T/CSRE 6004-2024 Sintered NdFeB Permanent Magnet Alloy Powder Flowability Test Method Part 4: Determination of Scraping Angle

Scope

Main Technical Content: Flowability Test Method for Sintered Neodymium-Iron-Boron Permanent Magnet Alloy Powder - Part 4: Determination of the Angle of the Spatula 1 Scope This document describes the method for determining the angle of the spatula for sintered neodymium-iron-boron permanent magnet alloy powder. This document is applicable to the determination of the angle of the spatula for sintered neodymium-iron-boron permanent magnet alloy powder, with a particle size range of (1.5~50.0) μm. 2 Normative Reference Documents The content of the following documents is an integral part of this document through normative reference. Among them, the referenced documents with a specified date apply only to the version corresponding to that date; the unspecified date referenced documents apply to the latest version (including all amendment sheets) of this document. GB/T 31057.3 - Part 3: Determination of the Flowability Index 3 Terms and Definitions The following terms and definitions are applicable to this document. Angle of the Spatula The average value of the angle between the free surface (slope) of the powder on the spatula plate and the angle after vibration is called the angle of the spatula, also known as the angle of the spatula and the angle of the plate. [Source: GB/T 31057.3-2008, 3.2] 4 Method Outline Under the protection of inert gas, the sintered neodymium-iron-boron permanent magnet alloy powder is allowed to naturally fall onto a dedicated plate by a specific vibration method. When all the powder is embedded in the plate, the receiving tray below the falling plate is removed. The angle between the free surface (slope) of the powder on the plate and the angle after vibration is the angle of the powder. 5 Technical Requirements Scraper Angle Determination Device The schematic diagram of the sintered neodymium-iron-boron permanent magnet alloy powder scraper angle determination device and its main components is shown in Figure 1. Any

Development Information

Related Standards