CN111250826A - Assembly tool structure and repair process for welding seam of bottom shell of electromagnetic chuck for lifting wheel steel ingot - Google Patents
Assembly tool structure and repair process for welding seam of bottom shell of electromagnetic chuck for lifting wheel steel ingot Download PDFInfo
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- CN111250826A CN111250826A CN202010235651.4A CN202010235651A CN111250826A CN 111250826 A CN111250826 A CN 111250826A CN 202010235651 A CN202010235651 A CN 202010235651A CN 111250826 A CN111250826 A CN 111250826A
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- 238000003466 welding Methods 0.000 title claims abstract description 186
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 52
- 239000010959 steel Substances 0.000 title claims abstract description 52
- 230000008439 repair process Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 42
- 230000007547 defect Effects 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 4
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- 238000005336 cracking Methods 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 3
- 230000008602 contraction Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/02—Seam welding; Backing means; Inserts
- B23K9/028—Seam welding; Backing means; Inserts for curved planar seams
-
- 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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- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention discloses a tooling structure and a repairing process for assembling welding seams of a bottom shell of an electromagnetic chuck for lifting steel ingots of wheels, wherein the tooling structure comprises a circular bottom shell and an upper cover panel welded on the bottom shell, a welding seam is formed at the junction of the bottom shell and the upper cover panel, a plurality of upper fixing devices are uniformly arranged on the upper surface of the upper cover panel, and each upper fixing device is connected with a lifting ring through a connecting chain; a plurality of hook head clamps are uniformly arranged on the bottom shell and the upper cover panel along the circumference; the hook head clamp comprises an コ -shaped hook head clamp body, the upper part and the lower part of the hook head clamp body are respectively a hook head upper clamping plate and a hook head lower clamping plate, and the distance between the hook head upper clamping plate and the hook head lower clamping plate is equal to the sum of the heights of the bottom shell and the upper cover panel; the upper clamping plate of the hook head is provided with a screw hole, and a full-thread bolt matched with the screw hole is arranged in the screw hole. The invention can weld and repair the crack of the upper and lower shells of the electromagnetic chuck on line, saves the maintenance time, reduces the maintenance cost, reduces the shutdown loss and provides guarantee for reasonable production.
Description
Technical Field
The invention belongs to the field of machinery, and particularly relates to a tooling structure for assembling welding seams of a bottom shell of an electromagnetic chuck for lifting steel ingots of wheels and a repairing process.
Background
The electromagnetic chuck is an electromagnetic clamp which fixes a processing workpiece through suction force generated by a chuck body after an electromagnetic coil is electrified. The electromagnetic chuck has: bottom shell, iron core, coil, panel, terminal box are constituteed. The coil is fixed around the iron core, the bottom shell is welded on the bottom surface of the iron core to form a circumferential weld between the bottom shell and the iron core and an outer circumferential weld 8 between the bottom shell and the panel cover which are integrally welded, the panel is welded on the iron core, and the junction box is connected and fixed on the panel to form an integral structural member electromagnetic chuck lifting device.
A wheel raw material rolling configuration process on each production line of wheels of a rail transport company for horse steel comprises the following steps: blank-inspection-sizing-cutting-steel ingot-electromagnetic chuck hoisting-heating-rolling. The required steel ingots of various specifications of production in batches every day through electromagnetic chuck according to the design process requirement naturally drop to the surface that the steel ingot contacted, the next process of rolling wheel is steadily hoisted to the suction of production, and electromagnetic chuck is fixed through iron core and disjunctor fixed welded drain pan suction when the steel ingot of handling bearing, because sometimes exists at actual stock ground handling work: 1. and the hoisting positions of part of steel ingots are deviated, and the electromagnetic chuck is required to complete the impact from the outer side of the bottom shell when hoisting the steel ingots with various wheels. 2. An operator can suddenly move up and down when operating the electromagnetic chuck to hoist various wheel steel ingots, so that the iron core with the suction force and the bottom shell fixedly welded in a connected mode can directly hit the contact surface of the wheel steel ingots. However, part and integral cracking and desoldering of the outside circumferential weld joint of the integrated welding of the bottom shell and the panel cover are caused along with the long-time lapse, if the part and the integral cracking and desoldering part of the weld joint of the outside circle of the bottom shell are not repaired in time, the main coil is damaged through the damaged and combined cracking part, the integral electromagnetic chuck is not provided with any suction force, the production is influenced, the new spare parts are directly replaced, the cost and the expense are high, the repair is carried to a manufacturer, the time is not short, and the assembly welding repair of the welding and desoldering part of the bottom shell needs to be carried out on site for recovering the production as soon as possible. Therefore, a simple tool and a welding process for assembling the welding seams of the upper and lower shells of the electromagnetic chuck for hoisting the wheel steel ingots are needed to be designed. In addition, the simple tool and the welding process set do not influence the hoisting of the steel ingot of the wheel and the generation of various substandard performances of internal tissues of the welded electromagnetic chuck, and ensure that the cracked welding seam of the upper bottom shell of the electromagnetic chuck can be repeatedly used in an economical, safe and reliable manner.
Disclosure of Invention
Aiming at the problems of partial and integral cracking and desoldering of welding seams of the outer side circle of the upper bottom shell of the electromagnetic chuck in the background technology, the invention provides a tool structure and a repair process for lifting steel ingot electromagnetic chuck bottom shell welding seam groups of wheels, which can implement on-line welding repair of cracking of the upper bottom shell of the electromagnetic chuck, save maintenance time, reduce maintenance cost, reduce shutdown loss and provide guarantee for reasonable production.
The technical scheme for solving the technical problem of the invention is as follows:
the invention relates to a welding seam assembling tool structure of a bottom shell of an electromagnetic chuck for lifting steel ingots of wheels, which comprises a circular bottom shell and an upper cover panel welded on the bottom shell, wherein a welding seam is formed at the junction of the bottom shell and the upper cover panel; a plurality of hook head clamps are uniformly arranged on the bottom shell and the upper cover panel along the circumference; the hook head clamp comprises an コ -shaped hook head clamp body, the upper part and the lower part of the hook head clamp body are respectively a hook head upper clamping plate and a hook head lower clamping plate, and the distance between the hook head upper clamping plate and the hook head lower clamping plate is equal to the sum of the heights of the bottom shell and the upper cover panel; the upper clamping plate of the hook head is provided with a screw hole, and a full-thread bolt matched with the screw hole is arranged in the screw hole.
As a further improvement of the technical scheme of the invention, the number of the hook head clips is 8.
As a further improvement of the technical scheme of the invention, the hook head clamp body is processed and manufactured by a steel plate with the thickness of 100mm, and the diameter of the screw hole is 50 mm.
The invention discloses a repair process for a welding seam of a bottom shell of an electromagnetic chuck for hoisting a wheel steel ingot, which is characterized in that the repair process for the welding seam group of the bottom shell of the electromagnetic chuck for hoisting the wheel steel ingot by using the technical scheme comprises the following steps:
step one, manufacturing and assembling hook head clamps; processing and manufacturing eight hook head clamp bodies by adopting a steel plate with the thickness of 100mm, and forming a hook head clamp by arranging a screw hole and a full-thread bolt on a clamping plate at the upper part of the hook head;
step two, preparing before welding;
2.1), the welding equipment is a CMT cold welding system, and the crack back chipping equipment is a carbon arc gouging ZX5-630 welding machine matched with a plasma gouging LGK-100 MA;
2.2), welding wire: the ERNI-1 welding wire with the diameter of 1.6mm has no defect on the surface;
2.3) gas requirements: argon gas: the purity is 99.99 percent;
2.4), welding power polarity and connection method: the bottoming, filling and capping are all in a reverse connection method;
2.5), welding technical requirements: the overlaying layer fuses base materials, and a welding seam cannot have any welding defects;
2.6), welding material: 35# cast steel;
2.7), auxiliary facilities: the device comprises a heat-insulating barrel, a sample plate, a temperature measuring instrument, a magnifier, a mask, gloves, a slag removal hammer, a chisel, a file, a steel brush, abrasive paper, a steel ruler, a horizontal ruler, a movable spanner, a straight grinder, an angle grinder, a wire pliers, a steel saw blade, a labor protection article and the like;
8) determining welding process parameters according to the repair requirements of the welding seam;
step three, welding is implemented;
before welding, a carbon arc gouging ZX5-630 welding machine is adopted to match with a plasma gouging LGK-100MA to back gouge the welding seam on a part or a cracked and separated bottom shell and an upper cover panel, then the bottom shell and the upper cover panel are reset to be combined, the inner sides of upper clamping plates and lower clamping plates of hook heads of eight hook head clamps are respectively hooked on the top surface of the upper cover panel and the bottom surface of the bottom shell, then a full-thread bolt is screwed down to press the bottom of the full-thread bolt against the upper cover panel, after the full-thread bolt is measured to meet the original size, 1.6mmERNI-1 welding wires without defects on the surface are adopted to weld the cracked phi welding seam by CMT cold welding system equipment, the welding of a bottom layer is firstly carried out, the thickness of the welding layer is less than 2mm, after the welding of the bottom layer is finished, the welding layer is cooled to room temperature to check that no welding defects exist, then a filling layer and a cover layer are continuously welded according to a bottom layer welding process, if the welding defects exist, the carbon arc gouging Repairing welding after rooting; after welding, the eight hook head clamps are completely disassembled, welded welding seams are manually ground to meet the use size, and the steel ingot is delivered for use after being completely met various hoisting requirements through field wheel steel ingot hoisting inspection and acceptance.
As a further improvement of the technical scheme of the invention, if the whole welding seam is cracked and separated, when the whole girth welding seam is welded, the bottoming layer adopts a segmented welding mode, half of the welding layer is welded, the thickness of the welding layer is less than 2mm, then the welding layer is cooled to room temperature, the other half of the welding layer is welded, and then the welding layer and the cover surface layer are continuously welded in segments by the same process when the welding layer is cooled to room temperature and no welding defect exists, if the welding defect exists in the welding seam, a carbon arc air gouging ZX5-630 welding machine is matched with a plasma air gouging LGK-100MA to perform back gou.
As a further improvement of the technical scheme of the invention, when the bottom layer is welded, the welding current is 220-260A, the arc voltage is 26 +/-1V, the welding speed is 15 +/-1 cm/min, the welding current of the filling layer and the cover layer is 280-360A, the arc voltage is 30 +/-1V, and the welding speed is 25 +/-1 cm/min.
Compared with the prior art, the electromagnetic chuck bottom shell weld assembly tool structure and the repair process for lifting the wheel steel ingot have the advantages that the operation is safe and easy, the welding quality is stable, the investment cost is low, the actual requirements on the site are met, the working efficiency is high, the maintenance cost is greatly reduced, the long-time process shutdown loss is reduced, the guarantee is provided for reasonably assembling and producing various domestic and foreign wheels, and meanwhile, the scientific reference basis is provided for the welding repair of other electromagnetic chuck spare parts in the future.
Drawings
The invention is further described with reference to the following figures and detailed description:
FIG. 1 is a schematic structural diagram of a welding seam assembly tooling structure of a bottom shell of an electromagnetic chuck for lifting steel ingots of wheels;
FIG. 2 is a schematic top view of a tooling structure for assembling welding seams of a bottom shell of an electromagnetic chuck for lifting steel ingots of wheels;
FIG. 3 is a schematic view of the hook head clamp of the present invention;
in the figure: 1. the welding machine comprises a bottom shell 2, an upper cover panel 3, a hook head clamp 5, an upper fixing device 6, a connecting chain 7, a lifting ring 8, a welding seam 9, a welding gun 10, a hook head upper clamp plate 11, a hook head lower clamp plate 12, a full-thread bolt 13, a thread hole 14 and a hook head clamp body.
Detailed Description
Example 1:
as shown in fig. 1 to 3, the electromagnetic chuck bottom shell weld assembly tooling structure for lifting wheel steel ingots comprises a circular bottom shell 1 and an upper cover panel 2 welded on the bottom shell 1, wherein a weld 8 is formed at the junction of the bottom shell and the upper cover panel, a plurality of upper fixing devices 5 are uniformly arranged on the upper surface of the upper cover panel 2, and each upper fixing device 5 is connected with a lifting ring 7 through a connecting chain 6, and the electromagnetic chuck bottom shell weld assembly tooling structure is characterized by further comprising a welding gun 9; a plurality of hook head clamps 3 are uniformly arranged on the bottom shell 1 and the upper cover panel 2 along the circumference; the hook head clamp 3 comprises a hook head clamp body 14 in the shape of 'コ', the upper part and the lower part of the hook head clamp body 14 are respectively a hook head upper clamp plate 10 and a hook head lower clamp plate 11, and the distance between the hook head upper clamp plate 10 and the hook head lower clamp plate 11 is equal to the sum of the heights of the bottom shell 1 and the upper cover panel 2; the upper clamping plate 10 of the hook head is provided with a screw hole 13, and a full-thread bolt 12 matched with the screw hole 13 is arranged in the screw hole 13.
In this embodiment, the number of the hook head clips 3 is 8.
In this embodiment, the hook clamp body 14 is made of a steel plate with a thickness of 100mm, and the diameter of the thread hole 13 is 50 mm.
Example 2:
the invention discloses a repair process for a welding seam of a bottom shell of an electromagnetic chuck for hoisting a wheel steel ingot, which is characterized in that the welding seam group of the bottom shell of the electromagnetic chuck for hoisting the wheel steel ingot, which is described in embodiment 1, is used for repairing a tool structure, and comprises the following steps:
step one, manufacturing and assembling hook head clamps; eight hook head clamp bodies 14 are manufactured by processing a steel plate with the thickness of 100mm, screw holes 13 are formed in a clamping plate 10 at the upper part of a hook head, and full-thread bolts 12 are arranged to form a hook head clamp 3;
step two, preparing before welding;
2.1, the welding equipment is a CMT cold welding system, and the crack back chipping equipment is a carbon arc gouging ZX5-630 welding machine matched with a plasma gouging LGK-100 MA;
2.2, welding wire: the ERNI-1 welding wire with the diameter of 1.6mm has no defect on the surface;
2.3 gas requirements: argon gas: the purity is 99.99 percent;
2.4, welding power polarity and connection method: the bottoming, filling and capping are all in a reverse connection method;
2.5, welding technical requirements: the overlaying layer fuses base materials, and a welding seam cannot have any welding defects;
2.6, welding materials: 35# cast steel;
2.7, auxiliary facilities: the device comprises a heat-insulating barrel, a sample plate, a temperature measuring instrument, a magnifier, a mask, gloves, a slag removal hammer, a chisel, a file, a steel brush, abrasive paper, a steel ruler, a horizontal ruler, a movable spanner, a straight grinder, an angle grinder, a wire pliers, a steel saw blade, a labor protection article and the like;
8. determining welding process parameters according to the repair requirements of the welding seam 8;
step three, welding is implemented;
to the characteristics that the last drain pan welding seam of handling wheel steel ingot electromagnet is right and the welding is difficult, firstly: according to the diameter of the upper bottom shell of the electromagnetic chuck, eight hook head clamps are set to be equally locked on the edge of a welding seam on the outer side of the upper bottom shell of the electromagnetic chuck, partial or cracked and disengaged welding seams of the bottom shell can be fitted, the bottom shell is flat, gaps and grooves of the welding seams are the same in size, the original size is met, and the deformation caused by thermal expansion and cold contraction is ensured to be in a specified range through rigid fixation in the welding process. Secondly, the following steps: because the electromagnetic chuck is subjected to conjoined welding repair, and overhigh heat is transferred to the inner shell of the electromagnetic chuck to directly damage the conductive coil, the traditional welding method and welding processes such as preheating, heat preservation, welding, heat treatment and the like are cancelled, and a cold welding system (CMT) is selected to carry out welding in a segmented mode.
Before welding, a carbon arc gouging ZX5-630 welding machine is adopted to match with a plasma gouging LGK-100MA to perform back chipping on a welding seam 8 on a part or a cracked and separated bottom shell 1 and an upper cover panel 2, then the bottom shell 1 and the upper cover panel 2 are reset to be combined, the inner sides of a hook head upper clamping plate 10 and a hook head lower clamping plate 11 of eight hook head clamps 3 are respectively hooked on the top surface of the upper cover panel 2 and the bottom surface of the bottom shell 1, then a full-thread bolt 12 is screwed down to press the bottom of the full-thread bolt 12 on the upper cover panel 2, after the measurement meets the original size, a CMT cold welding system device adopts a phi 1.6mmERNI-1 welding wire without surface defect to weld the cracked welding seam 8, the welding of a bottom layer is firstly performed, the thickness of the welding layer is less than 2mm, after the welding of the bottom layer is completed, the welding is cooled to room temperature to check that no welding defect exists, a filling layer and a cover are continuously, if welding defects exist in the welding seam, a carbon arc gouging ZX5-630 welding machine is adopted to be matched with a plasma gouging LGK-100MA for back gouging and then repair welding is carried out; after welding, the eight hook head clamps 3 are all disassembled, welded welding seams are manually ground to meet the use size, and the steel ingot is delivered for use after being completely met various hoisting requirements through field wheel steel ingot hoisting inspection and acceptance.
In the embodiment, if the welding seam 8 is integrally cracked and separated, when the integral circumferential welding seam is welded, the bottoming layer is welded in a segmented welding mode, half of the welding layer is welded, the thickness of the welding layer is smaller than 2mm, then the welding layer is cooled to room temperature and then welded in the other half, when the welding layer is cooled to room temperature and no welding defect exists, the filling layer and the cover surface layer are continuously welded in a segmented mode in the same process, and if the welding defect exists in the welding seam, a carbon arc gouging ZX5-630 welding machine is matched with a plasma gouging LGK-100MA to perform back gouging repair welding. The purpose of doing so is that the input of first control welding heat destroys the conducting coil in the electromagnetic chuck casing, and second welding expend with heat and contract with cold deformation volume control is minimum.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (6)
1. A welding seam assembling tool structure of a bottom shell of an electromagnetic chuck for lifting wheel steel ingots comprises a circular bottom shell (1) and an upper cover panel (2) welded on the bottom shell (1), wherein a welding seam (8) is formed at the junction of the bottom shell and the upper cover panel, a plurality of upper fixing devices (5) are uniformly arranged on the upper surface of the upper cover panel (2), and each upper fixing device (5) is connected with a lifting ring (7) through a connecting chain (5), and the welding seam assembling tool structure is characterized by further comprising a welding gun (9); a plurality of hook head clamps (3) are uniformly arranged on the bottom shell (1) and the upper cover panel (2) along the circumference; the hook head clamp (3) comprises an コ -shaped hook head clamp body (14), the upper part and the lower part of the hook head clamp body (14) are respectively a hook head upper clamp plate (10) and a hook head lower clamp plate (11), and the distance between the hook head upper clamp plate (10) and the hook head lower clamp plate (11) is equal to the sum of the heights of the bottom shell (1) and the upper cover panel (2); the upper clamping plate (10) of the hook head is provided with a screw hole (13), and a full-thread bolt (12) matched with the screw hole (13) is arranged in the screw hole (13).
2. The electromagnetic chuck bottom shell weld joint assembling tool structure for steel ingots of lifting wheels according to claim 1, wherein the number of the hook head clamps (3) is 8.
3. The electromagnetic chuck bottom shell weld assembly tooling structure for lifting steel ingots of wheels according to claim 1, is characterized in that the hook clamp body (14) is manufactured by machining a steel plate with the thickness of 100mm, and the diameter of the screw hole (13) is 50 mm.
4. A repair process for a welding seam of a bottom shell of an electromagnetic chuck for lifting wheel ingots is characterized in that the welding seam group of the bottom shell of the electromagnetic chuck for lifting wheel ingots, which is disclosed by any one of claims 1 to 3, is used for repairing a tool structure, and comprises the following steps:
step one, manufacturing and assembling hook head clamps; eight hook head clamp bodies (14) are manufactured by processing a steel plate with the thickness of 100mm, screw holes (13) are formed in a clamping plate (10) at the upper part of a hook head, and full-thread bolts (12) are arranged to form the hook head clamp (3);
step two, preparing before welding;
2.1), the welding equipment is a CMT cold welding system, and the crack back chipping equipment is a carbon arc gouging ZX5-630 welding machine matched with a plasma gouging LGK-100 MA;
2.2), welding wire: the ERNI-1 welding wire with the diameter of 1.6mm has no defect on the surface;
2.3) gas requirements: argon gas: the purity is 99.99 percent;
2.4), welding power polarity and connection method: the bottoming, filling and capping are all in a reverse connection method;
2.5), welding technical requirements: the overlaying layer fuses base materials, and a welding seam cannot have any welding defects;
2.6), welding material: 35# cast steel;
2.7), auxiliary facilities: the device comprises a heat-insulating barrel, a sample plate, a temperature measuring instrument, a magnifier, a mask, gloves, a slag removal hammer, a chisel, a file, a steel brush, abrasive paper, a steel ruler, a horizontal ruler, a movable spanner, a straight grinder, an angle grinder, a wire pliers, a steel saw blade, a labor protection article and the like;
8) determining welding process parameters according to the repair requirement of the welding seam (8);
step three, welding is implemented;
before welding, a carbon arc gouging ZX5-630 welding machine is adopted to match with a plasma gouging LGK-100MA to perform back chipping on a welding seam (8) on a part or a cracked and separated bottom shell (1) and an upper cover panel (2), then the bottom shell (1) and the upper cover panel (2) are reset to be combined, then the inner sides of a hook head upper clamping plate (10) and a hook head lower clamping plate (11) of eight hook head clamps (3) are respectively hooked on the top surface of the upper cover panel (2) and the bottom surface of the bottom shell (1), then the bottom of a full-thread bolt (12) is pressed on the upper cover panel (2) through screwing the full-thread bolt (12), after the full-thread bolt meets the original size, a phi 1.6mm ERNI-1 welding wire without surface defects is adopted to weld the cracked welding seam (8) through CMT cold welding system equipment, the welding of a bottom layer is firstly performed, the thickness is less than 2mm, after the welding of the bottom layer is finished and cooled to the room temperature, no welding defects are detected, and then the welding layer and the welding process of Covering layer, if welding defect exists in welding seam, repairing welding after carbon arc air gouging ZX5-630 welding machine is matched with plasma air gouging LGK-100MA for back chipping; after welding, the eight hook head clamps (3) are all disassembled, welded welding seams are manually ground to meet the use size, and steel ingots are delivered for use after being completely met with various hoisting requirements through field wheel steel ingot hoisting inspection and acceptance.
5. The repair process of the welding line of the bottom shell of the electromagnetic chuck for lifting steel ingots of wheels, as claimed in claim 4, is characterized in that if the welding line (8) is cracked and separated integrally, when the welding line of the integral ring is welded, the bottom layer is welded in a segmented mode, one half is welded, the thickness of the welding layer is smaller than 2mm, then the welding layer is cooled to room temperature, the other half is welded, then the welding layer is cooled to room temperature, the filling layer and the cover surface layer are welded in a segmented mode by the same process when the welding line is checked to be free of any welding defects after being cooled to room temperature, and if the welding defects exist in the welding line, a carbon arc gouging ZX5-630 welding machine.
6. The repair process of the welding seam of the electromagnetic chuck bottom shell of the steel ingot for the lifting wheels as claimed in claim 4, wherein when the bottom layer is welded, the welding current is 220-260A, the arc voltage is 26 +/-1V, the welding speed is 15 +/-1 cm/min, the welding current of the filling layer and the cover layer is 280-360A, the arc voltage is 30 +/-1V, and the welding speed is 25 +/-1 cm/min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010235651.4A CN111250826A (en) | 2020-03-30 | 2020-03-30 | Assembly tool structure and repair process for welding seam of bottom shell of electromagnetic chuck for lifting wheel steel ingot |
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| CN202010235651.4A CN111250826A (en) | 2020-03-30 | 2020-03-30 | Assembly tool structure and repair process for welding seam of bottom shell of electromagnetic chuck for lifting wheel steel ingot |
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| CN111250826A true CN111250826A (en) | 2020-06-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6297472B1 (en) * | 1998-04-10 | 2001-10-02 | Aromatic Integrated Systems, Inc. | Welding system and method |
| CN105234619A (en) * | 2015-11-18 | 2016-01-13 | 哈尔滨工业大学 | Multidirectional positioning clamp for welding of turbopump |
| CN110052728A (en) * | 2019-05-14 | 2019-07-26 | 安徽马钢设备检修有限公司 | A kind of online welding repair method of Ball Milling Machine End Cover cracking |
| CN209647957U (en) * | 2018-12-28 | 2019-11-19 | 长春捷柯汽车工艺装备有限公司 | A kind of hand clamp |
| CN212094773U (en) * | 2020-03-30 | 2020-12-08 | 安徽马钢设备检修有限公司 | Electromagnetic chuck bottom shell weld assembly tooling structure for lifting wheel steel ingots |
-
2020
- 2020-03-30 CN CN202010235651.4A patent/CN111250826A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6297472B1 (en) * | 1998-04-10 | 2001-10-02 | Aromatic Integrated Systems, Inc. | Welding system and method |
| CN105234619A (en) * | 2015-11-18 | 2016-01-13 | 哈尔滨工业大学 | Multidirectional positioning clamp for welding of turbopump |
| CN209647957U (en) * | 2018-12-28 | 2019-11-19 | 长春捷柯汽车工艺装备有限公司 | A kind of hand clamp |
| CN110052728A (en) * | 2019-05-14 | 2019-07-26 | 安徽马钢设备检修有限公司 | A kind of online welding repair method of Ball Milling Machine End Cover cracking |
| CN212094773U (en) * | 2020-03-30 | 2020-12-08 | 安徽马钢设备检修有限公司 | Electromagnetic chuck bottom shell weld assembly tooling structure for lifting wheel steel ingots |
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