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Al-Mn alloy and production method thereof

A technology of an aluminum-manganese alloy and a production method, applied in the field of aluminum alloys, can solve the problems of limited improvement of alloy performance, limited strength effect, expensive rare earth elements samarium and samarium, etc.

Active Publication Date: 2021-07-06
YONGJIE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, by adding a certain amount of zirconium to the aluminum-manganese alloy, the use of finely dispersed Al 3 The inhibition of Zr relative to recrystallization retains the deformed structure of the alloy, thereby increasing the strength of the alloy, but the effect of improving the strength is limited; there are also rare earth elements yttrium and samarium added to improve the strength of the alloy
However, due to the high price of rare earth elements samarium and samarium, it is difficult to realize the application, and the improvement of the performance of the alloy is also limited

Method used

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  • Al-Mn alloy and production method thereof

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Experimental program
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Effect test

Embodiment 1

[0034] Embodiment one, the present invention provides a kind of production method of aluminum-manganese alloy, and this production comprises the following steps:

[0035] Step S1, ingredients: Al-Mn alloy raw materials are formulated according to the following components and mass percentages: 0.65% silicon, 0.25% iron, 1.75% manganese, 0.22% copper, 0.16% magnesium, 0.18% titanium, 0.12% zirconium, and the balance is Aluminum and unavoidable impurities.

[0036] Step S2, smelting and refining: put the aluminum-manganese alloy raw material in a smelting furnace for smelting to obtain an aluminum-manganese alloy melt; transfer the aluminum-manganese alloy melt to a refining furnace for refining and electromagnetic stirring treatment, wherein the The temperature of the aluminum-manganese alloy melt when it is transferred out of the melting furnace is 745°C, and the refining temperature of the refining furnace is 735°C.

[0037] Step S3, casting: casting the refined aluminum-mang...

Embodiment 2

[0041] The production method in Embodiment 2 is substantially the same as that in Embodiment 1, and the same parts of the two will not be repeated here. The difference between Embodiment 2 and Embodiment 1 is that when step S4 is performed, the hot rolling The heating regime is slightly different, below for the step 4 of embodiment two to illustrate:

[0042] Step S4, face milling, heating, hot rolling, cold rolling, and finished product annealing: the aluminum-manganese alloy ingot is subjected to face milling, heating, hot rolling, cold rolling and finished annealing in sequence; wherein, the The heating system adopts a two-stage heating system. First, the aluminum-manganese alloy ingot that has been milled is raised to 375°C at a heating rate of 30°C / h and kept for 12 hours, and then heated to 480°C at a heating rate of 30°C / h. ℃ heat preservation for 3 hours and start hot rolling, the final rolling temperature of the hot rolling is 310 ℃; the total reduction rate of the ho...

Embodiment 3

[0045] The production method in the third embodiment is roughly the same as that in the first embodiment, and the same parts of the two will not be repeated here. The difference between the third embodiment and the first embodiment is that when step S1 is performed, the aluminum-manganese alloy The mass percentages of each component in the raw material are different, thereby causing the thickness of the aluminum-manganese alloy plate and strip produced in step 4 to be inconsistent, and the steps 1 and 4 of the third embodiment are described below:

[0046] Step S1, ingredients: Al-Mn alloy raw materials are prepared according to the following components and mass percentages: 0.75% silicon, 0.35% iron, 1.55% manganese, 0.15% copper, 0.24% magnesium, 0.15% titanium, 0.2% zirconium, and the balance is Aluminum and unavoidable impurities.

[0047] Step S4, face milling, heating, hot rolling, cold rolling, and finished product annealing: the aluminum-manganese alloy ingot is subjec...

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Abstract

The invention provides a production method of an aluminum-manganese alloy, wherein the mass percent of each component is: silicon 0.6%-1.0%, iron 0.1%-0.4%, manganese 1.0%-1.8%, copper 0.1%-0.3%, Magnesium 0.15%-0.35%, titanium 0.1%-0.2%, zirconium 0.1%-0.3%, the balance is aluminum and unavoidable impurities; the production steps of its alloy are: batching, then smelting and refining to obtain an aluminum-manganese alloy melt, and The aluminum-manganese alloy melt is cast to form an aluminum-manganese alloy ingot, and the aluminum-manganese alloy ingot is milled, heated, hot-rolled, cold-rolled and finished annealed to obtain aluminum-manganese alloy plates and strips of different thicknesses. Compared with related technologies, the aluminum-manganese alloy prepared by the production method of the present invention has high strength after high-temperature brazing.

Description

【Technical field】 [0001] The invention relates to the technical field of aluminum alloys, in particular to an aluminum-manganese alloy and a production method thereof. 【Background technique】 [0002] Because aluminum alloy materials have the characteristics of good thermal conductivity, low density, excellent machinability and welding performance, high temperature corrosion resistance, low cost and recyclability, brazed aluminum heat exchangers have gradually replaced copper alloys and are widely used in various heat exchange devices. Heat exchange devices will face problems such as high pressure and long working hours during service, and with the increasing requirements for lightweight of automobiles and various equipment, the aluminum alloy materials used in heat exchange devices are also getting thinner and thinner. There is a need to further increase the strength of the alloy after brazing. [0003] In related technologies, aluminum-manganese alloys used in aluminum he...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04
CPCC22C1/026C22C21/00C22F1/04
Inventor 曹城陈登斌宋盼周然贺有为习羽万泽全
Owner YONGJIE NEW MATERIAL CO LTD