CN113698081A - Cooling structure for weakening stress spot generation of toughened glass and stress spot weakening method - Google Patents
Cooling structure for weakening stress spot generation of toughened glass and stress spot weakening method Download PDFInfo
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- CN113698081A CN113698081A CN202111115538.3A CN202111115538A CN113698081A CN 113698081 A CN113698081 A CN 113698081A CN 202111115538 A CN202111115538 A CN 202111115538A CN 113698081 A CN113698081 A CN 113698081A
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- cooling air
- cooling
- cyclone forming
- forming block
- weakening
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- 238000001816 cooling Methods 0.000 title claims abstract description 200
- 239000005341 toughened glass Substances 0.000 title claims abstract description 47
- 230000003313 weakening effect Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 26
- 230000000694 effects Effects 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 abstract description 14
- 238000000465 moulding Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
- C03B27/0404—Nozzles, blow heads, blowing units or their arrangements, specially adapted for flat or bent glass sheets
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B27/00—Tempering or quenching glass products
- C03B27/04—Tempering or quenching glass products using gas
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The invention relates to a cooling structure for weakening generation of stress spots of toughened glass and a stress spot weakening method, belonging to the technical field of toughened glass production. The transmission rollers between the transmission wheels are provided with lower cyclone molding blocks through mounting seats, the lower cooling air grids between the transmission rollers are provided with cooling air nozzles corresponding to the lower cyclone molding blocks, the upper cooling air grids are provided with upper cyclone molding blocks through mounting rods, and the upper cooling air grids are provided with air nozzles corresponding to the upper cyclone molding blocks. The cooling structure enables cooling air sprayed out of the cooling air nozzles to enter the arc-shaped groove from bottom to top and rise and diffuse in a rotational flow mode until the cooling air acts on the lower surface of the toughened glass to form a cooling area through the lower rotational air forming blocks between the transmission wheels and the lower cooling air grids between the transmission rollers and the cooling air nozzles arranged on the lower cooling air grid blocks, so that the purpose of cooling the toughened glass is achieved; has positive significance for improving the aesthetic feeling of the appearance of the glass and the integral aesthetic effect of buildings.
Description
Technical Field
The invention relates to a cooling structure for weakening generation of stress spots of toughened glass and a stress spot weakening method, belonging to the technical field of toughened glass production.
Background
Stress spots in tempered glass are optical effects caused by the occurrence of stripes of different brightness on the glass surface when observed at a specific observation angle and the occurrence of birefringence in the glass due to internal stress under polarized light or partially polarized light irradiation conditions. The stress spots are also called wind spots and are caused by uneven cooling of cooling wind in the production process of toughened glass. That is, the glass is heated and then cooled in the tempering process, and the compressive stress on the surface is large in the region where the cooling intensity is large and small in the region where the cooling intensity is small in the cooling process, and the uneven distribution of stress occurs on the surface of the glass due to uneven cooling. Factors causing uneven cooling mainly include unreasonable distribution of fan nozzles and uneven gap between the nozzles, so that wind pressure acting on the surface of the glass is unevenly distributed, particularly, contact parts between the driving wheel and the lower surface of the glass are blocked, cooling wind sprayed linearly contacts the surface of the glass to form turning back (jetting) under the blocking effect of end faces on two sides of the driving wheel, flow hardly reaches the contact parts, the contact parts of the cooling wind form a blank belt with the same thickness as the driving wheel, and then stress spots are generated, which is a main reason for generating the commonly recognized stress spots in the industry at present.
The stress spots are inherent characteristics of the tempered glass, do not affect the properties of the glass such as light transmittance, refractive index and the like, but adversely affect the appearance of the glass and also affect the overall aesthetic effect of the building. The current technical means has great difficulty in completely eliminating stress spots, so that the reduction of the formation of weakened stress spots is an urgent task to be solved.
Disclosure of Invention
The invention aims to: the cooling structure and the stress spot weakening method have the advantages that the structure is simple, the stress spot formation can be effectively reduced, and the stress spot generation of the tempered glass is weakened without influencing the attractive effect of the glass.
The technical scheme of the invention is as follows:
a cooling structure for weakening stress spots of toughened glass comprises a rack, transmission rollers, transmission wheels, an upper cooling air grid and a lower cooling air grid, wherein the transmission rollers are arranged on the rack at intervals, the transmission wheels are arranged on the transmission rollers at intervals, the lower cooling air grid is arranged on the rack between the transmission rollers, and the upper cooling air grid is arranged on the rack above the transmission rollers at intervals; the method is characterized in that: the driving roller between the driving wheels is provided with a lower cyclone molding block through a mounting seat, a lower cooling air grid between the driving rollers is provided with a cooling air nozzle corresponding to the lower cyclone molding block, the two sides of the lower cooling air grid are arranged in a staggered mode corresponding to the cooling air nozzle of the lower cyclone molding block, an upper cyclone molding block is arranged between the upper cooling air grids through a mounting rod, and air nozzles corresponding to the upper cyclone molding block are arranged on the two sides of the upper cooling air grid.
The lower cyclone forming block and the upper cyclone forming block are respectively in a conical cylinder shape, arc-shaped grooves are symmetrically formed in the end faces of two sides of the lower cyclone forming block and the end faces of two sides of the upper cyclone forming block, a bottom plate is arranged at the bottom of each arc-shaped groove of the lower cyclone forming block, and a top plate is arranged at the top of each arc-shaped groove of the upper cyclone forming block.
The included angle between the cooling air nozzle and the axial direction of the lower cyclone forming block is 10 degrees, so that cooling air sprayed out from the cooling air nozzle is cut into the arc-shaped groove; the horizontal included angle between the cooling air nozzle and the axial direction of the lower cyclone forming block is 15 degrees, so that cooling air sprayed out from the cooling air nozzle enters the arc-shaped groove from bottom to top.
And the cooling air entering the arc-shaped groove of the lower cyclone forming block rises in a cyclone manner and is diffused until the cooling air acts on the lower surface of the toughened glass.
The cooling air sprayed out of the air nozzle tangentially enters the arc-shaped groove of the upper cyclone forming block, descends in a cyclone manner and diffuses until the cooling air acts on the upper surface of the toughened glass.
The mounting seat is a U-shaped body, and the lower cyclone forming block is fixed at the top of the mounting seat through the bottom plate.
The circumference of the driving wheel is provided with a ring groove, and a fireproof rope is arranged in the ring groove so as to reduce the contact area between the driving wheel and the toughened glass.
And a cooling air port is arranged on the lower cooling air grid corresponding to the driving wheel so as to cool the driving wheel, avoid generating local heat effect and further ensure the cooling uniformity of cooling air sprayed out from the cooling air nozzle.
And a top cooling air port is arranged at the top of the lower cooling air grid between the cooling air nozzles.
The invention has the beneficial effects that:
the cooling structure for weakening the stress spots of the toughened glass is characterized in that the cooling structure is formed by a lower cyclone forming block between transmission wheels, a lower cooling air grid between transmission rollers and cooling air nozzles arranged on the lower cooling air grid block, so that in work, cooling air sprayed out from the cooling air nozzles enters an arc-shaped groove from bottom to top, rises in a rotational flow and is diffused until the cooling air acts on the lower surface of the toughened glass to form a cooling area, and thus the purpose of cooling the toughened glass is achieved; the cooling structure has the advantages of simple structure and good practicability, and has positive significance for improving the aesthetic appearance of glass and the overall aesthetic effect of buildings.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic structural view of a lower cyclone forming block of the present invention;
FIG. 4 is a schematic top view of the lower cyclone block of the present invention;
FIG. 5 is a schematic structural view of an upper cyclone molding block according to the present invention;
FIG. 6 is a schematic view of an axial included angle between a lower cyclone forming block and a cooling air nozzle;
FIG. 7 is a schematic view of a horizontal angle between a lower cyclone forming block and a cooling air nozzle;
FIG. 8 is a schematic view of the cooling wind direction of the lower cyclone block;
fig. 9 is a schematic view illustrating the principle of the cooling wind forming the swirling flow.
In the figure: 1. the device comprises a rack, 2, a transmission roller, 3, a transmission wheel, 4, an upper cooling air grid, 5, a lower cooling air grid, 6, a lower cyclone forming block, 7, a cooling air nozzle, 8, an upper cyclone forming block, 9, an air nozzle, 10, an arc-shaped groove, 11, a bottom plate, 12, a top plate, 13, toughened glass, 14, cyclone, 15 and a top cooling air port.
Detailed Description
The cooling structure that this weakening toughened glass stress spot produced includes frame 1, driving roller 2, drive wheel 3, goes up cooling air grid 4 and cooling air grid 5 down, and the interval is installed driving roller 2 in the frame 1, and the interval is installed drive wheel 3 on the driving roller 2, is equipped with cooling air grid 5 down in the frame 1 between the driving roller 2, and the interval is installed cooling air grid 4 in the frame 1 of driving roller 2 top. Lower cyclone forming blocks 6 are arranged on the driving rollers 2 between the driving wheels 3 in a spanning mode through mounting seats, cooling air nozzles 7 are arranged on the lower cooling air grids 5 between the driving rollers 2 corresponding to the lower cyclone forming blocks 6, upper cyclone forming blocks 8 are arranged between the upper cooling air grids 4 through mounting rods, and air nozzles 9 corresponding to the upper cyclone forming blocks 8 are arranged on the upper cooling air grids 4. The two sides of the lower cooling air grid 5 are arranged in a staggered manner corresponding to the cooling air nozzles 7 of the lower cyclone forming block 6. And a top cooling air port 15 is arranged at the top of the lower cooling air grid 5 between the cooling air nozzles 7.
The lower cyclone forming block 6 and the upper cyclone forming block 8 are respectively in a conical cylinder shape, arc-shaped grooves 10 are symmetrically formed in the end faces of two sides of the lower cyclone forming block 6 and the upper cyclone forming block 8, a bottom plate 11 is arranged at the bottom of the arc-shaped groove 10 of the lower cyclone forming block 6, and a top plate 12 is arranged at the top of the arc-shaped groove 10 of the upper cyclone forming block 8. The lower cyclone forming block 6 and the upper cyclone forming block 8 are arranged in an inverted manner (see the attached fig. 1-5). The mounting seat is a U-shaped body, and the lower cyclone forming block 6 is fixed at the top of the mounting seat through the bottom plate 11.
The upper cooling air grid 4 and the lower cooling air grid 5 of the cooling structure are both box-shaped air grids, and the upper cooling air grid 4 and the lower cooling air grid 5 are respectively communicated with an air source tank so as to ensure the consistency of air pressure in work. An annular groove is arranged on the circumference of the driving wheel 3, and a fireproof rope is arranged in the annular groove so as to reduce the contact area between the driving wheel 6 and the toughened glass 13 in work.
An included angle between the cooling air nozzle 7 and the axial direction (taking the frame as a reference) of the lower cyclone forming block 6 is 10 degrees, so that cooling air sprayed out of the cooling air nozzle 7 is cut into the arc-shaped groove 10; the horizontal included angle between the cooling air nozzle 7 and the axial direction of the lower cyclone forming block 6 is 15 degrees, so that the cooling air sprayed from the cooling air nozzle 7 enters the arc-shaped groove 10 from bottom to top in an inclined shape and spirally rises (see the attached figures 6-7).
When the cooling structure works, the toughened glass 13 moves forward under the action of the driving wheel 3, and cooling air flow sprayed out of the cooling air nozzle 7 tangentially enters the corresponding arc-shaped groove 10 of the lower cyclone forming block 6 in an inclined shape. Because the arc-shaped groove 10 is a cone corresponding to the lower cyclone forming block 6, and the bottom of the arc-shaped groove 10 is provided with the bottom plate 11, under the action of the bottom plate 11, cooling air entering the arc-shaped groove 10 forms an air cushion which rises in a cyclone shape and spreads until the air cushion acts on the lower surface of the toughened glass 13. In the process, because the cooling air nozzles 7 of the lower cooling air grid 5 at two sides corresponding to the lower cyclone forming block 6 are arranged in a staggered manner, and the cooling air flow sprayed by the cooling air nozzles 7 tangentially enters the arc-shaped grooves 10 of the corresponding lower cyclone forming block 6 in an inclined manner, after the cooling air flow sprayed by one of the cooling air nozzles 7 enters from one side of the arc-shaped groove 10 to form the rotational flow 14, part of the cooling air is swirled out from the other side of the arc-shaped groove 10 and is converged with the cooling air flow sprayed by the cooling air nozzle 7 at the other side of the cooling air grid 5, and enters the arc-shaped groove 10 of the lower cyclone forming block 6 at the other side of the lower cooling air grid 5 again to form the rotational flow which rises and spreads, so that the rotational flow is matched with the rotational flow, and a cooling area is formed on the lower surface of the toughened glass 13 (see fig. 8).
Because the lower cyclone forming blocks 6 are arranged on the driving rollers 2 among the driving wheels 3, cooling air flow sprayed out of the cooling air nozzles 7 at two sides of the lower cooling air grid 5 forms a cyclone 14 under the action of the arc-shaped grooves 10 corresponding to the lower cyclone forming blocks 6, and after a cooling area (cooling air mass) is formed on the lower surface of the toughened glass 13, the cooling cyclones (cooling air mass) of each formed cooling area are mutually converged and fused while being diffused, and are mutually compensated to form an integral cooling cyclone (cooling air mass) on the glass surface, so that the aim of uniformly cooling the cooling air is fulfilled. In the process, cooling air vertically sprayed out from a top cooling air port 15 arranged at the top of a lower cooling air grid 5 between cooling air nozzles 7 directly acts on the central part of a rotational flow 14, so that the rotational flow 14 is prevented from being hollow, and the rotational flow 14 is matched with diffusion, so that a cooling air mass rotates and diffuses, and the purposes of reducing cooling dead angles and further improving the cooling uniformity of the cooling air are achieved; meanwhile, the driving wheel 3 is cooled through a cooling air port arranged on the lower cooling air grid 5 corresponding to the driving wheel 3, so that the driving wheel 3 is prevented from generating a local heat effect due to heat conduction, the cooling uniformity of the cooling air is further ensured, and the cooling air after cooling is dissipated from the edge of the toughened glass 13 (see the attached drawing 9).
Similarly, the cooling air ejected from the air nozzle 9 tangentially enters the arc-shaped groove 10 of the upper cyclone forming block 8 in an inclined shape, descends in a rotational flow and diffuses until the cooling air acts on the upper surface of the toughened glass 13. The cooling wind sprayed from the tuyere 9 at the bottom of the upper cooling air grid 4 directly acts on the central part of the rotational flow 14, so as to further improve the cooling uniformity of the cooling wind.
The cooling structure is characterized in that lower cyclone forming blocks 6 between driving wheels, lower cooling air grids 5 between driving rollers 2 and cooling air nozzles 7 arranged on the lower cooling air grids 5 are used, and in operation, cooling air sprayed out of the cooling air nozzles 7 enters an arc-shaped groove 10 from bottom to top, rises in a cyclone manner and is diffused until the cooling air acts on the lower surface of toughened glass 13 to form a cooling area, so that the purpose of cooling the toughened glass 13 is achieved; the problem of current under the effect of blockking of the terminal surface of drive wheel 3 both sides, the cooling air current of straight line injection is difficult to reach from this, make it form a blank area that equals with drive wheel 3 thickness, and then produce the stress spot, this cooling structure is through the whirl effect that lower whirlwind shaping block 6 and upper whirlwind shaping block 8 formed on toughened glass 13's surface, the even purpose of heat dissipation has, compare traditional cooling air direct current refrigerated mode, the temperature difference of toughened glass 13 upper and lower surface has been reduced, thereby the surface stress difference about leading to toughened glass 5 has been reduced. Under the same condition, compared with the toughened glass 13 cooled and produced by the traditional mode, the toughened glass 13 cooled and produced by the cooling structure has the advantages that the generation of stress spots is obviously reduced, and the visual stress spots are obviously weakened. The cooling structure has the advantages of simple structure and good practicability, and has positive significance for improving the aesthetic feeling of the appearance of glass and the overall aesthetic effect of a building.
Claims (9)
1. A cooling structure for weakening stress spots of toughened glass comprises a rack (1), transmission rollers (2), transmission wheels (3), upper cooling air grids (4) and lower cooling air grids (5), wherein the transmission rollers (2) are installed on the rack (1) at intervals, the transmission wheels (3) are installed on the transmission rollers (2) at intervals, the lower cooling air grids (5) are installed on the rack (1) between the transmission rollers (2), and the upper cooling air grids (4) are installed on the rack (1) above the transmission rollers (2) at intervals; the method is characterized in that: lower cyclone forming blocks (6) are installed on the transmission rollers (2) between the transmission wheels (3) through mounting seats, lower cooling air grids (5) between the transmission rollers (2) are provided with cooling air nozzles (7) corresponding to the lower cyclone forming blocks (6), the two sides of the lower cooling air grids (5) are arranged in a staggered mode corresponding to the cooling air nozzles (7) of the lower cyclone forming blocks (6), upper cyclone forming blocks (8) are installed between the upper cooling air grids (4) through mounting rods, and air nozzles (9) corresponding to the upper cyclone forming blocks (8) are arranged on the two sides of the upper cooling air grids (4).
2. A cooling structure for weakening stress spot generation of tempered glass according to claim 1; the method is characterized in that: the lower cyclone forming block (6) and the upper cyclone forming block (8) are respectively in a conical cylinder shape, arc-shaped grooves (10) are symmetrically formed in the end faces of the two sides of the lower cyclone forming block (6) and the upper cyclone forming block (8), a bottom plate (11) is arranged at the bottom of each arc-shaped groove (10) of the lower cyclone forming block (6), and a top plate (12) is arranged at the top of each arc-shaped groove (10) of the upper cyclone forming block (8).
3. A cooling structure for weakening stress spot generation of tempered glass according to claim 1; the method is characterized in that: the included angle between the cooling air nozzle (7) and the axial direction of the lower cyclone forming block (6) is 10 degrees, so that cooling air sprayed out of the cooling air nozzle (7) is cut into the arc-shaped groove (10); the horizontal included angle between the cooling air nozzle (7) and the axial direction of the lower cyclone forming block (6) is 15 degrees, so that the cooling air sprayed out from the cooling air nozzle (7) enters the arc-shaped groove (10) from bottom to top.
4. A cooling structure for weakening the stress spot generation of tempered glass according to claim 3; the method is characterized in that: and the cooling air entering the arc-shaped groove (10) of the lower cyclone forming block (6) rises in a cyclone manner and is diffused until the cooling air acts on the lower surface of the toughened glass (13).
5. A cooling structure for weakening stress spot generation of tempered glass according to claim 1; the method is characterized in that: the air nozzle (9) and the upper cooling air grid (4) are arranged up and down, and cooling air sprayed from the air nozzle (9) obliquely and tangentially enters the arc-shaped groove (10) of the upper cyclone forming block to descend in a swirling flow and diffuse until the cooling air acts on the upper surface of the toughened glass.
6. A cooling structure for weakening stress spot generation of tempered glass according to claim 1; the method is characterized in that: the mounting seat is a U-shaped body, and the lower cyclone forming block (6) is fixed at the top of the mounting seat through the bottom plate (11).
7. A cooling structure for weakening stress spot generation of tempered glass according to claim 1; the method is characterized in that: the circumference of the driving wheel (3) is provided with a ring groove, and a fire-proof rope is arranged in the ring groove so as to reduce the contact area between the driving wheel (3) and the toughened glass (13).
8. A cooling structure for weakening stress spot generation of tempered glass according to claim 7; the method is characterized in that: the lower cooling air grid (5) corresponding to the driving wheel (3) is provided with a cooling air port to cool the driving wheel (3), so that a local heat effect is avoided, and the cooling uniformity of cooling air sprayed from the cooling air nozzle (7) is ensured.
9. A cooling structure for weakening stress spot generation of tempered glass according to claim 7; the method is characterized in that: and a top cooling air port (15) is arranged at the top of the lower cooling air grid (5) between the cooling air nozzles (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111115538.3A CN113698081B (en) | 2021-09-23 | 2021-09-23 | Cooling structure for weakening generation of stress spots of tempered glass and stress spot weakening method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111115538.3A CN113698081B (en) | 2021-09-23 | 2021-09-23 | Cooling structure for weakening generation of stress spots of tempered glass and stress spot weakening method |
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| Publication Number | Publication Date |
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| CN113698081A true CN113698081A (en) | 2021-11-26 |
| CN113698081B CN113698081B (en) | 2022-11-22 |
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| CN213924487U (en) * | 2020-12-23 | 2021-08-10 | 吴江南玻华东工程玻璃有限公司 | Air grid structure for reducing stress spots of toughened glass |
| CN113716852A (en) * | 2021-09-23 | 2021-11-30 | 湖北亿钧耀能新材股份公司 | Production method of weak stress spot tempered glass |
| CN113816595A (en) * | 2021-10-25 | 2021-12-21 | 湖北亿钧耀能新材股份公司 | Saddle-shaped toughened glass's forced air cooling setting device |
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