GB/T 20167-2012Physical test method of rare earth polishing powder - Determination of burnishing mass and scratch - Gravimetry (English PDF)
稀土抛光粉物理性能测试方法 抛蚀量和划痕的测定 重量法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 5, 2012
Implementation date
May 1, 2013
Scope
GB/T 20167-2012 is the English-translated version of 稀土抛光粉物理性能测试方法 抛蚀量和划痕的测定 重量法.
GB/T 20167-2012 is the Chinese standard "Physical test method of rare earth polishing powder - Determination of burnishing mass and scratch - Gravimetry". Its scope clause reads: This standard specifies the method for the determination of rare earth polishing powder polishing amount of erosion and scratches with a double-sided grinding machine.
This standard applies to the determination of cerium-based rare earth-based rare-earth polishing powder polishing amount of erosion and scratches rate measurement range are. throwing eclipse amount 0.05mg/(cm2 · min) ~ 0.25mg/(cm2 · min), scratched by 0% to 100%.
Its clauses include principle of the method; terms and definitions; main material and reagents; device.
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Document preview — GB/T 20167-2012
National Standard of the People's Republic of China
- ICS
- 77.120.99
- Classification
- H 65
- Replacing
- GB/T 20167-2006
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 principle of the method
- 3 Terms and Definitions
- 4 main material and reagents
- 5 device
1 Scope
This standard specifies the method for the determination of rare earth polishing powder polishing amount of erosion and scratches with a double-sided grinding machine.
This standard applies to the determination of cerium-based rare earth-based rare-earth polishing powder polishing amount of erosion and scratches rate measurement range are. throwing eclipse amount
0.05mg/(cm2 · min) ~ 0.25mg/(cm2 · min), scratched by 0% to 100%.
2 principle of the method
Open the sample mill after water were mixed by mud pump the sample through the pulp mill circulating weighed before grinding, after glass
Weight throw eclipse calculated amount. In the high-energy halogen observed number of pieces of glass to scratch, scratch rate was calculated.
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Throw erosion amount burnishingmass
Under specified test conditions, achieve the required effect under the premise of the tested samples of rare earth polishing powder SF-5 glass unit time,
Throw cut per unit area, in units of milligrams per square centimeter per minute [mg/(cm2 · min)].
3.2 Scratches rate scratchrate
Length was observed under high-energy halogen lamps, if they are grinding scratches SF-5 glass on the positive and negative are reflective and scratch greater than or equal glass
Radius of the piece is that the glass scratches, a few scratches glass is ground to the total number of the ratio of said glass scratch rate.
4 main material and reagents
4.1 polyurethane polishing pad
thickness 2mm ~ 3mm.
4.2 glass
SF-5 type, thickness of 0.50cm, diameter 4.00cm, no pitting, open pores, point out the broken edges, smooth surface shape.
4.3
deionized water.
5 device
5.1 mill
double-sided grinding machine, adjustable speed, automatic mixing beating slurry automatic cycle.
5.2
Analytical balance, precision 0.0001g.
5.3 glass surface detection equipment
high-energy halogen lamps.
5.4
ultrasonic cleaning machine.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Similar standards
Editions of GB/T 20167
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 20167-2012 | Physical test method of rare earth polishing powder - Determination of burnishing mass and scratch - Gravimetry | current edition | Current |
| GB/T 20167-2006 | Physical test method of rare earth polishing powder - Determination of burnishing mass and scratch - Gravimetry | previous edition | Superseded |
This page sells the current edition, GB/T 20167-2012. Earlier editions are listed for reference only.
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