CN113070547B - Steel structure on-site welding process - Google Patents
Steel structure on-site welding process Download PDFInfo
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- CN113070547B CN113070547B CN202110416713.6A CN202110416713A CN113070547B CN 113070547 B CN113070547 B CN 113070547B CN 202110416713 A CN202110416713 A CN 202110416713A CN 113070547 B CN113070547 B CN 113070547B
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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
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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
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
- B23K31/125—Weld quality monitoring
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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
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- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a steel structure field welding process, which belongs to the technical field of steel structure welding, and is provided with a welding rod drying box matched with the process, the welding rod drying box can dry a welding rod required to be used during welding, a heat preservation cylinder is used for preserving heat and insulating moisture of the dried welding rod after the welding rod is dried, and the phenomenon that the welding rod enters water to influence the welding effect after the welding rod is received is avoided.
Description
Technical Field
The invention relates to the technical field of steel structure welding, in particular to a steel structure on-site welding process.
Background
The welding manufacture of the steel structure starts from the preparation work of welding production, which comprises the technological examination of the structure, the design of process schemes and process rules, the process assessment, the establishment of process files and quality assurance files, the ordering of raw materials and auxiliary materials, the outsourcing and the self-design manufacture of assembly-welding equipment and equipment; then, the manufacturing process of the welding structure is really started from the material storage, and comprises the steps of material re-inspection storage, material preparation and processing, assembly-welding, postweld heat treatment, quality inspection and finished product acceptance inspection; wherein, the repair, the coating and the paint spraying are also alternated; finally, the whole process of warehousing the qualified products.
Use the welding rod to weld the steel construction usually when welding the steel construction, and the quality of welding rod plays crucial effect to the welding quality of steel construction, and one of them factor that influences the welding quality of welding rod is exactly what of welding rod moisture content and how to store the welding rod when using the welding rod, the drying device of welding rod is usually put the welding rod in the oven bakes and then takes out the use at present, not only lost a large amount of heats and external moisture can influence the good welding rod of stoving in the stoving case when taking out the welding rod, and when the welding rod carries out the use, the unnecessary welding rod of taking out can expose in the air, influence the result of use of welding rod.
Disclosure of Invention
1. Technical problem to be solved
The invention aims to provide a steel structure field welding process, which can realize a welding rod drying box used in cooperation with the process, can dry welding rods required in welding, and can use a heat-preservation cylinder to preserve and insulate heat and moisture of the dried welding rods after the welding rods are dried, so that the phenomenon that the welding rods enter water to influence the welding effect after the welding rods are led is avoided.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A steel structure on-site welding process comprises the following steps:
s1, checking before welding;
s2, cleaning the groove after the inspection is finished;
s3, checking the lining plate, the arc striking plate and extinguishing the arc;
s4, preheating the steel structure;
s5, drying the welding rods through a welding rod drying box, and sequentially carrying out positioning welding, root backing welding, filling welding and surface layer welding on the steel structure by using the dried welding rods;
s6, performing post heat treatment on the welded steel structure, and then performing heat preservation;
s7, checking the welding appearance of the steel structure;
s8, carrying out next treatment on the steel structure with qualified welding appearance, and carrying out defect repair and re-welding on the steel structure with unqualified welding;
s9, polishing an area needing to be detected by ultrasonic flaw detection;
s10, carrying out ultrasonic flaw detection on the butt welding point;
s11, carrying out the next working procedure on the steel structure after the ultrasonic flaw detection is qualified; repairing the defect of the unqualified steel structure;
s12, filling a formal report on the steel structure qualified in ultrasonic flaw detection;
and S13, carrying out procedure handover on the welded and qualified steel structure.
Further, when the welding rods are dried by the welding rod drying box in the S5, the drying temperature is 350-400 ℃, the drying time is 1-1.5 h, the welding rods are stored in an environment of 100-120 ℃ for standby application after being dried, the welding rods are immediately placed in a heat-insulating cylinder when being used, each welder is provided with one heat-insulating cylinder, the heat-insulating cylinder can not be opened at will when being used, the welding rods left in use and placed in the air on the same day can be used after being recycled, the repeated drying times of the welding rods cannot exceed 2 times, the splashing in the welding process can be reduced by drying the welding rods, and the welding arc can be stably combusted; preventing generation of pores in the weld; the generation of delayed cracks caused by hydrogen when welding certain low alloy steels is prevented.
Furthermore, the welding rod drying box comprises a frame body, an electric heating block is fixedly connected to the inner wall of the frame body, a motor box is fixedly connected to the top end of the frame body, an upper mounting disc and a lower mounting disc are arranged on the inner side of the motor box, the upper mounting disc is positioned on the right upper side of the lower mounting disc, a motor is fixedly connected to the inner wall of the motor box, the output end of the motor penetrates through the top end of the frame body and is rotatably connected with the top end of the frame body, the output end of the motor is fixedly connected with the top surface of the upper mounting disc, a shaft lever is rotatably connected to the inner wall of the bottom end of the frame body, the top end of the shaft lever is fixedly connected with the bottom surface of the lower mounting disc, a plurality of support rods distributed in an annular array are fixedly connected between the upper mounting disc and the lower mounting disc, a plurality of leakage grooves are formed between the inner wall and the outer wall of the support rods, welding rods are placed on the inner side of the leakage grooves, a plurality of through holes which are symmetrically arranged are respectively arranged between the upper surface and the lower surface of the upper mounting disc and the lower mounting disc, the number of the through holes is matched with the number of the supporting rods, the through holes on the upper mounting disc and the lower mounting disc are positioned at the inner sides of the supporting rods, a plurality of feed chutes which are matched with the supporting rods are arranged between the upper surface and the lower surface of the top end of the frame body, a plurality of second top plates are hinged on the inner wall of the top end of the frame body, the number of the second top plates is matched with the number of the feed chutes, the second top plates are positioned at the right lower side of the feed chutes, a plurality of mounting plates which are matched with the supporting rods are fixedly connected with the bottom surface of the lower mounting disc, the mounting plates are positioned at the lower side of the supporting rods, rotating rods are rotatably connected with the side walls of the mounting plates, first top plates are fixedly connected with the outer walls of the rotating rods, first magnetic blocks are fixedly connected with the side walls of one sides of the first top plates, a discharge chute is arranged between the upper surface and the lower surface of the bottom end of the frame body, the blown down tank is located the positive downside of a bracing piece, the downside of framework is provided with a heat preservation section of thick bamboo, the open end joint of a heat preservation section of thick bamboo is in the inboard of blown down tank, the top surface fixedly connected with third magnetic path of heat preservation section of thick bamboo open end compares with traditional welding rod stoving case, has avoided a plurality of welding rods to pile up together and has appeared drying inhomogeneous condition emergence, pegs graft the inboard at the blown down tank with a heat preservation section of thick bamboo when taking out the welding rod after the stoving, the welding rod after the stoving can drop to the inboard of a heat preservation section of thick bamboo automatically, has avoided opening the framework and has caused the thermal loss in the framework, and reduces in external moist air admission framework and the heat preservation section of thick bamboo as far as possible, further promotion the stoving effect of welding rod and the result of use of heat preservation bucket.
Furthermore, the top surface of the third magnetic block and the side surface of one side of the first magnetic block are mutually attracted, when the dried welding rods are required to be taken out, the open end of the heat-insulating cylinder is connected in the discharge chute in a clamping mode, and at the moment, the third magnetic block can attract the first magnetic block to enable the welding rods in the supporting rod to enter the heat-insulating cylinder from the supporting rod.
Further, fixedly connected with riser on the inner wall of framework bottom, the riser is located one side of blown down tank, fixedly connected with second magnetic path on the lateral wall of riser, the lateral wall of second magnetic path one side and the lateral wall of first magnetic path one side inhale mutually, suction between second magnetic path and the first magnetic path is greater than the interior suction between third magnetic path and the first magnetic path, and when the third magnetic path is inhaled first roof, in order to open first roof completely, can be further through the second magnetic path produce further suction to first magnetic path for first roof can be opened completely, has avoided first roof not opened completely and has influenced the normal of welding rod and dropped.
Furthermore, fixedly connected with baffle on the lateral wall that first roof is close to first magnetic path, first roof all sets up to magnetic isolation material with the baffle, has avoided first magnetic path to receive the interference influence normal motion of first roof of third magnetic path and second magnetic path simultaneously through setting up of baffle and first roof.
Further, torsion springs are respectively arranged between a second top plate hinged to the frame body and the first top plate and between the second top plate and the rotating rod, specifically, the torsion springs can enable the second top plate and the first top plate to generate anticlockwise force, and the second top plate and the first top plate can respectively seal the feeding groove and the supporting rod in a natural state through the arrangement of the torsion springs, namely, the second top plate prevents heat in the frame body from diffusing outwards through the feeding groove; the first top plate supports the welding rods dried in the supporting rod.
Furthermore, the outside of framework is provided with temperature control device, temperature control device is connected with the electrical heating piece electricity, through temperature control device's setting, after waiting for the welding rod stoving in the framework, with the temperature of electrical heating piece to the temperature under the heat preservation state in order to be ready for the collar of welding rod.
Furthermore, the open end threaded connection of a heat preservation section of thick bamboo has sealed lid, the open end of a heat preservation section of thick bamboo is located the edge of a heat preservation section of thick bamboo, through the setting of sealed lid, has avoided a heat preservation section of thick bamboo external air to enter into a heat preservation section of thick bamboo when using and has caused the influence to the welding rod, makes more convenient when taking the welding rod through the setting to a heat preservation section of thick bamboo.
Furthermore, when the steel structure is subjected to positioning welding, root backing welding, filling welding and surface layer welding, the welding current, the voltage, the welding clearance, the interlayer temperature, the gas flow, the pressure, the purity, the wire feeding speed, the welding bead width and the welding speed need to be checked, and the occurrence of accidents in the welding process can be avoided.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) This scheme is provided with the welding rod stoving case that cooperation technology used, it can dry the welding rod that needs to use when welding, and use a heat preservation section of thick bamboo to keep warm to the welding rod after drying after the welding rod is dried, separate wet, the inside of having avoided welding rod behind the welding rod of leading gets into moisture influence welding effect, compared with the prior art, a plurality of welding rods are arranged in and are dried in the independent bracing piece, it piles up to appear drying inhomogeneous condition together and takes place to have avoided the welding rod, and peg graft the inboard at the blown down tank with a heat preservation section of thick bamboo when taking out the welding rod after drying, the welding rod after the stoving can drop to the inboard of a heat preservation section of thick bamboo automatically, avoided opening the framework when taking out the welding rod and caused the loss of heat in the framework, and reduce in external moist air admission framework and the heat preservation section of thick bamboo as far as possible, further promotion the stoving effect of welding rod and the result of use of heat preservation bucket.
(2) S5, when the welding rods are dried through a welding rod drying box, the drying temperature is 350-400 ℃, the drying time is 1-1.5 h, the welding rods are stored in an environment of 100-120 ℃ after being dried for being used, the welding rods are required to be placed in a heat-insulating cylinder immediately when being used, each welder is provided with one heat-insulating cylinder, the welder can take the welding rods at any time, the heat-insulating cylinder cannot open a cover at any time during use, the recovered drying method can be used for the welding rods left in the air on the same day, the repeated drying frequency of the welding rods cannot exceed 2 times, the splashing in the welding process can be reduced by drying the welding rods, and the welding arc can be stably combusted; preventing the generation of pores in the weld; the generation of delayed cracks caused by hydrogen when welding certain low alloy steels is prevented.
(3) The welding rod drying box comprises a frame body, an electric heating block is fixedly connected to the inner wall of the frame body, a motor box is fixedly connected to the top end of the frame body, an upper mounting disc and a lower mounting disc are arranged on the inner side of the motor box, the upper mounting disc is positioned right above the lower mounting disc, a motor is fixedly connected to the inner wall of the motor box, the output end of the motor penetrates through the top end of the frame body and is rotatably connected with the top end of the frame body, the output end of the motor is fixedly connected with the top surface of the upper mounting disc, a shaft rod is rotatably connected to the inner wall of the bottom end of the frame body, the top end of the shaft rod is fixedly connected with the bottom surface of the lower mounting disc, a plurality of support rods distributed in an annular array are fixedly connected between the upper mounting disc and the lower mounting disc, a plurality of leakage grooves are formed between the inner wall and the outer wall of the support rods, welding rods are placed on the inner side of the leakage grooves, and a plurality of through holes which are symmetrically arranged are formed between the upper surface and the lower surface of the upper mounting disc and the lower mounting disc, the number of the through holes is matched with the number of the supporting rods, the through holes on the upper mounting plate and the lower mounting plate are positioned on the inner side of the supporting rods, a plurality of feeding grooves matched with the supporting rods are formed between the upper surface and the lower surface of the top end of the frame body, a plurality of second top plates are hinged on the inner wall of the top end of the frame body, the number of the second top plates is matched with that of the feeding grooves, the second top plates are positioned on the right lower side of the feeding grooves, a plurality of mounting plates matched with the supporting rods are fixedly connected to the bottom surface of the lower mounting plate, the mounting plates are positioned on the lower side of the supporting rods, rotating rods are rotatably connected to the side walls of the mounting plates, first top plates are fixedly connected to the outer walls of the rotating rods, first magnetic blocks are fixedly connected to the side walls of one sides of the first top plates, a discharge chute is formed between the upper surface and the lower surface of the bottom end of the frame body, a heat-insulating cylinder is arranged on the lower side of the supporting rods, the opening end of the heat-insulating cylinder is clamped on the inner side of the discharge chute, the top surface fixedly connected with third magnetic path of heat preservation section of thick bamboo open end, compare with traditional welding rod stoving case, avoided a plurality of welding rods to pile up and appear drying inhomogeneous condition together and take place, peg graft the heat preservation section of thick bamboo in the inboard of blown down tank when taking out the welding rod after the stoving, the welding rod after the stoving can drop to the inboard of heat preservation section of thick bamboo automatically, avoided needing to open the framework and caused the thermal loss in the framework, and reduce in external moist air admission framework and the heat preservation section of thick bamboo as far as possible, further promotion the stoving effect of welding rod and the result of use of heat preservation bucket.
(4) The top surface of the third magnetic block and the side surface of one side of the first magnetic block attract each other, when welding rods after drying are required to be taken out, the open end of the heat preservation cylinder is connected into the discharge chute in a clamped mode, and at the moment, the third magnetic block can attract the first magnetic block to enable the welding rods in the support rod to enter the heat preservation cylinder from the support rod.
(5) Fixedly connected with riser on the inner wall of framework bottom, the riser is located one side of blown down tank, fixedly connected with second magnetic path on the lateral wall of riser, the lateral wall of second magnetic path one side and the lateral wall of first magnetic path one side are inhaled mutually, suction between second magnetic path and the first magnetic path is greater than the interior suction between third magnetic path and the first magnetic path, when the third magnetic path is with first roof down-suction, in order to open first roof completely, can be further produce further suction to first magnetic path through the second magnetic path, make first roof can be opened completely, avoided first roof not opened the normal of influence welding rod completely and dropped.
(6) Fixedly connected with baffle on the lateral wall that first roof is close to first magnetic path, first roof all sets up to separating magnetic material with the baffle, has avoided first magnetic path to receive the interference influence normal motion of first roof of third magnetic path and second magnetic path simultaneously through setting up of baffle and first roof.
(7) Torsion springs are respectively arranged between the second top plate hinged to the frame body and the first top plate and between the second top plate and the rotating rod, specifically, the torsion springs can enable the second top plate and the first top plate to generate anticlockwise force, and the second top plate and the first top plate can respectively seal the feeding groove and the supporting rod in a natural state through the arrangement of the torsion springs, namely, the second top plate prevents heat in the frame body from diffusing outwards through the feeding groove; the first top plate supports the welding rods dried in the supporting rod.
(8) The temperature control device is arranged on the outer side of the frame body and electrically connected with the electric heating block, and the temperature of the electric heating block is adjusted to the temperature in the heat preservation state after the welding rods in the frame body are dried through the temperature control device so as to be ready for the welding rods to be received.
(9) The open end threaded connection of a heat preservation section of thick bamboo has sealed lid, and the open end of a heat preservation section of thick bamboo is located the edge of a heat preservation section of thick bamboo, through the setting of sealed lid, has avoided a heat preservation section of thick bamboo external air to enter into a heat preservation section of thick bamboo when using and has caused the influence to the welding rod, makes more convenient when taking the welding rod through the setting to a heat preservation section of thick bamboo.
(10) In the welding processes of positioning welding, root backing welding, filling welding, surface layer welding and the like, the welding current, voltage, welding cleaning, interlayer temperature, gas flow, pressure, purity, wire feeding speed, welding bead width and welding speed need to be checked, and the occurrence of accidents in the welding process can be avoided.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic view of the connection structure of the frame body and the heat-insulating cylinder according to the present invention;
FIG. 3 is a schematic view of the front cross-sectional structure of the frame of the present invention;
FIG. 4 is a schematic structural view of a front cross section of the frame body and the heat-insulating cylinder when the frame body and the heat-insulating cylinder are connected;
FIG. 5 is an enlarged schematic view of the invention at A;
FIG. 6 is a schematic perspective view of the open end of the thermal insulation cylinder according to the present invention.
The reference numbers in the figures illustrate:
1. a frame body; 2. a motor case; 3. mounting a disc; 4. a lower mounting plate; 5. a shaft lever; 6. a motor; 7. A support bar; 8. a leak groove; 9. an electrical heating block; 10. a heat-preserving cylinder; 11. mounting a plate; 12. a first top plate; 13. a first magnetic block; 14. a vertical plate; 15. a second magnetic block; 16. a partition plate; 17. a third magnetic block; 18. A discharge chute; 19. a feed chute; 20. a second top panel.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1, a steel structure on-site welding process includes the following steps:
s1, checking before welding;
s2, cleaning the groove after the inspection is finished;
s3, checking the lining plate, the arc striking plate and extinguishing the arc;
s4, preheating the steel structure;
s5, drying the welding rods through a welding rod drying box, and sequentially carrying out positioning welding, root backing welding, filling welding and surface layer welding on the steel structure by using the dried welding rods;
s6, performing post heat treatment on the welded steel structure, and then performing heat preservation;
s7, checking the welding appearance of the steel structure;
s8, carrying out next treatment on the steel structure with qualified welding appearance, and carrying out defect repair and re-welding on the steel structure with unqualified welding;
s9, polishing an area needing to be detected by ultrasonic flaw detection;
s10, carrying out ultrasonic flaw detection on the welding point;
s11, carrying out the next process on the steel structure after the ultrasonic flaw detection is qualified; repairing the defect of the unqualified steel structure;
s12, filling a formal report on the steel structure qualified in ultrasonic flaw detection;
and S13, performing procedure handover on the welded and qualified steel structure.
Referring to fig. 1 and fig. 2, when the welding rod is dried by the welding rod drying box in S5, the drying temperature is 350-400 ℃, the drying time is 1-1.5 h, the welding rod is stored in an environment of 100-120 ℃ for standby after being dried, the welding rod should be immediately placed in a heat-insulating cylinder 10 when being used, each welder is provided with one heat-insulating cylinder 10, the welder can be taken at any time, the heat-insulating cylinder 10 cannot open a cover at will when in use, the welder can be used after being recovered for the welding rod left in the air and used in the day, the number of times of repeated drying of the welding rod cannot exceed 2, the splashing in the welding process can be reduced by drying the welding rod, and the welding arc can be stably combusted; preventing generation of pores in the weld; the generation of delayed cracks caused by hydrogen when welding certain low alloy steels is prevented.
Referring to fig. 2-6, the welding rod drying box includes a frame body 1, an electric heating block 9 is fixedly connected to the inner wall of the frame body 1, a motor box 2 is fixedly connected to the top end of the frame body 1, an upper mounting plate 3 and a lower mounting plate 4 are arranged on the inner side of the motor box 2, the upper mounting plate 3 is located right above the lower mounting plate 4, a motor 6 is fixedly connected to the inner wall of the motor box 2, the output end of the motor 6 penetrates through the top end of the frame body 1 and is rotatably connected with the top end of the frame body 1, the output end of the motor 6 is fixedly connected with the top surface of the upper mounting plate 3, a shaft rod 5 is rotatably connected to the inner wall of the bottom end of the frame body 1, the top end of the shaft rod 5 is fixedly connected with the bottom surface of the lower mounting plate 4, a plurality of support rods 7 distributed in an annular array are fixedly connected between the upper mounting plate 3 and the lower mounting plate 4, a plurality of leakage grooves 8 are formed between the inner and outer walls of the support rods 7, welding rods are placed on the inner side of the leakage grooves 8, a plurality of the upper mounting plate 3 and lower mounting plate 4, a plurality of through holes are symmetrically formed between the top surface of the top plate 7 and the top plate 12, a plurality of top plate 12 is connected with a plurality of a top plate 12 formed on the top plate 7, a plurality of top plate 7 and a top plate 12 connected with a plurality of a top plate 12 connected with a plurality of a top plate 7, specifically, the torsion spring can make the second top plate 20 and the first top plate 12 generate a counterclockwise force, and the second top plate 20 and the first top plate 12 can respectively seal the feed chute 19 and the support rod 7 in a natural state through the arrangement of the torsion spring, that is, the second top plate 20 prevents heat in the frame body 1 from diffusing outward through the feed chute 19; the first top plate 12 supports welding rods dried in the supporting rod 7, a first magnetic block 13 is fixedly connected to the side wall of one side of the first top plate 12, a discharge groove 18 is formed between the upper surface and the lower surface of the bottom end of the frame body 1, the discharge groove 18 is positioned right below one supporting rod 7, a heat preservation cylinder 10 is arranged below the frame body 1, the open end of the heat preservation cylinder 10 is clamped at the inner side of the discharge groove 18, a third magnetic block 17 is fixedly connected to the top surface of the open end of the heat preservation cylinder 10, the top surface of the third magnetic block 17 is attracted to the side surface of one side of the first magnetic block 13, when the dried welding rods need to be taken out, the open end of the heat preservation cylinder 10 is clamped in the discharge groove 18, at the moment, the third magnetic block 17 and the first magnetic block 13 can be attracted by the third magnetic block 17, so that the welding rods in the supporting rod 7 enter the heat preservation cylinder 10 from the supporting rod 7, a vertical plate 14 is fixedly connected to the inner wall of the bottom end of the frame body 1, and the vertical plate 14 is positioned at one side of the discharge groove 18, fixedly connected with second magnetic block 15 on the lateral wall of riser 14, the lateral wall of second magnetic block 15 one side is inhaled with the lateral wall of first magnetic block 13 one side mutually, the suction between second magnetic block 15 and the first magnetic block 13 is greater than the suction in between third magnetic block 17 and the first magnetic block 13, when third magnetic block 17 is with first roof 12 down, in order to open first roof 12 completely, can further produce further suction to first magnetic block 13 through second magnetic block 15, make first roof 12 can be opened completely, first roof 12 has been avoided not being opened completely and has influenced the normal of welding rod and drop, fixedly connected with baffle 16 on the lateral wall that first roof 12 is close to first magnetic block 13, first roof 12 all sets up to magnetic isolation material with baffle 16, the setting up through baffle 16 and first roof 12 has avoided first magnetic block 13 to receive the interference influence normal of first roof 12 of third magnetic block 17 and second magnetic block 15 simultaneously The motion, the outside of framework 1 is provided with temperature control device, temperature control device is connected with electric heating block 9 electricity, setting through temperature control device, wait for the welding rod in framework 1 to dry the back and transfer the temperature of electric heating block 9 to the temperature under the heat preservation state in order to be ready for the reception of welding rod, the open end threaded connection of a heat preservation section of thick bamboo 10 has sealed lid, the open end of a heat preservation section of thick bamboo 10 is located the edge of a heat preservation section of thick bamboo 10, setting through sealed lid, avoided a heat preservation section of thick bamboo 10 when using external air to enter into a heat preservation section of thick bamboo 10 in causing the influence to the welding rod, it is more convenient when taking the welding rod to make through the setting to a heat preservation section of thick bamboo 10.
Referring to fig. 1, during the welding processes such as tack welding, root backing welding, filling welding, surface layer welding, etc., the welding current, voltage, welding clearance, interlayer temperature, gas flow, pressure, purity, wire feeding speed, weld bead width, and welding speed need to be checked, so as to avoid the occurrence of accidents during the welding process.
The welding rod drying box is provided with the welding rod drying box used in cooperation with the process, the welding rod drying box can be used for drying a welding rod required in welding, the heat preservation and moisture insulation can be carried out on the dried welding rod by using the heat preservation cylinder after the welding rod is dried, the phenomenon that the welding rod is accumulated together to cause uneven drying is avoided, the heat preservation cylinder is inserted into the inner side of the discharge chute when the dried welding rod is taken out, the dried welding rod can automatically fall to the inner side of the heat preservation cylinder, the heat loss in the frame due to the fact that the frame is opened when the welding rod is taken out is avoided, the fact that external moist air enters the frame and the heat preservation cylinder is reduced as far as possible, and the drying effect of the frame and the using effect of the heat preservation cylinder are further improved.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (7)
1. The steel structure on-site welding process is characterized in that: the method comprises the following steps:
s1, checking before welding;
s2, cleaning the groove after the inspection is finished;
s3, checking the lining plate, the arc striking plate and extinguishing the arc;
s4, preheating the steel structure;
s5, drying the welding rods through a welding rod drying box, and sequentially carrying out positioning welding, root backing welding, filling welding and surface layer welding on the steel structure by using the dried welding rods;
s6, performing post heat treatment on the welded steel structure, and then performing heat preservation;
s7, checking the welding appearance of the steel structure;
s8, carrying out next treatment on the steel structure with qualified welding appearance, and carrying out defect repair and re-welding on the steel structure with unqualified welding;
s9, polishing an area needing to be detected by ultrasonic flaw detection;
s10, carrying out ultrasonic flaw detection on the butt welding point;
s11, carrying out the next process on the steel structure after the ultrasonic flaw detection is qualified; repairing the defect of the unqualified steel structure;
s12, filling a formal report on the steel structure qualified in ultrasonic flaw detection;
s13, performing procedure handover on the welded and qualified steel structure;
the welding rod drying box comprises a frame body (1), an electric heating block (9) is fixedly connected to the inner wall of the frame body (1), a motor box (2) is fixedly connected to the top end of the frame body (1), an upper mounting disc (3) and a lower mounting disc (4) are arranged on the inner side of the motor box (2), the upper mounting disc (3) is located on the right upper side of the lower mounting disc (4), a motor (6) is fixedly connected to the inner wall of the motor box (2), the output end of the motor (6) penetrates through the top end of the frame body (1) and is rotatably connected with the top end of the frame body, the output end of the motor (6) is fixedly connected with the top surface of the upper mounting disc (3), and a shaft lever (5) is rotatably connected to the inner wall of the bottom end of the frame body (1), the top end of the shaft lever (5) is fixedly connected with the bottom surface of the lower mounting disc (4), a plurality of supporting rods (7) distributed in an annular array are fixedly connected between the upper mounting disc (3) and the lower mounting disc (4), a plurality of leakage grooves (8) are formed between the inner wall and the outer wall of each supporting rod (7), welding rods are placed on the inner sides of the leakage grooves (8), a plurality of through holes which are symmetrically arranged are formed between the upper surface and the lower surface of the upper mounting disc (3) and the lower surface of the lower mounting disc (4), the number of the through holes is matched with the number of the supporting rods (7), and the through holes on the upper mounting disc (3) and the lower mounting disc (4) are positioned on the inner sides of the supporting rods (7), a plurality of feeding grooves (19) matched with the supporting rods (7) are formed between the upper surface and the lower surface of the top end of the frame body (1), a plurality of second top plates (20) are hinged on the inner wall of the top end of the frame body (1), the number of the second top plates (20) is matched with that of the feeding grooves (19), the second top plates (20) are positioned at the lower side of the feeding grooves (19), the bottom surface of the lower mounting plate (4) is fixedly connected with a plurality of mounting plates (11) matched with the supporting rods (7), the mounting plates (11) are positioned at the lower side of the supporting rods (7), the side walls of the mounting plates (11) are rotatably connected with rotating rods, the outer walls of the rotating rods are fixedly connected with first top plates (12), the side wall of one side of the first top plates (12) is fixedly connected with first magnetic blocks (13), a discharging groove (18) is formed between the upper surface and the lower surface of the bottom end of the frame body (1), the discharging groove (18) is positioned at the lower side of one supporting rod (7), a heat-insulating cylinder (10) is arranged at the lower side of the bottom end of the frame body (1), the heat-insulating cylinder (10) is fixedly connected with a third magnetic block (14) which is fixedly connected with an opening end of the inner wall of the heat-insulating cylinder (14), fixedly connected with second magnetic path (15) on the lateral wall of riser (14), the lateral wall of second magnetic path (15) one side and the lateral wall of first magnetic path (13) one side are inhaled mutually, suction between second magnetic path (15) and first magnetic path (13) is greater than the interior suction between third magnetic path (17) and first magnetic path (13), fixedly connected with baffle (16) on first roof (12) is close to the lateral wall of first magnetic path (13), first roof (12) and baffle (16) all set up to separate magnetic material.
2. The steel structure field welding process according to claim 1, characterized in that: and in the S5, when the welding rods are dried by the welding rod drying box, the drying temperature is 350-400 ℃, the drying time is 1-1.5 h, and the welding rods are stored in an environment of 100-120 ℃ after being dried for being ready to be received.
3. The steel structure field welding process according to claim 1, characterized in that: the top surface of the third magnetic block (17) is attracted with the side surface of one side of the first magnetic block (13).
4. The steel structure field welding process according to claim 1, characterized in that: and torsion springs are respectively arranged between the second top plate (20) hinged on the frame body (1) and the first top plate (12) and the rotating rod.
5. The steel structure field welding process according to claim 1, characterized in that: the outer side of the frame body (1) is provided with a temperature control device which is electrically connected with the electric heating block (9).
6. The steel structure field welding process according to claim 1, characterized in that: the opening end of the heat-preserving cylinder (10) is in threaded connection with a sealing cover, and the opening end of the heat-preserving cylinder (10) is located on the edge of the heat-preserving cylinder (10).
7. The steel structure field welding process according to claim 1, characterized in that: and in S5, when the steel structure is subjected to tack welding, root backing welding, filling welding and surface layer welding, the welding current, voltage, welding cleaning, interlayer temperature, gas flow, pressure, purity, wire feeding speed, weld bead width and welding speed need to be checked.
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