CN113070547A - Steel structure on-site welding process - Google Patents
Steel structure on-site welding process Download PDFInfo
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- CN113070547A CN113070547A CN202110416713.6A CN202110416713A CN113070547A CN 113070547 A CN113070547 A CN 113070547A CN 202110416713 A CN202110416713 A CN 202110416713A CN 113070547 A CN113070547 A CN 113070547A
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- steel structure
- frame body
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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
-
- 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
-
- 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 on-site 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, the phenomenon that the welding rod enters the interior of the welding rod after being received and used to influence the welding effect is avoided, compared with the prior art, a plurality of welding rods are arranged in independent supporting rods for drying, the phenomenon that the welding rods are accumulated together and are not uniformly dried is avoided, the heat preservation cylinder is inserted into the inner side of a discharge chute when the dried welding rod is taken out, the dried welding rod can automatically fall off to the inner side of the heat preservation cylinder, the loss of heat in a frame body caused by opening the frame body when the welding rod is taken out is avoided, and the external moist air can be, further, the drying effect of the welding rods and the using effect of the heat-preserving barrel are improved.
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
Aiming at the problems in the prior art, 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 the welding rods needed in welding, and uses a heat-insulating cylinder to insulate and insulate the heat of the dried welding rods after the welding rods are dried, thereby avoiding the influence of moisture on the welding effect caused by the entering of water into the welding rods after the welding rods are received, compared with the prior art, a plurality of welding rods are arranged in independent support rods to be dried, thereby avoiding the occurrence of uneven drying when the welding rods are piled together, the heat-insulating cylinder is inserted into the inner side of a discharge chute when the dried welding rods are taken out, the dried welding rods can automatically fall off to the inner side of the heat-insulating cylinder, avoiding the loss of heat in the frame body caused by opening the frame body when the welding rods are taken out, and reducing the entering of external moist air into the frame body and the heat-insulating cylinder as much as, further, the drying effect of the welding rods and the using effect of the heat-preserving barrel are improved.
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 a lining plate, an arc striking plate and arc extinguishing;
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, inspecting the welding appearance of the steel structure;
s8, performing the next step of processing on the steel structure with qualified welding appearance, and performing defect repair and re-welding on the steel structure with unqualified welding;
s9, grinding 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 by ultrasonic flaw detection;
and S13, performing 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 be taken at any time when used, the cover of the heat-insulating cylinder can not be opened at any time when used, the welding rods left and placed in the air when used in the same day can be used after being recovered, the repeated drying frequency of the welding rods can not 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.
Further, 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, the number of the through holes is matched with that of the supporting rods, the through holes on the upper mounting plate and the lower mounting plate are positioned at the inner sides 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 at 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 at 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 and fixedly connected to the side walls of one side of the first top plates, discharge chutes are formed, 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 a 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 and take place, peg 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, avoided opening the framework and caused the loss of heat in the framework, and reduce in external moist air admission framework and a heat preservation section of thick bamboo as far as possible, further promotion the stoving effect of welding rod and the result of.
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 are inhaled mutually, suction between second magnetic path and the first magnetic path is greater than the 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 produce further suction to first magnetic path through the second magnetic path for first roof can be opened completely, has avoided first roof not opened the normal that influences the welding rod completely and has 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.
Further, 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) the proposal is provided with a welding rod drying box which is used in cooperation with the process and can dry the welding rods needed in welding, and the heat preservation cylinder is used for preserving heat and insulating moisture of the dried welding rods after the welding rods are dried, thereby avoiding the influence on the welding effect caused by the moisture entering the interior of the welding rods after the welding rods are used, compared with the prior art, a plurality of welding rods are arranged in the independent supporting rods for drying, the condition that the welding rods are accumulated together and the drying is not uniform 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 off to the inner side of the heat preservation cylinder, the heat loss in the frame body caused by opening the frame body when the welding rod is taken out is avoided, and the air that reduces external moisture as far as possible gets into in framework and the heat-preserving container, further the stoving effect of having promoted the welding rod and the result of use of heat-preserving container.
(2) When the welding rods are dried through the welding rod drying box in 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 ℃ 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 heat-insulating cylinder can not be opened at will when being used, the recovered drying method can be used for the welding rods left in the air on the same day, 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 the generation of pores in the weld; the generation of delayed cracks caused by hydrogen when welding certain low alloy steels is prevented.
(3) Welding rod stoving case includes the framework, fixedly connected with electrical heating piece on the inner wall of framework, the top fixedly connected with motor case of framework, the inboard of motor case is provided with mounting disc and lower mounting disc, it is located the lower side directly of mounting disc to go up the mounting disc, fixedly connected with motor on the inner wall of motor case, the output of motor runs through the top of framework and rotates with it and be connected, the output of motor and the top surface fixed connection of last mounting disc, it is connected with the axostylus axostyle to rotate on the inner wall of framework bottom, the top of axostylus axostyle and the bottom surface fixed connection of lower mounting disc, go up the bracing piece that a plurality of annular array of fixedly connected with distribute between mounting disc and the lower mounting disc, a plurality of small openings have been seted up between the inside and the outside wall of bracing piece, the welding rod has been placed to the inboard of small opening, all set up the through-hole that a plurality of through-holes set up with the quantity phase-match The inner side of the frame body, a plurality of feed chutes matched with the support 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 that of the feed chutes, the second top plates are positioned under the feed chutes, a plurality of mounting plates matched with the support rods are fixedly connected with the bottom surface of the lower mounting plate, the mounting plates are positioned under the support rods, rotating rods are rotatably connected on the side walls of the mounting plates, first top plates are fixedly connected on the outer walls of the rotating rods, first magnetic blocks are fixedly connected on 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 discharge chute is positioned under one support rod, a heat-preserving cylinder is arranged under the frame body, the opening end of the, avoided a plurality of welding rods to pile up the inhomogeneous condition of appearance stoving together and taken place, pegged 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 a heat preservation section of thick bamboo automatically, has avoided opening the framework and has caused the thermal loss in the framework, and reduces external moist air as far as possible and gets into in framework and the heat preservation section of thick bamboo, further promotion the stoving effect of welding rod and the result of use of heat-preserving container.
(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 a 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. an upper mounting plate; 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" and "second" 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 a lining plate, an arc striking plate and arc extinguishing;
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, inspecting the welding appearance of the steel structure;
s8, performing the next step of processing on the steel structure with qualified welding appearance, and performing defect repair and re-welding on the steel structure with unqualified welding;
s9, grinding 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 by ultrasonic flaw detection;
and S13, performing procedure handover on the welded and qualified steel structure.
Referring to fig. 1 and 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 future use after being dried, the welding rod is immediately placed in a heat-insulating cylinder 10 when being used, each welder is provided with one heat-insulating cylinder 10, the heat-insulating cylinder 10 can not be opened at will when being used, the welding rod left in use and placed in the air on the same day can be used by a drying party after being recovered, 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 the 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 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 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 positioned 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, the output end of the motor 6 is fixedly connected with the top surface of the upper mounting plate 3, 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 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, the number of the through holes is matched with that of the support rods 7, the through holes on the upper mounting plate 3 and the lower mounting plate 4 are all positioned on the inner side of the support rods 7, a plurality of feed chutes 19 matched with the support 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 feed chutes 19, the second top plates 20 are positioned under the feed chutes 19, the bottom surface of the lower mounting plate 4 is fixedly connected with a plurality of mounting plates 11 matched with the support rods 7, the mounting plates 11 are positioned under the support 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, torsion springs are respectively arranged between the second top plates 20 hinged on the frame body 1 and the first top plates 12 and the rotating rods, and specifically, the, through the arrangement of the torsion spring, 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, namely the second top plate 20 prevents heat in the frame body 1 from diffusing outwards through the feed chute 19; the first top plate 12 supports the welding rods dried in the supporting rod 7, a first magnetic block 13 is fixedly and fixedly connected to the side wall of one side of the first top plate 12, a discharge chute 18 is formed between the upper surface and the lower surface of the bottom end of the frame body 1, the discharge chute 18 is positioned right below one supporting rod 7, a heat-insulating cylinder 10 is arranged on the lower side of the frame body 1, the open end of the heat-insulating cylinder 10 is clamped at the inner side of the discharge chute 18, a third magnetic block 17 is fixedly connected to the top surface of the open end of the heat-insulating 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-insulating cylinder 10 is clamped in the discharge chute 18, at the moment, the third magnetic block 17 and the first magnetic block 13 are arranged, so that the welding rods in the supporting rod 7 can enter the heat-insulating cylinder 10 from the supporting rod, the vertical plate 14 is located on one side of the discharging groove 18, the second magnetic block 15 is fixedly connected to the side wall of the vertical plate 14, the side wall of one side of the second magnetic block 15 is attracted to the side wall of one side of the first magnetic block 13, the attraction force between the second magnetic block 15 and the first magnetic block 13 is larger than the attraction force between the third magnetic block 17 and the first magnetic block 13, when the first top plate 12 is attracted by the third magnetic block 17, in order to completely open the first top plate 12, the first magnetic block 13 can further generate further attraction force through the second magnetic block 15, so that the first top plate 12 can be completely opened, the situation that the welding rod is normally dropped due to the fact that the first top plate 12 is not completely opened is avoided, the partition plate 16 is fixedly connected to the side wall of the first top plate 12 close to the first magnetic block 13, the first top plate 12 and the partition plate 16 are both made of magnetic isolation materials, and the arrangement of the partition plate 16 and the first top plate 12 avoids the situation that the first magnetic block 13 is simultaneously interfered by the third magnetic block 17 and, 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 use 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 the influence is caused to the welding rod, it is more convenient when taking the welding rod to make through.
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 (10)
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 a lining plate, an arc striking plate and arc extinguishing;
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, inspecting the welding appearance of the steel structure;
s8, performing the next step of processing on the steel structure with qualified welding appearance, and performing defect repair and re-welding on the steel structure with unqualified welding;
s9, grinding 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 by ultrasonic flaw detection;
and S13, performing procedure handover on the welded and qualified steel structure.
2. The steel structure field welding process according to claim 1, characterized in that: when the welding rods are dried through the welding rod drying box in the S5, 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 standby application.
3. The steel structure field welding process according to claim 1, characterized in that: 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), 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), and a plurality of supporting rods (7) distributed in an annular array are fixedly, a plurality of leakage grooves (8) are formed between the inner wall and the outer wall of the supporting rod (7), welding rods are placed on the inner side of each leakage groove (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 mounting disc (4), the number of the through holes is matched with that of the supporting rods (7), the through holes in the upper mounting disc (3) and the lower mounting disc (4) are located on the inner side 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 to the inner wall of the top end of the frame body (1), the second top plates (20) are matched with that of the feeding grooves (19), the second top plates (20) are located on the lower side of the feeding grooves (19), and a plurality of mounting plates (11) matched with the supporting rods (7) are fixedly connected to the, mounting panel (11) are located the downside of bracing piece (7), it is connected with the bull stick to rotate on the lateral wall of mounting panel (11), the first roof of fixedly connected with (12) on the outer wall of bull stick, the first magnetic path of fixedly connected with (13) on the lateral wall of first roof (12) one side, blown down tank (18) have been seted up between the upper and lower face of framework (1) bottom, blown down tank (18) are located the positive downside of a bracing piece (7), the downside of framework (1) is provided with heat preservation section of thick bamboo (10), the open end joint of heat preservation section of thick bamboo (10) is in the inboard of blown down tank (18), the top surface fixedly connected with third magnetic path (17) of heat preservation section of thick bamboo (10) open end.
4. The steel structure field welding process according to claim 3, 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).
5. The steel structure field welding process according to claim 3, characterized in that: fixedly connected with riser (14) on the inner wall of framework (1) bottom, riser (14) are located one side of blown down tank (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 and the lateral wall of first magnetic block (13) one side attract each other, suction between second magnetic block (15) and first magnetic block (13) is greater than the suction in between third magnetic block (17) and first magnetic block (13).
6. The steel structure field welding process according to claim 3, characterized in that: the side wall of the first top plate (12) close to the first magnetic block (13) is fixedly connected with a partition plate (16), and the first top plate (12) and the partition plate (16) are both made of magnetic isolation materials.
7. The steel structure field welding process according to claim 3, 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.
8. The steel structure field welding process according to claim 3, 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).
9. The steel structure field welding process according to claim 3, characterized in that: the opening end of the heat-insulating cylinder (10) is in threaded connection with a sealing cover, and the opening end of the heat-insulating cylinder (10) is located on the edge of the heat-insulating cylinder (10).
10. The steel structure field welding process according to claim 1, characterized in that: and in the step S5, when the steel structure is subjected to tack welding, root backing welding, filling welding and surface layer welding, 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.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114932287A (en) * | 2022-05-30 | 2022-08-23 | 中建海峡建设发展有限公司 | Welding method for building steel structure frame |
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