BYR76合金制作叠铆式气隙铁芯的工艺研究

Study on Gas Core Processing Type with BYR of Riveting Laminated 76 Alloy

FeNi76M03Cu4合金（BYR76合金）是一种软磁合金，具有优异的磁性能和价格低廉，适合于制作小型电流霍尔传感器专用气隙铁芯。与1J85合金相比，BYR76软磁合金具有较高的饱和磁感（Bs值可以达到8300Gs）且节省成本（原材料成本降低约10％）。通过对铁芯产品和合金材料的分析，提出对铁芯生产工艺的改进措施，包括对铁芯合金材料进行了成分确定，以及后续的成型、热处理等工艺改进试验，制订了用BYR76合金代替1J85合金加工Hall-10铁芯的制作工艺。结果显示，用BYR76合金制作的叠铆式气隙铁芯的电流量程可以从50A增加至IOOA，满足了铁芯应用在一些霍尔电流传感器的特殊设计要求。

FeNi76Mo3Cu4 alloy （in the present named BYR76 alloy） is one kind of soft magnetic alloy with excellent magnetic properties and low price and the strip of this alloy is suitable for manufacturing gas core for small type of current Hall sensor. Compared with conventional 1J85 alloy, one advantage of BYR76 alloy is with high saturation magnetic in- duction of 8300Gs and the other is with low production cost of raw materials about 10~. Based on the requirement for the iron core and materials, some improvements have been pro- posed inclosing determining the alloy composition, and readjusting gas core processing. The results show that the measurement scope of the current for gas core is increased from 50A to 100A and the magnetic properties of the BYR 76 alloy meet the demand of producing gas core for Hall current sensor.