我厂生产SBT-5示波器,示波管的屏蔽罩一直是采用0.4 mm的4-79钼坡莫合金带料制成的,屏蔽罩如下图: 小端中端大端 4-79料电磁性能很高,但价格高达每公斤约80元,每只屏蔽罩仅材料费高达40元。在实际生产中,只需简单的热处理,就能满足示波管的磁屏蔽要求,材料性能没有得到充分的发挥与应用。因此,能否找到一种价格便宜的软磁材料制作屏蔽罩,经过适当热处理,达到实际使用性能相当于坡莫合金制成的屏蔽性能呢? I plant production SBT-5 oscilloscope, oscilloscope shield has been used 0.4mm 4-79 molybdenum permalloy strip material, the shield as shown below: Small-end mid-end 4-79 material electromagnetic properties High, but the price of up to about 80 yuan per kilogram, only one shield material costs up to 40 yuan. In actual production, only a simple heat treatment, can meet the requirements of the magnetic shielding of the oscilloscope, the material properties have not been fully demonstrated and applied. Therefore, we can find a cheap soft magnetic shield material, after proper heat treatment, to achieve the actual performance equivalent to permalloy made of shielding performance?