SU952784A1

SU952784A1 - Roll for conveying glass sheet

Info

Publication number: SU952784A1
Application number: SU813236043A
Authority: SU
Inventors: Игорь Александрович Майстренко; Валерий Иванович Агибалов; Валерий Иванович Мальцев; Владимир Иванович Потапов
Original assignee: Всесоюзный научно-исследовательский институт технического и специального строительного стекла
Priority date: 1981-01-12
Filing date: 1981-01-12
Publication date: 1982-08-23

Description

Изобретение относитс к оборудованию производства листового стекла и преимущественно может быть использовано на стекольных заводах при закалке и отжиге листового стекла , примен емого .цл остеклени транспорта и в строительстве.The invention relates to equipment for the production of sheet glass and can advantageously be used in glass factories during quenching and annealing of sheet glass used in transport glazing and in construction.

Известен валок дл транспортировани листов стекла в термических печах. Этот валок выполнен из металла , покрытого керамическим материалом . Покрытие наноситс методом плазменного напьАпени керамики или другого материала непосредственно на металлический, стержень l .Known roller for transporting glass sheets in heat-treating furnaces. This roll is made of metal coated with ceramic material. The coating is applied by the plasma spray method of ceramics or other material directly on the metal, rod l.

СНедостатком такой конструкции вл -. етс недолговечность срока службы покрыти валка, которое растрескиваетс , и отслаиваетс из металлического стержн при нагреве валка ввиду разного коэффициента термического расширени керамики и. металла, а также разрушение покрыти от деформации металлического стержн из-за неравномерного нагрева валка и знакопеременной нагрузки, испытываемой валком.The disadvantage of this design is ow. The fragility of the service life of the roll coating, which cracks, and peels off from the metal rod when the roll is heated due to the different coefficient of thermal expansion of ceramics and. metal, as well as the destruction of the coating from the deformation of the metal rod due to uneven heating of the roll and the alternating load experienced by the roller.

Известен также валок, выполненный в виде металлического с напрессованными на него кольцами из асбеста. Кольца жестко ст )1уты междуAlso known is the roll, made in the form of a metal with asbestos rings pressed on it. The rings are rigidly st) between feet

собой в осевом направлении гайками с шайбами 2 .axially nut with washers 2.

Недостатком известной конструкции вл етс недолговечность срока службы асбестовых колец при высоких температ урах . Например, температура в печах нагрева стекла под закалку превышает 750°С, а необратимое снижение прочности и эластичности волокон ас10 беста, привод щее к осыпанию асбеста, начинаетс при 500С.A disadvantage of the known construction is the short life of the asbestos rings at high temperatures. For example, the temperature in glass heating furnaces for hardening exceeds 750 ° C, and an irreversible decrease in the strength and elasticity of as10 best fibers, leading to the shedding of asbestos, begins at 500 ° C.

Кроме того, ввиду разности коэффициента термического расширени металла и асбеста при нагреве металли15 ческий стержень удлин етс больше, чем покрытие из асбестовых колец, и между кольцами по вл ютс зазоры.По вление зазоров в покрытии ведет к ухудшению качества поверхности нагре20 того стекла, соприкасающегос .с покрытием .In addition, due to the difference in the coefficient of thermal expansion of metal and asbestos during heating, the metal rod lengthens more than the coating of asbestos rings, and gaps appear between the rings. The appearance of gaps in the coating leads to a deterioration in the surface quality of the heated glass in contact. with coating.

Целью изобретени вл етс повышение качества листового стекла.The aim of the invention is to improve the quality of sheet glass.

Поставленна цель достигаетс тем, The goal is achieved by

Claims

25 that a roller for transporting glass sheet containing rings mounted on a metal rod and fasteners fixed thereon is provided with a spring mounted between the fasteners. One of the sides of each ring is made with a protrusion, and the other with a mating recess, with the rings mounted with a radial clearance on the rod, made hollow and with a longitudinal groove. Moreover, the rings can be made of quartz ceramics. FIG. 1 shows a swath, the section in FIG. 2 is the same as the embodiment of FIG. 3 is a section A-A in FIG. 2. The roller contains a metric rod 1 with a stop 2 and a set of rings 3 FROM quartz ceramics, fastening elements — a retaining washer 4 and a nut 5 and a spring 6 located between them. Each ring has a protrusion 8 on one of its side, for example, in the form of a semicircle or angle, and on the other side, a recess 9 that repeats the profile of the protrusion. The metal rings 3 of quartz ceramics are mounted on the metal rod 1 with yno rum 2 mounted with a radial clearance and spring through the retaining washer 4 with the help of nuts 5 with the help of nuts 5 with a force ensuring fixation of the rings in the radial direction. When operating in a furnace, the roll is heated, lengthened and expanded, with the ceramic and the metal being different. With the proposed roll design, the non-uniformity of the axial elongation is compensated for by the spring, the diameter of the gap between the rings and the rod, or the longitudinal section of the rod. The normalized force springs allow you to wear fragile but well working for the wear of ceramic rings as heat resistant coatings of the roll. A steady axial compression of the rings by a spring and a small gap between the metal bar and the rings eliminates the possibility of gaps between the rings at a temperature elongation of 5 b (Ree.1 of the metal base. The gap between the rings and the metal bar prevents the rings from breaking during deformation of the metal bar temperature and load. In addition, the straightness of the outer forming roll is maintained even when the metal base is deformed within the gap between the metal rod and the inner diameter m of ceramic rings, which provides a smooth, horizontal surface of plastic sheet glass, improves the quality of glass by reducing surface flaws. The proposed design of the rolls is designed to work primarily on horizontal tempering of glass, where the rolls work with a certain thermal load. in these conditions provides improved roll co-design. Invention A roller for transporting sheet glass containing 1: 1 rings, mounted on e to a metal rod and fasteners fixed on it, characterized in that, in order to improve the quality of sheet glass, it is provided with a spring mounted between the fastening elements, one of the lateral sides of each ring is made with a protrusion, and the other with a matching recess moreover, the rings are fitted with a radial gap on the rod, made hollow and with longitudinal grooves. 2. Roll according to claim 1,0 aphids and with the fact that the rings are made of quartz ceramics. Sources of information taken into account in the examination 1.Patent of France No. 2301482, cl. From 03 to 25/00, published 1976.

2. US Patent 3,853,525, incl. 65-181, published. 1974.