CN110935987A - Low-e glass coating vacuum cavity welding process - Google Patents
Low-e glass coating vacuum cavity welding process Download PDFInfo
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- CN110935987A CN110935987A CN201911405948.4A CN201911405948A CN110935987A CN 110935987 A CN110935987 A CN 110935987A CN 201911405948 A CN201911405948 A CN 201911405948A CN 110935987 A CN110935987 A CN 110935987A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/235—Preliminary treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/12—Vessels
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses a welding process of a vacuum cavity for a low-e glass coating, which comprises the following steps of: pretreatment of plates and profiles; before backing welding by argon arc welding, completely removing rust, oil stain and sundries, grinding the welding seam and the periphery until the natural color of metal is seen, and then performing argon arc welding; pre-heating by using a drying gun after derusting before welding, and coating rust preventive oil after pre-heating; four vertical welding processes of four hinged plates for forming the low-e glass coating vacuum cavity are arranged at the last process of the welding process for welding; reserving 6mm of shrinkage for the plate and the section of the low-e glass coating vacuum cavity, and jacking up the horizontal plate of the low-e glass coating vacuum cavity where the hinged plate is located by 1cm by using a jack during welding; and after the welding is finished and cooled, checking the flatness of the welded steel by using a guiding rule. The invention can avoid the welding deformation of the large-scale low-e glass coating vacuum cavity, and can realize the coping in the vertical positioning process before the hinge plate is welded, thereby reducing the clearing and coping amount.
Description
Technical Field
The invention relates to a welding process of a vacuum cavity for low-e glass coating.
Background
The large-sized Low-E glass coating vacuum cavity can reach 6.8 meters or even 9 meters (Low-E glass is also called Low-emissivity glass), so that the large-sized vacuum cavity is easy to deform after welding, the welding process and the welding support tool are particularly important during welding, and in view of the fact that rust, oil stains and impurities are generally required to be thoroughly removed before welding, the welding seam and the periphery of the welding seam are polished until the welding seam is in the original color of metal, then argon arc welding is carried out, and in addition, the Low-E glass coating vacuum cavity needs to be vertically positioned before the welding of a hinged plate, if the removal and polishing amount can be reduced, and rigid restraint is formed after vertical positioning to prevent welding deformation, the vacuum cavity is a great technical progress.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a welding process of a low-e glass coating vacuum cavity, which can avoid the welding deformation of a large-scale low-e glass coating vacuum cavity, realize coping in the vertical positioning process before the welding of a hinged plate and reduce the clearing and coping amount.
In order to achieve the purpose, the technical scheme of the invention is to design a welding process of a vacuum cavity for low-e glass coating, which comprises the following steps:
s1: the plate and the section bar are straightened and leveled after being discharged, the assembly welding end face of the plate needs to be welded after being machined, the cutting end face and the side line of the part need to be flat and smooth, the hole needs to be drilled, milled or bored to be formed, and the surface of the plate with good surface quality is selected as the inner surface of the cavity, namely, the surface tissue structure is compact without obvious air holes;
s2: before backing welding by argon arc welding, completely removing rust, oil stain and sundries, grinding the welding seam and the periphery until the natural color of metal is seen, and then performing argon arc welding;
in the step S2, a drying gun is used for preheating after derusting before welding, and rust preventive oil is coated after preheating; four vertical welding processes of four hinged plates for forming the low-e glass coating vacuum cavity are arranged at the last process of the welding process for welding; reserving 6mm of shrinkage for the plate and the section of the low-e glass coating vacuum cavity, and jacking up the horizontal plate of the low-e glass coating vacuum cavity where the hinged plate is located by 1cm by using a jack during welding; and after the welding is finished and cooled, checking the flatness of the welded steel by using a guiding rule. The welding process can avoid the welding deformation of the large-scale low-e glass coating vacuum cavity, and the large-scale low-e glass coating vacuum cavity meeting the product requirements is processed.
The further technical scheme is that the plates and the section bars forming the low-e glass coating vacuum cavity are made of carbon steel plates.
The further technical scheme is that the hinged plate of the low-e glass coating vacuum cavity is vertically positioned before welding, and the cleaning and polishing process in the step S2 is carried out while the hinged plate is vertically positioned. The process of removing and grinding is fused into the process of vertical positioning of the hinged plate, the removing and grinding amount is reduced, and after the vertical positioning, a rigid restraint is formed by a tightening mechanism arranged on a vertical positioning structure (which comprises a grinding and rust removing component) to prevent welding deformation.
The technical scheme is that the vertical positioning process adopts a vertical positioning mechanism which comprises channel steel for containing a hinged plate, the upper end of the channel steel is integrally connected with two inclined plates inclined with the vertical direction, the two inclined plates and the channel steel form a containing structure with a large upper part and a small lower part, the surface of each inclined plate facing the hinged plate is fixedly provided with at least one sleeve, a jacking rod is arranged in each sleeve in a sliding manner, one end, positioned on each sleeve, of each jacking rod is connected with the corresponding inclined plate through an elastic piece, the other end of each jacking rod is provided with a friction head, and the distance between the two friction heads, positioned at the same horizontal height, on the two inclined plates is smaller than; the port of the sleeve pipe, which is far away from the inclined plate, is provided with an inner flanging used for limiting the top stay bar, and the edge of one end, which is positioned on the sleeve pipe, of the top stay bar is provided with an outer flanging matched with the inner flanging. The elastic piece is other elastic pieces such as spring or high-elastic sponge or high density sponge, can keep elasticity and can guarantee to still can keep elasticity after repetitious usage (by the extrusion). Because the distance between the two friction heads at the same horizontal height on the two inclined plates when the elastic piece is in a loose state is smaller than the thickness of the hinged plate, the top stay bar can be slightly jacked into the sleeve when the hinged plate is placed to the containing structure, so that the surface of the hinged plate is rubbed by the friction heads in the placing process, and the effects of removing oil stains and removing rust and sundries are achieved.
The further technical proposal is that the friction head is spherical elastic sponge.
The technical scheme is that each inclined plate is provided with an upper row of sleeves and a lower row of sleeves, each row of sleeves is at the same height, the friction heads correspondingly arranged at the upper row of sleeves are spherical elastic sponges, and the friction heads correspondingly arranged at the lower row of sleeves are spherical grinding wheels. For the effect of guaranteeing to get rid of greasy dirt debris, can set up every row of sleeve pipe and lean on the range in proper order to form one row of effect of cleaning, also can change one row of sleeve pipe into the structure of a channel-section steel certainly, can slide the kicking block in the channel-section steel through the spring setting, the fixed cubic friction head (or trapezoidal form friction head) that adopt elastic sponge to make that sets up in its side of keeping away from the channel-section steel of kicking block, the effect of getting rid of greasy dirt like this is better, the coverage area of getting rid of greasy dirt is bigger.
The further technical proposal is that the material of the spherical grinding wheel is brown corundum grinding material or monocrystalline corundum grinding material.
The technical scheme is that an upper row and a lower row of a plurality of sleeves are arranged on each inclined plate, the sleeves in each row are positioned at the same height, the materials of friction heads correspondingly arranged at the sleeves in the upper row are brown corundum abrasive materials or monocrystalline corundum abrasive materials, the friction heads are rotatably arranged at the end parts, far away from the inclined plates, of the top supporting rods, the parts, far away from the top supporting rods, of the friction heads are blade-shaped, and one ends, close to the top supporting rods, of the friction heads are in a circular groove shape matched with the end parts of the top supporting rods.
The friction head is characterized in that a first friction layer is arranged on the groove side wall of the end part of the friction head in a circular groove shape, and a second friction layer matched with the first friction layer is arranged on the side surface of the end part of the top stay bar close to the friction head. The second friction layer which exceeds the side surface of the top stay bar and the first friction layer arranged on the side wall of the groove are matched, so that the rotation of the friction head and the top stay bar can be realized only by reaching a certain friction force, the friction head and the top stay bar can rotate relatively, the function of coping the surface of the hinge plate is realized in the process of lowering the hinge plate, the friction head is subjected to resistance when rotating until the first friction layer is contacted with the second friction layer in the whole lowering process of the hinge plate, the friction head rotates temporarily (or stops rotating temporarily), at the moment, the hinge plate continues to lower, the surface of the hinge plate is subjected to the friction effect of the friction head due to the stop rotation of the friction head, the surface of the hinge plate is grinded, and the friction head rotates along with the continuous lowering of the hinge plate (after the resistance between the first friction layer and the second friction layer is overcome), therefore, the friction head polishes the surface of the hinge plate for, and under the action of the elastic piece, the top stay bar always pushes the friction head to enable the friction head to tightly abut against the hinged plate, so that the surface of the hinged plate can be polished continuously in the whole process of lowering the hinged plate.
The invention has the advantages and beneficial effects that: welding deformation of the large-sized low-e glass coating vacuum cavity can be avoided, grinding is achieved in the vertical positioning process before the hinged plate is welded, and the cleaning and grinding amount can be reduced. The process of removing and grinding is fused into the process of vertical positioning of the hinged plate, the removing and grinding amount is reduced, and after the vertical positioning, a rigid restraint is formed by a tightening mechanism arranged on a vertical positioning structure (which comprises a grinding and rust removing component) to prevent welding deformation. Because the distance between the two friction heads at the same horizontal height on the two inclined plates when the elastic piece is in a loose state is smaller than the thickness of the hinged plate, the top stay bar can be slightly jacked into the sleeve when the hinged plate is placed to the containing structure, so that the surface of the hinged plate is rubbed by the friction heads in the placing process, and the effects of removing oil stains and removing rust and sundries are achieved. In the whole lowering process of the hinged plate, the friction head grinds the surface of the hinged plate for many times, and the top supporting rod pushes the friction head to enable the friction head to tightly abut against the hinged plate under the action of the elastic piece, so that the grinding of the surface of the hinged plate can be continuously carried out in the whole lowering process of the hinged plate. The friction head is made of materials similar to a grinding wheel: the brown corundum abrasive and the single crystal corundum abrasive are convenient for grinding the welding seam and the surrounding plate surface, and are convenient for removing rust.
Drawings
FIG. 1 is a schematic view of a low-e glass coating vacuum chamber according to a second embodiment of the welding process of the low-e glass coating vacuum chamber of the present invention;
FIG. 2 is a schematic view of a vertical positioning mechanism in a second embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the portion of the sleeve of FIG. 2;
fig. 4 is an exploded view of the friction head and the front section of the top stay according to the third embodiment of the present invention.
In the figure: 1. a hinge plate; 2. channel steel; 3. a sloping plate; 4. a sleeve; 5. a top brace rod; 6. an elastic member; 7. a friction head; 8. a first friction layer; 9. a second friction layer.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The first embodiment is as follows:
the invention relates to a welding process of a vacuum cavity for a low-e glass coating, which comprises the following steps:
s1: the plate and the section bar are straightened and leveled after being discharged, the assembly welding end face of the plate needs to be welded after being machined, the cutting end face and the side line of the part need to be flat and smooth, the hole needs to be drilled, milled or bored to be formed, and the surface of the plate with good surface quality is selected as the inner surface of the cavity, namely, the surface tissue structure is compact without obvious air holes;
s2: before backing welding by argon arc welding, completely removing rust, oil stain and sundries, grinding the welding seam and the periphery until the natural color of metal is seen, and then performing argon arc welding;
in the step S2, a drying gun is used for preheating after derusting before welding, and rust preventive oil is coated after preheating; four vertical welding processes of four hinged plates for forming the low-e glass coating vacuum cavity are arranged at the last process of the welding process for welding; reserving 6mm of shrinkage for the plate and the section of the low-e glass coating vacuum cavity, and jacking up the horizontal plate of the low-e glass coating vacuum cavity where the hinged plate is located by 1cm by using a jack during welding; and after the welding is finished and cooled, checking the flatness of the welded steel by using a guiding rule. The plate and the section forming the low-e glass coating vacuum cavity are made of carbon steel plates.
Example two:
the difference from the first embodiment is that, as shown in fig. 1 to 3, the hinge plate 1 of the low-e glass coating vacuum chamber is vertically positioned before welding, and the cleaning and grinding process described in step S2 is performed while the hinge plate is vertically positioned. The vertical positioning process adopts a vertical positioning mechanism which comprises a channel steel 2 for containing a hinged plate 1, the upper end of the channel steel 2 is integrally connected with two inclined plates 3 inclined with the vertical direction, the two inclined plates 3 and the channel steel 2 form a containing structure with a large upper part and a small lower part, the surface of each inclined plate 3 facing the hinged plate 1 is fixedly provided with at least one sleeve 4, a jacking rod 5 is arranged in each sleeve 4 in a sliding manner, one end, positioned at the sleeve 4, of each jacking rod 5 is connected with the inclined plate 3 through an elastic piece 6, the other end of each jacking rod 5 is provided with a friction head 7, and the distance between the two friction heads 7 at the same horizontal height on the two inclined plates 3 is smaller than the thickness of the; the port of the sleeve 4 far away from the inclined plate 3 is provided with an inward flange for limiting the top stay bar 5, and the edge of one end, located on the sleeve 4, of the top stay bar 5 is provided with an outward flange matched with the inward flange. Each inclined plate 3 is provided with an upper row and a lower row of a plurality of sleeves 4, each row of sleeves 4 is at the same height, the friction heads 7 correspondingly arranged at the upper row of sleeves 4 are spherical elastic sponges, and the friction heads 7 correspondingly arranged at the lower row of sleeves 4 are spherical grinding wheels. The material of the spherical grinding wheel is brown corundum abrasive or monocrystalline corundum abrasive.
Example three:
the difference from the second embodiment is that, as shown in fig. 4, each inclined plate is provided with two rows of upper and lower sleeves, each row of sleeves is at the same height, the material of the friction head 7 correspondingly arranged at the sleeve in the upper row is brown corundum abrasive or single crystal corundum abrasive, the friction head 7 is rotatably arranged at the end of the top stay bar far away from the inclined plate, the part of the friction head 7 far away from the top stay bar is blade-shaped, and one end of the friction head 7 near the top stay bar is in a circular groove shape matched with the end of the top stay bar. The friction head 7 is provided with a first friction layer 8 on the side wall of the groove of the end part in the shape of a circular groove, and the side surface of the top stay bar close to the end part of the friction head 7 is provided with a second friction layer 9 matched with the first friction layer 8.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
- The welding process of the vacuum cavity of the low-e glass coating is characterized by comprising the following steps of:s1: the plate and the section bar are straightened and leveled after being discharged, the assembly welding end face of the plate needs to be welded after being machined, the cutting end face and the side line of the part need to be flat and smooth, the hole needs to be drilled, milled or bored to be formed, and the surface of the plate with good surface quality is selected as the inner surface of the cavity, namely, the surface tissue structure is compact without obvious air holes;s2: before backing welding by argon arc welding, completely removing rust, oil stain and sundries, grinding the welding seam and the periphery until the natural color of metal is seen, and then performing argon arc welding;in the step S2, a drying gun is used for preheating after derusting before welding, and rust preventive oil is coated after preheating; four vertical welding processes of four hinged plates for forming the low-e glass coating vacuum cavity are arranged at the last process of the welding process for welding; reserving 6mm of shrinkage for the plate and the section of the low-e glass coating vacuum cavity, and jacking up the horizontal plate of the low-e glass coating vacuum cavity where the hinged plate is located by 1cm by using a jack during welding; and after the welding is finished and cooled, checking the flatness of the welded steel by using a guiding rule.
- 2. The welding process of claim 1, wherein the material of the plate and the section forming the vacuum chamber is carbon steel plate.
- 3. The welding process of claim 2, wherein the hinged plate of the vacuum chamber is positioned vertically before welding, and the cleaning and polishing process of step S2 is performed while the hinged plate is positioned vertically.
- 4. The low-e glass coating vacuum cavity welding process according to claim 3, wherein a vertical positioning mechanism is adopted in the vertical positioning process, and comprises a channel steel for containing a hinged plate, two inclined plates inclined to the vertical direction are integrally connected to the upper end of the channel steel, the two inclined plates and the channel steel form a containing structure with a large upper part and a small lower part, at least one sleeve is fixedly arranged on the surface of each inclined plate facing the hinged plate, a jacking rod is arranged in each sleeve in a sliding mode, the jacking rod is located at one end of each sleeve and connected with the inclined plates through an elastic piece, the other end of each jacking rod is provided with a friction head, and the distance between the two friction heads on the two inclined plates at the same horizontal height when the elastic pieces are in a loose; the port of the sleeve pipe, which is far away from the inclined plate, is provided with an inner flanging used for limiting the top stay bar, and the edge of one end, which is positioned on the sleeve pipe, of the top stay bar is provided with an outer flanging matched with the inner flanging.
- 5. The welding process of claim 4, wherein the friction head is a spherical elastic sponge.
- 6. The welding process of the low-e glass coating vacuum cavity of claim 4, wherein each inclined plate is provided with an upper row and a lower row, each row is provided with a plurality of sleeves, each row of sleeves is at the same height, the friction heads correspondingly arranged at the upper row of sleeves are spherical elastic sponges, and the friction heads correspondingly arranged at the lower row of sleeves are spherical grinding wheels.
- 7. The welding process of the vacuum chamber for low-e glass coating of claim 6, wherein the spherical grinding wheel is made of brown corundum abrasive or single crystal corundum abrasive.
- 8. The low-e glass coating vacuum cavity welding process of claim 4, wherein each inclined plate is provided with an upper row and a lower row, each row is provided with a plurality of sleeves, each row of sleeves is at the same height, friction heads correspondingly arranged at the sleeves at the upper row are made of brown corundum abrasive or monocrystalline corundum abrasive, the friction heads are rotatably arranged at the end parts, far away from the inclined plate, of the top supporting rods, the parts, far away from the top supporting rods, of the friction heads are blade-shaped, and one ends, close to the top supporting rods, of the friction heads are in circular groove shapes matched with the end parts of the top supporting rods.
- 9. The welding process for vacuum chamber of low-e glass coating according to claim 8, wherein the friction head has a first friction layer on the side wall of the circular groove, and the top stay has a second friction layer matching the first friction layer on the side surface of the friction head near the end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911405948.4A CN110935987B (en) | 2019-12-31 | 2019-12-31 | Low-e glass coating vacuum cavity welding process |
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| CN201911405948.4A CN110935987B (en) | 2019-12-31 | 2019-12-31 | Low-e glass coating vacuum cavity welding process |
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| CN106808060A (en) * | 2017-03-28 | 2017-06-09 | 凯盛重工有限公司 | A kind of process for ensureing vacuum coating cavity weld joint air-tight and intensity |
| CN107214258A (en) * | 2017-06-30 | 2017-09-29 | 四川宇桥铁塔有限公司 | It is a kind of to improve the process that equal leg angle closes cutin amount |
| CN207724059U (en) * | 2017-12-28 | 2018-08-14 | 江苏润明不锈钢制品有限公司 | Bolt head compresses mirror polish fixed structure |
| CN108453170A (en) * | 2018-05-30 | 2018-08-28 | 重庆伟福机械有限公司 | Decompressor with polishing function |
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2019
- 2019-12-31 CN CN201911405948.4A patent/CN110935987B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203579075U (en) * | 2013-11-28 | 2014-05-07 | 温州天基机器人自动化有限公司 | Fixture |
| JP2016123986A (en) * | 2014-12-26 | 2016-07-11 | クリナップ株式会社 | Welding method of stainless steel material |
| CN106272002A (en) * | 2016-08-17 | 2017-01-04 | 安徽鼎恒再制造产业技术研究院有限公司 | A kind of bent axle submerged arc welding derusting device |
| CN206173436U (en) * | 2016-10-10 | 2017-05-17 | 江阴市光科真空机械有限公司 | Vacuum cavity for optics of coating film high quality |
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| CN107214258A (en) * | 2017-06-30 | 2017-09-29 | 四川宇桥铁塔有限公司 | It is a kind of to improve the process that equal leg angle closes cutin amount |
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| CN108453170A (en) * | 2018-05-30 | 2018-08-28 | 重庆伟福机械有限公司 | Decompressor with polishing function |
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Denomination of invention: Welding process of low-e glass coating vacuum cavity Effective date of registration: 20230227 Granted publication date: 20210514 Pledgee: Bank of Nanjing Co.,Ltd. Taizhou Branch Pledgor: Optical Vacuum Technology (Taixing) Co.,Ltd. Registration number: Y2023320000105 |
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