This standard specifies the simplified classification of surfactants arranged by group. GB 5328-1985 Simplified Classification of Surfactants GB5328-1985 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Test sieves and test slering
Test sieves and test sleringVoc abulary
The terms specified in this standard are special terms applicable to test sieves and sieving tests. This standard is equivalent to ISO2395-1972 "Test sieves and sieving tests terminology". Material to be sieved
Materiali to be sievedbzxz.net
1.1 Particle
particle
Discrete monomer of material (regardless of size). 1.2 Agglomerate
A number of particles sticking together.
1.3 Sample
sample
A representative part taken from a certain amount of material. 1.4 Test sample
test sample
Sample for test
1.5 Charge
charge
The sample or part of the sample placed on a single test sieve or a test sieve set. 1.6 Apparent bulk density
The ratio of the mass of the charge to the volume when it is placed on the sieve surface. 2 Test sieves
test sieves
2.1 Sieving medium
Sieving medium
A surface with regularly arranged holes of the same shape and size. 2.2 Sieve
A device for screening by mounting the sieve surface in a sieve frame. 2.3 test sieve
test sieve
Fan Bureau of Standards 1985-08-81 UDC 621.928.2
:620.1.05
GB 5329-85
1988-04-01 implementation
GB 5329--85
A sieve that meets the standard specification of a test sieve and is used for particle size analysis of the material to be sieved. 2.4 certified test sieve
certified test sieve
A test sieve that has been inspected and certified by a designated specialized agency and is considered to meet an agreed specification. 2.5 matched test sieve
matched test sieve
A test sieve that can reproduce the test results of a calibration test sieve for a given material within a specified range. 2.6 full set of test sieves full set of test sieves of a given type of sieve surface included in a standard specification. 2.7 regular set of test sieves a number of sieves selected from a full set of test sieves according to the normal pattern for particle size analysis. 2.8 irregular set of test sieves a number of sieves selected from a full set of test sieves not according to the normal pattern for particle size analysis. 2.9 nest of test sieves a regular or irregular set of test sieves assembled with a cover and a receiving tray. 2.10 sieve frame a rigid frame that fixes the sieve surface and limits the scattering of the material to be sieved. 2.11 Lid (cover)
A lid that fits snugly on the sieve to prevent the material to be screened from escaping. 2.12 Receiver (pan)
A receiver (pan)
A receiver that fits snugly under the sieve to receive the material that has passed through all the sieves. 2.18 Aperture size
The size of the openings on the sieve surface.
2.14 Percentage sieving area
The ratio of the total opening area of ​​the sieve surface to the total area of ​​the sieve surface, expressed as a percentage. 2.15 Woven wire cloth
Woven wire cloth
A sieve surface with mesh woven from metal wires. 2.16 Wire diameter
Wire diameter
The diameter of the metal wires on the woven net.
2.17 Warp
All longitudinal metal wires on the net during weaving. 2.18 Weft
weft (shoot)
All transverse metal wires on the net during weaving. 2.19 Weaving type
type of weave
The way in which the warp and weft are interwoven.
2.20 Plain weave
plain weave
GB 5329—85
The warp and weft are interwoven in a one-up-one-down weaving method (Figure 1) Figure 1 Plain weave
2.21 Twill weave
twilled weave
The warp and weft are interwoven in a two-up-two-down weaving method (Figure 2). 2.22 Perforated plate
porforated plate
The screen surface of a plate with symmetrically arranged holes. 2.23 Pitch (centres)
The distance between the same positions of two adjacent holes on a perforated plate. 2.24 Bridgewidth
Bridgewidth(bar)
GB 5829—85
Figure 2 Twill weave
The closest distance between the edges of two adjacent holes on a perforated plate. 2.25 Margin
The distance between the edge of a perforated plate and the outer edge of its outermost row of holes. 2.26 Plate thickness
Plate thickness
The thickness of the perforated plate after perforation.
2.27 Punch side
The side where the punch enters the perforated plate.
3 Sieving test
test sieving
3.1 Sieving
sieving
The process of separating different particles according to their size using one or more sieves. 3.2 Sieving test
test sieving
Sieving using one or more test sieves. 8.3 Dry sieving
dry sieving
Sieving without adding liquid.
8.4 Wet sieving
wet sieving
Sieving with adding liquid.
8.5 Sieving rate
sieving rate
GB 5829—85
The amount of material passing through the sieve in a given time, expressed in mass units or as a percentage of the charge. 3.6 undersize (fines)
undersize (fines)
the portion of the charge that passes through the specified sieve openings. $.7 oversize (residue)
the portion of the charge that does not pass through the specified sieve openings. $.8 end point*
end point
the point at which the sieving process reaches a point at which the amount passed by further sieving is insufficient to significantly change the sieving result. 3.9 near-size particle
near-size particle
a particle approximately equal to the size of the sieve opening.
8.10 blinding
the particles of the material to be sieved block the sieve openings.
8.11 fraction (size fraction)
the portion of the charge that remains on the test sieve or receiving pan. Expression of results
4.1 Particle size (sieve size of a particle) Particle size (sieve size of a particle) The smallest sieve size that a particle can pass through in the most favorable posture. 4.2 Size analysis by sieving
The sample is divided into different particle size grades by sieving and the results are reported. 4.Particle size distribution curve
size distribution curve
A graph showing the results of particle size analysis.
4.4 Cumulative oversize distribution curve
cumulative oversize distribution curve*The end point of each material shall be specified in the relevant standards according to the screening rate, liquid transparency in wet screening or other measurable indicators. 81
GB $829--$5
A curve showing the relationship between the cumulative percentage of the mass of the oversize of each sieve and its corresponding sieve hole size in a set of test sieves with decreasing sieve hole sizes. 4.5 Cumulative undersize distribution curve
cumulative undersize distribution curve A curve showing the relationship between the cumulative percentage of the mass of the undersize of each sieve and its corresponding hole size in a set of test sieves with decreasing sieve hole sizes.
Additional remarks:
This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China and is under the jurisdiction of the Standardization Research Institute of the Ministry of Machinery Industry. This standard was drafted by Xi'an Cable Factory, Changde Instrument Factory and other units. The main drafters of this standard are Zhang Shuheng and Ding Tiegen.
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