SU1544729A1 - Feeder of refractory melt for fibre from glass or rock - Google Patents

Abstract

The invention relates to the production of fibrous materials from mineral melts by vertical blowing or pulling them out with jet energy carriers. The invention is aimed at increasing the service life and sustainability of the process. The heat-resistant alloy feeder for the manufacture of glass and rock fibers consists of a die plate 1 with spinnerets, side walls 2, horizontal fields 3, current leads 4. On the inner side of the spinneret plate, cylindrical projections are made coaxially with the spinnerets 5-0.8 height of the side wall of the feeder, the diameter is 2-2.4 diameter of the die. 1 tab. 2 Il.

Description

FIG. 2

The invention relates to the production of fibrous materials from mineral melts by vertical blowing or pulling them with jet energy carriers.

The aim of the invention is to increase the service life and stability of the tenological process.

Figure 1 shows the general view of the feeder; on figs2 - section aa on

FIG about 1 about

A heat-resistant alloy feeder for the manufacture of glass and rock fibers consists of a die plate 1 with spinnerets located on the opposite side of the feeder bath created by the side walls 2. The side walls of the feeder go into horizontal fields 3 ,, From the opposite ends, the feeder contains current leads 4 s Cylindrical protrusions are made coaxially with dies on the inner side of the die plate 5 o

The feeder works as follows.

A melt of glass melt enters the spin plate 1 with the spinnerets and, as it passes through the spinnerets, forms bulbs on their outer side. Depending on the product produced, the fibers are drawn onto the receiving drum or the fibers are drawn by the energy carrier (steam, air, etc.). 0 The bathing structure of the feeder spouting field limited by side walls 2 provides the optimum temperature for preparing the melt before it is drawn off by the energy carrier, , To fasten the feeder to the feeder of the furnace and prevent melt flowing between the feeder and feeder, the latter is provided with horizontal fields 3, which are lined and pressed against the pocket of the water feeder hlazhdaemoy frame "Temperature fields is reduced and eliminated melt flow around the feeder. A passing electric current from the transformer to the current conductors 4 maintains the desired temperature on the nozzle field to maintain a sustainable fiber formation process. The presence of protrusions 5 on the inside of the nozzle floor allows the operation of mechanical cleaning of the nozzle orifices from refractory foreign objects.

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They are removed from the spinnerets and are deposited in the bottom part of the feeder bath, which, in turn, allows increasing the lifespan of the feeders and improving the quality of the produced fiber due to the absence of pulsation in the movement of the melt through the spinnerets and excessive breakage of the fiber. in the optimum temperature zone of its preparation, which also has a positive effect on the quality of the fiber.

The protrusions are made in the form of cylinders with casting slopes in the direction of the lower base, which allows to produce feeders by casting. The height of the protrusions is limited by the optimum selection area of the prepared molten glass. melt flow through the spinnerets and, as a result, an increase of the fillet in the fiber o. In addition, the die openings quickly become clogged with refractory objects. With an increase in the height of the protrusions (more than 0.8 in the height of the side wall), unprepared glass mass is selected (low melt viscosity), which entails obtaining fibers of degraded quality with a large number of non-fibrous inclusions,

The strength characteristics of the material of the feeder are limited to the lower limit of the size of the diameter of the protrusions, equal to two diameters of the nozzle holes, since when drilling dies, the walls of the protrusions may be crushed and broken. With an increase in the diameter of the protrusions (more than 2.4 of the diameter of the nozzle holes), the useful volume of the working area of the feeder decreases and the glass mass enters the spinnerets not sufficiently heated, which also increases the number of non-fibrous inclusions in the fiber.

Manufactured and tested under production conditions known fc best performance indicators) and the proposed feeders in an amount of 5 pcs.

The data of pilot tests are presented in the table.

Claims (1)

Formula of inventions A heat-resistant alloy feeder for the manufacture of fiber IT and glass and rocks, comprising a housing with side walls, current leads and a draw plate, with the aim of increasing Neither the service life nor the stability of the technological process, the spout plate on the inner side is made with a protrusion in the form of cylinders coaxially with dies, whose height is 0.5-0.8 of the side wall of the feeder, and the diameter is 2-2.4 diameters of the die. Editor NaGunko Compiled by N.Ilinykh Tehred L. Oliynyk Proof-reader I. Erdeyi Order 467 Circulation 395 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 + + + + + + H- + -h + I 1 Subscription