CN102372423B - 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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- CN102372423B CN102372423B CN2010102552465A CN201010255246A CN102372423B CN 102372423 B CN102372423 B CN 102372423B CN 2010102552465 A CN2010102552465 A CN 2010102552465A CN 201010255246 A CN201010255246 A CN 201010255246A CN 102372423 B CN102372423 B CN 102372423B
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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 manufacture method of heat-bending glass and products thereof, particularly the tempering heat-bending glass product of the manufacture method of a kind of colored glazed glass bending furnace, colored glaze tempering heat-bending glass and preparation thereof.
Background technology
Heat-bending glass is in order to meet the quality requirements of modern architecture, curved softening by the high-quality glass heats, in die for molding, then the bend glass of making through annealing.Pattern is attractive in appearance, and the lines flow smoothly.It has broken through the unicity of sheet glass, more versatile and flexible in use.Heat-bending glass is mainly used in the internal and external ornament, lighting roof, sightseeing elevator, arch corridor of building etc.Civilian heat-bending glass is mainly as glass furniture, glass aquarium, glass hand washing basin, show case, glass etc.
Heat-bending glass is in bending furnace, to allow the sheet glass secondary temperature elevation when approaching softening temperature, and distortion or adopt the physical construction distortion of bending under the self gravitation effect, by the shape moulding of the mould of making in advance.Along with the progress of industrial level and the raising day by day of living standards of the people, heat-bending glass is also more and more in the use of building, family expenses occasion.Yet, due to the special form of heat-bending glass, be subject to the restriction of hot bending glass preparation state of the art, people were when selecting heat-bending glass as finishing material in the past, can only select the heat-bending glass of single transparent, otherwise can only be on the heat-bending glass be shaped pad pasting and paint baking.There is not decorative effect in the heat-bending glass of single transparent; The heat-bending glass of pad pasting is to use glue that pattern is bonded on heat-bending glass, plays decoration function, but the heat-bending glass of pad pasting under the sun, the pattern sticked on heat-bending glass will soon fade, and bubbles, even comes off; The baking vanish glass back of the body paint glass that also cries in the field of business, to spray paint at the back side of heat-bending glass, paint nature airing postadhesion is at the back side of heat-bending glass, but the lacquer painting sticking power of spraying is less, lacquer painting easily comes off, the brilliance of baking vanish heat-bending glass and color and luster will be degenerated through the time of about 1 year, more can be subject to the impact of temperature and Changes in weather, in the easy variable color of moist environment, come off.
Colored glaze toughened glass is that the glass glaze is printed on to glass surface by special process, and then drying, tempering are processed and formed.The permanent sintering of colored glaze, on glass surface, has the advantages such as antiacid alkali, corrosion-resistant, will never fade, safety is high-strength, and the characteristics such as reflecting and does not have an X-rayed are arranged.
Although China heat-bending glass enterprise has more than 500, glass bending furnace has 2000 left and right, mainly for the production of heat-bending glass for building.In recent years, along with the expansion in construction and decoration market, furniture decoration also increases greatly with heat-bending glass, and rise throughout the country in succession with glass bending furnace and glass heat smelting furnace in hand basin bending furnace, aquarium.It is extremely flourishing that heat-bending glass market seems, but, also do not produce on the market at present the technology of colored glaze tempering heat-bending glass, generally to adopt the heat-bending glass that do not print or pad pasting is realized heat-bending glass on heat-bending glass decorative effect, but, if single curved surface can adopt the curved steel process of colored glaze along the arc glassy product, make and there is single curved arc decorative effect glass; If hyperboloid, many curved surfaces or irregular arc can not adopt curved annealing furnace directly to process.
At present, the coarse pit of hot bending product appearance of the domestic most enterprises that can produce heat-bending glass is more, the crooked radian of heat-bending glass does not reach design requirements, anneal bad, cause heat-bending glass very easily to break, and be all to adopt colourless transparent glass or versicolor glass as substrate production, can't carry out high temperature colored glaze decoration, decorative effect is poor and have nothing in one.
But, prepare at present colored glaze tempering heat-bending glass and have following technical barrier:
1) aspect the hot bending heating, hot bending producer generally adopts whole type of heating now, this type of heating can only the little shallow arc of production angle, radius>90mm corresponding to this shallow arc, when producing the heat-bending glass product of bent arc radius≤90mm, there is laminating mould incomplete phenomena, it is the too shallow or curved excessive problem of radian of hot bending glass, bent arc radius and the curved arc radian deviation of the heat-bending glass of preparation are larger, poor with mould laminating degree, the heat-bending glass of preparation can't be installed, and does not reach design requirements.
2) at glass, carry out in the hot bending treating processes, the temperature control point usually adopted and treatment time are controlled curve and be: normal temperature is raised to 300 ℃ and approximately uses 30 minutes; 300 ℃ are raised to 500 ℃ and approximately use 25 minutes; 520 ℃ are raised to 580 ℃ and approximately use 20 minutes; 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 approximately use 30 minutes; 300 ℃ drop to normal temperature approximately 50 minutes, prepared in the heat-bending glass process by existing technique, and 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 now the modes such as silk screen printing, roller printing to realize, even available spraying or the glazing of Freehandhand-drawing mode, printing precision is not high, if using prior art directly to print then hot bending processes, 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 mold, these three kinds of forms of bar frame mould, but because the building heat-bending glass is little in batches, the reasons such as specification is various, the glass of an a kind of specification of order will weld a mold, heat-bending glass factory mould packing phenomenon is caused in capital, and material, artificial waste are greatly.
Summary of the invention
Primary and foremost purpose of the present invention is that the problem existed for above-mentioned prior art provides a kind of glass bending furnace, utilizes this bending furnace to prepare the method for colored glaze tempering heat-bending glass and the colored glaze tempering heat-bending glass of preparation.The crooked radian of the colored glaze tempering heat-bending glass that utilizes glass bending furnace of the present invention to prepare meets design requirements fully, and the decorative effect of colored glaze is obvious, and the curved arc radian of heat-bending glass is small and exquisite, bent arc radius is little, the glaze never drop-off, and color and luster and brilliance make it new, the glaze layer is anticorrosive, antimycotic, anti-mildew becomes, uvioresistant, acid-fast alkali-proof is heat-resisting, not aging, waterproof, more be not subject to the impact of temperature and Changes in weather.
For realizing purpose of the present 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, be positioned at bottom of furnace body, can move around so that shift-in and shifting out in body of heater;
Mould, be arranged on movable base, for arrangement, treats the glass that hot bending is processed;
First heater, be arranged on the internal surface of body of heater;
Secondary heating mechanism, be placed in the body of heater inner chamber, can approach the glass that hot bending is processed for the treatment of be placed on mould.
Wherein, described secondary heating mechanism is portable process furnace silk.
Particularly, described portable process furnace silk is placed on expansion bracket, expansion bracket is fixed on inboard wall of furnace body, described 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 described mould.
Especially, regulate the distance between the colored glazed glass of placing on mobile heating furnace silk and heat-bending glass mould by the collapsing length of regulating expansion bracket.
Particularly, described first heater is fixing 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 with first heater, secondary heating mechanism, expansion bracket in body of heater, for regulating and controlling heating power in the bending furnace body of heater and the collapsing length of expansion bracket.
Wherein, be placed with die holder on movable base, for placing and fixing hot bending glass mold.
Wherein, the cavity one end sealing of described body of heater, the other end is established closing door to be opened/closed, for bending furnace is airtight.
In addition, the top of described body of heater also offers viewing window, for observing the hot bending situation of body of heater inner glass; The outside of body of heater also is equipped with temperature indicator, for showing the body of heater internal temperature, is beneficial to the temperature of observing in bending furnace.
The present invention provides a kind of method of utilizing above-mentioned bending furnace to prepare colored glaze tempering heat-bending glass on the other hand, comprises as follows step in sequence:
1) the colored glaze tempering sheet glass that will treat the hot bending processing is sent in body of heater and it is enclosed in body of heater;
2) utilize first heater sequentially to carry out the processing of preheating, intensification to tempering sheet glass:
3) utilize secondary heating mechanism tempering sheet glass to be carried out to the processing of thermal insulation plaster mould;
4) cut off secondary heating mechanism and reduce gradually the heating power of first heater with the heat treatment of being lowered the temperature.
Wherein, step 2), thermal pretreatment is that the connection first heater, make the temperature rising to 250 ℃ in bending furnace; Described hyperthermic treatment is, improves gradually the heating power of first heater, makes the temperature in bending furnace rise to 600 ℃; Step 3) mould of thermal insulation plaster described in is treated to, and makes secondary heating mechanism near treating the tempering sheet glass that hot bending is processed and making the secondary heating mechanism energising, carries out boosting, makes in bending furnace to rise to 630 ℃, and toughened glass and mould laminating are fully.
Particularly, the temperature rise rate of described thermal pretreatment is 5.5-7.5 ℃/min; The temperature rise rate of described hyperthermic treatment is preferably 4.5-7 ℃/min; The temperature rise rate that described thermal insulation plaster mould is processed is preferably 1-1.2 ℃/min.
Especially, the temperature rise rate of described thermal pretreatment is preferably 5-8.5 ℃/min; The temperature rise rate of described hyperthermic treatment is 4.5-9 ℃/min; The temperature rise rate that described thermal insulation plaster mould is processed is 1-5 ℃/min.
Particularly, by electric apparatus control apparatus, make the expansion bracket elongation in bending furnace, control the distance between mobile heating furnace silk and colored glazed glass, the power supply of simultaneously opening the mobile heating furnace silk carries out described boosting, carries out described thermal insulation plaster mould and processes.
Especially, the distance at mobile heating 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 described mobile heating furnace silk is 2000-4000 watt.
Wherein, the cooling heat treatment step 4) comprises 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 Speed Reduction to 300 ℃ of the interior temperature of stove with 2.5-4.0 ℃/min;
4-3) make temperature in stove slowly reduce speed with 1.0-1.5 ℃/min to 100-120 ℃; And
Make the temperature in stove be reduced to room temperature.
Particularly, the thickness of described tempering sheet glass is 5-15cm.
Wherein, prepare in accordance with the following steps the described colored glaze tempering sheet glass for the treatment of that hot bending is processed:
At first, specification, the size according to heat-bending glass to be processed prepares printing screen plate;
Then, prepare colored glaze printing ink according to specification, the pattern color of heat-bending glass to be processed;
Then, sheet glass and printing screen plate are placed on screen process press, the colored glaze printing ink that injects preparation carries out the glazing printing, the colored glaze ink setting of the surface of plate glass after glazing;
Finally, send into the tempering that carries out glass in annealing furnace and process, make colored glaze tempering sheet glass.
The present invention provides a kind of colored glaze tempering heat-bending glass be prepared from according to the method described above on the other hand.
Wherein, the thickness of the heat-bending glass of preparation is 5-15cm; The radius of heat-bending glass curved arc is 10-90mm, is preferably 20-90mm, more preferably 45-90mm.
Colored glaze tempering heat-bending glass prepared by the present invention has following advantage:
1, in the hot bending treating processes of the dull and stereotyped toughened glass of colored glaze of the present invention, the mobile heating furnace silk is added in the bending part of the glass in bending furnace, the arc portion that is hot bending glass to the bending part of glass divides and carries out local boosting, bent arc radius≤the 90mm of the heat-bending glass bending part of producing, the mould of fitting fully, the subsides mould puts in place, do not reach standard, the installation requirement of compound heat-bending glass.
The bent arc radius of the colored glaze tempering heat-bending glass that 2, the inventive method is produced is little, bent arc radius deviation≤5mm, reach≤1mm, the whole heating process method in existing heat-bending glass preparation process that overcome makes heat-bending glass curved arc position heat inhomogeneous, the mould of can't fitting fully, and plate part does not have the glass of curved arc part too high due to heat, the defect of bending or wave appears in glass.
3, in hot bending treating processes of the present invention in cooling heat treatment step temperature descend slowly, the mode that adopts stage by stage rate of temperature fall to reduce is gradually lowered the temperature, rate of temperature fall is little, the cooling heat treatment time is long, significantly reduce the unrelieved stress in colored glaze tempering heat-bending glass, effectively avoided heat to burst.
4, the present invention adopts and allows dull and stereotyped colored glaze toughened glass be warming up to while approaching softening temperature, and under the self gravitation effect, distortion or employing mechanism bend and be out of shape, 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, and avoided the heat of glass to burst.
5, the present invention uses dull and stereotyped colored glaze toughened glass as the heat-bending glass substrate, become colored glaze tempering heat-bending glass through the hot bending processing again, for heat-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 the characteristics such as acidproof, alkaline-resisting, wear-resisting, not aging, nondiscoloration, more is not subject to the impact of temperature and Changes in weather, there is good erosion resistance, various soda acids are possessed to erosion resistance.
6, the colored glaze tempering heat-bending glass that utilizes bending furnace of the present invention to prepare can be realized the multiple hot bendings processing such as single bending, compound bending, continuous bending, make the shape variation of heat-bending glass, overcome existing heat-bending glass subsides mould incomplete, the laminating mould is not in place, the heat-bending glass of preparation can only have a curved arc, and the radius of curved arc is greater than the defect of 90mm, efficiently solve production bent arc radius≤90mm hot bending toughened glass the time, the heat-bending glass product pastes mould defect not in place.
7, the present invention prepares the colored glaze tempering heat-bending glass of various curved arc shapes according to user's requirement, and the inside and outside section of the building that be widely used in that sunshade is arranged, decoration requires, as lighting roof, sightseeing elevator, arch corridor, sign direction board etc.; Family expenses colored glaze tempering heat-bending glass can be made glass furniture, glass bathroom, show case, glass etc.
The radius of the corner curved arc of the colored glaze tempering heat-bending glass that 8, prepared by the present invention is little, curved arc is small and exquisite, mellow and full, attractive in appearance, and physicochemical property is stable, bright-colored, personalized choice is large, is building decoration, the material of construction that indoor decoration is indispensable, can be used as again the artwork beautify life, market outlook are wide.
The accompanying drawing explanation
Fig. 1 is the preparation flow schematic diagram of colored glaze tempering heat-bending glass of the present invention;
Fig. 2 is the schematic perspective view of bending furnace in the present invention;
Fig. 3 is bending furnace sectional view of the present invention;
Fig. 4 is the heat-bending glass schematic diagram that existing bent arc radius is 100mm;
Fig. 5 is that the bent arc radius (R) of the embodiment of the present invention 1 preparation is the colored glaze tempering heat-bending glass schematic diagram of 60mm;
Fig. 6 is that the bent arc radius (R) of the embodiment of the present invention 3 preparations is the colored glaze tempering heat-bending glass schematic 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 heater; 71. fixing process furnace silk; 8. secondary heating mechanism; 81. mobile heating furnace silk; 9. expansion bracket; 10. mould; 11. colored glaze tempering heat-bending glass; 12. closing door; 13. die holder.
Embodiment
It is 8cm that embodiment 1 prepares thickness, the colored glaze tempering heat-bending glass that the radius R that curved arc is corresponding is 60mm
One, produce the preparatory stage
1, make half tone
A: diagram specification or sample according to user's sample to be processed carry out the CAD drawing, then with template, print the pattern of drawing, and then the pattern of making are carried out to cutting, by the finished product dimensional requirement, piece together and make film on transparent film;
B: according to the specification of processing diagram or sample requirement, carry out cutting of silk-screen printing screen cloth, and with clamping plate, the edge of screen cloth and framework are fixed together, then framework and printing screen cloth are tightened and evened up on the net machine that stretches tight (the From Yueqing County, Zhejiang city pneumatic Science and Technology Ltd. of Suntory), then the clamping plate gap sealing by screen cloth and framework with multi-purpose adhesive;
C: after multi-purpose adhesive is dry, at the double-faced uniform of screen cloth, coat the photoresists that thickness is 0.2mm, then adopt blower that photoresists are dried, make prefabricated half tone;
F: film prepared by steps A is placed on the platform of printer (Taixing City's Goebel plate making machinery company limited produces), then prefabricated half tone is placed on film, cover the printing down lid, turn on the ultraviolet exposure lamp and carry out exposure-processed 10-15 minute, then take out the half tone after exposure-processed, rinse with clear water, until the clear patterns on half tone, finally half tone is dried, standby.
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 comprised of colorant, frit, finish auxiliary agent, and colorant is metal oxide, covers glass surface after printing-sintering, has brought into play the color development function of colored glaze; Frit is glassy substances, the colorant that bonds after sintering, produces peculiar gloss, adjusts the glazed colour layer coefficient of expansion, and different colours glazed colour layer and glass substrate thermal expansivity are complementary, and avoids the 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 often used has slimicide, release agent, additive, remove light dose, antifriction liniment, only dry agent, siccative, light wet goods, and viscosity, surface tension, mobility and the rate of drying etc. of printing ink are comprehensively adjusted.
The optical index of the colored glaze printing ink of allotment (as 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 Hemorheological Indexes of printing ink (as plasticity, relative viscosity, thixotropy index, yield value, levels of adhesion, thermal viscosity stability etc.), solidify index (as curing speed, energy scale etc.), physical attribute (as abrasive property, tackiness, wear resistance, flexible, surface tension, solidify critical surface tension etc.) and treat that the characteristic of the glass of tempering adapts.
3, glass pre-treatment
The former sheet glass that is 8cm by pending thickness carries out cutting process, and the glass size deviation control after cutting is at ± 0.5mm.
Then, by the surrounding edging of the glass after cutting;
Then, to the glass after edging, use the tap water of clean filtering to carry out clean;
Finally, the glass powder of glass surface and polishing powder are rinsed out, dry moisture content, standby, 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 company limited is);
Clean adopts cleaning machine (Foochow rich wound glass machinery company limited produces).
4, make mould
Design and Machining figure according to heat-bending glass prepares stainless steel mould, shape, size, curved arc state, the radian of curved arc and the heat-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 bent arc radius R of the heat-bending glass 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 stainless steel prepared by the present invention is made according to the Design and Machining figure of heat-bending glass to be processed fully, and the curved arc of mould can be the radius 10～90mm of curved arc of the mould of the stainless steel for preparing of arbitrary size, particularly the present invention; Stainless steel mould of the present invention can be made the various shapes such as single bending, compound bending, continuous bending in addition.
Two, glazing printing
By treating the sheet glass of glazing and producing half tone prepared by the preparatory stage, be placed on screen process press (attaining emerging screen printing machine (Shenzhen) company limited), sheet glass is positioned under half tone, adjust half tone and treat that the height between glazing glass is 8-12mm, the locking half tone, and according to size and the pattern magnitude of sheet glass, half tone pattern and glass are placed on to consistent position, and glass and half tone are fixed; Then inject the printing ink of preparation, carry out the glazing printing, ink thickness is the 0.1um left and right; Then in dryer (attaining emerging screen printing machine (Shenzhen) company limited produces), at the temperature of 190～200 ℃, dry 3min, make pre-tempering colored glaze sheet glass.
Embodiment of the present invention glazing printing, except adopting silk screen printing, can also adopt roller printing, spraying, Freehandhand-drawing mode to carry out glazing.
Three, tempering is processed
After using air gun that the glazed colour layer purge of pre-tempering colored glaze surface of plate glass is clean, by the glazed layer of glass upward, be placed horizontally in annealing furnace (Guangdong Suo Aosi glass technology company limited), power-on, heated, sintering 100-500 second at 650～720 ℃ of temperature, then make glass come out of the stove, rapid quenching to 250 ℃ left and right under the effect of high pressure cooling air, then by cooling wind pressure, glass temperature is down to the temperature 60 C left and right (concrete tempering parameter sees attached list) that manually can move, obtain 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 under high temperature action with glass, surface at glass forms the very high color glaze-surface of one deck hardness, make colored glaze toughened glass, the color glaze-surface of glass surface do not come off, without aging, will never fade, and intensity is high.
Four, hot bending is processed
As shown in Figure 2,3, bending furnace includes the body of heater with heat insulation function 1 that lagging material forms, 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 for heat temperature raising, electric heater unit 3 comprises first heater 7 and secondary heating mechanism 8, and the front upper of body of heater 1 is connected with the electric apparatus control apparatus 4 for regulating and controlling first, second electric heater unit power.
The bottom in the front of body of heater 1 is closing door 12, and top offers viewing window 6, for observing the hot bending situation of glass in 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 shown according to temperature indicator 5 is regulated electric apparatus control apparatus 4 and realized that in the adjusting bending furnace, the temperature in the hot bending treating processes is controlled.
First heater 7 is fixing process furnace silk 71, secondary heating mechanism 8 is portable process furnace silk 81, wherein, fixedly process furnace silk 71 is fixedly mounted on bending furnace inwall side and end face, mobile heating furnace silk 81 is fixedly mounted on expansion bracket 9, be fixed in the top of bending furnace 1 inwall along the inner expansion bracket 9 extending longitudinally of body of heater 1 of bending furnace, it is flexible up and down, so that the mobile heating furnace silk 81 with placed horizontally moves up and down, according to the height of the altitude mixture control expansion bracket 9 of mould, make to adapt to curved arc height and the radian of mould.
The hot bending treating processes is carried out according to following steps:
The stainless steel mould 10 that at first will prepare according to the radius of shape, size, curved arc radian and the curved arc of colored glaze heat-bending glass product is positioned on the die holder 13 on movable base 2, and fixing, the colored glaze toughened glass that then will treat hot bending is placed on mould 10, making colored glaze toughened glass and mould is that four limits are parallel, and be fixed on mould, then mould 10 and colored glazed glass are sent in bending furnace, are closed closing door 12 so that airtight bending furnace is handled as follows to prepare the colored glaze heat-bending glass:
1, colored glaze toughened glass thermal pretreatment
The fixedly process furnace silk 71 of opening in bending furnace by electric apparatus control apparatus 4, make the interior temperature of bending furnace heat up with the speed of 7.5 ℃/min, reaches 250 ℃.
2, hyperthermic treatment
After the temperature in bending furnace is increased to 250 ℃, regulate electric apparatus control apparatus 4 and strengthen the interior fixedly heating power of process furnace silk 71 of stove, 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, softening gradually, forms gradually the shape of mould under action of gravity according to the shape of the mould prepared.
3, the thermal insulation plaster mould is processed
When the temperature in bending furnace reaches 600 ℃, by expansion bracket 9 to downward-extension, make the curved arc place of the mobile heating furnace silk 81 close heat-bending glass on expansion bracket 9, mobile heating furnace silk 81 is 4cm apart from the distance at the curved arc place of glass, regulate the portable process furnace silk 8 that electric apparatus control apparatus 4 is opened corresponding to the curved arc place of heat-bending glass simultaneously, the heating power of regulating mobile heating furnace silk 8 is 2000-4000 watt, carry out boosting, make the interior temperature of bending furnace rise to 630 ℃ with the speed of 1.2 ℃/min, laminating situation by colored glaze toughened glass and mould in the viewing window 6 observation bodies of heater on bending furnace body of heater 1, until softening colored glaze toughened glass is fitted fully with mould under action of gravity.
After the thermal insulation plaster mould is processed and is referred to that glass reaches softening temperature, be subject to thermal softening, at the effect lower-glass of gravity and the curved arc of mould, be consistent, but the laminating degree of glass and mould is subject to glass material, shape of product, the curved arc degree, the temperature height, and the impact of temperature control time, therefore in thermal insulation plaster mould treatment step of the present invention, the local boosting of bending part holding movable process furnace silk 81 that in the curved arc position near mould is corresponding heat-bending glass is processed, make glass after bending part is softening, easier and mould is fitted, complete with the mould laminating, the laminating deviation of the glass after hot bending and mould is less than 5mm, especially the bent arc radius at heat-bending glass to be prepared is less than 90mm, during radian<90 °, overcome in whole heat-processed heat-bending glass curved arc position heat inhomogeneous, the mould of can't fitting fully, and plate part does not have the glass of curved arc part too high due to heat, the defect of bending or wave appears in glass.
4, cooling heat treatment
1) the cooling heat treatment first stage
By electric apparatus control apparatus 4, cut off mobile heating furnace silk 81, reduce the interior fixedly heating power of process furnace silk 7 of bending furnace simultaneously, make the temperature in stove slowly be reduced to 450 ℃, wherein rate of temperature fall is 6.43 ℃/min;
2) the cooling heat treatment first stage
Continue to reduce the interior fixedly heating power of process furnace silk 7 of bending furnace, make the temperature in stove slowly be reduced to 300 ℃, wherein the rate of temperature fall of the subordinate phase of heat treatment is 3.0 ℃/min;
3) the cooling heat treatment phase III
Reduce the interior fixedly heating power of process furnace silk 7 of bending furnace, make the temperature in stove slowly be reduced to 100-120 ℃, wherein the rate of temperature fall of the phase III of heat treatment is 1.13 ℃/min;
4) cooling heat treatment fourth stage
Close in bending furnace fixedly process furnace silk 7, make temperature in stove with the Speed Reduction of 0.6 ℃/min to room temperature (25 ℃), open the hot bending fire door, taking-up colored glaze tempering heat-bending glass (as shown in Figure 5).
The capability and performance of the colored glaze tempering heat-bending glass prepared according to national building material industry popularization standard JC/T 1006-2006 " glaze tempering and glaze semi-tempered glass " Performance Detection the present embodiment, detected result is as shown in table 1, conformance with standard.
It is 15cm that embodiment 2 prepares thickness, the colored glaze tempering heat-bending glass that the radius R that curved arc is corresponding is 90mm
Except the radius R corresponding to radian 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 heating furnace silk 8 of thermal insulation plaster mould treatment step is 1.5cm apart from the distance of curved arc; The rate of temperature fall of the first stage of cooling heat 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 ℃/min plant, and all the other are identical with embodiment 1, the colored glaze tempering heat-bending glass made.
The capability and performance of the colored glaze tempering heat-bending glass prepared according to national building material industry popularization standard JC/T 1006-2006 " glaze tempering and glaze semi-tempered glass " Performance Detection the present embodiment, detected result is as shown in table 1, conformance with standard.
It is 12cm that embodiment 3 prepares thickness, the colored glaze tempering heat-bending glass that the radius R that curved arc is corresponding is 45mm
Except radius R corresponding to mould curved arc made 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 heating furnace silk 8 of thermal insulation plaster mould treatment step is 2.0cm apart from the distance of curved arc; The rate of temperature fall of the first stage of cooling heat 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 fourth stage is outside 0.53 ℃/min, all the other are identical with embodiment 1, the colored glaze tempering heat-bending glass (as shown in Figure 6) made.
The capability and performance of the colored glaze tempering heat-bending glass prepared according to national building material industry popularization standard JC/T 1006-2006 " glaze tempering and glaze semi-tempered glass " Performance Detection the present embodiment, detected result is as shown in table 1, conformance with standard.
The capability and performance detected result of table 1 colored glaze tempering heat-bending glass
Claims (7)
1. a method of utilizing glass bending furnace to prepare colored glaze tempering heat-bending glass, wherein, described glass bending furnace comprises: the body of heater (1) with heat insulation function:
Movable base (2), be positioned at bottom of furnace body, can move around so that shift-in and shifting out in body of heater (1);
Mould (10), be arranged on movable base (2) upper, for arrangement, treats the glass that hot bending is processed;
First heater (7), be arranged on the internal surface of body of heater (1);
Secondary heating mechanism (8), be placed in body of heater (1) inner chamber, can approach the bending part for the treatment of the glass that hot bending is processed be placed on mould; It is characterized in that carrying out successively following steps:
1) the colored glaze tempering sheet glass that will treat the hot bending processing is sent in body of heater and it is enclosed in body of heater;
2) utilize first heater sequentially to carry out the processing of preheating, intensification to tempering sheet glass;
3) utilize secondary heating mechanism tempering sheet glass to be carried out to the processing of thermal insulation plaster mould, wherein, described thermal insulation plaster mould is treated to, make secondary heating mechanism (8) near the bending part for the treatment of the tempering sheet glass that hot bending is processed and make secondary heating mechanism (8) energising, carry out boosting, make in bending furnace to rise to 630 ℃, colored glaze toughened glass and mould laminating are fully;
4) cut off secondary heating mechanism and also reduce gradually the heating power of first heater, the cooling heat treatment stage by stage carried out in the following order:
A) make the interior temperature of stove slowly be reduced to 450 ℃ with the rate of temperature fall of 4.5-7.5 ℃/min;
B) make the Speed Reduction to 300 ℃ of the interior temperature of stove with 2.5-4.0 ℃/min;
C) make temperature in stove slowly reduce speed with 1.0-1.5 ℃/min to 100-120 ℃; And
D) make the temperature in stove be reduced to room temperature.
2. the method for claim 1 is characterized in that:
Described step 2), in, described thermal pretreatment is that connection first heater (7), make the temperature rising to 250 ℃ in bending furnace; Described hyperthermic treatment is, improves gradually the heating power of first heater, makes the temperature in bending furnace rise to 600 ℃.
3. method as claimed in claim 2, it is characterized in that: the temperature rise rate of described thermal pretreatment is 5-8.5 ℃/min; The temperature rise rate of described hyperthermic treatment is 4.5-9 ℃/min.
4. method as claimed in claim 1 or 2 is characterized in that: the temperature rise rate that described thermal insulation plaster mould is processed is 1-5 ℃/min.
5. method as claimed in claim 1 or 2, it is characterized in that: described secondary heating mechanism (8) is portable process furnace silk (81).
6. method as claimed in claim 5, it is characterized in that described portable process furnace silk (81) is placed on expansion bracket (9), expansion bracket (9) is fixed on body of heater (1) inwall, described 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 described mould.
7. method as claimed in claim 1 or 2, it is characterized in that: described first heater (7) is fixing process furnace silk (71), and it is fixed on the inner side and/or end face of body of heater (1).
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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 CN102372423A (en) | 2012-03-14 |
| CN102372423B true CN102372423B (en) | 2013-12-04 |
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