SU631464A1 - Method of strengthening sheet glass - Google Patents

Method of strengthening sheet glass

Info

Publication number
SU631464A1
SU631464A1 SU772483144A SU2483144A SU631464A1 SU 631464 A1 SU631464 A1 SU 631464A1 SU 772483144 A SU772483144 A SU 772483144A SU 2483144 A SU2483144 A SU 2483144A SU 631464 A1 SU631464 A1 SU 631464A1
Authority
SU
USSR - Soviet Union
Prior art keywords
glass
film
heated
resistance
sheet
Prior art date
Application number
SU772483144A
Other languages
Russian (ru)
Inventor
Игорь Александрович Богулсавский
Ольга Николаевна Хализева
Лев Ефимович Садовников
Валерий Михайлович Брауде
Original Assignee
Предприятие П/Я А-7727
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 Предприятие П/Я А-7727 filed Critical Предприятие П/Я А-7727
Priority to SU772483144A priority Critical patent/SU631464A1/en
Application granted granted Critical
Publication of SU631464A1 publication Critical patent/SU631464A1/en

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Landscapes

  • Laminated Bodies (AREA)
  • Surface Treatment Of Glass (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Claims (2)

(54) СПОСОБ УПГОЧНЕНИЯ ЛИСТОВОГО СТЕКЛА свойств пленки и режимов нагрева Лластины. С увеличением толщины пленки {и, следователь но, с. уменьшением ее сопротивлени ) теплоотражающа  способность поверхиости с нанесенным покрытием возрастает, что вызьгаает большее искривление лнста прн нагреве. В св зи с этим дл  стекол с ниэкоомнымн пленками (сопротивлением менее 20 ом/кв) требуетс  больша  степень асимметрии охлаждени  дл  выравнивани  листа, чем при закалке стекол с вы сокоомными пленками. В частности, при закалке . электрообогревных стекол с сопротивлением 30-50 ом/кв степень асимметрии составл ет ие менее 100-150%. Наоборот, с уменьшением толщины пленочного покрыти  его теплоотражающа  способность снижаетс , поэтому и степень асимметрии при двухстороннем последующем охлаждении также должна быть меньше . Сущность изобретени  по сн етс  примерами . Пример. Нарезанные и этфацетированные стекла с предварительно на}1есенным на одну сторону электропровод щим покрытием сопротивлением 20-30 ом/кв нагревают в печи при температуре 6вО°С с выдержкой 40-2 сек/м толщины стекла. Нагретое стекло перемещают в закалочную решетку, где оно об1 уваетс  воздухом с различной интенсивностью: со стороны пленки давле;ше воздуха -150+10 мм в. ст. (коэффициент теплоотдачи 45 ёк.град тивоположной стороны -300+10 мм з.ст. (коэффициент теплоотдачи 70 ш.сМльад.) Охлаждение стекла проводитс  в течение 3-4 мии. Получаема  степень закалки 1,5+0,1 пор/см. Пример (54) METHOD OF PREVENTION OF SHEET GLASS film properties and heating modes of the Plate. With an increase in the film thickness {and, consequently, p. by decreasing its resistance, the heat reflecting ability of the coated surface increases, which causes a greater curvature of the heating surface. For this reason, for glasses with a low-resistance film (less than 20 ohms / sq.), A greater degree of cooling asymmetry is required to level the sheet than when hardening high-resistance films. In particular, during hardening. for electrically heated glasses with a resistance of 30-50 ohms / sq. the degree of asymmetry is less than 100-150%. On the contrary, with a decrease in the thickness of the film coating, its heat reflecting ability decreases, therefore, the degree of asymmetry in two-sided subsequent cooling should also be less. The invention is illustrated by examples. Example. Sliced and etched glasses with an electrically conductive coating with a resistance of 20–30 ohm / sq on a side pre-heated on one side are heated in an oven at a temperature of 6 ° C ° with an exposure time of 40–2 s / m glass thickness. The heated glass is transferred to the quenching lattice, where it is surrounded by air with different intensities: from the side of the film, the pressure below the air is -150 + 10 mm. Art. (heat transfer coefficient 45 Jek.t. of the opposite side -300 + 10 mm h. (heat transfer coefficient 70 Ws. Mlad.) Glass cooling is carried out for 3-4 missions. The obtained quenching degree is 1.5 + 0.1 porosity / cm Example 2. Нарезанные и отфацетарованные заготовки стекла с предварительно нанесенным на одну сторону электропровод щим покрытием сопротивлением 40-50 ом/кв, напевают в печи при температуре 670° С с выдержкой 34+2 сек/мм толщины стекла. Нагрттое стекло перемеп1ают в закалочную рещетку, где оно охлаждаетс  воздухом с различной интенсивностью , со стороны давление -200+30 мм.в.ст. (коэффициент теплоотдачи .---) с про тивоположной стороны -300±5б мм в.ст. ( т) Степеш эффициент теплоотдачи 70 см. се к.градзакалки 1,6+ 0,1 пор/см. Способ внедрен в серийное производство электрообогревных стекол, изделий конструкционной оптики на предпри ти х. Экономический эффект от внедрени  данного изобретени  на заводе Мосавтостекло составил 150 тыс. рублей. Формула изобретени  Способ упрочнени  листового стекла путем нагрева его и последующего асимметричного охлаждени  с двух сторон, отличающийс  тем, что, с целью повьпиени  качества стекла, перед нагревом.на рдну поверхность листа нанос т токопровод щую пленку, после чего нагревают до температуры на 30130°С выше температуры стекловани , а последующее охлаждение поверхности с пленкой ведут с интенсивностью обдува на 50-200% ниже противоположной поверхности листа. Источники информации, прин тые во внимание при-экспертизе: 1. Авторское свидетельство СССР № 224020, С 03 В 27/00, 1967.2. Cut and otfetsetarovanny glass blanks with an electrically conductive coating of 40–50 ohms / kV previously deposited on one side, are sung in a furnace at a temperature of 670 ° C with a holding time of 34 + 2 sec / mm of glass thickness. The heated glass is interchanged into a quenching lattice, where it is cooled with air with different intensities, on the side of the pressure is -200 + 30 mm.st. (heat transfer coefficient .---) from the opposite side -300 ± 5b mm in. Art. (t) Stepsh heat transfer efficiency 70 cm. sec. graded repetition 1.6 + 0.1 pores / cm. The method has been introduced into the mass production of electrically heated glass, products of structural optics on enterprises. The economic effect from the implementation of this invention at the Mosavtosteklo plant was 150 thousand rubles. The invention is a method of hardening sheet glass by heating it and subsequent asymmetric cooling on both sides, characterized in that, in order to improve the quality of glass, before heating, a conductive film is applied to the bottom surface of the sheet and then heated to a temperature of 30130 ° C above the glass transition temperature, and the subsequent cooling of the surface with the film is carried out with a blowing intensity 50–200% lower than the opposite surface of the sheet. Sources of information taken into account in the examination: 1. USSR Copyright Certificate No. 224020, C 03 B 27/00, 1967.
SU772483144A 1977-05-11 1977-05-11 Method of strengthening sheet glass SU631464A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU772483144A SU631464A1 (en) 1977-05-11 1977-05-11 Method of strengthening sheet glass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU772483144A SU631464A1 (en) 1977-05-11 1977-05-11 Method of strengthening sheet glass

Publications (1)

Publication Number Publication Date
SU631464A1 true SU631464A1 (en) 1978-11-05

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU772483144A SU631464A1 (en) 1977-05-11 1977-05-11 Method of strengthening sheet glass

Country Status (1)

Country Link
SU (1) SU631464A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2464243C1 (en) * 2011-02-22 2012-10-20 Открытое акционерное общество "Обнинское научно-производственное предприятие "Технология" Method of hardening glass articles
US9296638B2 (en) 2014-07-31 2016-03-29 Corning Incorporated Thermally tempered glass and methods and apparatuses for thermal tempering of glass
US10611664B2 (en) 2014-07-31 2020-04-07 Corning Incorporated Thermally strengthened architectural glass and related systems and methods
US11097974B2 (en) 2014-07-31 2021-08-24 Corning Incorporated Thermally strengthened consumer electronic glass and related systems and methods
US11643355B2 (en) 2016-01-12 2023-05-09 Corning Incorporated Thin thermally and chemically strengthened glass-based articles
US12043575B2 (en) 2019-08-06 2024-07-23 Corning Incorporated Glass laminate with buried stress spikes to arrest cracks and methods of making the same

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2464243C1 (en) * 2011-02-22 2012-10-20 Открытое акционерное общество "Обнинское научно-производственное предприятие "Технология" Method of hardening glass articles
US10005691B2 (en) 2014-07-31 2018-06-26 Corning Incorporated Damage resistant glass article
US9776905B2 (en) 2014-07-31 2017-10-03 Corning Incorporated Highly strengthened glass article
US9783448B2 (en) 2014-07-31 2017-10-10 Corning Incorporated Thin dicing glass article
US9802853B2 (en) 2014-07-31 2017-10-31 Corning Incorporated Fictive temperature in damage-resistant glass having improved mechanical characteristics
US9975801B2 (en) 2014-07-31 2018-05-22 Corning Incorporated High strength glass having improved mechanical characteristics
US9296638B2 (en) 2014-07-31 2016-03-29 Corning Incorporated Thermally tempered glass and methods and apparatuses for thermal tempering of glass
US10077204B2 (en) 2014-07-31 2018-09-18 Corning Incorporated Thin safety glass having improved mechanical characteristics
US10233111B2 (en) 2014-07-31 2019-03-19 Corning Incorporated Thermally tempered glass and methods and apparatuses for thermal tempering of glass
US10611664B2 (en) 2014-07-31 2020-04-07 Corning Incorporated Thermally strengthened architectural glass and related systems and methods
US11097974B2 (en) 2014-07-31 2021-08-24 Corning Incorporated Thermally strengthened consumer electronic glass and related systems and methods
US11891324B2 (en) 2014-07-31 2024-02-06 Corning Incorporated Thermally strengthened consumer electronic glass and related systems and methods
US11643355B2 (en) 2016-01-12 2023-05-09 Corning Incorporated Thin thermally and chemically strengthened glass-based articles
US12043575B2 (en) 2019-08-06 2024-07-23 Corning Incorporated Glass laminate with buried stress spikes to arrest cracks and methods of making the same

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