SU1004736A1

SU1004736A1 - Heat resistant plate for firing thin ceramic articles

Info

Publication number: SU1004736A1
Application number: SU782704134A
Authority: SU
Inventors: Владимир Петрович Минеев; Наталья Демьяновна Григорьева; Сергей Иванович Берендеев; Михаил Павлович Горбань
Original assignee: Украинский Научно-Исследовательский Институт Стекольной И Фарфоро-Фаянсовой Промышленности
Priority date: 1978-12-29
Filing date: 1978-12-29
Publication date: 1983-03-15

Description

1 .one .

Изобретение относитс к керамическому производству и может быть использовано при термической обработке фарфоро-фа нсовых изделий.The invention relates to ceramic production and can be used in the heat treatment of porcelain-fna products.

Известна термостойка керамическа плита дл обжига тонкокерамнческих изделий, имеюща гладкую рабочую поверхность и нерабочую поверхность с ребром жесткости, расположённым по ее периметру fl .The known heat-resistant ceramic plate for firing fine ceramic articles has a smooth working surface and a non-working surface with a stiffener located along its perimeter fl.

Недостатком указанной конструкции вл етс низка долговечность плиты при эксплуатации в результате растрео кивани ее при термических ударах.The disadvantage of this design is the low durability of the slab during operation as a result of its shaking during thermal shocks.

Целью изобретени вл етс увеличение долговечности термостойкой плиты путем предупреждени распространени трещины.The aim of the invention is to increase the durability of the heat-resistant plate by preventing the propagation of cracks.

Цель достигаетс тем, что в термостойкой плите дл обжига тонкокерами- ческих изделий, имеющей гладкую рабочую поверхность и нерабочую поверхность с ребром жесткости, .расположенным по ее периметру, на нерабочей поверхности выполнено несколько углублений, расположенных в шахматном пор дке Н .представл ющих собой глухие конические отверсти .The goal is achieved by the fact that in a heat-resistant slab for firing fine-ceramic products having a smooth working surface and a non-working surface with a stiffener located along its perimeter, several recesses are made on the non-working surface located in a checkerboard pattern H representing deaf tapered bore.

На фиг. 1 дана термостойка пли та, общий вид; на фиг. 2 - то же, с& чение А - А на фиг. 1.FIG. 1 given heat resistant plate, general view; in fig. 2 is the same with & Step A - A in FIG. one.

Термостойка плита 1 пр моугольной формы выполнена с углублени ми jj 2 в виде глухих конических отверстий, расположенных в шахматном пор дке на нерабочей поверхности 3 шшты. Рабоча поверхность 4 плиты выполнена гладкой.The heat resistant plate 1 is rectangular in shape with recesses jj 2 in the form of blind conical holes located in staggered order on the non-working surface 3 of the pin. The working surface 4 of the plate is made smooth.

Claims

, j The relative sizes of blind conic holes are sub-experimentally, depending on the material from which the plate is made, the heat treatment modes and the thickness of the plate. 20 For example, in the manufacture of carborundum fiber, containing,%: silicon carbide 6O; shly}) grain N Yu 35; clay druzhkovsk 5; (more than 1OO%) metallic silicon 10 and moisture dried in the chamber dryer at T 443К and burned in the forges at T 1703K, the ratio of the depth of the blind, tapered hole to the thickness p / shty DEP5KNO be at least 1/2 and not more than 2/3 V In such a heat-resistant plate structure, a crack arising during operation spreads to the nearest conical hole, which reduces the stress concentration in the area of the trap and stops its further propagation. Moreover, the spread of cracks is prevented not only to the depth of the conical hole, but throughout the thickness of the slab, which is caused by the fragile destruction of the bottom of the blind conical hole when cracks pass through it. 1 36 Invention A heat-resistant plate for firing fine-ceramic products, having a smooth working surface and a non-working surface with a stiffener located along its perimeter, characterized in that, with a prolonged & life expectancy by preventing the propagation of a burr, to the non-working surface of the plate several recesses, arranged in a checkerboard pattern, which are blind and tapered holes. Sources of information taken into account during the examination 1. USSR Copyright Certificate No. 314992, cl. F 27 D 1/04, 1971 (prototype) about