CN106316101A

CN106316101A - Purple transparent glass with low expansion coefficient and preparing method thereof

Info

Publication number: CN106316101A
Application number: CN201610649192.8A
Authority: CN
Inventors: 欧小宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-10
Filing date: 2016-08-10
Publication date: 2017-01-11

Abstract

The invention discloses a purple transparent glass with low expansion coefficient and a preparing method thereof. The purple transparent glass is prepared from, by weight, SiO2 60-63%, CaO 1-4%, Al2O3 7-10%, B2O3 17-20%, Na2O 0.2-1%, Li2O 0.2-1%, CeO2 1-2%, TiO2 1-2%, ZnO 0.5-2.5%, ZrO2 1.5-2.5% and MnO2 1-2%; the preparing method comprises the steps of preparing materials, mixing, batch deironing treatment, fusion, cooling, compressing moulding, annealing, heat treatment, accurate grinding, testing, stoving, packaging and putting in storage. The batch of purple transparent glass with low expansion coefficient has low iron content by deironing treatment, glass coloring is not affected, and the prepared glass has small plane stress, uniform color and low expansion coefficient by low temperature heat treatment after annealing.

Description

A kind of low-expansion coefficient purple clear glass and preparation method thereof

Technical field

The present invention relates to glass making techniques field, be specifically related to a kind of low-expansion coefficient purple clear glass and preparation thereof Method.

Background technology

Object has breathing phenomenon owing to temperature changes.Along with temperature raises, in glass, the warm-up movement amplitude of particle increases, Particle spacing becomes big, and outward manifestation is for expanding.But the increase of particle spacing, it is necessary to overcome the active force between particle, this work Firmly for oxide glass, it is simply that the bonding force 2z/r2 between various cationes and oxonium ion, the biggest glass swelling of bonding force is just The most difficult, thermal coefficient of expansion is the least；Otherwise, the thermal coefficient of expansion of glass is the biggest；The key of Si-O key is strong relatively big, so quartz glass There is the least thermal coefficient of expansion.

Manganese dioxide is black amorphous powder or black rhomboidal crystal, is the most stable of oxide of manganese, often arises in In pyrolusite and manganese nodule, it is mainly used as depolarizer of dry cells, the catalyst of compound probability and oxidant, glass industry and enamel The coloring agent of industry, depigmenting agent, deferrization agent etc..

At present, SiO2-B2O3-Al2O3-Na2O system is low thermal coefficient of expansion, the master of light production employing Want mode, but owing to SiO2 and Al2O3 belongs to infusibility composition, the coefficient of expansion to be made is low, and alkali metal content is necessary for the lowest, causes The high temperature viscosity of glass is the biggest, it is difficult to produces the quality index such as bubble, striped and reaches the glass of standard.

Summary of the invention

The present invention is for overcoming deficiency of the prior art, it is provided that a kind of low-expansion coefficient blue transparent glass and preparation side thereof Method, is achieved through the following technical solutions.

A kind of low-expansion coefficient purple clear glass, its percentage by weight consists of: SiO2:60-63%, CaO:1-4%, Al2O3:7-10%, B2O3:17-20%, Na2O:0.2-1%, Li2O:0.2-1%, CeO2:1-2%, TiO2:1-2%, ZnO:0.5-2.5%, ZrO2:1.5-2.5%, MnO2:1-2%.

Further, in described low-expansion coefficient purple clear glass, the weight percent content sum of B2O3 Yu Al2O3 More than 25%.

Further, in described low-expansion coefficient purple clear glass, the weight percent content sum of Na2O Yu Li2O Less than 1.8%.

The preparation method of a kind of low-expansion coefficient purple clear glass, described preparation method is carried out in the steps below: (1) Dispensing is carried out according to the formula of low-expansion coefficient purple clear glass；(2) use plough coulter type batch mixer that dispensing is mixed； (3) batch is carried out except ferrum processes；(4) batch is melted 25-27 hour at 1560～1660 DEG C, obtain high temp glass liquid； (5) high temp glass liquid is cooled to 1340～1380 DEG C；(6) die apparatus is used to be made by the high temp glass hydraulic pressure after cooling Type, forming temperature is 1260～1290 DEG C；(7) annealing: formed glass is put into annealing furnace and makes annealing treatment, annealing temperature Degree is 480～580 DEG C, and the time is 28-32 minute；(8) glass after annealing is carried out Low Temperature Heat Treatment；(9) fine grinding；(10) inspection Test；(11) dry；(12) packaging；(13) warehouse-in.

Further, in the step (8) of described preparation method, Low Temperature Heat Treatment temperature is 170～230 DEG C.

The invention have the benefit that batch passes through except ferrum processes, iron tramp content is low, does not affect glass coloration, moves back Through Low Temperature Heat Treatment after fire, the glass planar stress of preparation is little, color even, the coefficient of expansion are low.

Detailed description of the invention

Embodiment 1

A kind of low-expansion coefficient purple clear glass, its percentage by weight consists of: SiO2:63%, CaO:1%, Al2O3:10%, B2O3:17%, Na2O:0.3%, Li2O:0.9%, CeO2:1%, TiO2:2%, ZnO:1.3%, ZrO2: 1.5%, MnO2:2%.

The preparation method of a kind of low-expansion coefficient purple clear glass, is carried out: (1) is according to low-expansion coefficient in the steps below The formula of purple clear glass carries out dispensing；(2) use plough coulter type batch mixer that dispensing is mixed；(3) batch is carried out Except ferrum processes；(4) batch is melted 27 hours at 1560 DEG C, obtain high temp glass liquid；(5) high temp glass liquid is cooled to 1340 ℃；(6) using die apparatus by compressing for the high temp glass liquid after cooling, forming temperature is 1260 DEG C；(7) annealing: Formed glass being put into annealing furnace make annealing treatment, annealing temperature is 520 DEG C, and the time is 31 minutes；(8) glass after annealing Carrying out Low Temperature Heat Treatment, heat treatment temperature is 190 DEG C；(9) fine grinding；(10) inspection；(11) dry；(12) packaging；(13) warehouse-in.

Embodiment 2

A kind of low-expansion coefficient purple clear glass, its percentage by weight consists of: SiO2:61%, CaO:2%, Al2O3:8%, B2O3:19%, Na2O:0.7%, Li2O:0.8%, CeO2:1.5%, TiO2:1%, ZnO:2.5%, ZrO2: 2.5%, MnO2:1%.

The preparation method of a kind of low-expansion coefficient purple clear glass, is carried out: (1) is according to low-expansion coefficient in the steps below The formula of purple clear glass carries out dispensing；(2) use plough coulter type batch mixer that dispensing is mixed；(3) batch is carried out Except ferrum processes；(4) batch is melted 25 hours at 1660 DEG C, obtain high temp glass liquid；(5) high temp glass liquid is cooled to 1380 ℃；(6) using die apparatus by compressing for the high temp glass liquid after cooling, forming temperature is 1290 DEG C；(7) annealing: Formed glass being put into annealing furnace make annealing treatment, annealing temperature is 580 DEG C, and the time is 28 minutes；(8) glass after annealing Carrying out Low Temperature Heat Treatment, heat treatment temperature is 230 DEG C；(9) fine grinding；(10) inspection；(11) dry；(12) packaging；(13) warehouse-in.

Embodiment 3

A kind of low-expansion coefficient purple clear glass, its percentage by weight consists of: SiO2:60%, CaO:4%, Al2O3:7%, B2O3:20%, Na2O:1%, Li2O:0.4%, CeO2:2%, TiO2:1.5%, ZnO:0.6%, ZrO2: 2%, MnO2:1.5%.

The preparation method of a kind of low-expansion coefficient purple clear glass, is carried out: (1) is according to low-expansion coefficient in the steps below The formula of purple clear glass carries out dispensing；(2) use plough coulter type batch mixer that dispensing is mixed；(3) batch is carried out Except ferrum processes；(4) batch is melted 26 hours at 1590 DEG C, obtain high temp glass liquid；(5) high temp glass liquid is cooled to 1370 ℃；(6) using die apparatus by compressing for the high temp glass liquid after cooling, forming temperature is 1280 DEG C；(7) annealing: Formed glass being put into annealing furnace make annealing treatment, annealing temperature is 480 DEG C, and the time is 32 minutes；(8) glass after annealing Carrying out Low Temperature Heat Treatment, heat treatment temperature is 170 DEG C；(9) fine grinding；(10) inspection；(11) dry；(12) packaging；(13) warehouse-in.

Although technical scheme is described in detail by above-described embodiment, but the technical side of the present invention Case is not limited to above example, in the case of without departing from the thought of the present invention and objective, to technical scheme institute Any change done falls within claims of the present invention limited range.

Claims

A 1. low-expansion coefficient purple clear glass, it is characterised in that its percentage by weight consists of: SiO2:60-63%, CaO:1-4%, Al2O3:7-10%, B2O3:17-20%, Na2O:0.2-1%, Li2O:0.2-1%, CeO2:1-2%, TiO2:1-2%, ZnO:0.5-2.5%, ZrO2:1.5-2.5%, MnO2:1-2%.
2. a kind of low-expansion coefficient purple clear glass as claimed in claim 1, it is characterised in that: described B2O3 and Al2O3 Weight percent content sum more than 25%.
3. according to a kind of low-expansion coefficient purple clear glass as described in claim 1 or 2, it is characterised in that: described Na2O with The weight percent content sum of Li2O is less than 1.8%.
4. the preparation method of a low-expansion coefficient purple clear glass, it is characterised in that: described preparation method presses following step Suddenly carry out: (1) carries out dispensing according to the formula of low-expansion coefficient purple clear glass；(2) use plough coulter type batch mixer to dispensing Mix；(3) batch is carried out except ferrum processes；(4) batch is melted 25-27 hour at 1560～1660 DEG C, obtain high Temperature vitreous humour；(5) high temp glass liquid is cooled to 1340～1380 DEG C；(6) use die apparatus by the high temp glass after cooling Liquid is compressing, and forming temperature is 1260～1290 DEG C；(7) annealing: formed glass is put into annealing furnace and carries out annealing treatment Reason, annealing temperature is 480～580 DEG C, and the time is 28-32 minute；(8) glass after annealing is carried out Low Temperature Heat Treatment；(9) essence Mill；(10) inspection；(11) dry；(12) packaging；(13) warehouse-in.
The preparation method of a kind of low-expansion coefficient purple clear glass the most as claimed in claim 4, it is characterised in that: described system In the step (8) of Preparation Method, Low Temperature Heat Treatment temperature is 170～230 DEG C.