1 Scope
This part of GB/T 7962 specifies the inspection methods, test steps and data processing for the bubble of colourless optical glass.
This part is applicable to the inspection on the bubble 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 Colorless optical glass
3 Terms and definitions
For the purposes of this part, the following term and definition apply.
3.1
extent of bubble
extent of inclusions such as bubbles and stones contained in every 100cm3 glass, including its diameter and the total sectional area of all inclusions such as bubbles and stones
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Sample
7 Test steps
8 Data processing
