High-forgeability manganese-aluminum-iron-bronze alloy and smelting method

Abstract

The invention provides a high-forgeability manganese-aluminum-iron bronze alloy and a smelting method, the alloy material comprises the following components in percentage by mass: 7.0-10.0% of Al, 10.0-15.0% of Mn, 2.0-5.0% of Fe, 1.0-5.0% of Ni, less than or equal to 0.2% of Zn, less than or equal to 0.1% of Si, less than or equal to 0.02% of Pb, less than or equal to 0.03% of Sb, less than or equal to 0.05% of C, less than or equal to 0.02% of As, less than or equal to 0.02% of Bi and the balance of Cu and inevitable impurities, the alloy material is subjected to vacuum induction smelting, and the alloy material is subjected to high-temperature heat treatment, the method can effectively solve the problems of poor forgeability of the manganese-aluminum-iron-bronze alloy, many casting defects of large-size cast ingots, looseness, shrinkage cavities and high defect control difficulty.

Description

technical field [0001] The invention relates to the field of copper alloy materials, in particular to a high-forgeability manganese-aluminum-iron-bronze alloy and a melting method. Background technique [0002] Cast manganese-aluminum-iron-bronze alloy has the characteristics of good corrosion resistance, small specific gravity, high strength, excellent resistance to seawater erosion and cavitation corrosion, and is widely used in propeller and pump valve systems, such as GJB3341- 2018 "ship propeller The ZCuAl8Mn14Fe3Ni2, ZCuAl8Mn13Fe3Ni2 grades listed in the Specification for Copper Alloy Castings and the ZCuAl8Mn13Fe3, ZCuAl8Mn13Fe3Ni2 and ZCuAl8Mn14Fe3Ni2 grades listed in GB / T1173-2013 "Casting Copper and Copper Alloys", but these copper alloy grades are cast alloy grades, usually used Centrifugal casting or sand casting production, such as the high manganese aluminum bronze ZCuAl8Mn13Fe3Ni2 in the paper "Study on Vertical Centrifugal Casting Process of Large High Mangan...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a high-forgeability manganese-aluminum-iron-bronze alloy and its smelting method, which can effectively solve the problem of poor forgeability of the manganese-aluminum-iron-bronze alloy and many casting defects of large-scale ingots, such as looseness and shrinkage. Pores and defects are difficult to control

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