SU662509A1

SU662509A1 - Method of obtaining articles from powdery glass

Info

Publication number: SU662509A1
Application number: SU752171704A
Authority: SU
Inventors: Виолета Борисовна Алешкова; Владилена Сергеевна Виноградова; Валентина Ивановна Казак; Лев Федорович Юрков
Original assignee: Предприятие П/Я Г-4219
Priority date: 1975-09-12
Filing date: 1975-09-12
Publication date: 1979-05-15

Description

(54) СПОСОБ ПОЛУЧЕНИЯ ИЗДЕЛИЙ ИЗ ПОРОШКОВОГО СТЕКЛА марки С 52-1 С размерами частиц от 0,49 --до 0,54 мм. Оно было получено дроблением с испольэование.м мелющих тел из стек той же марки, что и стекло, которое дроб т. Затем порошок стекла просе вали через сита и отбирали фракцию с сита со 144 отв./см 2 , прошед шую через сито с числом отверстий на см , рав ным 121, после этого стекло проМьтали дистиллированной водой, вькушйвали и обрабатывали раствором CoCPj (20% вес.) в течение 20-30 мин. Порошок стекла, смоченный раствором, высушивали в сушильном шк фу при 100-110°С в течение 2-3 ч. Обработанный таким образом порошок стекла засыпали в графитовую форму и спекали в среде азота при темпера туре, превьлиающей температуру разм гчени стекла. После завершени пр цесса спекани температуру снижали и из охлажденной формы извлекали го товое изделие. П р и м е р 2.Проводили изготовле ние металло-стекл нных многоштырьковых ножек с асимметрично расположеннЫм/;стекл нным штенгелем и ба:Ндажом Порошок стекла с размером частиц от 0,5 до 6, 5 мм обрабатывали раствором Со (N03)2 (25 вес.%) в течение 20-30 мин., затем высушивали при lOO-llO C в течение 2-3 ч. Обработанный порошок стекла засыпали в гр фитовую форму с предварительно вста ленными в нее стекл нным штенгелем, металлическими вводами и бандажом. (54) METHOD OF OBTAINING PRODUCTS FROM POWDER GLASS brand C 52-1 With a particle size of 0.49 - up to 0.54 mm. It was obtained by crushing using grinding media from a stack of the same brand as the glass that was crushed. Then the glass powder was sifted through a sieve and a fraction was collected from a sieve with 144 holes / cm 2, passing through a sieve with holes on cm, equal to 121, then the glass was cleaned with distilled water, vykushyval and treated with a solution of CoCPj (20% by weight) for 20-30 minutes. The glass powder wetted with the solution was dried in a drying chamber at 100–110 ° C for 2–3 h. The glass powder thus treated was poured into a graphite form and sintered in a nitrogen atmosphere at a temperature that exceeds the glass softening temperature. After completion of the sintering process, the temperature was lowered and the finished product was removed from the cooled mold. EXAMPLE 2. Metal-glass multi-pin feet were manufactured with asymmetrically located /; glass rod and ba: Ndazhom Glass powder with a particle size from 0.5 to 6, 5 was treated with Co (N03) 2 solution (25 wt.%) For 20–30 min., Then dried at lOO – llO C for 2–3 h. Treated glass powder was poured into a phyto mold with a glass pillar, metal inlets and a bandage preloaded in it .

Claims

662509 The assembled form was heated in a nitrogen atmosphere to a sintering temperature, after which the form was cooled and the finished metal-glass product was removed. The use of this invention provides, in comparison with the existing methods, the following adherence to TV a: - an increase in the chemical resistance of powder glass products; - an increase of 2.5 times the thermomechanical strength of a powder product over the entire mass and at a junction of powder glass with metal; -increased service life and increased reliability of vacuum devices. The invention The method of obtaining powder glass products, including molding, sintering, processing in solutions with surface-active substances and drying, is excellent and with the fact that, with the aim of increasing the strength of products, processing in solutions of surface-active substances is carried out before molding. . . Sources of information taken into account in the examination 1. USSR author's certificate number 295156, cl. -N 01 J 9/26, 1969.

2. The copyright certificate of the USSR 383692, cl. From 03 to 19/06, 1971.