Standard No.:	GB/T 7962.19-2010
English Name:	Test methods of colourless optical glass—Part 19:abration factor
Chinese Name:	无色光学玻璃测试方法　第19部分：磨耗度
Chinese Classification:	N05    Material and component for instrument and meter
Professional Classification:	GB    National Standard
ICS Classification:	81.040.01 81.040.01    Glass in general 81.040.01
Issued by:	AQSIQ
Issued on:	2011-1-14
Implemented on:	2011-5-1
Status:	valid
Superseding:	GB/T 7962.19-1987 Colourless optical glass test methods; Relative lapping hardness
Language:	English
File Format:	PDF
Word Count:	4000 words
Price(USD):	110.0
Delivery:	via email in 1 business day

1 Scope This part of GB/T 7962 specifies the test method for the abration factor of colourless optical glass. This part is applicable to the test on abration factor of colourless optical glass. 2 Normative references The following documents contain provisions which, through reference in this part of GB/T 7962, constitute provisions of this part. For dated references, subsequent amendments to (excluding correction to), or revisions of, any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions apply to this part. GB/T 903 Colourless optical glass GB/T 7962.20 Test methods of colourless optical glass - Part 20: Density 3 Terms and definitions abration factor value obtained by multiplying the ratio of the abration loss (volume) of the specimen to that of the standard glass (K9) by 100 under the conditions that the glass specimen under test and the standard glass are pressed against a rotating disk respectively and ground while adding abrasive

Foreword i 1 Scope 2 Normative references 3 Terms and definitions 4 Test apparatus 5 Glass specimen under test and standard glass 6 Measurement 7 Data processing