GB/T 40380.2-2021 Active National standards

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

Publish Date: 2021-08-20 Implement Date: 2022-03-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 40380.2-2021

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: \nTest methods for the physical properties of metals

ICS Name: Powder metallurgy

Publish Date: 2021-08-20

Implement Date: 2022-03-01

Pages: 8 pages

Scope

This document specifies two methods for measuring flow rate, used to determine the time (flow rate) required for a certain amount of heated powder mixture to pass through a funnel with a fixed aperture. This kind of powder is mainly suitable for hot-pressing steel powders.
Method A uses a funnel with an aperture of 2.5 mm and a sample quantity of 50 g, mainly based on the method specified in ISO 4490. This method is only suitable for powder mixtures that can flow freely through a 2.5 mm aperture under heating conditions.
Method B uses a funnel with an aperture of 5 mm and a sample quantity of 150 g.
The experimental temperature range for both methods is 60 °C to 180 °C. After consultation with relevant parties, one of the two methods can be selected.