding furnace 2, filter box 3, degassing box 4, launder 5, continuous casting and rolling machine 6, pinch roll 7, first dividing shear 8, first double Coiler 9, fast delivery roller table 10, tunnel furnace 11, double uncoiler 12, three-stand hot continuous roll...

Embodiment 2

[0053] In this embodiment, the process and method for producing aluminum alloy sheets by continuous casting and rolling combined with continuous hot rolling for 1100 aluminum alloy thin slabs utilizes the device in embodiment 1, and the specific steps are as follows:

[0054] (1) Smelting and refining:

[0055] According to the standard composition of 1100 aluminum alloy, by weight percentage (wt%) (Si+Fe): 0.95, Cu: 0.05-0.20, Zn: 0.10, Mn: 0.035, Al: balance. Industrial pure aluminum, aluminum-silicon, aluminum-copper and other intermediate alloys are weighed in equal proportions and put into a melting furnace for melting. After all the industrial pure aluminum ingots are melted first, then the above-mentioned intermediate alloys are added in turn, and the molten aluminum is transferred to a heat preservation and static furnace for standing. When the temperature of the molten aluminum in the static furnace is 710°C, the melt is purified. The above-mentioned melt purificatio...

Embodiment 3

[0068] This embodiment is aimed at 3003 aluminum alloy thin slabs, and the continuous casting and rolling combined with hot continuous rolling is used to produce aluminum alloy sheets. The device in embodiment 1 is used. The specific steps are as follows:

[0069] (1) Smelting and refining:

[0070] According to the standard composition of 3003 aluminum alloy (wt%) Si: 0.6, Cu: 0.1, Zn: 0.1, Mn: 1.2, Fe: 0.7, Al: balance, industrial pure aluminum, aluminum silicon, aluminum copper and other intermediate alloys, etc. Proportional weighing, put into the melting furnace for smelting, after the aluminum ingots are completely melted, add the above-mentioned intermediate alloys in turn, transfer the aluminum water to the heat preservation static furnace for standing, when the temperature of the aluminum water in the static furnace is 710-750 ℃, the melt purification treatment is carried out. The melt purification treatment specifically refers to the use of SNIF rotary jet degassing ...

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Abstract

The invention relates to a method for producing high-performance aluminum alloy plate strips via continuous roll casting of sheet billets. According to the method, an aluminum alloy melt is firstly refined, and water cooling casting rolls, the surfaces of which are lubricated by nano graphite coatings are adopted to carry out double-roll type sheet billet continuous roll casting on the aluminum alloy melt so as to obtain a continuous roll cast sheet billet; and heat leveling, concurrent heating temperature equalization processing, heat preservation and uncoiling are carried out for carry out host finishing. According to the method, the processes such as semi-continuous casting, face milling, homogenizing heat treatment, heat rough rolling and intermediate annealing in the traditional casthot rolling cogging method are saved, the aluminum alloy plate strip yield is remarakbly improved by more than 20%, the production period is shortened from 20 days to about 0.5 day; the production efficiency is remarakbly improved; and while the production process continuity is improved, the production cost is reduced by more than 30%, the discharge of the pollutants such as carbide / sulfide and the like is decreased by more than 50% and great economic benefit and social benefit are generated.

Description

technical field [0001] The invention relates to a method for producing high-performance aluminum alloy plates and strips by continuous casting and rolling of thin slabs, and belongs to the technical field of material metallurgy. Background technique [0002] In recent decades, the metal processing industry at home and abroad has been developing new technologies around saving energy, reducing emissions, reducing production costs, improving production efficiency and yield, and improving product quality, so as to achieve long-term and continuous energy saving and emission reduction, and improve quality. the goal of. At present, aluminum alloy slabs are mainly prepared by semi-continuous casting method and obtained by rolling large slabs. The thickness of the ingot is more than 600mm and the length is about 6-8m. After milling and other processes, the finished product rate is less than 70%. The high energy consumption of heat treatment and the discharge of pollutants are huge o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C21/00C22F1/04B21B1/26B21B3/00
CPCB21B1/26B21B3/00B21B2001/225B21B2003/001C22C1/026C22C1/03C22C21/00C22F1/04
Inventor 王昭东李勇贺晨许光明李家栋田勇王丙兴韩毅付天亮
Owner NORTHEASTERN UNIV LIAONING
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