GB/T 1480-2012 English PDF (GBT1480-2012)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GB/T 1480-2012
Historical versions: GB/T 1480-2012
Preview True-PDF (Reload/Scroll if blank)

GB/T 1480-2012: Metallic powders -- Determination of particle size by dry sieving
GB/T 1480-2012
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS 77.160
H 70
GB/T 1480-2012 / ISO 4497.1983
Replacing GB/T 1480-1995
Metallic powers –
Determination of particle size by dry sieving
(ISO 4497.1983, IDT)
ISSUED ON. DECEMBER 31, 2012
IMPLEMENTED ON. OCTOBER 1, 2013
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration Committee.
Table of Contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Principle... 4 
4 Apparatus ... 4 
5 Preparation of test portion ... 5 
6 Procedure ... 5 
7 Expression of results ... 6 
8 Test report ... 7 
Foreword
This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This Standard replaces GB/T 1480-1995 Determination of particle size for
metallic powders - Dry sieving.
Compared with GB/T 1480-1995, the main changes are as follow.
- added requirements for sieve calibration;
- added requirements for mechanical sieving machine;
- increased balance weighing accuracy from ± 0.1 g to ± 0.05 g;
- deleted Annex A;
- modified some clauses of GB/T 1480-1995.
This Standard is identical with ISO 4497.1983 Metallic powders – Determination
of particle size by dry sieving.
This Standard shall be under jurisdiction of China National non-ferrous metals
Standardization Technical Committee (SAC/TC 243).
Drafting organizations of this Standard. Jining Unbounded Technology Co., Ltd.,
Central Iron and Steel Research Institute.
Main drafters of this Standard. Jiang Yongshan, He Zhaoshu, Li Junfeng.
This Standard replaces the following previous standards.
- GB/T 1480-1995;
- GB/T 1480-1984.
Metallic powers –
Determination of particle size by dry sieving
1 Scope
This Standard specifies a method of determining the particle size distribution of
metallic powders by dry sieving into size fractions.
The method is applicable to dry, unlubricated metallic powders.
This Standard is not applicable to powders in which the morphology differs
markedly from being equiaxial, for flake-type powders. This Standard is also not
applicable to metallic powders having a particle size wholly for mostly under
45µm.
2 Normative references
The following referenced documents are indispensable for the application of
this document. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any
amendments) applies.
ISO 565 Test sieves - woven metal wire cloth, perforated and electroformed
sheet – Nominal sizes of openings
ISO 2591 Test sieving
3 Principle
Separation of the metallic powder into particle size fractions by shaking through
a set of wire cloth test sieves arranged in consecutive order of size of aperture
openings. Weighing of the fractions retained on each sieve and the fraction
passing the finest sieve.
4 Apparatus
4.1 Calibrated series of non-magnetic wire cloth sieves
4.1.1 The set has different nominal aperture sizes. Each sieve cloth shall be
mounted in a non-magnetic metal frame having a nominal diameter of 200 mm