A kind of aluminum-manganese alloy and its powder metallurgy forming method

Abstract

The invention discloses an aluminum-manganese alloy and a powder metallurgical molding method thereof. The aluminum-manganese alloy comprises, by weight percent, 70% to 75% of aluminum and 25% to 30% of manganese. The powder metallurgical molding method of the alloy comprises the steps of firstly, preparing of raw materials, auxiliary materials, tools and devices; secondly, vacuum induction smelting of the alloy; thirdly, preparing of mother alloy powder; and fourthly powder metallurgical molding. The aluminum-manganese alloy is low in impurity content, fine in grain, uniform in component and high in manganese content; the powder metallurgical molding method of the alloy is high in purification, free of pollutants, free of waste gas, easy to control, stable in quality and high in yield.

Description

technical field

[0001] The invention relates to the field of aluminum alloy forming, in particular to an aluminum-manganese alloy and a powder metallurgy forming method thereof. Background technique

[0002] At present, the chemical composition of high-purity aluminum master alloy ingots in my country is in accordance with the HB5371-1987 standard, which stipulates that the Mn content of the aluminum-manganese master alloy is 9 to 11%, and the main impurity element content requirements are as follows: Si ≤ 0.04%, Fe ≤0.08%, Mg ≤ 0.05%, other single ≤ 0.05%, other sum ≤ 0.15%. The production of high-purity aluminum alloy requires the lower the impurity elements, the better. Therefore, higher requirements are put forward for the high-purity aluminum master alloy used. The published production method adopts the method of mixing, and the raw materials are 75Mn agent and electrolytic aluminum, which are melted in the furnace and kept for a sufficient time and stirred by mechanica...

Images