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Iron powder for iron powder cores and method for selecting iron powder for iron powder cores
Iron powder for iron powder cores and method for selecting iron powder for iron powder cores
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机译:铁粉芯用铁粉及铁粉芯用铁粉的选择方法
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摘要
Provided is an iron powder for iron powder cores, and a method for selecting the same. The following powder is an iron powder in which orientations are measured in a cross section of a compact formed with a molding pressure of 0.98 GN/m2 by electron backscatter diffraction (EBSD) and the average of KAMs calculated using EBSD analysis software is to 3.00° or less. The Iron powder has a particle size distribution in which particles with a size of 45 μm or less are adjusted to 10% by mass or less, in which the average hardness of powder particles is 80 HV 0.025 or less in Vickers hardness, in which the product of the number (inclusions/m2) of inclusions per unit area and the median size D50 (m) of the inclusions is 10,000 (inclusions/m) or less, and which has an apparent density of 4.0 Mg/m3 or more.
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机译:提供了一种用于铁粉芯的铁粉及其选择方法。下列粉末为铁粉,其中通过电子背散射衍射(EBSD)在成型压力为0.98 GN / m2的成形坯的横截面中测量取向,并且使用EBSD分析软件计算的KAM平均值为3.00°或更少。铁粉的粒径分布是将45μm以下的粒径调整为10质量%以下,维氏硬度为80HV±0.025以下。每单位面积夹杂物的数量(夹杂物/ m2)与夹杂物的中值尺寸D50(m)的乘积为10,000(夹杂物/ m)以下,表观密度为4.0Mg / m3以上。
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