High-strength low-hardness low-chromium medium-manganese alloy for motor rotor

Abstract

The invention discloses a high-strength low-hardness low-chromium medium-manganese alloy for a motor rotor. The high-strength low-hardness low-chromium medium-manganese alloy for the motor rotor comprises, by mass, no less than 3.3% and no more than 3.8% of C, no less than 3.3% and no more than 4.3% of Si, no less than 5.7% and no more than 7.0% of Mn, no less than 0.01% and no more than 0.15% of P, no less than 0.01% and no more than 0.02% of S, and no less than 0.025% and no more than 0.05% of Re, with the balance being Fe and unavoidable impurities. The alloy provided by the invention has excellent hardness and rigidity, low chromium content, medium manganese content and low cost, and the strength of rigidity of the alloy can meet demands of actual production.

Description

technical field [0001] The invention relates to the field of alloys, in particular to a high-strength hard low-chromium medium-manganese alloy for motor rotors. Background technique [0002] At present, during the use of the motor rotor, the hardness of the alloy determines the amount of wear of the alloy. The hardness of the existing high-chromium alloy is generally HRC55-60, which has smaller wear and loss than medium-chromium alloys and low-chromium alloys. Alloy hardness is too high and it is easy to cause adverse consequences of fracture. Therefore, in the process of producing the alloy, it is necessary to ensure that the alloy has high hardness and good toughness. Contents of the invention [0003] In order to solve the technical problems existing in the background technology, the present invention proposes a high-strength hard low-chromium manganese alloy for motor rotors, which has excellent hardness and hardness, low chromium content, medium manganese content, low...