GB454374A - Improvements in and relating to the toughening or hardening of glass or glass objects - Google Patents
Improvements in and relating to the toughening or hardening of glass or glass objectsInfo
- Publication number
- GB454374A GB454374A GB939935A GB939935A GB454374A GB 454374 A GB454374 A GB 454374A GB 939935 A GB939935 A GB 939935A GB 939935 A GB939935 A GB 939935A GB 454374 A GB454374 A GB 454374A
- Authority
- GB
- United Kingdom
- Prior art keywords
- glass
- minutes
- hardening
- softening temperature
- toughening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/0413—Stresses, e.g. patterns, values or formulae for flat or bent glass sheets
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mathematical Physics (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Surface Treatment Of Glass (AREA)
Abstract
454,374. Hardening glass. HEIDE, H. C., 2, Broad Street Buildings, Liverpool Street, London.-(Eokert, F. ; 1, Goethestrasse, Charlottenburg, Berlin) March 26, 1935, No. 9399. [Class 56] In order to create permanent stresses while avoiding the development of temporary stresses, the glass after heating is rapidly chilled from near its softening temperature to its lower annealing temperature, and then cooled slowly. If desired, the glass may be briefly heated between the two stages. The rapid chilling may be effected by compressed air carrying atomized water, oil or steam. In one example, a glass plate 6 mm. thick with a softening temperature of 650‹ C. is heated for 5-6 minutes to about 620‹ C. and is then quickly chilled for 10-15 seconds to 400‹ C. Cooling to 100‹ C. taking 20 minutes or to 30‹ C. in 100 minutes follows.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB939935A GB454374A (en) | 1935-03-26 | 1935-03-26 | Improvements in and relating to the toughening or hardening of glass or glass objects |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB939935A GB454374A (en) | 1935-03-26 | 1935-03-26 | Improvements in and relating to the toughening or hardening of glass or glass objects |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB454374A true GB454374A (en) | 1936-09-28 |
Family
ID=9871218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB939935A Expired GB454374A (en) | 1935-03-26 | 1935-03-26 | Improvements in and relating to the toughening or hardening of glass or glass objects |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB454374A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114436517A (en) * | 2022-03-19 | 2022-05-06 | 东莞市柏维光学科技有限公司 | Processing technology of glass panel |
-
1935
- 1935-03-26 GB GB939935A patent/GB454374A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114436517A (en) * | 2022-03-19 | 2022-05-06 | 东莞市柏维光学科技有限公司 | Processing technology of glass panel |
| CN114436517B (en) * | 2022-03-19 | 2024-03-26 | 东莞市柏维光学科技有限公司 | Processing technology of glass panel |
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