CN102372423A - Hot bending furnace for colored glazing glass, method for preparing colored glazing toughened hot-bent glass and colored glazing toughened hot-bent glass - Google Patents
Hot bending furnace for colored glazing glass, method for preparing colored glazing toughened hot-bent glass and colored glazing toughened hot-bent glass Download PDFInfo
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Abstract
The invention discloses a hot bending furnace for colored glazing glass, a method for preparing hot-bent glass by using the hot bending furnace and the prepared colored glazing toughened hot-bent glass. The hot bending furnace comprises a furnace body (1), a push-pull base (2), an electric heating device (3) consisting of a fixed heating furnace wire (7) and a movable heating furnace wire (8), and an electrical appliance control device (4). In the process of performing hot bending treatment by using the hot bending furnace, the movable heating furnace wire (8) performs local auxiliary heating on the bending position of glass so as to ensure that the glass is completely attached to a mould at the bending position; the radius of a bending arc of the prepared colored glazing toughened hot-bent glass is less than or equal to 90mm, and the bending radian fully meets design requirements; multiple hot bending treatment such as single bending, continuous bending and the like can be realized; and the defects that the conventional hot-bent glass cannot be completely attached to the appropriate position of the mould, the prepared hot-bent glass has only one bending arc and the radius of the bending arc is more than 90mm are overcome.
Description
Technical field
The present invention relates to a kind of bending furnace, utilize this bending furnace to make method of hot bending glass and products thereof, the method for manufacture of particularly a kind of colored glazed glass bending furnace, colored glaze tempering hot bending glass and the tempering hot bending glassy product of preparation thereof.
Background technology
Hot bending glass is in order to satisfy the quality requirements of modern architecture, and is curved softening by the high-quality glass heats, in die for molding, and the bend glass of processing through annealing again.Pattern is attractive in appearance, and the lines flow smoothly.It has broken through the unicity of sheet glass, and is more versatile and flexible in the use.Hot bending glass is mainly used in internal and external ornament, daylighting top, sightseeing elevator, arch corridor of building etc.Civilian hot bending glass is mainly as glass furniture, glass aquarium, glass hand washing basin, show case, glass etc.
Hot bending glass is that distortion or employing physical construction are bent and is out of shape under the self gravitation effect, by the shape moulding of the mould of making in advance when in bending furnace, letting the sheet glass secondary temperature elevation extremely near softening temperature.Along with the progress of industrial level and the raising day by day of living standards of the people, hot bending glass is also more and more in the use of building, family expenses occasion.Yet; Because the special form of hot bending glass receives the restriction of hot bending glass preparation state of the art, past people is when selecting hot bending glass as finishing material; Can only select the hot bending glass of single transparent, or can only handle at hot bending pad pasting on glass that is shaped and baking vanish.There is not decorative effect in the hot bending glass of single transparent; It is on glass that the hot bending glass of pad pasting is to use glue that pattern is bonded at hot bending, plays decoration function, but the hot bending glass of pad pasting under the sun, sticking to hot bending pattern on glass will soon fade, and bubbles even comes off; The baking vanish glass back of the body lacquer glass that also cries in the field of business; Be to spray paint at the back side of hot bending glass, lacquer nature airing postadhesion is at the back side of hot bending glass, but the lacquer painting sticking power of spraying is less; Lacquer painting comes off easily; The brilliance of baking vanish hot bending glass and color and luster will be degenerated through the time in about 1 year, more can receive the influence of temperature and Changes in weather, in the easy variable color of the environment of humidity, come off.
Colored glaze toughened glass is that the glass glaze is printed on glass surface through special process, handles and forms through oven dry, tempering then.The permanent sintering of colored glaze has antiacid alkali, corrosion-resistant, will never fade, advantage such as safety is high-strength on glass surface, and reflection is arranged and characteristic such as do not have an X-rayed.
Though, family surplus China's hot bending glass enterprise has 500, glass bending furnace has about 2000, is mainly used in to produce hot bending glass for building.In recent years, along with the expansion in construction and decoration market, furniture decoration also increases with hot bending glass greatly, and rise with glass bending furnace and glass heat smelting furnace throughout the country in succession in hand basin bending furnace, aquarium.Hot bending glass market seems flourishing unusually; But the technology of also not producing colored glaze tempering hot bending glass on the market at present generally is to adopt the hot bending glass that does not print perhaps to realize the decorative effect of hot bending glass at hot bending pad pasting on glass; But; If single curved surface along the arc glassy product, can adopt colored glaze to bend steel process, make and have single curved arc decorative effect glass; If hyperboloid, many curved surfaces or irregular arc then can not adopt curved annealing furnace directly to process.
At present; The coarse pit of hot bending product appearance of domestic most of enterprises that can produce hot bending glass is more, and the crooked radian of hot bending glass does not reach design requirements, and it is bad to anneal; Cause hot bending glass very easily to break; And all be to adopt colourless transparent glass or versicolor glass as substrate production, can't carry out the high temperature colored glaze and decorate, decorative effect difference and having nothing in one.
But, prepare colored glaze tempering hot bending glass at present and have following technical barrier:
1) aspect the hot bending heating, now hot bending producer generally adopts whole type of heating, and this type of heating can only the little shallow arc of production angle; This shallow arc radius corresponding＞90mm; When producing the hot bending glassy product of curved arc radius≤90mm, there is applying mould incomplete phenomena, i.e. too shallow the or curved excessive problem of the radian of hot bending glass; The curved arc radius and the curved arc radian deviation of the hot bending glass of preparation are bigger; Poor with mould applying degree, the hot bending glass of preparation can't be installed, and does not reach design requirements.
2) carry out in the hot bending treating processes at glass, temperature control point that adopts usually and treatment time control curve are: normal temperature is raised to 300 ℃ and uses 30 minutes approximately; 300 ℃ are raised to 500 ℃ and use 25 minutes approximately; 520 ℃ are raised to 580 ℃ and use 20 minutes approximately; Soaking time is about 10 to 20 minutes; Cooling is to drop to 520 ℃ by 580 ℃ to be about 40 minutes; 520 ℃ drop to 300 ℃ and use 30 minutes approximately; 300 ℃ dropped to normal temperature about 50 minutes, and in the existing prepared hot bending glass process, the easy heat of glass bursts, and the finished product rate is low, and production cost is high.
3) at the glazing technical elements; Generally can adopt modes such as silk screen printing, roller printing to realize now; Even available spraying or the glazing of Freehandhand-drawing mode, printing precision is not high, if use prior art directly to print hot bending processing then; Glass very easily breaks in heat-processed, and glaze is because the uneven aberration that is heated is serious.
4) make the hot bending die aspect; What hot bending producer generally adopted now is solid mould, hollow mould, these three kinds of forms of bar frame mould; But owing to reasons such as building hot bending glass are little in batches, and specification is various, the glass of an a kind of specification of order will weld a mold; Hot bending glasswork mould packing phenomenon is caused in the capital, and material, artificial waste are greatly.
Summary of the invention
Primary and foremost purpose of the present invention is a kind of glass bending furnace to be provided, to utilize this bending furnace to prepare the method for colored glaze tempering hot bending glass and the colored glaze tempering hot bending glass of preparation to the problem that above-mentioned prior art exists.Utilize the crooked radian of the colored glaze tempering hot bending glass of glass bending furnace preparation of the present invention to adhere to specification fully, and the decorative effect of colored glaze is obvious, the curved arc radian of hot bending glass is small and exquisite, and the curved arc radius is little; The glaze never drop-off, color and luster and brilliance make it new, and the glaze layer is anticorrosive, and is antimycotic; Anti-mildew becomes, Ginkgo Biloba Leaf Extract, and acid-fast alkali-proof is heat-resisting; Not aging, waterproof does not more receive the influence of temperature and Changes in weather.
For realizing the object of the invention, one aspect of the present invention provides a kind of glass bending furnace, and this bending furnace comprises:
Body of heater with heat insulation function;
Movable base is positioned at bottom of furnace body, can move around in case shift-in with shift out in the body of heater;
Mould is arranged on the movable base, is used to settle the glass of treating that hot bending is handled;
First heating unit is arranged on the internal surface of body of heater;
Second heating unit is placed in the body of heater inner chamber, can be near the glass that hot bending is handled of treating that is placed on the mould.
Wherein, said second heating unit is portable process furnace silk.
Particularly; Said portable process furnace silk is placed on the expansion bracket; Expansion bracket is fixed on the inboard wall of furnace body; Said expansion bracket can be flexible so that driving portable process furnace silk moves up and down along the vertical direction of body of heater, regulate thus portable process furnace silk away from or near the glass of placing on the said mould.
Especially, regulate the distance that moves between the colored glazed glass of placing on process furnace silk and the hot bending glass article through the collapsing length of regulating expansion bracket.
Particularly, said first heating unit is a fixed process furnace silk, and it is fixed on the inner side and/or end face of body of heater.
Especially, also comprise the electric apparatus control apparatus of the outside that is arranged on body of heater, be connected, be used to regulate and control the collapsing length of intravital heating power of bending furnace stove and expansion bracket with intravital first heating unit of stove, second heating unit, expansion bracket.
Wherein, be placed with die holder on the movable base, be used for placing and fixing hot bending glass article.
Wherein, the sealing of cavity one end of said body of heater, the other end is established closing door to be opened/closed, is used for bending furnace airtight.
In addition, the top of said body of heater also offers viewing window, is used to observe the hot bending situation of body of heater inner glass; The outside of body of heater also is equipped with temperature indicator, is used to show the body of heater internal temperature, is beneficial to the temperature of observing in the bending furnace.
The present invention provides a kind of method of utilizing above-mentioned bending furnace to prepare colored glaze tempering hot bending glass on the other hand, comprises as follows step in sequence:
1) will treat that colored glaze tempering sheet glass that hot bending is handled is sent in the body of heater and with it is enclosed in the body of heater;
2) utilize first heating unit tempering sheet glass to be carried out in proper order the processing of preheating, intensification:
3) utilize second heating unit tempering sheet glass to be incubated the processing of applying mould;
4) heating power that cuts off second heating unit and reduce by first heating unit is gradually handled with the typing of lowering the temperature.
Wherein, step 2) thermal pretreatment does described in, connects first heating unit, makes the temperature in the bending furnace slowly rise to 250 ℃; Said hyperthermic treatment does, improves the heating power of first heating unit gradually, makes the temperature in the bending furnace rise to 600 ℃; The applying of insulation described in step 3) mould is treated to, and makes second heating unit near treating the tempering sheet glass that hot bending is handled and making the energising of second heating unit, carries out boosting, makes to rise to 630 ℃ in the bending furnace, and toughened glass and mould are fitted fully.
Particularly, the temperature rise rate of said thermal pretreatment is 5.5-7.5 ℃/min; The temperature rise rate of said hyperthermic treatment is preferably 4.5-7 ℃/min; The temperature rise rate that said insulation applying mould is handled is preferably 1-1.2 ℃/min.
Especially, the temperature rise rate of said thermal pretreatment is preferably 5-8.5 ℃/min; The temperature rise rate of said hyperthermic treatment is 4.5-9 ℃/min; The temperature rise rate that said insulation applying mould is handled is 1-5 ℃/min.
Particularly, make the expansion bracket elongation in the bending furnace through electric apparatus control apparatus, the distance between process furnace silk and colored glazed glass is moved in control, opens the power supply that moves the process furnace silk simultaneously and carries out described boosting, carries out described insulation applying mould and handles.
Especially, the distance that moves process furnace silk and hot bending colored glazed glass curved arc position is 1.0-5.0cm, is preferably 1.5-4.0cm; The heating power of said mobile process furnace silk is 2000-4000 watt.
Wherein, the typing of the cooling described in the step 4) is handled and is comprised as follows step in sequence:
4-1) make the interior temperature of stove slowly be reduced to 450 ℃ with the rate of temperature fall of 4.5-7.5 ℃/min;
4-2) make the interior temperature of stove be reduced to 300 ℃ with the speed of 2.5-4.0 ℃/min;
4-3) make temperature in the stove slowly reduce speed with 1.0-1.5 ℃/min to 100-120 ℃; And
Make the temperature in the stove be reduced to room temperature.
Particularly, the thickness of described tempering sheet glass is 5-15cm.
Wherein, prepare the said colored glaze tempering sheet glass of treating that hot bending is handled according to following steps:
At first, specification, the size according to hot bending glass to be processed prepares printing screen plate;
Then, prepare colored glaze printing ink according to specification, the pattern color of hot bending glass to be processed;
Then, sheet glass and printing screen plate are placed on the screen process press, the colored glaze printing ink that injects preparation carries out the glazing printing, treats the colored glaze ink setting of the surface of plate glass after the glazing;
At last, send into the tempering that carries out glass in the annealing furnace and handle, make colored glaze tempering sheet glass.
The present invention provides a kind of colored glaze tempering hot bending glass that is prepared from according to the method described above on the other hand.
Wherein, the thickness of the hot bending glass of preparation is 5-15cm; The radius of hot bending glass curved arc is 10-90mm, is preferably 20-90mm, further is preferably 45-90mm.
The colored glaze tempering hot bending glass of the present invention's preparation has following advantage:
1, mobile process furnace silk is added in the bending part of the glass in bending furnace in the hot bending treating processes of the dull and stereotyped toughened glass of colored glaze of the present invention; To the bending part of glass is that the curved arc of hot bending glass partly carries out local boosting; Curved arc radius≤the 90mm of the hot bending glass bending part of producing, the mould of fitting fully pastes mould and puts in place; Do not reach standard, the installation requirement of compound hot bending glass.
2, the curved arc radius of the colored glaze tempering hot bending glass of the inventive method production is little; Curved arc radius deviation≤5mm; Reach≤1mm, overcome that whole heating process method makes hot bending glass curved arc position heat inhomogeneous in the existing hot bending glass preparation process, the mould of can't fitting fully; And plate part does not have the glass of curved arc part because heat is too high, and the defective of bending or wave appears in glass.
3, in the hot bending treating processes of the present invention in the cooling typing treatment step temperature descend slowly; The mode that adopts rate of temperature fall to reduce is gradually stage by stage lowered the temperature; Rate of temperature fall is little; The cooling typing treatment time is long, has significantly reduced the unrelieved stress in the colored glaze tempering hot bending glass, effectively avoids heat to burst.
4, the present invention adopts when letting dull and stereotyped colored glaze toughened glass be warming up near softening temperature, and distortion or employing mechanism bend and be out of shape under the self gravitation effect, by the mold shape moulding of making in advance.It is consistent with the heat absorption rate of glass that colored glaze toughened glass of the present invention carries out in the hot bending treating processes glaze, is heated evenly, avoided the heat of glass to burst.
5, the present invention uses dull and stereotyped colored glaze toughened glass as the hot bending glass substrate, handles through hot bending and is processed into colored glaze tempering hot bending glass, for hot bending glass has increased the decoration effect; And glaze layer no color differnece; The physical and chemical performance of glaze layer is the same with colored glaze toughened glass, has possessed characteristics such as acidproof, alkaline-resisting, wear-resisting, aging, nondiscoloration, does not more receive the influence of temperature and Changes in weather; Have good erosion resistance, various soda acids are possessed erosion resistance.
6, utilize the colored glaze tempering hot bending glass of bending furnace preparation of the present invention can realize multiple hot bendings processing such as single bending, compound bending, continuous bending; Make the shape variation of hot bending glass, it is incomplete to have overcome existing hot bending glass subsides mould, and the applying mould is not in place; The hot bending glass of preparation can only have a curved arc; And the radius of curved arc is greater than the defective of 90mm, efficiently solve the hot bending toughened glass of producing curved arc radius≤90mm the time, the hot bending glassy product pastes mould defective not in place.
7, the present invention prepares the colored glaze tempering hot bending glass of various curved arc shapes according to user's requirement, is widely used in that sunshade is arranged, decorates the inside and outside portion of the building that requires, like daylighting top, sightseeing elevator, arch corridor, sign direction board etc.; Family expenses colored glaze tempering hot bending glass can be made glass furniture, glass bathroom, show case, glass etc.
8, the radius of the corner curved arc of the colored glaze tempering hot bending glass of the present invention's preparation is little, and curved arc is small and exquisite, mellow and full, attractive in appearance, and physicochemical property is stable; Bright-colored; Personalized choice is big, is building decoration, the material of construction that indoor decoration is indispensable; Can be used as the artwork beautify life again, market outlook are wide.
Description of drawings
Fig. 1 is the preparation flow synoptic diagram of colored glaze tempering hot bending glass of the present invention;
Fig. 2 is the schematic perspective view of bending furnace among the present invention;
Fig. 3 is a bending furnace sectional view of the present invention;
Fig. 4 is that existing curved arc radius is the hot bending glass synoptic diagram of 100mm;
Fig. 5 is that the curved arc radius (R) of the embodiment of the invention 1 preparation is the colored glaze tempering hot bending glass synoptic diagram of 60mm;
Fig. 6 is that the curved arc radius (R) of the embodiment of the invention 3 preparations is the colored glaze tempering hot bending glass synoptic diagram of 45mm.
Description of reference numerals
1. body of heater; 2. movable base; 3. electric heater unit; 4. electric apparatus control apparatus; 5. temperature indicator; 6. viewing window; 7. first heating unit; 71. fixed heated stove silk; 8. second heating unit; 81. move the process furnace silk; 9. expansion bracket; 10. mould; 11. colored glaze tempering hot bending glass; 12. closing door; 13. die holder.
Embodiment
Embodiment 1 preparation thickness is 8cm, and curved arc radius corresponding R is the colored glaze tempering hot bending glass of 60mm
One, produces the preparatory stage
1, makes half tone
A: diagram specification or sample according to user's sample to be processed carry out the CAD drawing, then print the pattern of being drawn with template, then the pattern of making are carried out cutting, piece together by the finished product dimensional requirement and on transparent film, process film sheet;
B: the specification according to processing diagram or sample requirement carries out cutting of silk-screen printing screen cloth; And with the edge of screen cloth and frame fixation together with clamping plate; Then framework is tightened on the net machine that stretches tight (Leqing, the Zhejiang city pneumatic Science and Technology Ltd. of Suntory) with the printing screen cloth and evened up, then with the clamping plate gap sealing of multi-purpose adhesive screen cloth and framework;
C: after treating that multi-purpose adhesive is done, evenly coat the photoresists that thickness is 0.2mm, adopt blower that photoresists are dried then, make prefabricated half tone screen cloth two-sided;
F: the film sheet of steps A preparation is placed on the platform of printer (Taixing City's Goebel plate making machinery ltd produces), then prefabricated half tone is placed on the film sheet, cover the printing down lid; Turning on the ultraviolet exposure lamp carried out exposure-processed 10-15 minute; Take out the half tone after the exposure-processed then, use flushing with clean water, till the clear patterns on the half tone; At last half tone is dried, subsequent use.
2, preparation printing ink.
According to working diagram or sample pattern color conditioning inorganic high-temp colored glaze printing ink, wherein, printing ink mainly is made up of colorant, frit, finish auxiliary agent, and colorant is a MOX, covers glass surface behind the printing sintering, has brought into play the color development function of colored glaze; Frit is a glassy substances, the colorant that bonds behind the sintering, produces peculiar gloss, and the adjustment glazed colour layer coefficient of expansion is complementary different colours glazed colour layer and glass substrate thermal expansivity, avoids phenomenons such as glazed colour layer ftractures, comes off; Finish is used for regulating the sliminess of printing ink, makes printing ink be applicable to different typography modes; The auxiliary agent that often uses has slimicide, release agent, additive, remove light dose, antifriction liniment, end and do agent, siccative, light wet goods, and viscosity, surface tension, flowability and the rate of drying etc. of printing ink are comprehensively adjusted.
The optical index of the colored glaze printing ink of allotment (like wavelength, L*a*b and the Yxy color value of main color, spectrum induction curve, whiteness, gloss, density etc.) is consistent with working diagram or sample pattern color; The rheology index of printing ink (like plasticity, relative viscosity, thixotropy index, YV, levels of adhesion, thermal viscosity stability etc.), the index (like curing speed, energy scale etc.) of solidifying, physical attribute (like abrasive property, tackiness, wear resistance, flexible, surface tension, curing critical surface tension etc.) with treat that the characteristic of the glass of tempering adapts.
3, glass pre-treatment
With pending thickness is that the former sheet glass of 8cm carries out cutting process, and the glass size deviation control after the cutting is at ± 0.5mm.
Then, with edging around the glass after the cutting;
Then, use the tap water of clean filtering to carry out clean to the glass behind the edging;
At last, the glass powder and the polishing powder of glass surface rinsed out, oven dry moisture content, subsequent use, wherein:
Cutting facility adopts INTERMAC full-automatic computer cutting machine (Italian InterMAC company produce);
Edging adopts edge polisher (Shuande, Fushan City, Guangdong Province usury prestige machinery ltd is);
Clean adopts cleaning machine (Foochow rich wound glass machinery ltd produces).
4, make mould
Design and Machining figure according to hot bending glass prepares stainless steel mould; Shape, size, curved arc state, the radian of curved arc and the hot bending glass finished product of design of mould are consistent; Be that mould 10 is consistent with shape, size, curved arc state, curved arc radian and the curved arc radius R of the hot bending glassy product of preparation; Wherein the radius R of the curved arc of mould 10 is 60mm, and the number of curved arc is 2.
The mould of the stainless steel of the present invention preparation is made according to the Design and Machining figure of hot bending glass to be processed fully, and the curved arc of mould can be arbitrary size, particularly the radius of the curved arc of the mould of the stainless steel of the present invention's preparation 10～90mm; Stainless steel mould of the present invention in addition can be processed multiple shapes such as single bending, compound bending, continuous bending.
Two, glazing printing
The sheet glass of treating glazing and the half tone of producing the preparatory stage preparation are placed on the screen process press (attaining emerging screen printing machine (Shenzhen) ltd); Sheet glass is positioned under the half tone; Adjust half tone and treat that the height between glazing glass is 8-12mm; Lock half tone, and half tone pattern and glass are placed on consistent position, and glass and half tone are fixed according to the size and the pattern magnitude of sheet glass; Then inject the printing ink of preparation, carry out the glazing printing, ink thickness is about 0.1um; In dryer (attaining emerging screen printing machine (Shenzhen) ltd produces), under 190～200 ℃ temperature, dry 3min then, make preparatory tempering colored glaze sheet glass.
Embodiment of the invention glazing printing can also adopt roller printing, spraying, Freehandhand-drawing mode to carry out glazing except adopting silk screen printing.
Three, tempering is handled
Use air gun with the glazed colour layer purge of preparatory tempering colored glaze surface of plate glass clean after, with the glazed layer of glass up, be placed horizontally in the annealing furnace (Guangdong Suo Aosi glass technology ltd); Power-on; Heat,, glass is come out of the stove 650～720 ℃ of sintering temperature 100-500 seconds; About rapid quenching to 250 under the effect of high pressure cooling air ℃; Through cooling wind pressure glass temperature is reduced to about 60 ℃ of the temperature (concrete tempering parameter sees attached list) that manual work can be moved then, promptly get dull and stereotyped colored glaze toughened glass, the Ca of the oxidation film layer of muffle painting and glass surface
2+, Na
+After chemical reaction, crosslinked combining fuses into one muffle painting with glass under high temperature action; Surface at glass forms the very high colored glaze of one deck hardness; Make colored glaze toughened glass, the colored glaze of glass surface does not come off, does not have aging, will never fade, and intensity is high.
Four, hot bending is handled
Like Fig. 2, shown in 3; Bending furnace includes the body of heater with heat insulation function 1 that lagging material is formed; Be arranged on the movable base 2 of the placement mould 10 of body of heater 1 bottom; The inside of body of heater 1 is equipped with the electric heater unit 3 that is used for heat temperature raising, and electric heater unit 3 comprises first heating unit 7 and second heating unit 8, and the front upper of body of heater 1 is connected with the electric apparatus control apparatus 4 that is used to regulate and control first, second electric heater unit power.
The bottom in the front of body of heater 1 is a closing door 12, and top offers viewing window 6, is used to observe the hot bending situation of glass in the body of heater; The front upper of body of heater 1 also is equipped with the temperature indicator 5 that shows the body of heater internal temperature, and the height of the furnace body temperature that shows according to temperature indicator 5 is regulated electric apparatus control apparatus 4 and realized regulating the control of the temperature in the hot bending treating processes in the bending furnaces.
First heating unit 7 is a fixed heated stove silk 71; Second heating unit 8 is portable process furnace silk 81, and wherein, fixed heated stove silk 71 is fixedly mounted on bending furnace inwall side and end face; Moving process furnace silk 81 is fixedly mounted on the expansion bracket 9; Be fixed in the top of bending furnace 1 inwall along the expansion bracket 9 of the body of heater 1 inner longitudinal extension of bending furnace, it is flexible up and down, so that move up and down with the mobile process furnace silk 81 of placed horizontally; According to the height of the altitude mixture control expansion bracket 9 of mould, make the curved arc height and the radian that adapt to mould.
The hot bending treating processes is carried out according to following steps:
At first will be positioned on the die holder 13 on the movable base 2 according to the stainless steel mould 10 of the radius preparation of shape, size, curved arc radian and the curved arc of colored glaze hot bending glassy product; And fixing, will treat that then the colored glaze toughened glass of hot bending places on the mould 10, making colored glaze toughened glass and mould is that four limits are parallel; And be fixed on the mould; Then mould 10 and colored glazed glass are sent in the bending furnace, are closed closing door 12 so that airtight bending furnace is handled with preparation colored glaze hot bending glass as follows:
1, colored glaze toughened glass thermal pretreatment
Through the fixed heated stove silk 71 that electric apparatus control apparatus 4 is opened in the bending furnace, the interior temperature of bending furnace is heated up with the speed of 7.5 ℃/min, reach 250 ℃.
2, hyperthermic treatment
After treating that the interior temperature of bending furnace is increased to 250 ℃, regulate the heating power that electric apparatus control apparatus 4 strengthens stove internal fixing process furnace silks 71, make the interior temperature of stove continue to be increased to 600 ℃ with the speed of 7.0 ℃/min.
In the hyperthermic treatment process, colored glaze toughened glass is heated, and is softening gradually, under action of gravity, forms the shape of mould gradually according to the shape of the mould of preparation.
3, the mould processing is pasted in insulation
When treating that the interior temperature of bending furnace reaches 600 ℃; With expansion bracket 9 to extending below; Make mobile process furnace silk 81 on the expansion bracket 9 near the curved arc place of hot bending glass; Mobile process furnace silk 81 is 4cm apart from the distance at the curved arc place of glass, regulates the portable process furnace silk 8 that electric apparatus control apparatus 4 is opened corresponding to the curved arc place of hot bending glass simultaneously, and regulating the heating power that moves process furnace silk 8 is 2000-4000 watt; Carry out boosting; Make the interior temperature of bending furnace rise to 630 ℃,, under action of gravity, fit fully with mould until remollescent colored glaze toughened glass through the applying situation of colored glaze toughened glass and mould in the 6 observation bodies of heater of the viewing window on the bending furnace body of heater 1 with the speed of 1.2 ℃/min.
Insulation subsides mould receives thermal softening after handling and being meant that glass reaches softening temperature, is consistent at the effect lower-glass of gravity and the curved arc of mould; But the applying degree of glass and mould receives glass material, shape of product, curved arc degree, temperature height and the influence of temperature control time, in the insulation applying mould treatment step of the present invention, is the mobile process furnace silk 81 local boosting processing of bending part placement of corresponding hot bending glass in the curved arc position near mould therefore; Make glass after bending part is softening; Easier and mould is fitted, and fits fully with mould, and the applying deviation of glass behind the hot bending and mould is less than 5mm; Especially at the curved arc radius of hot bending glass to be prepared less than 90mm; During radian＜90 °, it is inhomogeneous to have overcome in the whole heat-processed hot bending glass curved arc position heat, the mould of can't fitting fully; And plate part does not have the glass of curved arc part because heat is too high, and the defective of bending or wave appears in glass.
4, the cooling typing is handled
1) fs is handled in the cooling typing
Through electric apparatus control apparatus 4, cut off and move process furnace silk 81, reduce the heating power of bending furnace internal fixing process furnace silk 7 simultaneously, make the temperature in the stove slowly be reduced to 450 ℃, wherein rate of temperature fall is 6.43 ℃/min;
2) fs is handled in the cooling typing
Continue to reduce the heating power of bending furnace internal fixing process furnace silk 7, make the temperature in the stove slowly be reduced to 300 ℃, wherein the rate of temperature fall of the subordinate phase of typing processing is 3.0 ℃/min;
3) phase III is handled in the cooling typing
Reduce the heating power of bending furnace internal fixing process furnace silk 7, make the temperature in the stove slowly be reduced to 100-120 ℃, wherein the rate of temperature fall of the phase III of typing processing is 1.13 ℃/min;
4) stage is handled in the cooling typing
Close bending furnace internal fixing process furnace silk 7, make temperature in the stove be reduced to room temperature (25 ℃) with the speed of 0.6 ℃/min after, open the hot bending fire door, take out colored glaze tempering hot bending glass (as shown in Figure 5).
Promote the capability and performance of the colored glaze tempering hot bending glass of standard JC/T 1006-2006 " glaze tempering and glaze half tempered glass " Performance Detection present embodiment preparation according to national building material industry, detected result is as shown in table 1, conformance with standard.
Except the radian radius corresponding R of the mould curved arc made is 90mm, the thickness of glass is 15cm; In the hot bending treating processes, the temperature rise rate of thermal pretreatment step is 5.63 ℃/min; The temperature rise rate of hyperthermic treatment step is 4.38 ℃/min; The mobile process furnace silk 8 of insulation subsides mould treatment step is 1.5cm apart from the distance of curved arc; The rate of temperature fall of the fs of cooling typing treatment step is 4.5 ℃/min, and the rate of temperature fall of subordinate phase is 2.5 ℃/min, and the rate of temperature fall of phase III is 1.0 a ℃/min plant, and all the other are identical with embodiment 1, the colored glaze tempering hot bending glass that makes.
Promote the capability and performance of the colored glaze tempering hot bending glass of standard JC/T 1006-2006 " glaze tempering and glaze half tempered glass " Performance Detection present embodiment preparation according to national building material industry, detected result is as shown in table 1, conformance with standard.
Except the mould curved arc radius corresponding R that makes is 45mm, the thickness of glass is 12cm; In the hot bending treating processes, the temperature rise rate of thermal pretreatment step is 7.03 ℃/min; The temperature rise rate of hyperthermic treatment step is 5.38 ℃/min; The mobile process furnace silk 8 of insulation subsides mould treatment step is 2.0cm apart from the distance of curved arc; The rate of temperature fall of the fs of cooling typing treatment step is 6.0 ℃/min; The rate of temperature fall of subordinate phase is 2.5 ℃/min; The rate of temperature fall of phase III is 1.0 ℃/min; The rate of temperature fall of stage is outside the 0.53 ℃/min, and all the other are identical with embodiment 1, the colored glaze tempering hot bending glass (as shown in Figure 6) that makes.
Promote the capability and performance of the colored glaze tempering hot bending glass of standard JC/T 1006-2006 " glaze tempering and glaze half tempered glass " Performance Detection present embodiment preparation according to national building material industry, detected result is as shown in table 1, conformance with standard.
The capability and performance detected result of table 1 colored glaze tempering hot bending glass
Claims (10)
1. glass bending furnace comprises:
Body of heater (1) with heat insulation function:
Movable base (2) is positioned at bottom of furnace body, can move around in case shift-in with shift out in the body of heater (1);
Mould (10) is arranged on the movable base (2), is used to settle the glass of treating that hot bending is handled;
First heating unit (7) is arranged on the internal surface of body of heater (1), it is characterized in that also comprising:
Second heating unit (8) is placed in body of heater (1) inner chamber, can be near the glass that hot bending is handled of treating that is placed on the mould.
2. glass bending furnace as claimed in claim 1 is characterized in that: said second heating unit (8) is a portable process furnace silk (81).
3. glass bending furnace as claimed in claim 2; It is characterized in that: said portable process furnace silk (81) is placed on the expansion bracket (9); Expansion bracket (9) is fixed on body of heater (1) inwall; Said expansion bracket (9) can be flexible so that driving portable process furnace silk moves up and down along the vertical direction of body of heater, regulate thus portable process furnace silk (81) away from or near the glass of placing on the said mould.
4. glass bending furnace as claimed in claim 3 is characterized in that: said first heating unit (7) is a fixed process furnace silk (71), and it is fixed on the inner side and/or end face of body of heater (1).
5. utilization such as the arbitrary said glass bending furnace of claim 1-4 prepare the method for tempering hot bending glass, it is characterized in that carrying out successively following steps:
1) will treat that tempering sheet glass that hot bending is handled is sent in the body of heater and with it is enclosed in the body of heater;
2) utilize first heating unit tempering sheet glass to be carried out in proper order the processing of preheating, intensification:
3) utilize second heating unit tempering sheet glass to be incubated the processing of applying mould;
4) heating power that cuts off second heating unit and reduce by first heating unit is gradually handled with the typing of lowering the temperature.
6. method as claimed in claim 5 is characterized in that:
Said step 2) in, said thermal pretreatment does, connects first heating unit (7), makes the temperature in the bending furnace slowly rise to 250 ℃; Said hyperthermic treatment does, improves the heating power of first heating unit gradually, makes the temperature in the bending furnace rise to 600 ℃.
7. like claim 5 or 6 described methods; It is characterized in that: in the said step 3); Said insulation applying mould is treated to, and makes second heating unit (8) near treating the tempering sheet glass that hot bending is handled and making second heating unit (8) energising, carries out boosting; Make to rise to 630 ℃ in the bending furnace, toughened glass and mould are fitted fully.
8. method as claimed in claim 6 is characterized in that: the temperature rise rate of said thermal pretreatment is 5-8.5 ℃/min; The temperature rise rate of said hyperthermic treatment is 4.5-9 ℃/min.
9. method as claimed in claim 7 is characterized in that: the temperature rise rate that said insulation applying mould is handled is 1-5 ℃/min.
10. method as claimed in claim 5 is characterized in that: described cooling typing is handled and is comprised as follows step in sequence:
Make the interior temperature of stove slowly be reduced to 450 ℃ with the rate of temperature fall of 4.5-7.5 ℃/min;
Make the interior temperature of stove be reduced to 300 ℃ with the speed of 2.5-4.0 ℃/min;
Make temperature in the stove slowly reduce speed with 1.0-1.5 ℃/min to 100-120 ℃; And
Make the temperature in the stove be reduced to room temperature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102552465A CN102372423B (en) | 2010-08-16 | 2010-08-16 | Hot bending furnace for colored glazing glass, method for preparing colored glazing toughened hot-bent glass and colored glazing toughened hot-bent glass |
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| CN2010102552465A CN102372423B (en) | 2010-08-16 | 2010-08-16 | Hot bending furnace for colored glazing glass, method for preparing colored glazing toughened hot-bent glass and colored glazing toughened hot-bent glass |
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| CN102372423A true CN102372423A (en) | 2012-03-14 |
| CN102372423B CN102372423B (en) | 2013-12-04 |
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| CN105525487A (en) * | 2014-09-30 | 2016-04-27 | 绥中明晖工业技术有限公司 | Bending, tempering and printing method for washing machine operation display screens |
| CN107721146A (en) * | 2017-09-26 | 2018-02-23 | 无锡康柏斯机械科技有限公司 | Glass tempering furnace |
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| CN108623181A (en) * | 2017-03-15 | 2018-10-09 | 道登电子材料股份有限公司 | Have both the glass-making processes of high temperature resistant and quick print molding high quality |
| CN107721146A (en) * | 2017-09-26 | 2018-02-23 | 无锡康柏斯机械科技有限公司 | Glass tempering furnace |
| CN108334132A (en) * | 2018-02-05 | 2018-07-27 | 镇海石化建安工程有限公司 | A kind of multiunit automatic temp controller and method |
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| CN108640488A (en) * | 2018-07-25 | 2018-10-12 | 蚌埠淮畔精密机械有限公司 | A kind of recurvation formula glass bending furnace |
| CN109592887A (en) * | 2018-12-12 | 2019-04-09 | 惠州市彩玉微晶新材有限公司 | A kind of crystallite slabstone hot bending process and special-shaped bending furnace |
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