Method and system for detecting inclusions in float glass based on wavelength(s) analysis
AssigneeGuardian Glass, LLC
InventorsAlexey Krasnov, Xuequn Hu
Life of this patent
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Abstract
A method and/or system is provided for detecting inclusions (e.g., nickel sulfide based inclusions/defects) in soda-lime-silica based glass, such as float glass. In certain example instances, during and/or after the glass-making process, following the stage in the float process where the glass sheet is formed and floated on a molten material (e.g., tin bath) and cooled or allowed to cool such as via an annealing lehr, light is directed at the resulting glass and reflection of various wavelengths (e.g., red and blue wavelengths) is analyzed to detect inclusions.
Claims30
A method of detecting an inclusion in glass, the glass including a base glass composition comprising:
- Ingredient
- wt. %
- SiO2
- 67-75%
- Na2O
- 10-20%
- CaO
- 5-15%
- A12O3
- 0-7%
- K2O
- 0-7%
- the method comprising:
- directing light from at least one light source toward the glass;
- and
- determining whether an inclusion comprising nickel sulfide is present in the glass based at least on a difference between how first and second reflected wavelengths are diffracted and/or scattered.
A system for detecting an inclusion in glass, the glass including a base glass composition comprising:
- Ingredient
- wt. %
- SiO2
- 67-75%
- Na2O
- 10-20%
- CaO
- 5-15%
- A12O3
- 0-7%
- K2O
- 0-7%
- the system comprising:
- at least one light source for directing light toward the glass;
- and
- a processor configured to determine whether an inclusion comprising nickel sulfide is present in the glass based at least on a difference between how first and second reflected wavelengths are diffracted and/or scattered.
A method of detecting an inclusion in glass, the glass including a base glass composition comprising:
- Ingredient
- wt. %
- SiO2
- 67-75%
- Na2O
- 10-20%
- CaO
- 5-15%
- A12O3
- 0-7%
- K2O
- 0-7%
- the method comprising:
- directing light, comprising first and second wavelengths, from at least one light source toward the glass;
- and
- determining whether an inclusion is present in the glass based at least on a difference between how the first and second wavelengths are diffracted and/or scattered by the glass.
Dependencies are inferred from the claim text.