由于粉末占工业中使用的约50％的材料，粉末是一个重要的物理测试领域。欧洲杯足球竞彩处理和加工颗粒，颗粒和粉末是产品加工的关键。然而，由于它们随机和不规则行为，这些过程通常存在问题，特别是关于流动性。
一种s several raw materials and semi-finished products are in powder form, this sector will surely gain considerable commercial and manufacturing advantages from enhancements in the evaluation of powder flow.
达到消费者的许多终端产品也需要考虑流动性。例如，在从罐子中倾吐像人造甜粉的产品，块状和蛋糕将使产物成为低质量的印象。
粉末流分析仪（PFA）是评估粉末流动的最合适的方式。通过专利的螺旋叶片设计，稳定的微系统取代了传统的手动浇注技术，该设计调节粉末样品的流动。
样品运动是由转子或叶片引起的，转子或刀片基于用户固定的设置通过粉末塔 - 垂直旋转和移动。该过程条件条件粉末并去除操作员之间的任何装载变化。它为源和/或批次之间的差异提供了基本质量控制测试。压实的样品将持续流动和运动。
指数软件与纹理分析仪和粉末流分析仪的成本集成，并执行数据的实时显示。测试是快速且容易地配置的，并设置数据分析以简单或高级方式自动收集来自每个测试的关键参数。
一种wide array of methods can be used to perform many different tests on the Powder Flow Analyzer:
- 结块：这是粉末在运输和储存过程中开发大附聚物的倾向。形成蛋糕的粉末倾向与其粘合性密切相关。蛋糕的力量将依靠若干因素，例如颗粒 - 粒子相互作用，包装效率和湿度。
The caking test smoothly compacts the powder column to a force preset by the user, and then slices back to the top of the column with the least disturbance, before re-compacting. This is repeated for the set number of cycles, and then, the compacted cake is sliced by the rotor blade.
- Cohesion:Cohesiveness is the propensity of the particles of powder to stick together and agglomerate (develop larger clusters of particles). The PFA quantifies this cohesion feature by operating the blade such that the powder is lifted. A more cohesive powder will stick to itself and to the blade, thereby decreasing the force applied on the base of the vessel.
- 粉末流速依赖性：粉末的流动性能随着减小或增加的流速而变化。例如，粉末可能转动高度耐流量，因为它被推动得更快。或者，随着流速增强，它可能变得更加自由流动。由于流程变化以匹配增加的输出需求，此问题可能导致或过度填充。
评估的PFA量化这个属性force needed to move the blade through the powder at accelerating speeds. An assessment of the flow stability of the powder is performed by comparing the force required to move the blade through the powder at the beginning of the test compared to the work needed to shift the powder at the same speed at the end of the test.
- 桥接：When the flow imposed by the PFA is regulated, powders that flow easily will display minimal resistance transferred through the powder column in an upward or downward direction. By contrast, powders that flow poorly will display a considerable amount of force in both directions.
当刀片在压缩（向下）和升降（向上）方向上通过粉末柱时，粉末抵抗推进刀片。在刀片上自由流动的粉末将在刀片上方轻松级联，从而产生清晰的图形。如果粉末短暂拱门，桥梁或开发内聚键，则刀片的进一步推进将破坏这些键。在颗粒状产物中，颗粒可以丛生并导致类似的问题。欧洲杯猜球平台
In general, force increases as the bonds are formed and stressed, immediately followed by a decrease in force as the bonds break. The degree of resistance and failure can be quantified simply by measuring the length of a plotted line (which compares well with the jaggedness of a line). The measurement of bridging is automatically performed during the post-test analysis.
- 散装密度：用铰链分成两个血管可用于去除多余的粉末（调节后）并留下特定体积。PFA测量重量的能力使得能够自动计算散装密度。在固体物体的情况下，密度是体积和质量之间的比率。然而，粉末的结构是高度变化的;因此，它们的密度可以通过对其包装的改变来自由修改。
PFA上的调理循环通过在每个测试之前以可重复和系统的方式处理每个粉末样品来促进可重复的密度测量。在调理过程中，通过将刀片通过样品引导至切片/通道（升力）来消除填充方法中的填充应力和差异。这会产生均匀的样本，支持结果的比较和可重复性。
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粉末流分析 - 如何测量粉末流量