Preparation method of aluminum-cladding brass alloy strip based on rotary infiltration

Abstract

The invention provides a preparation method of an aluminum-cladding brass alloy strip based on rotary infiltration. The preparation method comprises the following steps: copper and zinc are adopted as raw materials, the raw materials are dried and then are molten in a smelting device, then neodymium, lanthanum, manganese and iron are added sequentially, mixing is carried out, baked charcoal is adopted for covering, and thus alloy liquid is obtained; the alloy liquid is prepared into a tiny uniform isometric-crystal blank material by adopting a semicontinuous ingot casting process; the blank material is rolled by a hot rolling mill; a strip after the hot rolling is subjected to face milling and cold rolling; the strip after finish rolling is subjected to recrystallization annealing and finish rolling; the strip after heat treatment is completely soaked into a molten aluminum alloy melt, the strip rotates in the molten aluminum alloy melt within the limit that no severe stirring of the molten aluminum alloy melt is caused, and then stops rotating, the strip is taken out and cleaned, and thus the aluminum-cladding brass alloy strip based on the rotary infiltration is obtained. The aluminum-cladding brass alloy strip based on the rotary infiltration prepared by the preparation method is good in strength and ductility, the tensile strength is not lower than 580MPa, and the ductility is not lower than 10%.

Description

Technical field [0001] The invention belongs to the technical field of alloy materials, and specifically relates to a method for preparing an aluminum-coated brass alloy strip based on rotary infiltration. Background technique [0002] The most widely used copper-based elastic materials are tin phosphor bronze and brass. Brass is an alloy prepared from copper and zinc as the main raw material. Brass alloy strips are low-cost, easy to manufacture, beautiful in color, wear-resistant, corrosion-resistant, and have good plastic processing properties. They are widely used in invisible, electronic communications, etc. Field, has broad market prospects. But its strength is not high, the tendency of dezincification and stress corrosion cracking is large, and the comprehensive performance of the material is poor. Therefore, it is necessary to modify cheap brass by adding trace elements to improve alloy strength, hardness, elasticity, corrosion resistance, etc. [0003] At present, the de...

AI Technical Summary

Problems solved by technology

[0004] Pressureless infiltration is a new technology developed in recent years to prepare metal matrix composites with high volume fraction. The manufacturing cost of this technology is lower than that of powder metallurgy, pressure infiltration and other technologies, but it is superior to aluminum alloy melt, which is easily oxidized, and melt The existence of the oxide film on the surface makes the wettability of the melt and the cross section of the preform very poor. The commonly used pressureless infiltration process can only change the wettability of the cross section by increasing the temperature of the liquid metal, and the whole process needs to be protected by an inert gas, which is inefficient and prone to interface. reaction, so it is necessary to improve the impregnation process to improve the performance and production efficiency of composite materials