CN112846502B - Preparation method of box-shaped structure box body - Google Patents
Preparation method of box-shaped structure box body Download PDFInfo
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- CN112846502B CN112846502B CN202011636274.1A CN202011636274A CN112846502B CN 112846502 B CN112846502 B CN 112846502B CN 202011636274 A CN202011636274 A CN 202011636274A CN 112846502 B CN112846502 B CN 112846502B
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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Abstract
The invention discloses a preparation method of a box-shaped structure box body, and belongs to the technical field of laser welding. The preparation method of the box-shaped structure box body comprises the following steps: positioning and welding the outer surfaces of the top plate and the coaming assembly; disassembling the bottom plate assembly, feeding a welding gun from the bottom of the box body, and completely welding the fillet welds at the inner sides of the top plate, the coaming assembly and the vertical plate assembly to ensure that the fusion depth is more than or equal to 2.5 mm; mounting a bottom plate assembly, enabling a welding gun to enter the box body through a window in the top plate and the surrounding plate assembly, and completely welding the inside fillet welds of the bottom plate assembly, the surrounding plate assembly and the vertical plate assembly to ensure that the fusion depth is more than or equal to 2.5 mm; and carrying out laser large-fusion-depth back-sealing welding and laser filler wire cover surface welding on the outer surfaces of the top plate, the enclosing plate assembly and the bottom plate assembly, and ensuring that the fusion depth is more than or equal to 6 mm. The preparation method of the box-shaped structure box body realizes full coverage of the internal welding line, avoids redundant materials falling from the fillet welding line to damage the laser lens, and ensures the cleanliness.
Description
Technical Field
The invention relates to the technical field of laser welding, in particular to a preparation method of a box-shaped structure box body.
Background
The laser needs a stable, reliable and high-cleanliness working environment for working, high-precision processing requirements are provided for a box body loaded with the laser, and the manufacture of the high-strength, high-precision and high-cleanliness box body is a prior condition for ensuring the normal working of the laser. A certain box body is a full titanium alloy closed box-shaped component, the structural material is titanium alloy, an assembly gap is not allowed inside the box body, and the box body is required to be firmly connected with the outside.
However, in the production process of the laser-loaded box in the prior art, the box cannot realize full coverage of the inner fillet weld, and the laser lens is damaged by falling particles in the weld of the box in work, so that the whole set of product is scrapped, and the loss is serious.
Disclosure of Invention
The invention provides a preparation method of a box-shaped structure box body, which solves or partially solves the technical problems that in the production process of the box body loaded with a laser in the prior art, the box body cannot realize full coverage of an inner fillet weld, and particles falling from the weld of the box body damage a laser lens in work, so that the whole set of product is scrapped.
In order to solve the technical problem, the invention provides a preparation method of a box-shaped structure box body, which comprises the following steps: preparing a top plate, a coaming assembly, a bottom plate assembly and a vertical plate assembly; assembling the top plate, the coaming assembly, the bottom plate assembly and the vertical plate assembly to form a box body, and clamping; positioning and welding the top plate and the outer surface of the coaming assembly; disassembling the bottom plate assembly, enabling a welding gun to enter from the bottom of the box body, and completely welding the fillet welds at the inner sides of the top plate, the surrounding plate assembly and the vertical plate assembly to ensure that the fusion depth is more than or equal to 2.5 mm; mounting a bottom plate assembly, enabling a welding gun to enter the box body through a window in the top plate and the surrounding plate assembly, and completely welding the inside fillet welds of the bottom plate assembly, the surrounding plate assembly and the vertical plate assembly to ensure that the fusion depth is more than or equal to 2.5 mm; and carrying out laser large-fusion-depth back-sealing welding and laser filler wire cover surface welding on the outer surfaces of the top plate, the enclosing plate assembly and the bottom plate assembly, and ensuring that the fusion depth is more than or equal to 6 mm.
Further, before the top plate, the surrounding plate assembly, the bottom plate assembly and the vertical plate assembly are assembled to form the box body, the method further comprises the following steps: soaking the top plate, the coaming assembly, the bottom plate assembly and the vertical plate assembly in an oil removing groove for 5-25 min; cleaning the top plate, the coaming assembly, the bottom plate assembly and the vertical plate assembly, and soaking in a mixed acid solution for 0.5-4 min; cleaning the top plate, the coaming assembly, the bottom plate assembly and the vertical plate assembly for 2-3 times by using clear water at 40-60 ℃; and drying the top plate, the coaming assembly, the bottom plate assembly and the vertical plate assembly by using clean compressed air for later use.
Further, the shroud assembly includes: two end plates and two side plates; the two end plates are respectively fixedly arranged at two ends of the two side plates; the riser subassembly includes: a plurality of vertical plates; the floor panel assembly includes: the device comprises a bottom plate, two first plates and two second plates; the two first plates are fixedly arranged at two ends of the bottom plate; the two second plates are fixedly arranged on two sides of the bottom plate.
Furthermore, a plurality of first sinking grooves are formed in the end face, facing the bottom plate, of the top plate; the middle part of the end surface of the bottom plate facing the top plate is provided with a plurality of second sunken grooves; the inner walls of the two side plates are respectively provided with a plurality of third sunken grooves, the third sunken grooves correspond to the vertical plates one by one, and the first sunken grooves and the second sunken grooves correspond to the third sunken grooves one by one.
Furthermore, both ends of the first sunken groove and the second sunken groove are sealed.
Further, two side plates and two end plates are arranged above the top plate; inserting the vertical plate into the corresponding first sunken groove and the third sunken groove; and placing the bottom plate above the two side plates and the two end plates, and simultaneously inserting the vertical plates into the corresponding second sunken grooves.
Further, after inserting the riser into the corresponding first sunken slot, the method further comprises: and respectively inserting the two positioning core rods into inner holes in the vertical plates to position the vertical plates.
Furthermore, a circular truncated cone, a plurality of transverse ribs and a plurality of longitudinal ribs are fixedly arranged on the bottom plate; the plurality of transverse ribs and the plurality of longitudinal ribs form a cross structure; the cross position of the longitudinal rib and the cross position of the transverse rib are provided with first notches, the cross position of the transverse rib and the cross position of the longitudinal rib are provided with second notches, and the first notches are embedded into the second notches.
Furthermore, an annular groove is formed in the bottom plate; the circular truncated cone is embedded into the annular groove, and the circular truncated cone is welded with the annular groove.
Further, the outer surfaces of the top plate and the surrounding plate assembly are subjected to positioning welding by laser welding or manual argon tungsten-arc welding; and all the inner side fillet welds of the top plate, the surrounding plate assembly and the vertical plate assembly are welded by adopting handheld wire-feeding laser welding, and the positions which cannot be reached by the handheld wire-feeding laser welding are welded by adopting manual argon tungsten-arc welding.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
because the top plate, the enclosing plate assembly, the bottom plate assembly and the vertical plate assembly are prepared, the top plate, the enclosing plate assembly, the bottom plate assembly and the vertical plate assembly are assembled to form a box body and are clamped tightly, the top plate, the enclosing plate assembly, the bottom plate assembly and the vertical plate assembly can be preliminarily fixed, the subsequent welding is convenient to carry out, and because the outer surfaces of the top plate and the enclosing plate assembly are subjected to positioning welding, the gap between the top plate and the enclosing plate assembly can be filled, meanwhile, the top plate and the enclosing plate assembly are preliminarily fixed, the requirement of the assembly position degree is met, because the bottom plate assembly is disassembled, a welding gun enters from the bottom of the box body, and the inner side corner welding seams of the top plate, the enclosing plate assembly and the vertical plate assembly are all welded, the corner welding seams inside the box body can be fully welded, all the inner corner seams can be fully covered, the reliable sealing is achieved, and because the fusion depth is ensured to be more than or equal to 2.5mm, the strength of the inner welding seams can be ensured, the method has the advantages that when the large-penetration welding seam on the outer side is carried out, the phenomenon that the fillet welding seam inside the box body is torn due to overlarge stress is avoided, meanwhile, the phenomenon that the redundant materials subjected to follow-up fluorescent flaw detection and surface passivation are remained inside the welding seam is avoided, the cleanness of the inside of the box body is guaranteed, and the penetration is guaranteed to be larger than or equal to 6mm due to the fact that laser large-penetration back cover welding and laser filler cap welding are carried out on the outer surfaces of the top plate assembly, the surrounding plate assembly and the bottom plate assembly, so that airtightness and connection strength can be guaranteed.
Drawings
FIG. 1 is a schematic structural view of a box body of box structure according to a method for manufacturing a box body of box structure according to an embodiment of the present invention;
FIG. 2 is an assembled view of the box-like structure of FIG. 1;
FIG. 3 is a schematic view of the welding of the fillet weld inside the box-shaped structural box of FIG. 1;
FIG. 4 is a schematic view of the construction of the bottom plate assembly of the box-like structure of the container of FIG. 1;
FIG. 5 is a schematic view of the positioning of the vertical plate of the box-shaped structure of the box body in FIG. 1;
fig. 6 is a schematic structural view of a positioning core rod of a vertical plate of the box-shaped structure box body in fig. 1.
Detailed Description
Referring to fig. 1 to 3, a method for manufacturing a box-shaped structure box provided by an embodiment of the present invention includes:
preparing a top plate 1, a coaming component 2, a bottom plate component 3 and a vertical plate component 4.
The top plate 1, the coaming component 2, the bottom plate component 3 and the vertical plate component 4 are assembled to form a box body and are clamped tightly.
And (3) performing positioning welding on the outer surfaces of the top plate 1 and the enclosing plate assembly 2.
Dismantle bottom plate subassembly 3, welder 5 gets into by the bottom half, and to the inside fillet weld full weld of roof 1, bounding wall subassembly 2 and riser subassembly 3, guarantee that the penetration is more than or equal to 2.5 mm.
Installing the bottom plate assembly 3, and enabling a welding gun 5 to enter the box body through the windows on the top plate 1 and the enclosing plate assembly 2, and completely welding the inner side fillet welds of the bottom plate assembly 3, the enclosing plate assembly 2 and the vertical plate assembly 4, so that the fusion depth is more than or equal to 2.5 mm.
And carrying out laser large-fusion-depth back-sealing welding and laser filler wire cover surface welding on the outer surfaces of the top plate 1, the coaming assembly 2 and the bottom plate assembly 3, and ensuring that the fusion depth is more than or equal to 6 mm.
In the embodiment of the application, the top plate 1, the coaming component 2, the bottom plate component 3 and the vertical plate component 4 are prepared, the top plate 1, the coaming component 2, the bottom plate component 3 and the vertical plate component 4 are assembled to form a box body and are clamped, so the top plate 1, the coaming component 2, the bottom plate component 3 and the vertical plate component 4 can be preliminarily fixed, the subsequent welding is convenient to carry out, the outer surfaces of the top plate 1 and the coaming component 2 are positioned and welded, the gap between the top plate 1 and the coaming component 2 can be filled, meanwhile, the top plate 1 and the coaming component 2 are preliminarily fixed, the requirement of the assembly position degree is met, the welding gun 5 enters from the bottom of the box body and welds all the inner side fillet welds of the top plate 1, the coaming component 2 and the vertical plate component 3, the fillet welds inside of the box body can be fully welded, and the full coverage of all the inner fillet welds can be realized, reliable sealing is achieved, the penetration is guaranteed to be larger than or equal to 2.5mm, the strength of an inner welding seam can be guaranteed, the problem that when an outer large penetration welding seam is carried out, due to the fact that stress is too large, fillet welding seams inside the box body are torn is avoided, meanwhile, surplus objects subjected to follow-up fluorescent flaw detection and surface passivation treatment are prevented from remaining inside the welding seams, the interior of the box body is guaranteed to be clean, due to the fact that laser large penetration back-up welding and laser filler cap welding are carried out on the outer surfaces of the top plate 1, the surrounding plate assembly 2 and the bottom plate assembly 3, the penetration is guaranteed to be larger than or equal to 6mm, and therefore airtightness and connection strength can be guaranteed.
In this embodiment, when the case is assembled, the bottom plate assemblies 3 are all positioned above the top plate 1, facilitating welding.
Specifically, before the top plate 1, the enclosing plate assembly 2, the bottom plate assembly 3 and the upright plate assembly 4 are assembled to form the box body, the method further comprises the following steps:
and (3) soaking the top plate 1, the coaming assembly 2, the bottom plate assembly 3 and the vertical plate assembly 4 in an oil removing groove for 5-25 min to remove oil.
And cleaning the top plate 1, the coaming component 2, the bottom plate component 3 and the vertical plate component 4, and soaking in a mixed acid solution for 0.5-4 min to remove oxide skin.
And cleaning the top plate 1, the coaming component 2, the bottom plate component 3 and the vertical plate component 4 for 2-3 times by using clear water at 40-60 ℃ to remove residual acid liquor on the wall plate.
Blow dry roof 1, bounding wall subassembly 2, bottom plate subassembly 3 and riser subassembly 4 with clean compressed air for use, guarantee the cleanliness factor.
Specifically, the shroud assembly 2 includes: two end plates 2-1 and two side plates 2-2.
The two end plates 2-1 are respectively fixedly arranged at the two ends of the two side plates 2-2. In the embodiment, the two end plates 2-1 are provided with windows for facilitating the entry of a welding gun.
The floor panel assembly 3 includes: a bottom plate 3-1, two first plates 3-2 and two second plates 3-3.
Two first plates 3-2 are fixedly arranged on both sides of the bottom plate 3-1.
Two second plates 3-3 are fixedly arranged at both ends of the bottom plate 3-1.
After the bottom plate assembly 3 is assembled, welding is independently carried out, the lower plane of the bottom plate 3-1, the upper plane where the two first plates 3-2 and the two second plates 3-3 are located are machined after welding, and the flatness and the parallelism of the bottom plate assembly 3 before welding of the box body are not larger than 0.1 mm.
Specifically, preparation roof 1, bounding wall subassembly 2, bottom plate subassembly 3 and riser subassembly 4 include:
and 2mm allowance is reserved in the thickness direction of the outer side of one of the two end plates 2-1, and the external dimension is controlled according to +/-0.1.
The top plate 1 and the two side plates 2-2 are provided with 2mm allowance in the thickness direction of the mounting cover plate, and the external dimension is controlled according to +/-0.1.
And 2mm allowance is reserved in the thickness direction of the outer side of the other end plate of the two end plates 2-1 and the installation position of the top plate 1, the overall dimension is controlled according to +/-0.1, and the subsequent welding can be smoothly carried out.
The width size of a plurality of vertical plates 4-1 is controlled according to +/-0.1, the length size is controlled according to (-0.1, -0.2), and the thickness size is controlled according to (-0.05, -0.1), so that the subsequent welding can be carried out smoothly.
In the bottom plate component 3, the thicknesses of the bottom plate 3-1, the two first plates 3-2 and the two second plates 3-3 are respectively reserved with 2mm allowance, and the heights of the two first plates 3-2 and the two second plates 3-3 are respectively reserved with 3mm allowance, so that the subsequent welding can be carried out smoothly.
Welding grooves with the depth of 4mm and the width of 3mm are machined at the welding positions of the outer sides of the two end plates 2-1, the two side plates 2-2, the top plate 1 and the bottom plate assembly 3, and subsequent welding can be carried out smoothly.
The flatness of all wall plates of the top plate 1, the coaming assembly 2, the bottom plate assembly 3 and the vertical plate assembly 4 is controlled according to 0.2, and subsequent welding can be carried out smoothly.
Specifically, a plurality of first sunken grooves are formed in the end face, facing the bottom plate 3-1, of the top plate 1.
The middle part of the end surface of the bottom plate 3-1 facing the top plate 1 is provided with a plurality of second sunken grooves.
The inner walls of the two side plates 2-2 are respectively provided with a plurality of third sunken grooves, the third sunken grooves correspond to the vertical plates 4-1 one by one, and the first sunken grooves, the second sunken grooves correspond to the third sunken grooves one by one.
The two ends of the first sunken groove and the second sunken groove are blocked, so that the positioning assembly of the vertical plates 4-1 is met, and the structural meat deficiency of the L-shaped welding butt joint surface of the bottom plate assembly 3 and the outer side of the side plate 2-2 is avoided.
Specifically, assemble roof 1, bounding wall subassembly 2, bottom plate subassembly 3 and riser subassembly 4 and form the box and include:
two side plates 2-2 and two end plates 2-1 are arranged above the top plate 1.
And the vertical plate 4-1 is inserted into the corresponding first sunken groove and the third sunken groove.
And (3) placing the bottom plate 3-1 above the two side plates 2-2 and the two end plates 2-1, and simultaneously inserting the vertical plate 4-1 into the corresponding second sunken groove to finish the assembly of the box body. At the moment, the heavy F-shaped clamp is used for clamping and restricting the length direction and the width direction, the arch-shaped clamp is used for clamping and restricting the height direction, the dislocation quantity of the outer side of the bottom plate component 3 is less than or equal to 0.2mm, and the butt seam gap is less than or equal to 0.15 mm.
In the embodiment, after the box body is assembled, the heavy F-shaped clamp is adopted to restrain and position each direction of the outer side, and the alignment of all sides is adjusted to ensure the assembly precision.
Wherein, the positioning size of the first sunken groove, the second sunken groove and the third sunken groove is controlled according to +/-0.1, the width size is controlled according to (+0.1, +0.05) and the depth size is controlled according to (+0.2, + 0.1).
Referring to fig. 5-6, after riser 4-1 is inserted into the corresponding first undercut groove, the method further comprises: and respectively inserting the two positioning core rods 6 into inner holes of the vertical plates 4-1, and positioning the vertical plates 4-1. The mandrel 6 is provided with a plurality of round bulges 6-1, and the number of the round bulges 6-1 is consistent with that of the vertical plates 4-1.
In the embodiment, when the number of the vertical plates 4-1 is three, the three round protrusions 6-1 on the two positioning core rods 6 are used for positioning the inner holes on the three vertical plates 4-1, so that if the coaxiality of corresponding holes on the three vertical plates 4-1 is effectively ensured, the three round platforms 6-1 are uniformly provided with processing planes, the contact area with the three vertical plates 4-1 is reduced, and the disassembly is convenient.
Referring to fig. 4, a circular truncated cone 3-4, a plurality of transverse ribs 3-5 and a plurality of longitudinal ribs 3-6 are fixedly arranged on the bottom plate 3-1.
The plurality of transverse ribs 3-5 and the plurality of longitudinal ribs 3-6 form a cross structure.
The crossing position of the longitudinal ribs 3-6 and the transverse ribs 3-5 is provided with a first notch, the crossing position of the transverse ribs 3-5 and the longitudinal ribs 3-6 is provided with a second notch, and the first notch is embedded into the second notch.
In the embodiment, the bottom plate 3-1 is welded with the longitudinal ribs 3-6 and the transverse ribs 3-5, the longitudinal ribs 3-6 and the transverse ribs 3-5 are arranged in a crossed manner, each longitudinal rib 3-6 and each transverse rib 3-5 are of an integral structure, the structural stability of the reinforcing rib is guaranteed, the longitudinal ribs 3-6 and the transverse ribs 3-5 are provided with a first notch and a second notch which are 1/2 deep and are arranged at the crossed positions of the crossed ribs, the opening of the first notch faces the top plate 1, the opening of the second notch faces the bottom plate 3-1, and clamping assembly is adopted.
The groove width sizes of the first notch and the second notch of the longitudinal rib 3-6 and the transverse rib 3-5 are controlled according to (+0.5, +0.3), the groove depth sizes of the first notch and the second notch are ensured according to H/2(+0.4, +0.2), and the back chipping is less than R0.2.
The bottom plate 3-1 is provided with an annular groove.
The circular truncated cone 3-4 is embedded into the annular groove, and the circular truncated cone 3-4 is welded with the annular groove to realize an embedded lock bottom butt joint structure.
Because the circular truncated cone 3-4 is a bearing part for supporting the laser and bears the gravity of the laser, if the circular truncated cone 3-4 is directly welded on the bottom plate 3-1, the fusion depth is shallow, the strength is low, and under the condition that the stress of the circular truncated cone 3-4 is large, the welding line can be broken to cause accidents, but the circular truncated cone 3-4 adopts the welding line of the inner and outer annular butt joint, so that the stress state of the welding line between the circular truncated cone 3-4 and the bottom plate 3-1 is ensured, and the supporting strength of the circular truncated cone 3-4 is ensured.
In the present embodiment, the floor panel assembly 3 is welded first. Namely: the outer surfaces of the bottom plate 3-1, the two first plates 3-2 and the two second plates 3-3 are provided with V-shaped grooves at the involutive positions, so that the laser welding penetration is increased, the connection strength is ensured, the filler wire for cover welding is convenient, the connection effect is ensured, and meanwhile, the two surfaces of the V-shaped grooves can be welded, so that the connection effect is further ensured. The circular truncated cone 3-4 is embedded and fixed in the annular groove of the bottom plate 3-1, the bottom plate 3-1 and the circular truncated cone 3-4 are welded by laser welding, the two first plates 3-2, the two second plates 3-3, the plurality of transverse ribs 3-5 and the plurality of longitudinal ribs 3-6 are fixed on the bottom plate 3-1, and the bottom plate 3-1, the circular truncated cone 3-4, the two first plates 3-2, the two second plates 3-3, the plurality of transverse ribs 3-5 and the plurality of longitudinal ribs 3-6 are welded by laser welding. After welding, the bottom plate assembly 3 is machined, and then the top plate 1, the coaming assembly 2 and the vertical plate assembly 4 are sleeved in an aligning manner.
The V-shaped groove is formed in the outer surfaces of the top plate 1, the surrounding plate component 2 and the bottom plate component 3 in the closing position, the laser welding penetration is increased, the connection strength is guaranteed, the filler wires convenient for facing welding guarantee the connection effect, meanwhile, the two surfaces of the V-shaped groove can be welded, and the connection effect is further guaranteed.
Specifically, the outer surfaces of the top plate and the surrounding plate assembly are subjected to positioning welding by laser welding or manual argon tungsten-arc welding.
The thickness of each wallboard of box all is greater than 30mm, and the complete penetration technique degree of difficulty is great, and the complete penetration welding deformation is great, and size precision is difficult to guarantee. The inner side fillet welds of the top plate 1, the surrounding plate assembly 2 and the vertical plate assembly 4 are all welded by adopting handheld wire-feeding laser welding, and the positions which cannot be reached by the handheld wire-feeding laser welding are welded by adopting manual argon tungsten-arc welding, so that all inner fillet welds are fully covered, reliable sealing is achieved, and the situation that redundant materials are left in the inner butt welds is avoided.
When the laser large-penetration back sealing welding and the laser filler wire cover surface welding performed on the outer surfaces of the top plate 1, the coaming assembly 2 and the bottom plate assembly 3 are finished, the inner welding seam and the outer welding seam are firstly detected on site by using a 50-time magnifier for 100 percent, and then the inner welding seam and the outer welding seam are checked to be free of cracks by adopting fluorescence or coloring.
When the outer surfaces of the top plate 1, the coaming assembly 2 and the bottom plate assembly 3 are subjected to laser large-penetration back-up welding and laser filler wire cover surface welding, the heavy F clamp clamping position is adjusted according to a welding seam so as to control welding deformation.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A preparation method of a box-shaped structure box body is characterized by comprising the following steps:
preparing a top plate, a coaming assembly, a bottom plate assembly and a vertical plate assembly;
assembling the top plate, the coaming assembly, the bottom plate assembly and the vertical plate assembly to form a box body, and clamping;
positioning and welding the top plate and the outer surface of the coaming assembly;
disassembling the bottom plate assembly, enabling a welding gun to enter from the bottom of the box body, and completely welding the fillet welds at the inner sides of the top plate, the surrounding plate assembly and the vertical plate assembly to ensure that the fusion depth is more than or equal to 2.5 mm;
installing a bottom plate assembly, enabling a welding gun to enter the box body through a window in the top plate and the surrounding plate assembly, and completely welding the inner side fillet welds of the bottom plate assembly, the surrounding plate assembly and the vertical plate assembly to ensure that the fusion depth is more than or equal to 2.5 mm;
and carrying out laser large-fusion-depth back-sealing welding and laser filler wire cover surface welding on the outer surfaces of the top plate, the enclosing plate assembly and the bottom plate assembly, and ensuring that the fusion depth is more than or equal to 6 mm.
2. The method for preparing a box-shaped structure box according to claim 1, wherein before assembling the top plate, the surrounding plate assembly, the bottom plate assembly and the standing plate assembly to form the box, the method further comprises:
soaking the top plate, the coaming assembly, the bottom plate assembly and the vertical plate assembly in an oil removing groove for 5-25 min;
cleaning the top plate, the coaming assembly, the bottom plate assembly and the vertical plate assembly, and soaking in a mixed acid solution for 0.5-4 min;
cleaning the top plate, the coaming assembly, the bottom plate assembly and the vertical plate assembly for 2-3 times by using clear water at 40-60 ℃;
and drying the top plate, the coaming assembly, the bottom plate assembly and the vertical plate assembly by using clean compressed air for later use.
3. The method for preparing a box-shaped structure box according to claim 1, wherein:
the coaming assembly includes: two end plates and two side plates;
the two end plates are respectively and fixedly arranged at two ends of the two side plates;
the riser subassembly includes: a plurality of vertical plates;
the floor panel assembly includes: the device comprises a bottom plate, two first plates and two second plates;
the two first plates are fixedly arranged on two sides of the bottom plate;
the two second plates are fixedly arranged at two ends of the bottom plate.
4. The method for preparing a box-shaped structure box according to claim 3, wherein the method comprises the following steps:
a plurality of first sinking grooves are formed in the end face, facing the bottom plate, of the top plate;
the middle part of the end surface of the bottom plate facing the top plate is provided with a plurality of second sunken grooves;
the inner walls of the two side plates are respectively provided with a plurality of third sunken grooves, the third sunken grooves correspond to the vertical plates one by one, and the first sunken grooves and the second sunken grooves correspond to the third sunken grooves one by one.
5. The method for preparing a box-shaped structure box according to claim 4, wherein:
and both ends of the first sunken groove and the second sunken groove are plugged.
6. The method for preparing the box-shaped structure box body according to claim 4, wherein the step of assembling the top plate, the coaming assembly, the bottom plate assembly and the vertical plate assembly to form the box body comprises the following steps:
arranging two side plates and two end plates above the top plate;
inserting the vertical plate into the corresponding first sunken groove and the third sunken groove;
and placing the bottom plate above the two side plates and the two end plates, and simultaneously inserting the vertical plates into the corresponding second sunken grooves.
7. The method for preparing a box-shaped structure box according to claim 6, wherein after inserting the vertical plates into the corresponding first sunken grooves, the method further comprises:
and respectively inserting the two positioning core rods into inner holes in the vertical plates to position the vertical plates.
8. The method for preparing a box-shaped structure box according to claim 3, wherein the method comprises the following steps:
the bottom plate is fixedly provided with a round table, a plurality of transverse ribs and a plurality of longitudinal ribs;
the plurality of transverse ribs and the plurality of longitudinal ribs form a cross structure;
the cross position of the longitudinal rib and the cross position of the transverse rib are provided with first notches, the cross position of the transverse rib and the cross position of the longitudinal rib are provided with second notches, and the first notches are embedded into the second notches.
9. The method for preparing a box-shaped structure box according to claim 8, wherein the method comprises the following steps:
an annular groove is formed in the bottom plate;
the circular truncated cone is embedded into the annular groove, and the circular truncated cone is welded with the annular groove.
10. The method for preparing a box-shaped structure box according to claim 1, wherein:
performing positioning welding on the outer surfaces of the top plate and the surrounding plate assembly by adopting laser welding or manual argon tungsten-arc welding;
and all the inner side fillet welds of the top plate, the surrounding plate assembly and the vertical plate assembly are welded by adopting handheld wire-feeding laser welding, and the positions which cannot be reached by the handheld wire-feeding laser welding are welded by adopting manual argon tungsten-arc welding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011636274.1A CN112846502B (en) | 2020-12-31 | 2020-12-31 | Preparation method of box-shaped structure box body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011636274.1A CN112846502B (en) | 2020-12-31 | 2020-12-31 | Preparation method of box-shaped structure box body |
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| CN114193116B (en) * | 2021-12-08 | 2022-11-08 | 四川明日宇航工业有限责任公司 | Precise assembly method for stainless steel box type structural part |
| CN114260572A (en) * | 2021-12-13 | 2022-04-01 | 上海第一机床厂有限公司 | Welding method for nuclear fuel transfer equipment box body |
| CN114248035A (en) * | 2021-12-21 | 2022-03-29 | 江苏拓米洛环境试验设备有限公司 | Welding method for inner box of environmental test chamber |
| CN114309946B (en) * | 2022-01-24 | 2024-02-06 | 大匠激光科技(苏州)有限公司 | Box welding method and storage medium |
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