Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for efficiently preparing chalcogenide glass thin rod

A technology of chalcogenide glass and thin rod, which is applied in glass pressing, glass forming, glass manufacturing equipment and other directions, can solve the problems of high cost and low production efficiency, and achieve improved production efficiency, uniform diameter, time saving and cost saving. The effect of material cost

Active Publication Date: 2021-07-23
杭州光学精密机械研究所
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low production efficiency and high cost in the production of chalcogenide glass thin rods in the prior art, the present invention provides a method for efficiently preparing chalcogenide glass thin rods, which can significantly improve the production efficiency and production efficiency of chalcogenide glass thin rods. reduce its production cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for efficiently preparing chalcogenide glass thin rod
  • Method for efficiently preparing chalcogenide glass thin rod
  • Method for efficiently preparing chalcogenide glass thin rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A method for efficiently preparing thin chalcogenide glass rods, the specific steps are as follows:

[0038] (1) Large diameter chalcogenide glass was prepared in vacuum quartz ampoule by conventional melting-quenching method.

[0039] (2) Smoothing and polishing both ends of the large-diameter chalcogenide glass prepared in step (1) to obtain a cylindrical preform glass for extrusion.

[0040] (3) Prepare a set of multi-rod extrusion dies made of stainless steel, such as figure 1 As shown, the mold includes a piston 4, a sleeve 5 and a molding nozzle 6, and the molding nozzle 6, the preform glass obtained in step (2), and the piston 4 are put into the sleeve 5 in sequence.

[0041] Such as figure 1 As shown, the outer diameters of the piston 4 and the forming nozzle 6 are smaller than the inner diameter of the sleeve 5 .

[0042] Such as figure 2 As shown, the forming nozzle 6 comprises a plurality of funnel-shaped through holes 6-1, the diameter of the inlet 6-2 ...

Embodiment 2

[0050] Adopt the method for embodiment 1 to prepare the As that diameter is 20mm 40 Se 60 Thin rods of chalcogenide glass, the specific steps are as follows:

[0051] (1) Prepare As with a diameter of 120 mm in a vacuum quartz ampoule by conventional melting-quenching method 40 Se 60 Chalcogenide glass.

[0052] (2) The prepared As with a diameter of 120mm 40 Se 60 Both ends of the chalcogenide glass are flattened and polished to obtain a cylindrical preform glass with a height of 100mm.

[0053] (3) Prepare a set of multi-rod extrusion molds, which include a piston with an outer diameter of 120mm, a sleeve with an inner diameter of 120.5mm and a molding nozzle with an outer diameter of 120mm; figure 2 As shown, the forming nozzle contains 7 funnel-shaped through holes, the diameter of the entrance of the through hole is 26mm, and the diameter of the exit of the through hole is 20mm; image 3 As shown, the distance between the edges of the single through-hole outlet on...

Embodiment 3

[0063] Adopt the method for embodiment 1 to prepare the Ge that diameter is 15mm 28 Sb 12 Se 60 Thin rods of chalcogenide glass, the specific steps are as follows:

[0064] (1) Prepare Ge with a diameter of 100 mm in a vacuum quartz ampoule by conventional melting-quenching method 28 Sb 12 Se 60 Chalcogenide glass.

[0065] (2) Ge with a diameter of 100mm 28 Sb 12 Se 60 Both ends of the chalcogenide glass were flattened and polished to obtain a 75mm-high cylindrical glass preform.

[0066] (3) Prepare a set of multi-rod extrusion molding dies, which include a piston with an outer diameter of 100mm, a sleeve with an inner diameter of 100.5mm, and a forming nozzle with an outer diameter of 100mm; the forming nozzle includes 9 funnel-shaped through holes, and the diameter of the through hole inlet 24mm, the outlet diameter of the through hole is 15mm; Figure 4 As shown, the distance between the edges of the single through-hole outlet on the bottom surface of the formin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
heightaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for efficiently preparing a chalcogenide glass thin rod, which comprises the following steps of firstly, preparing large-caliber chalcogenide glass in a vacuum quartz ampoule by using a melting-quenching method, and then processing and polishing the two ends of the large-caliber chalcogenide glass to obtain preform glass, and finally, acquiring the chalcogenide glass thin rod through a hot extrusion way by combining an extruder with a porous extrusion die. According to the preparation method disclosed by the invention, more than seven chalcogenide glass thin rods with the diameter of 5-20mm and the length of more than 30cm can be obtained through one-time extrusion, the material utilization rate reaches more than 90%, the production efficiency of the chalcogenide glass thin rods can be remarkably improved, and the production cost of the chalcogenide glass thin rods can be remarkably reduced. The chalcogenide glass thin rod prepared by using the method disclosed by the invention is uniform in diameter and good in optical quality, and can be used for preparing a small-caliber infrared lens.

Description

technical field [0001] The invention belongs to the technical field of secondary thermoforming of chalcogenide glass, and in particular relates to a method for efficiently preparing thin rods of chalcogenide glass. Background technique [0002] Chalcogenide glasses are amorphous materials based on chalcogen elements (including sulfur, selenium, and tellurium elements), which have excellent infrared light transmission properties, low thermo-optic coefficients, good thermal and chemical stability, It is considered to be an ideal infrared lens material. At present, chalcogenide glass lenses have been widely used in infrared thermal imaging systems, and play an important role in infrared temperature measurement, security monitoring, law enforcement search and rescue, national defense and security. [0003] In the civilian field, the diameter of the chalcogenide glass lens used is generally 5-20mm, and the lens of this diameter needs to be processed with a glass rod of a correspo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C03B11/06C03B25/00C03C3/32
CPCC03B11/06C03B25/00C03C3/321
Inventor 杨志勇任和张龙
Owner 杭州光学精密机械研究所