High-strength aluminium alloy plate and production method thereof

Abstract

The invention relates to a high-strength aluminium alloy plate and a production method thereof. The high-strength aluminium alloy plate is made from the components in parts by weight: 0.4-0.8 part ofSi, 0.3-0.6 part of Fe, 0.2-0.3 part of Cu, not more than 0.15 part of Mn, 1.0-1.15 parts of Mg, 0.1-0.3 part of Cr, not more than 0.05 part of Zn, 0.02-0.03 part of Ti, not more than 0.01 part of other impurities and the balance of Al, wherein the total amount is 100 parts. The production method comprises following steps: smelting, refining, stewing, casting, face milling, hot rough rolling, hotprecision rolling, cold rolling and online continuous quenching, wherein furnace temperature is 590-610 DEG C, and the quenching speed is 0.7-2.0m / min; and then carrying out secondary cold rolling till a aluminium alloy platen is rolled to be 0.8-10mm; and finally obtaining a finished product through finishing and artificial ageing treatment. The plate has the advantages of high strength, corrosion resistance, good welding performance and the like; the adopted hot rolling method is a continuous quenching process, thereby realizing the rapidity and the continuity of uncoiling quenching and shortening the production cycle, therefore being beneficial to energy saving and consumption reducing and popularization and application.

Description

1. Technical field: [0001] The invention relates to an aluminum alloy plate, in particular to a high-strength aluminum alloy plate and a production method thereof. 2. Background technology: [0002] With the advancement of science and technology, the application of aluminum alloy plates is becoming more and more widespread. 6061 aluminum alloy is widely used in aviation, aerospace, shipbuilding, mechanical equipment, mold manufacturing, Electronic and electrical, hardware products and handicrafts and other industries. [0003] The current 6-series aluminum alloy processing and production cycle in China is long. The quenching furnace used in production is to put the material coil into the furnace as a whole. Not too big, the material roll is still in the furnace, and there is no roller table in the furnace. There are two obvious disadvantages in adopting this quenching method that the whole roll is heated and then rolled out of the furnace: one is that the material is not h...

AI Technical Summary

Problems solved by technology

There are two obvious disadvantages in adopting the quenching method of heating the whole roll into the furnace and then taking the whole coil out of the furnace: one is that the material is heated unevenly during heating, and the other is that the whole time from the out of the furnace to the cooling of the material is long, resulting in a long production cycle.

After testing, the elongation and strength of the aluminum alloy profile are improved to a certain extent by this method, but the whole production cycle is longer, the energy consumption is higher, and the quality of the obtained aluminum alloy plate is not ideal

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