Low plastic aluminium piston alloy

Abstract

A low-plasticity Al-alloy for piston is prepared from low-plasticity cast Al-alloy as basic component, As-enriched RE mixture, Sn, Pb, Zn, Cr and Ti. Its advantages are low linear expansibility, dnd high strength, hardness, volume stability and machinability.

Description

technical field [0001] The invention relates to an alloy material with aluminum as the basic component, especially a low-plasticity aluminum piston alloy used for manufacturing pistons of internal combustion engines and compressors. Background technique [0002] Pistons in internal combustion engines and compressors are extremely important parts, generally made of cast aluminum alloy, and the composition and content of alloy materials play a key role in the mechanical properties, processability and volume stability of the pistons. According to the current national standards, cast aluminum alloys use aluminum as the basic component and contain Cu, Mh, Si, Fe, Mn, and other elements, and the content of each component is within a certain range. Practice has proved that the existing cast aluminum alloys have certain limitations in terms of hardness, tensile strength, volume stability and cutting performance. It is difficult to meet the design and use requirements for the product...

AI Technical Summary

Problems solved by technology

Practice has proved that the existing cast aluminum alloys have certain limitations in terms of hardness, tensile strength, volume stability and cutting performance. It is difficult to meet the design and use requirements for the production of convex and variable elliptical aluminum alloy pistons with special requirements.