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文章较详细地介绍了硅钢薄带磁性能好坏、硅钢薄带表面化学涂层的类型、铁芯制造工艺以及铁芯去应力退火工艺等因素对铁芯电磁性能的影响。采用电磁性能相当于1D24牌号的硅钢薄带、卷绕成C-型铁芯经过850℃×4小时真空退火后其电磁性能可达到:B_(30)=18200～19200高斯,Hc=0.35～0.45安匝/公分,P_(15)/400=17～21瓦/公斤。基本达到美国80年代同类产品的性能水平,能够满足器件的设计要求。 文章还介绍了采用美制4274A型电桥仪较精确地测得不同频率(f)和不同电流(I)下的电感值L和质量品质因素(Q)的数值以此来反映铁芯的导磁率(μ)和损耗电阻(R)的水平,实际上是间接地反应铁芯的磁感应和铁损的高低。
The article introduces in detail the influence of the magnetic properties of the silicon steel strip, such as the magnetic properties of the silicon steel strip, the type of the chemical coating on the surface of the silicon steel strip, the manufacturing process of the iron core and the stress relief annealing process of the iron core. Electromagnetic performance is equivalent to 1D24 grade of silicon steel ribbon, winding into a C-core after 850 ℃ × 4 hours vacuum annealing its electromagnetic properties can be reached: B_ (30) = 18200 ~ 19200 Gauss, Hc = 0.35 ~ 0.45 Amps / cm, P_ (15) / 400 = 17 ~ 21 watts / kg. Basically reached the performance level of similar products in the United States in the 1980s, to meet the design requirements of the device. The article also introduced the use of US 4274A-type bridge instrument more accurately measured at different frequencies (f) and different values of the current value of the inductance (L) and quality factor (Q) in order to reflect the permeability of the core (μ) and loss resistance (R) level, in fact, indirectly reflects the core of the magnetic induction and the level of iron loss.