坡莫合金是铁镍系软磁合金的总称,它的主要特点是通过热处理后矫顽力(H_c)小,在弱磁场中有很高的起始导磁率(μ_o)和最大导磁率(μ_M),并有很好的防锈性能和加工性能,因此被广泛应用于航空电机、电器及电讯仪表上。但是合金的热处理规范对其磁性能的影响很大。我厂选用1J46的坡莫合金作电机控制系统的磁放大器,按照国内现行的热处理规范进行处理,往往由于生产厂家不同,炉批不同,热处理后的磁性能时高时低,甚至达不到技术标准要求。 1J46的磁性能要求为: Permalloy is the general name of Fe-Ni soft magnetic alloy. Its main feature is that the coercive force (H_c) is small after heat treatment, and has a high initial magnetic permeability (μ_o) and a maximum magnetic permeability ), And has good anti-rust properties and processing performance, it is widely used in aviation electrical, electrical and telecommunications instrumentation. However, the heat treatment of alloys has a great influence on the magnetic properties. I choose 1J46 permalloy alloy motor control system for the magnetic amplifier, in accordance with the current domestic heat treatment specifications for processing, often due to different manufacturers, different furnace batch, after the heat treatment of high and low magnetic performance, or even less than technology standard requirement. 1J46 magnetic performance requirements: