GB627348A - An improved method of annealing glass - Google Patents

An improved method of annealing glass

Info

Publication number
GB627348A
GB627348A GB1045847A GB1045847A GB627348A GB 627348 A GB627348 A GB 627348A GB 1045847 A GB1045847 A GB 1045847A GB 1045847 A GB1045847 A GB 1045847A GB 627348 A GB627348 A GB 627348A
Authority
GB
United Kingdom
Prior art keywords
glass
temperature
holding
coefficients
expansion
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
Application number
GB1045847A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
American Optical Corp
Original Assignee
American Optical Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by American Optical Corp filed Critical American Optical Corp
Priority to GB1045847A priority Critical patent/GB627348A/en
Publication of GB627348A publication Critical patent/GB627348A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B25/00—Annealing glass products
    • C03B25/02—Annealing glass products in a discontinuous way
    • C03B25/025—Glass sheets

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

627,348. Annealing glass. ABBEY, A. (American Optical Co.). April 18, 1947, No. 10458. Drawings to Specification. [Class 56] A method of annealing glass comprises heating the glass to an initial high temperature (below the melting point) slowly cooling to a temperature t and holding it at t for a predetermined time and finally cooling it; t is obtained graphically by plotting the coefficients of expansion of a test sample and is the optimum and highest temperature at which the atomic arrangement of the glass most rapidly tends towards compactness without tendency to decompact and is the lowest holding temperature for the particular glass. The holding time is that which is sufficient to permit the attainment of the desired degree of compactness. Graphic examples are given. A Chevenard dilatometer may be used for determining the coefficients of expansion.
GB1045847A 1947-04-18 1947-04-18 An improved method of annealing glass Expired GB627348A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1045847A GB627348A (en) 1947-04-18 1947-04-18 An improved method of annealing glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1045847A GB627348A (en) 1947-04-18 1947-04-18 An improved method of annealing glass

Publications (1)

Publication Number Publication Date
GB627348A true GB627348A (en) 1949-08-08

Family

ID=9968232

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1045847A Expired GB627348A (en) 1947-04-18 1947-04-18 An improved method of annealing glass

Country Status (1)

Country Link
GB (1) GB627348A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566893A (en) * 1984-10-03 1986-01-28 Rca Corporation Method for fabricating a glass CRT panel
CN113203767A (en) * 2020-12-22 2021-08-03 湖北新华光信息材料有限公司 Glass annealing temperature range testing method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4566893A (en) * 1984-10-03 1986-01-28 Rca Corporation Method for fabricating a glass CRT panel
CN113203767A (en) * 2020-12-22 2021-08-03 湖北新华光信息材料有限公司 Glass annealing temperature range testing method
CN113203767B (en) * 2020-12-22 2022-05-27 湖北新华光信息材料有限公司 Glass annealing temperature range testing method

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