Manufacture of intrasurface nonoriented electrical iron sheet
    93.
    发明专利
    Manufacture of intrasurface nonoriented electrical iron sheet 失效
    表面不锈钢电路板的制造

    公开(公告)号:JPS6144130A

    公开(公告)日:1986-03-03

    申请号:JP16541484

    申请日:1984-08-07

    CPC classification number: C21D8/1255 C21D8/1211

    Abstract: PURPOSE:To manufacture efficiently and stably an intrasurface nonoriented electrical iron sheet having superior soft-magnetic characteristics by forming a molten high-silicon iron alloy having a specified composition into a sheet by a very rapid cooling method and by subjecting the sheet to decarburization annealing at a proper temp. in an atmosphere of gaseous hydrogen or an inert gas. CONSTITUTION:The molten high-silicon iron alloy contg. 2.0-8.0wt% Si and 0.016-1.000wt% C is formed into a sheet by a very rapid cooling method, and the sheet is subjected to decarburization annealing at 600-1,300 deg.C in the atmosphere of gaseous hydrogen, the inert gas such as N2 or Ar, or a mixture thereof. The dew point of the annealing atmosphere is preferably kept at -30--70 deg.C, and the proper annealing time is about 5min-12hr. Thus, the intrasurface nonoriented electrical iron sheet having superior soft-magnetic characteristics is stably obtd. independently of the thickness and the rate of annealing.

    Abstract translation: 目的:通过非常快速的冷却方法将具有特定组成的熔融高硅铁合金制成片材,并通过将片材进行脱碳退火,从而有效和稳定地制造具有优异软磁特性的表面内无取向电工铁板 适当的温度 在气态氢气或惰性气体气氛中。 构成:熔融高硅铁合金 2.0-8.0重量%的Si和0.016-1.000重量%的C通过非常快速的冷却方法形成片材,并且在气态氢气氛中在600-1300℃下对片材进行脱碳退火,惰性气体 例如N 2或Ar,或其混合物。 退火气氛的露点优选保持在-30〜70℃,适当的退火时间为约5分钟〜12小时。 因此,稳定地具有优异的软磁特性的表面内无取向的电磁铁片。 独立于厚度和退火速率。

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