ISO 18549-2:2009 金属粉末 高温下表观密度和流速的测定 第2部分：高温下流速的测定

标准编号：ISO 18549-2:2009

中文名称：金属粉末 高温下表观密度和流速的测定 第2部分：高温下流速的测定

英文名称：Metallic powders — Determination of apparent density and flow rate at elevated temperatures — Part 2: Determination of flow rate at elevated temperatures

发布日期：2009-04

标准范围

ISO 18549-2:2009描述了两种方法，用于确定给定数量的加热粉末混合物（基于铁粉或钢粉）通过具有给定孔直径的漏斗所需的时间（流速）。方法A使用孔口为2.5mm的漏斗，试验部分为50g，在很大程度上基于ISO 4490:2008标准化的方法。该方法仅适用于在加热条件下通过2.5 mm孔自由流动的粉末混合物。方法B使用孔口为5 mm的漏斗和尺寸为150 g的试样。两种方法的测试温度范围均为60°C至180°C，可在相关各方达成一致后选择其中一种。

ISO 18549-2:2009 describes two methods for the determination of the time (flow rate) it takes for a given quantity of a heated powder mix, based on iron or steel powders and to be used for warm compaction, to pass through a funnel with a given orifice diameter.Method A uses a funnel with an orifice of 2,5 mm and a test portion of 50 g and is, to a large extent, based on the method standardized in ISO 4490:2008. The method can only be used for powder mixes that flow freely through the 2,5 mm orifice in the heated condition.Method B uses a funnel with an orifice of 5 mm and a test portion with a size of 150 g.Both methods cover a testing temperature range of 60 °C to 180 °C and either of them can be selected after agreement between the parties involved.

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