GB/T 40380.2-2021
Metallic powders—Determination of apparent density and flow rate at elevated temperatures—Part 2: Determination of flow rate at elevated temperatures (English Version)

Standard No.

GB/T 40380.2-2021

Language

Chinese, Available in English version

Release Date

2021

Published By

国家市场监督管理总局、中国国家标准化管理委员会

Latest

GB/T 40380.2-2021

Scope

This document specifies two flow rate determination methods for determining the time (flow rate) for a certain amount of heated powder mixture to pass through a funnel with a fixed aperture. This powder is mainly suitable for warm-pressed iron and steel powder. Method A uses a funnel with an aperture of 2.5 mm, and the sample volume is 50 g, mainly based on the method specified in ISO4490. This method is only applicable to powder mixtures that can freely flow through 2.5 mm pores under heated conditions. Method B uses a funnel with a pore size of 5 mm and a sample volume of 150 g. The test temperature range of these two methods is 60 ℃ ~ 180 ℃, and one of them can be selected after negotiation between relevant parties.

GB/T 40380.2-2021 Referenced Document

• ISO 4490:2008 Metallic powders — Determination of flow rate by means of a calibrated funnel (Hall flowmeter) (Fourth Edition)

GB/T 40380.2-2021 history

• 2021 GB/T 40380.2-2021 Metallic powders—Determination of apparent density and flow rate at elevated temperatures—Part 2: Determination of flow rate at elevated temperatures

GB/T 40380.2-2021 -All Parts