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Hits: 18072
An increase in glass strength can be achieved by modifying the surface layer. Considered: gradient glasses, in which the strength of the glass increases due to the difference in TCLE over the thickness of the glass; ion bombardment, in which large atoms are embedded (implanted) into glass in a strong electromagnetic field; protective coatings (temporary and permanent); chemical hardening. The considered methods provide an increase in the strength of glass by increasing the strength of its surface, without changing the bulk strength
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Hits: 18027
A method has been developed for producing an optical fiber with a refractive reflective cladding formed in the process of drawing from a single-filter vessel as a result of the interaction of the glass melt of the light-guiding core with the die material. When using compositions of glasses with highly volatile components for the light-guiding vein to achieve the maximum correspondence of the compositions of the original glass and the light-guiding vein, the method provides for the creation of a polycrystalline or vitreous layer of the same
composition over the surface of the molten glass during drawing
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Hits: 18024
Optical absorption and up-conversion luminescence of oxyfluoride glasses of the SiO
2 -PbO-PbF
2 -CdF
2 system coactivated with Yb
3+ -RE
3+ (where RE = Er, Tm, Ho, Dy, Pr or Tb). When excited by a laser diode in the IR range (960 nm), intense green, blue, and red luminescence was obtained. The color characteristics of up-conversion luminescence were determined using the CIE 1931 system. The efficiency of energy transfer from Yb
3+ ions to RE
3+ ions was determined, which was> 70% for RE = Er, Tm and Ho. For glass with Yb - Tb ions, the efficiency of cooperative energy transfer reaches 10%
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Hits: 33020
The features of designing lines for transporting glass batch from compound shops to glass-making furnaces are considered. Variants of schemes using aboveground and underground galleries are presented. The advantages and disadvantages of various transport and technological equipment, which affect the quality of the glass batch, have been determined. Il. 5, bibliography: 2 titles.
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Hits: 34030
The features of using vibrating feeders with an unbalanced electric drive for dosing bulk components of a glass batch are considered. Designs of vibrating feeders are presented that exclude the influence of resonance phenomena on the dosing accuracy when the unbalanced vibrator is turned off. The principle of vibration-gravitational feeding of material is proposed, which makes it possible to carry out a two-speed dosing mode with a single-speed operation of an unbalanced vibrator. Il. 3, bibliography: 1 title.
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Hits: 40717
The features of dosing of glass melt decolorizers and preparation of premixes with various fillers (sand, soda, feldspar) on their basis are considered. An algorithm for dosing Se and CoO is proposed, which makes it possible to exclude the adhesion of these materials to the bottom of the rotary bowl of a strain gauge weighing batcher. Il. 1, bibliography: 3 titles.
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Hits: 41690
An algorithm for controlling the differentiated loading of the charge into the glass-making furnace is considered depending on the category of the charged portions of the charge. Portions of the charge with an increased content of refractory components are loaded into the zone of the furnace with an increased temperature of the glass melt, and portions of the charge with an increased content of low-melting components are loaded into the zone of the furnace with a low temperature. Il. 2, bibliography: 3 titles.
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Hits: 41669
The results of the development and 10-year experience of operation of automated multichannel systems for technological control of the thickness of float glass tape, which resulted in their serial production, have been summed up. Tab. 1, ill. 5, bibliography: 2 titles.
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Hits: 45241
The issues of increasing the efficiency of vibration mechanisms due to the implementation of the mode of multiple Raman parametric resonance are considered. As a drive of the vibration mechanism, it is proposed to use a parametric vibration exciter, in which the driving force is created as a result of the interaction of swinging pendulums located in the field of centrifugal forces of inertia of the rotating rotor and in the field of gravity, with the working body connected to the base by elastic elements. Il. 3, bibliography: 7 titles.
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Hits: 47040
It is shown that the equipment of weighing hoppers-batchers with anti-sticking lining plates makes it possible to increase not only the accuracy of material dosing and equipment productivity, but also its trouble-free operation. Il. 2, bibliography: 3 titles.
