CN107052630B - Sleeve type chimney titanium steel composite plate weld joint protection device and use method - Google Patents
Sleeve type chimney titanium steel composite plate weld joint protection device and use method Download PDFInfo
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- CN107052630B CN107052630B CN201710148357.8A CN201710148357A CN107052630B CN 107052630 B CN107052630 B CN 107052630B CN 201710148357 A CN201710148357 A CN 201710148357A CN 107052630 B CN107052630 B CN 107052630B
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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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
- B23K9/02—Seam welding; Backing means; Inserts
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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
- B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
- B23K9/232—Arc welding or cutting taking account of the properties of the materials to be welded of different metals
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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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
- B23K9/321—Protecting means
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Abstract
The invention discloses a sleeve type chimney titanium steel composite plate weld joint protection device and a use method thereof, wherein after the rolling, forming and assembling of a titanium steel composite plate in a smoke exhaust inner cylinder of a sleeve type chimney and before the welding of a butt V-shaped weld joint of the titanium steel composite plate, a protection device is manufactured on a titanium plate surface of the weld joint by adopting galvanized C-shaped steel, and when the welding of a steel plate back cover weld joint of the titanium steel composite plate is carried out, the C-shaped steel of the protection device is adsorbed on the titanium steel composite plate by a strong magnet on the titanium plate surface; when the back of the steel plate of the titanium steel composite plate is back-gouged, the thin steel plate at the opening of the C-shaped steel is removed, and the back-gouging of the bottom-sealed welding seam of the steel plate can be performed by a carbon arc gouging machine along the elongated notch. Because rock wool material is filled between the C-shaped steel and the titanium plate surface, when a bottom sealing welding line and back surface are back-gouged and welded, pollutants such as welding slag, splash and smoke are not contacted with the titanium plate, adverse factors such as welding line crack and corrosion resistance reduction caused by mutual fusion of titanium steel or iron pollution during welding are avoided, the structure is simple and easy to use, and the construction quality is improved and the construction efficiency is accelerated.
Description
Technical Field
The invention relates to a building construction auxiliary device and a using method thereof, in particular to a sleeve type chimney titanium steel composite plate weld joint protection device and a using method thereof.
Background
The engineering chimney of thermal power plant generally adopts the telescopic chimney structural style, namely separate concrete outer cylinder and inner cylinder of discharging fume of bearing, make the outer cylinder stress structure of concrete not contact with strong corrosive flue gas, the inner cylinder of discharging fume chooses the impervious seal to be good at the same time, the wholeness is strong, titanium steel clad plate that the dead weight is light is made, the titanium steel clad plate has structural high strength steel, corrosion-resistant titanium's combination property, it is a comparatively ideal anticorrosive treatment material. In the welding construction of the titanium steel composite plate in the inner cylinder of the smoke exhaust of the sleeve chimney, a welding seam bevel is generally in a butt joint mode, the grade of the welding seam is first grade or not lower than second grade, and the welding is characterized in that titanium and steel cannot be subjected to fusion welding, once the titanium welding seam is polluted or mutually fused with the steel, the local part of the titanium welding seam becomes brittle, and the welding seam cracks; meanwhile, the potential of the electrode of the titanium iron which is separated out from the titanium welding line containing iron or polluted by iron ions is low, so that the corrosion resistance of the titanium material is greatly reduced. The welding seam of the titanium steel composite plate is so close, so that the situation that the long and continuous steel plate and the butt welding seam of the titanium plate are mutually fused or polluted by iron cannot be ensured. Therefore, in the welding construction process of the sleeve type chimney engineering smoke exhaust inner cylinder titanium steel composite plate, the appropriate welding seam welding protection technology and device are adopted, adverse factors such as welding seam cracks and corrosion resistance reduction caused by mutual fusion or iron pollution of titanium steel during welding are avoided, meanwhile, the welding convenience of the sleeve type chimney smoke exhaust inner cylinder titanium steel composite plate is further improved, and the improvement of the welding quality and the corrosion resistance are the problems required to be solved in the chimney engineering construction.
Disclosure of Invention
Aiming at the defects of the existing product, the invention provides the sleeve type chimney titanium steel composite plate weld joint protection device which is simple in structure, strong in practicability, safe, reliable and reusable.
The invention relates to a sleeve type chimney titanium steel composite plate weld joint protection device, which consists of galvanized C-shaped steel, end steel plates, rock wool, a connecting steel plate, a cover plate, a bolt, a magnet and iron bars; the galvanized C-shaped steel is the steel with a C-shaped section rolled by a steel plate with the thickness of 3mm, the surface is galvanized, the radian is processed according to the diameter of the titanium steel composite plate in the smoke exhaust inner barrel, end steel plates are welded at the left end and the right end, and a connecting steel plate is welded in the middle; drilling holes in a web plate and a limb back opening of the galvanized C-shaped steel and processing threads, wherein the web plate is provided with a long-strip-shaped notch, strip-shaped rock wool is arranged around the web plate, and the web plate and the limb back opening are fixed by matching bolts with narrow iron strips; a cover plate made of a thin steel plate is installed at the opening of the back of the C-shaped steel limb through a bolt and is used for temporarily collecting welding slag and splashing of a welding seam of the bottom cover; and strong magnets are arranged at two ends of the outer side of the galvanized C-shaped steel, so that the titanium steel composite plate welding line protection device is integrally adsorbed on a titanium plate surface of the titanium steel composite plate.
A using method of a sleeve type chimney titanium steel composite plate weld joint protection device comprises the following steps;
step 1, after rolling, forming and assembling a titanium steel composite plate in a smoke exhaust inner cylinder of a sleeve type chimney, before welding a butt joint V-shaped weld joint of the titanium steel composite plate, manufacturing a protection device on the surface of the titanium plate of the weld joint by adopting galvanized C-shaped steel, processing radian of the galvanized C-shaped steel according to the diameter of the smoke exhaust inner cylinder titanium steel composite plate, reserving a long strip-shaped notch in the middle, enabling an opening of the C-shaped steel to be upward, filling rock wool material between the C-shaped steel and the surface of the titanium plate, enabling the rock wool to be strip-shaped, fixing the rock wool on the C-shaped steel by using an iron strip matched with; when welding seams of the steel plate back cover of the titanium steel composite plate are welded, the C-shaped steel of the protection device is adsorbed on the titanium steel composite plate by a strong magnet on the surface of the titanium plate; when back gouging of the steel plate of the titanium steel composite plate, removing the thin steel plate cover plate at the opening of the C-shaped steel, and gouging the welding seam at the bottom of the steel plate seal along the elongated notch by using carbon arc air gouging; because rock wool material is filled between the C-shaped steel and the surface of the titanium plate, when the back weld and the back of the back cover are back-gouged and welded, pollutants such as welding slag, splash, smoke and the like are not contacted with the titanium plate, thereby avoiding the mutual melting of the titanium steel or iron pollution during welding;
step 2, rolling and forming the titanium steel composite plate of the inner cylinder of the sleeve type chimney smoke exhaust, assembling the titanium steel composite plate welding line protection device before welding the butt joint V-shaped welding line of the titanium steel composite plate after the titanium steel composite plate is assembled into a circle in a slicing mode: installing strip rock wool around the long-strip-shaped notch of the galvanized C-shaped steel web plate, fixing the rock wool by using bolts to match with narrow iron strips, and installing a cover plate at the back opening of the C-shaped steel limb by using bolts; placing the C-shaped steel on the titanium plate surface of the titanium steel composite plate with the opening of the C-shaped steel facing upwards, enabling the long-strip-shaped notch to be overlapped with the butt welding seam of the titanium steel composite plate, completely laying the strip rock wool material filled between the long-strip-shaped notch and the titanium plate surface, and adsorbing the C-shaped steel of the protection device on the titanium steel composite plate by using a strong magnet; welding slag and spatter generated during welding of the welding line of the back cover are temporarily collected in a protection device; when the back of the steel plate of the titanium steel composite plate is subjected to back gouging and welding, the thin steel plate cover plate at the opening of the C-shaped steel plate is removed, and the welding seam at the bottom of the steel plate can be back gouged by a carbon arc gouging and welded along the elongated notch. Because the rock wool material is filled between C shaped steel and the titanium plate face, when the welding seam and the back chipping of back cover and welding, pollutants such as welding slag, splash, flue gas do not contact with the titanium plate to welding seam protector simple structure adopts powerful magnet to adsorb on titanium steel composite sheet titanium plate face, can conveniently remove adjacent position after welding one section and use, can not harm the titanium plate face, also can use along butt weld complete circle.
After the titanium steel composite plate of the inner cylinder of the smoke exhaust of the sleeve type chimney is rolled, formed and assembled and before the butt joint of V-shaped welding seams, a galvanized C-shaped steel is adopted to manufacture a protection device on the surface of the titanium plate of the welding seams, the radian of the C-shaped steel is processed according to the diameter of the titanium steel composite plate, a long strip-shaped notch is reserved in the middle, the opening of the C-shaped steel faces upwards, rock wool materials are filled between the C-shaped steel and the surface of the titanium plate, and a cover plate made of a thin. When the steel plate back sealing welding seam of the titanium steel composite plate is welded, the C-shaped steel of the protection device is adsorbed on the titanium steel composite plate by a strong magnet on the surface of the titanium plate; when the back of the steel plate of the titanium steel composite plate is back-gouged, the thin steel plate at the opening of the C-shaped steel is removed, and the back-gouging of the bottom-sealed welding seam of the steel plate can be performed by a carbon arc gouging machine along the elongated notch. Because rock wool material is filled between the C-shaped steel and the titanium plate surface, when the back sealing welding line and the back surface are back gouged and welded, pollutants such as welding slag, splashing, smoke and the like are not contacted with the titanium plate, and the titanium steel is prevented from being mutually fused or polluted by iron during welding.
Through setting up titanium steel composite sheet welding seam protection device, pack rock wool material between steel sheet and titanium board to adsorb with strong magnet, pollutant such as welding slag, splash, flue gas that produce when making the welding do not contact with the titanium board face, take place titanium steel when avoiding welding and fuse or receive iron pollution, unfavorable factors such as welding seam crackle and corrosion resisting property reduction that cause, technical economy is reasonable.
The titanium steel composite plate weld joint protection device is composed of galvanized C-shaped steel, rock wool, magnets and the like. The C-shaped steel is processed to form a radian and a long-strip-shaped notch, rock wool materials are filled between the C-shaped steel and the titanium plate surface, and the protection device is adsorbed on the titanium plate surface of the titanium steel composite plate by using a strong magnet, so that the titanium plate surface is not damaged, and the protection device can be used along the whole circumference of a butt welding line. The structure is simple and easy to use, the construction quality can be improved, the construction efficiency is accelerated, the construction organization is convenient to realize, and great convenience is provided for the construction of the titanium steel composite plate of the smoke exhaust inner cylinder of the sleeve type chimney.
The invention has the beneficial effects that: 1. before welding after the rolling forming and assembling of the titanium steel composite plate of the smoke exhaust inner cylinder of the sleeve type chimney, the C-shaped steel attached to the titanium plate surface is adopted to manufacture a welding line protection device, and rock wool materials are filled between the C-shaped steel and the titanium plate surface, so that pollutants such as welding slag, splashing, smoke and the like are not contacted with the titanium plate surface, the condition that the titanium steel is mutually fused or polluted by iron during welding, and adverse factors such as welding line crack, reduction of corrosion resistance and the like are avoided.
Drawings
Fig. 1 is a schematic diagram of the operation of the present invention.
Figure 2 is a cross-sectional view of the installation a-a of the present invention.
In the figure: the steel plate 1, the titanium plate 2, the welding seam 3, the C-shaped steel 4, the end steel plate 5, the long-strip-shaped notch 6, the rock wool 7, the connecting steel plate 8, the cover plate 9, the bolt 10, the magnet 11 and the iron bar 12.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
In the figure, the sleeve type chimney titanium steel composite plate weld joint protection device mainly comprises a steel plate 1, a titanium plate 2, a weld joint 3, C-shaped steel 4, an end steel plate 5, a long-strip-shaped notch 6, rock wool 7, a connecting steel plate 8, a cover plate 9, a bolt 10, a magnet 11 and an iron bar 12.
The invention relates to a sleeve type chimney titanium steel composite plate weld joint protection device, which can be seen from figures 1 and 2: after the titanium steel composite board of the inner cylinder of the telescopic chimney smoke exhaust is rolled, formed and assembled, before the titanium steel composite board is butted with a V-shaped welding line 3 and welded, a galvanized C-shaped steel 4 is adopted to manufacture a protection device on 2 surfaces of a titanium plate of the welding line, the radian of the C-shaped steel 4 is processed according to the diameter of the titanium steel composite board of the inner cylinder of the smoke exhaust, a long strip-shaped notch 6 is reserved in the middle of the C-shaped steel 4, an opening of the C-shaped steel 4 faces upwards, rock wool 7 materials are filled between the C-shaped steel 4 and the titanium plate 2 surfaces, the rock wool 7 is strip-shaped and is fixed on the C-shaped. When a bottom sealing weld seam 3 of a steel plate 1 of the titanium steel composite plate is welded, a strong magnet 11 is used on the surface of the titanium plate 2 to adsorb C-shaped steel 4 of a protection device on the titanium steel composite plate; when the back of the steel plate 1 of the titanium steel composite plate is subjected to back gouging, the thin steel plate cover plate 9 at the opening of the C-shaped steel 4 is removed, and the back-sealing welding seam 3 of the steel plate 1 can be subjected to back gouging by a carbon arc gouging machine along the elongated notch 6. Because rock wool 7 material is filled between the C-shaped steel 4 and the surface of the titanium plate 2, when the back cover welding seam 3 and the back surface are back-gouged and welded, pollutants such as welding slag, splashing, smoke and the like are not contacted with the titanium plate 2, and the titanium steel is prevented from being mutually fused or being polluted by iron during welding.
The titanium steel composite plate weld joint protection device is composed of galvanized C-shaped steel 4, an end steel plate 5, rock wool 7, a connecting steel plate 8, a cover plate 9, a bolt 10, a magnet 11 and an iron bar 12. The galvanized C-shaped steel 4 is a steel with a C-shaped section rolled by a steel plate with the thickness of 3mm, the surface is galvanized, the radian is processed according to the diameter of the titanium steel composite plate in the smoke exhaust inner cylinder, end steel plates 5 are welded at the left end and the right end, and a connecting steel plate 8 is welded in the middle; the galvanized C-shaped steel 4 is drilled with holes and processed with threads on the web plate and the limb back opening, the web plate is provided with a strip-shaped notch 6, strip-shaped rock wool 7 is arranged on the periphery of the web plate and is fixed by a bolt 10 in cooperation with a narrow iron strip 12, and when a bottom sealing welding line 3 and the back are back-gouged and welded, the rock wool 7 can prevent welding slag, splashing, smoke and other pollutants from contacting the titanium plate 2; a cover plate 9 made of a thin steel plate is arranged at the opening of the back of the C-shaped steel 4 limb by a bolt 10 and is used for temporarily collecting welding slag and splashing of the bottom-sealing welding seam 3; and strong magnets 11 are arranged at two ends of the outer side of the galvanized C-shaped steel 4, so that the titanium steel composite plate welding seam protection device can be integrally adsorbed on the titanium plate surface 2 of the titanium steel composite plate.
The titanium steel composite board edge rolling forming of the inner cylinder of the telescopic chimney smoke exhaust is carried out, and after the titanium steel composite board is assembled into a circle in a slicing mode, the titanium steel composite board welding line protection device is assembled before the titanium steel composite board butt joint V-shaped welding line 3 is welded: strip rock wool 7 is arranged around a strip-shaped notch 6 of a web plate of the galvanized C-shaped steel 4 and is fixed by a bolt 10 in cooperation with a narrow iron bar 12, and a cover plate 9 is arranged at the back opening of the C-shaped steel 4 by the bolt 10. Lay the opening of C shaped steel 4 up on titanium steel composite sheet titanium plate 2 faces to make rectangular shape notch 6 and titanium steel composite sheet butt weld 3 coincide each other, the strip rock wool 7 material of packing between rectangular shape notch 6 and the titanium plate 2 faces should lay completely, adsorb protection device's C shaped steel 4 on the titanium steel composite sheet with powerful magnet 11. Welding slag and spatter generated during welding of the back cover welding seam 3 are temporarily collected in a protection device; when the back of the steel plate 1 of the titanium steel composite plate is back-gouged and welded, the thin steel plate cover plate 9 at the opening of the C-shaped steel 4 is removed, and the back-closed welding seam 3 of the steel plate 1 can be back-gouged and welded by a carbon arc gouging machine along the elongated notch 6. Because the rock wool 7 material is filled between C shaped steel 4 and the 2 faces of titanium plate, when back cover welding seam 3 and back chipping and welding, pollutants such as welding slag, splash, flue gas do not contact with titanium plate 2 to 3 protector simple structure of welding seam adopt strong magnet 11 to adsorb on 2 faces of titanium steel composite sheet titanium plate, can conveniently remove adjacent position after welding one section and use, can not harm 2 faces of titanium plate, also can use along 3 full circumferences of butt weld. Through setting up 3 protection device of titanium steel composite sheet welding seam like this, make pollutants such as welding slag that produces during the welding, splash, flue gas not with 2 face contactings of titanium board, take place titanium steel and mutually melt or receive iron pollution when can avoiding welding, the welding seam 3 crackles that cause and adverse factor such as corrosion resisting property reduce, simple structure is easy-to-use, when improving construction quality, accelerate the efficiency of construction, practice thrift construction cost, conveniently realize the construction tissue, it provides great convenience to discharge fume inner tube titanium steel composite sheet construction for telescopic chimney.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (1)
1. A using method of a sleeve type chimney titanium steel composite plate weld joint protection device is characterized by comprising the following steps; after the titanium steel composite plate in the smoke exhaust inner cylinder of the sleeve type chimney is rolled, formed and assembled, before the titanium steel composite plate is butted with a V-shaped welding seam (3) and welded, a galvanized C-shaped steel (4) is adopted to manufacture a protection device on the surface of the welding seam titanium plate (2), the galvanized C-shaped steel (4) is processed into radian according to the diameter of the smoke exhaust inner cylinder titanium steel composite plate, a long strip-shaped notch (6) is reserved in the middle, the opening of the C-shaped steel (4) faces upwards, rock wool (7) is filled between the C-shaped steel and the surface of the titanium plate (2), the rock wool (7) is strip-shaped and is fixed on the C-shaped steel (4) by an iron strip matching bolt, and a cover plate (9) made of; when a welding seam (3) at the back cover of a steel plate (1) of the titanium steel composite plate is welded, C-shaped steel (4) of a protection device is adsorbed on the titanium steel composite plate by a strong magnet (11) on the surface of the titanium plate (2); when back of a steel plate (1) of the titanium steel composite plate is subjected to back gouging, a thin steel plate cover plate (9) at an opening of the C-shaped steel (4) is removed, and a welding line (3) at the bottom sealing of the steel plate (1) is subjected to back gouging by a carbon arc gouging along a long-strip-shaped notch (6); because rock wool (7) is filled between the C-shaped steel (4) and the surface of the titanium plate (2), welding slag, splashing and smoke are not contacted with the titanium plate (2) during back gouging and welding of the welding line (3) and the back surface of the back cover, and the titanium steel is prevented from being mutually fused or polluted by iron during welding.
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| CN201710148357.8A CN107052630B (en) | 2017-03-14 | 2017-03-14 | Sleeve type chimney titanium steel composite plate weld joint protection device and use method |
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| CN201710148357.8A CN107052630B (en) | 2017-03-14 | 2017-03-14 | Sleeve type chimney titanium steel composite plate weld joint protection device and use method |
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| CN107052630B true CN107052630B (en) | 2020-01-10 |
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| CN108994489B (en) * | 2018-08-22 | 2023-05-12 | 天津市管道工程集团有限公司 | Welding seam reverse side protection device capable of improving welding qualification rate |
| CN113695761B (en) * | 2021-09-03 | 2023-08-04 | 耀族(唐山)金属制品有限公司 | Be applied to laser cutting machine of dysmorphism sheet metal component |
| CN114434032B (en) * | 2022-01-27 | 2023-08-22 | 山西建投装备制造有限公司 | Tower crane standard joint main limb connection earmuff assembly welding method |
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| CN204771086U (en) * | 2015-08-06 | 2015-11-18 | 中国能源建设集团黑龙江省火电第三工程有限公司 | Novel cover is dragged in welding protection |
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| JPH0890241A (en) * | 1994-09-19 | 1996-04-09 | Ohbayashi Corp | Wind shield device for weld |
| JPH1158076A (en) * | 1997-08-12 | 1999-03-02 | Ishikawajima Harima Heavy Ind Co Ltd | Backing device for connecting plate |
| JP2000291883A (en) * | 1999-04-09 | 2000-10-20 | Toda Constr Co Ltd | Method and device for curing welding of steel member |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204771086U (en) * | 2015-08-06 | 2015-11-18 | 中国能源建设集团黑龙江省火电第三工程有限公司 | Novel cover is dragged in welding protection |
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