An aluminum total section closing welding shape control device and welding method

Abstract

The application relates to the technical field of ship welding, and discloses an aluminum total section closing welding shape control device and a welding method. According to the shape and position characteristics of a welding seam in a structure region, a first stiffened plate and a second stiffened plate are correspondingly arranged to constrain the deformation of the welding seam in different structure regions such as flat, curved surfaces, inside and outside of a ship body; meanwhile, the closing surface of the main body part is subjected to segmented welding, and a reasonable welding sequence is planned, so that the deformation at the welding seam can be effectively controlled, the situation that the ship structure strength is weakened and size deviation is caused due to the welding seam deformation is improved, the production efficiency and the welding quality of the aluminum ship body total section closing are improved, the deformation correction operation load is reduced, and the ship construction period is shortened.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ship welding technology, in particular to an aluminum section closing welding shape control device and a welding method. BACKGROUND

[0002] Section closing is a key process of aluminum alloy shipbuilding, and the welding quality of the large joint plays a crucial role in ensuring the structural strength and service performance of the whole ship, and has a great influence on shortening the shipbuilding cycle. During the closing stage of the aluminum alloy section, there is a large joint with multiple spatial position levels, multiple curvature non-planar and narrow characteristics. Due to the bow and stern upwarping and the transverse contraction at the large joint, the overall length of the ship is shortened, the concave-convex deformation occurs at the joint, and the left-right deformation occurs in the ship's longitudinal section, resulting in the weakening of the structural stiffness of the section and the large size deviation. SUMMARY

[0003] The purpose of the present application is to provide an aluminum section closing welding shape control device and a welding method to solve the problem of the existing technology that the welding seam is prone to deformation during the closing welding of the section, resulting in the weakening of the structural stiffness of the section and the large size deviation.

[0004] To achieve the above purpose, in a first aspect, the present application provides an aluminum section closing welding shape control device for assisting the closing welding of two main body parts, comprising:

[0005] A first stiffened plate is arranged perpendicular to the extension direction of the welding seam, the first stiffened plate spans the welding seam, the first stiffened plate is connected perpendicularly to the two main body parts, and a plurality of first stiffened plates are arranged at intervals along the extension direction of the welding seam; and

[0006] A second stiffened plate is arranged on one side of the welding seam, the second stiffened plate extends along the length direction of the welding seam, and the second stiffened plate is connected perpendicularly to one of the main body parts.

[0007] In some embodiments of the present application, the main body part includes a flat outer plate member, the flat outer plate member has a first aggregate near the welding seam, and the first aggregate extends along the length direction of the welding seam.

[0008] The first stiffened plate includes a first flat stiffened plate, and the second stiffened plate includes a second flat stiffened plate; the first flat stiffened plate and the second flat stiffened plate are connected to the non-structural surface of the flat outer plate member, and the two first aggregates on both sides of the welding seam are located on the inner side of the first flat stiffened plate projected in the up-down direction.

[0009] The end of the second flat stiffened plate is connected to the plurality of first flat stiffened plates.

[0010] In some embodiments of the present application, the main body part further comprises a deck structure, and a second reinforcing material is arranged on the structural surface of the deck structure near the weld seam and extends along the length direction of the weld seam.

[0011] The first reinforcing plate comprises a first deck reinforcing plate, and the second reinforcing plate comprises a second deck reinforcing plate; the first deck reinforcing plate is connected to the structural surface of the deck structure and is located between the two second reinforcing materials on both sides of the weld seam.

[0012] The second deck reinforcing plate is connected to the non-structural surface of the deck structure, and the distance between the second deck reinforcing plate and the weld seam is 20 mm.

[0013] In some embodiments of the present application, the main body part further comprises a curved surface outer plate, and a third reinforcing material is arranged on the structural surface of the curved surface outer plate near the weld seam and extends along the length direction of the weld seam.

[0014] The first reinforcing plate comprises a first curved surface reinforcing plate, and the second reinforcing plate comprises a second curved surface reinforcing plate; the first curved surface reinforcing plate is connected to the structural surface of the curved surface outer plate and is located between the two third reinforcing materials on both sides of the weld seam.

[0015] In some embodiments of the present application, the second curved surface reinforcing plate is connected to the non-structural surface of the curved surface outer plate, and the distance between the second curved surface reinforcing plate and the weld seam is 20 mm.

[0016] In some embodiments of the present application, a welding hole is arranged through the thickness direction of the first reinforcing plate, and the welding hole is used to avoid the weld seam between the two main body parts.

[0017] In some embodiments of the present application, the distance between two adjacent first reinforcing plates is 0.4 m-1 m.

[0018] In a second aspect, the embodiments of the present application provide a welding method, which adopts the aluminum total section closing welding shape control device in the above-mentioned embodiments, and comprises the following steps.

[0019] Different reinforcing plate installation schemes are adopted according to the shape and position characteristics of each structural area of the main body part, and the first reinforcing plate and the second reinforcing plate are arranged in each structural area of the main body part according to the predetermined installation scheme.

[0020] The closing surface of the main body part is divided into a bottom section, a side section, a first inner upper deck section, an upper building deck section and an inner lower deck section; and the welding sequence of each section is as follows: bottom section, side section, first inner upper deck section, upper building deck section and inner lower deck section; and the welding is symmetrically performed with respect to the center axis of the total section.

[0021] After the welding is completed, the first stiffened plate and the second stiffened plate are removed.

[0022] In some embodiments of the present application, the converging surface of the main body part further comprises a plurality of first longitudinal wall plate segments connected between the bottom segment and the inner lower deck segment, and two second longitudinal wall plate segments connected between the upper building deck segment and the first inner upper deck segment; a second inner upper deck segment is connected between the second longitudinal wall plate segment and the corresponding side section;

[0023] The welding sequence of the second inner upper deck segment, the first longitudinal wall plate segment and the second longitudinal wall plate segment is: second inner upper deck segment, first longitudinal wall plate segment, and second longitudinal wall plate segment, and the second inner upper deck segment is welded after the inner lower deck segment;

[0024] The bottom segment, the side section, the upper building deck segment, the inner lower deck segment, the first inner upper deck segment and the second longitudinal wall plate segment are all welded by using the middle segment division and segment retreat welding method;

[0025] The second inner upper deck segment and the first longitudinal wall plate segment are both welded by using the middle retreat welding method.

[0026] In some embodiments of the present application, after the welding is completed, the weld is polished, and the first stiffened plate or the second stiffened plate that affects the polishing of the weld is removed.

[0027] In some embodiments of the present application, for the area where the weld is obviously deformed after welding, the first stiffened plate and the second stiffened plate are removed after deformation correction.

[0028] In some embodiments of the present application, when welding each segment, the butt joint of the plate is welded first, and then the bone joint and the corner joint are welded.

[0029] Compared with the prior art, the aluminum segment converging welding shape control device and the welding method have the following beneficial effects: according to the shape and position characteristics of the structure area where the weld is located, the first stiffened plate and the second stiffened plate are correspondingly arranged to constrain the deformation (twisting deformation) of the weld in different structure areas such as flat, curved surface, and inner and outer plates of the ship body; meanwhile, the converging surface of the main body part is segmented and welded, and a reasonable welding sequence is planned, so that the deformation at the weld can be effectively controlled, and the situation that the strength of the ship body structure is weakened and the size deviation is caused due to the weld deformation can be improved, the production efficiency and the welding quality of the aluminum ship body segment convergence are improved, the deformation correction operation load is reduced, and the shipbuilding cycle is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic diagram of the segment convergence welding sequence of the present application;

[0031] Figure 2 Schematic diagram of sub-segmented back step welding for the present application;

[0032] Figure 3 Schematic diagram of main view of flat outer plate piece folding for the present application;

[0033] Figure 4 Schematic diagram of another view of flat outer plate piece folding for the present application;

[0034] Figure 5 Schematic diagram of main view of deck structure piece folding for the present application;

[0035] Figure 6 Schematic diagram of another view of deck structure piece folding for the present application;

[0036] Figure 7 Schematic diagram of main view of curved outer plate piece folding for the present application;

[0037] Figure 8 Schematic diagram of another view of curved outer plate piece folding for the present application.

[0038] In the figure, 1, main body part; 11, flat outer plate piece; 12, first skeleton; 13, deck structure piece; 14, second skeleton; 15, curved outer plate piece; 16, third skeleton; 2, first stiffened plate; 21, first flat stiffened plate; 22, first deck stiffened plate; 23, first curved stiffened plate; 3, second stiffened plate; 31, second flat stiffened plate; 32, second deck stiffened plate; 33, second curved stiffened plate;

[0039] 4, welding hole; 5, folding surface; 51, bottom segment; 52, side segment; 521, first side segment; 522, second side segment; 53, first inner upper deck segment; 54, second inner upper deck segment; 55, upper deck segment; 56, inner lower deck segment; 57, first longitudinal wall plate segment; 58, second longitudinal wall plate segment; 6, welding seam. DETAILED DESCRIPTION

[0040] The specific embodiments of the present application are described in further detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0041] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. It should be understood that the terms "first", "second" and the like are used to describe various information in the present application, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "first" information can also be referred to as "second" information without departing from the scope of the present application, and similarly, the "second" information can also be referred to as "first" information.

[0042] As shown in Figures 3-8 In a first aspect, the embodiments of the present application provide an aluminum section closing welding shape control device for assisting the closing welding of two main parts 1 (two main parts 1 corresponding to two sections of a ship that need to be closing welded), which includes a first stiffened plate 2, the first stiffened plate 2 is arranged along the extension direction of the weld 6 at the closing position of the two main parts 1, the first stiffened plate 2 crosses the weld 6, and the first stiffened plate is respectively connected perpendicularly to the two main parts 1 closing together (the first stiffened plate 2 and the two main parts 1 are connected by welding), and the first stiffened plate 2 is provided with a plurality of first stiffened plates 2, which are arranged in the extension direction of the weld 6; and a second stiffened plate 3, the second stiffened plate 3 is arranged on one side of the weld 6, the second stiffened plate 3 extends along the length direction of the weld 6 at the closing position of the two main parts 1, and the second stiffened plate 3 is connected perpendicularly to one of the main parts 1 (the second stiffened plate 3 and the main part 1 are connected by welding). In this scheme, a plurality of first stiffened plates 2 are arranged at the position of the weld 6 at the closing position of the two main parts 1, the first stiffened plates 2 cross the weld 6 and are respectively connected to the two main parts 1 by welding, and through the cooperation of the plurality of first stiffened plates 2 arranged in the extension direction of the weld 6 and the second stiffened plate 3, the deformation of the weld 6 at the closing position of the two main parts 1 can be inhibited to a certain extent (limiting the distortion of the two main parts after welding at the weld), effectively reducing the deformation amplitude of the weld at the two main parts 1, improving the welding quality, reducing the structure stiffness reduction and the large size deviation caused by the large amplitude deformation at the weld 6, and reducing the post-processing workload for the deformation of the weld 6, and shortening the shipbuilding cycle.

[0043] In some embodiments of the present application, as Figures 3-4As shown, the main body 1 includes a flat outer plate 11 (the bottom plate at the bottom of the main section and the side plates on both sides of the main section are collectively referred to as the flat outer plate 11). The structural surface of the flat outer plate 11 (that is, the interior of the ship; the side of the flat outer plate 11 with the stiffener is called the structural surface, and the structural surface is located on the inner side of the ship) has a first stiffener 12 near the weld 6, and the first stiffener 12 extends along the length of the weld 6; the first stiffening plate 2 includes a first flat stiffening plate 21, and the second stiffening plate 3 includes a second flat stiffening plate 31; the first flat ...21, and the second stiffening plate 3 includes a second flat stiffening plate 21, and the second stiffening plate 3 includes a second flat stiffening plate 21, and the second stiffening plate 3 includes a second flat stiffening plate 21, and the second stiffening plate 3 includes a second flat The stiffening plate 21 and the second straight stiffening plate 31 are both connected to the non-structural surface of the straight outer plate 11 (that is, the exterior of the ship; the side of the straight outer plate 11 without stiffeners is called the non-structural surface). When the two main body parts 1 are joined together, there is a first stiffener 12 on each side of the weld 6. The two first stiffeners 12 on both sides of the weld 6 are located inside the projection of the first straight stiffening plate 21 in the vertical direction, that is, the stiffening plate of the first straight outer plate 11 at least spans the two first stiffeners 12 on both sides of the weld 6 (e.g., Figure 3 (As shown); the second straight stiffening plate 31 is connected to the ends of multiple first straight stiffening plates 21 (by welding); by setting multiple first straight stiffening plates 21 and second straight stiffening plates 31, when the straight outer plates 11 on the two main body parts 1 are closed and welded, the deformation of the weld 6 between the two straight outer plates 11 is effectively constrained (the degree of twisting at the weld of the two straight outer plates 11 is limited), the welding quality is improved, and the amount of unnecessary straightening work in the later stage is reduced.

[0044] In some embodiments of this application, such as Figures 5-6As shown, the main body part 1 further comprises deck structures 13, the structural surface (the surface of the deck structure 13 on which the bone material is installed is referred to as the structural surface, and the surface on which the bone material is not installed is referred to as the non-structural surface) of the deck structure 13 is provided with a second bone material 14 close to the weld 6, and the second bone material 14 extends along the length direction of the weld 6; the first reinforcing plate 2 comprises a first deck reinforcing plate 22, and the second reinforcing plate 3 comprises a second deck reinforcing plate 32; the first deck reinforcing plate 22 is connected to the structural surface of the deck structure 13 (the connection is achieved by welding), and is provided with a second bone material 14 on each side of the weld 6, the first deck reinforcing plate 22 is arranged between the two second bone materials 14, the length of the first deck reinforcing plate 22 is less than or equal to the distance between the two second bone materials 14, and is preferably equal to the distance between the two second bone materials 14 (the deck structure 13 between the two second bone materials 14 is covered as much as possible to improve the constraint effect on the deformation of the weld 6 at the welding position of the two deck structures 13); the second deck reinforcing plate 32 is welded to the non-structural surface of the deck structure 13 (the surface of the deck structure 13 on which the bone material is not installed), and the distance between the second deck reinforcing plate 32 and the weld 6 is 20 mm; by arranging the plurality of first deck reinforcing plates 22 and the second deck reinforcing plates 32, the deformation of the weld 6 between the two deck structures 13 is effectively constrained (the degree of twisting of the welding position of the two deck structures 13 is limited) when the two deck structures 13 on the two main body parts 1 are folded and welded, the welding quality is improved, and the amount of unnecessary straightening operation in the later stage is reduced.

[0045] In some embodiments of the present application, as Figures 7-8As shown, the main body part 1 further comprises a curved outer plate member 15 (the connection between the deck structure member 13 and the side plate is referred to as the curved outer plate member 15), and the third reinforcing material 16 is arranged on the structural surface (the inner surface of the ship and the surface on which the reinforcing material is arranged) of the curved outer plate member 15 close to the welding seam 6, and the third reinforcing material 16 extends along the length direction of the welding seam 6; the first reinforcing plate 2 comprises a first curved reinforcing plate 23, and the second reinforcing plate 3 comprises a second curved reinforcing plate 33, the first curved reinforcing plate 23 is connected to the structural surface of the curved outer plate member 15 (welded connection), the first curved reinforcing plate 23 is arranged between the two third reinforcing materials 16 on both sides of the welding seam 6, the length of the first curved reinforcing plate 23 is less than or equal to the distance between the two third reinforcing materials 16, and preferably equal to the distance between the two third reinforcing materials 16 (the curved outer plate member 15 between the two third reinforcing materials 16 is covered as much as possible to improve the constraint effect on the deformation of the welding seam 6 at the welding position of the two curved outer plate members 15); the second curved reinforcing plate 33 is welded to the non-structural surface (the outer surface of the ship) of the curved outer plate member 15, and the distance between the second curved reinforcing plate 33 and the welding seam 6 is 20 mm; by arranging the plurality of first curved reinforcing plates 23 and the second curved reinforcing plate 33, the deformation of the welding seam 6 between the two curved outer plate members 15 is effectively constrained when the two curved outer plate members 15 on the two main body parts 1 are welded (the degree of twisting of the welding position of the two curved outer plate members 15 is limited, the welding quality is improved, and the amount of subsequent rectification operation is reduced.

[0046] In some embodiments of the present application, as shown in Figure 3 、 Figure 5 、 Figure 7 As shown, the welding hole 4 is arranged through the thickness direction of the first reinforcing plate 2, and the welding hole 4 is used to avoid the welding seam 6 between the two main body parts 1, and also helps to polish the welding seam 6 passing through the first reinforcing plate 2 after welding, which is convenient for workers to work.

[0047] In some embodiments of the present application, the distance between the two adjacent first reinforcing plates 2 is 0.4 m-1 m.

[0048] In the second aspect, as shown in Figures 1-2 The present application provides a welding method, which adopts the aluminum section closing welding shape control device in the above embodiments, and comprises the following steps:

[0049] First, different reinforcing plate mounting schemes are adopted according to the shape and position characteristics of each structural area of the main body part 1, and the first reinforcing plate 2 and the second reinforcing plate 3 are arranged in each structural area of the main body part 1 according to the predetermined mounting scheme (the arrangement mode in the above embodiments).

[0050] The joining surface 5 of the main body 1 is divided into a bottom section 51, a side section 52, a first inner upper deck section 53, a superstructure deck section 55, and an inner lower deck section 56. The welding sequence of each part is as follows: bottom section 51, side section 52, first inner upper deck section 53, superstructure deck section 55, and inner lower deck section 56. When welding each of the above parts, the welding is carried out simultaneously and symmetrically with the centerline of the main section as the line of symmetry to ensure the uniformity of stress on each part during the welding of the main section.

[0051] After welding is completed, the first stiffening plate 2 and the second stiffening plate 3 are removed.

[0052] In some embodiments of this application, the joining surface 5 of the main body 1 further includes multiple first longitudinal bulkhead sections 57 connecting the bottom section 51 and the inner lower deck section 56, and two second longitudinal bulkhead sections 58 connecting the superstructure section 55 and the first inner upper deck section 53; the first longitudinal bulkhead sections 57 and the second longitudinal bulkhead sections 58 are symmetrically arranged about the central axis of the main section; a second inner upper deck section 54 is connected between the second longitudinal bulkhead section 58 and its corresponding side section 52; the welding sequence of the second inner upper deck section 54, the first longitudinal bulkhead section 57, and the second longitudinal bulkhead section 58 is as follows: second inner upper deck section 54, first longitudinal bulkhead section 57, second longitudinal bulkhead section 58, with the second inner upper deck section 54 welded after the inner lower deck section 56. The deck structure 13 in the above embodiments includes the superstructure section 55, the inner lower deck section 56, the first inner upper deck section 53, and the second inner upper deck section 54.

[0053] like Figure 2 The diagram illustrates the segmented back-welding method, where the area to be welded is divided into two symmetrical parts (each welded simultaneously by two welders). Each part is further divided into multiple segments for welding. The back-welding method is used for each segment. This embodiment uses welder 1 as an example: Welder 1 and welder 2 weld in opposite directions (arrows in the diagram indicate the welders' overall direction). When welding the first segment, welder 1 starts from the end of the first segment closest to the second segment and welds towards the central axis. After completing the first segment, welder 1 moves to the end of the second segment closest to the third segment and welds towards the first segment. Similarly, after completing the second segment, the same welding method is followed when welding the third segment.

[0054] like Figure 1 As shown, the bottom section 51, the side section 52, the superdeck section 55, the inner lower deck section 56, the first inner upper deck section 53, and the second longitudinal bulkhead section 58 are all welded using the segmented back-welding method. Figure 1 The numbers (1, 2, 3, 4...) represent each small segment, and the corresponding number represents the welding sequence for each small segment. ， 2 ，, 3 ， , 4 ， ......indicates welding at the same time as 1, 2, 3, 4......). When welding the bottom section 51: the bottom section 51 is divided into 1 section, 2 section, 1 ， section, 2 ， section, where the direction indicated by the arrow is the overall direction of the welder (that is, the overall welding direction of the weld 6), one welder welds the 1 section and the 2 section, and another welder welds the 1 ， section and the 2 ， section, and the welding is performed symmetrically with the center axis of the total section, when welding the 1 section, the welder first welds from the 1 section close to the 2 section towards the center axis of the total section, and after completing the welding of the 1 section, the welder moves to the 2 section away from one end of the 1 section and welds towards the center axis of the total section (the welding method of the other welder is the same, and is not described in detail here).

[0055] When welding the side section 52: the side section 52 is divided into 3 sections (corresponding to the second side section 522), 4 sections (corresponding to the first side section 521), 3 ， sections (corresponding to the second side section 522), 4 ， sections (corresponding to the first side section 521), where the direction indicated by the arrow is the overall welding direction of the weld 6, the welder first welds from the 3 section away from one end of the 4 section towards the 4 section, and after completing the welding of the 3 section, the welder welds from the 4 section close to one end of the 3 section towards the end away from the 3 ， section and the 4 ， section on the other side, and the welding method is the same, and is not described in detail here).

[0056] When welding the first inner upper deck section 53: the first inner upper deck section 53 is divided into 5 sections, 6 sections, 5 ， sections, 6 ， sections, where the direction indicated by the arrow is the overall welding direction of the weld 6, one welder welds the 5 section and the 6 section, and another welder welds the 5 ， section and the 6 ， section, and the welding is performed symmetrically with the center axis of the total section, when welding the 5 section, the welder first welds from the 5 section close to the 6 section towards the center axis of the total section, and after completing the welding of the 5 section, the welder moves to the 6 section away from one end of the 5 section and welds towards the center axis of the total section (the welding method of the other welder is the same, and is not described in detail here).

[0057] When welding the upper building deck section 55: the upper building deck section 55 is divided into 7 sections, 8 sections, 7 ， sections, 8 ，The arrows indicate the overall welding direction of weld 6. One welder welds segments 5 and 6, while another welder welds segment 7. ， Section 8 ， Welding is carried out on segments simultaneously and symmetrically along the central axis of the main segment. When welding segment 7, the welder first starts from the segment 7 near segment 8 and welds towards the central axis of the main segment. After the welding of segment 7 is completed, the welder moves to the segment 8 away from segment 7 and welds towards the central axis of the main segment (the other welder's welding method is the same, which will not be described in detail here).

[0058] When welding the inner lower deck section 56: the inner lower deck section 56 is divided into 9 sections, 10 sections, and 9... ， Section 10 ， The arrows indicate the overall welding direction of weld 6. One welder welds segments 9 and 10, while another welder welds segment 9. ， Section 10 ， Welding is carried out on segments simultaneously, symmetrically along the central axis of the main segment. When welding segment 9, the welder first starts from segment 9 near segment 10 and welds towards the central axis of the main segment. After completing the welding of segment 9, the welder moves to segment 10 away from segment 9 and welds towards the central axis of the main segment (the other welder uses the same method, which will not be described in detail here).

[0059] When welding the second longitudinal wall plate segment 58, the second longitudinal wall plate segment 58 is divided into 16 segments, 17 segments, and 16... ， Section 17 ， The arrows indicate the overall welding direction of weld 6. The welder first welds from the end of segment 16 furthest from segment 17 towards segment 17. After completing the welding of segment 16, the welder then welds from the end of segment 17 closest to segment 16 towards the end furthest from segment 16 (another welder uses the same method on the other side of segment 16). ， Section 17 ， Welding will be carried out on this section, which will not be described in detail here.

[0060] When welding the second inner upper deck section 54 and multiple first longitudinal bulkhead sections 57, due to their short length, a segmented back-welding method is used. This means that instead of dividing them into multiple sections for welding, they are welded as a single, continuous section (segmented back-welding method). Specifically, when welding the second inner upper deck section 54, it is divided into 11 sections... ， In each section, two welders weld symmetrically along the central axis of the main section. When welding section 11, the welder starts from the end of section 11 away from the second longitudinal wall plate section 58 and moves towards the central axis of the main section (the other welder uses the same method to weld section 11 on the other side, which will not be described in detail here).

[0061] When welding the first longitudinal wall plate segment 57, since the first longitudinal wall plate segment 57 is provided with multiple segments, the first longitudinal wall plate segment 57 is divided into 12 segments, 13 segments, 14 segments, 15 segments, 12 ， segments, 13 ， segments, 14 ， segments, 15 ， segments, respectively, wherein the 12 segments, 13 segments, 14 segments, 15 segments (12 ， segments, 13 ， segments, 14 ， segments, 15 ， segments) are sequentially and spacedly arranged towards the direction away from the central axis of the total segment; the welder first welds the 12 segments, when welding the 12 segments, the welder welds from the end close to the inner lower deck segment 56 to the end of the bottom segment 51; then sequentially welds the 13 segments, 14 segments, 15 segments (the welding method is the same as that of the 12 segments). When welding the 12 ， segments, the welder welds from the end close to the inner lower deck segment 56 to the end of the bottom segment 51; then sequentially welds the 13 ， segments, 14 ， segments, 15 ， segments (the welding method is the same as that of the 12 ， segments).

[0062] In some embodiments of the present application, the first reinforcing plate 2 or the second reinforcing plate 3 which affects the grinding of the weld 6 needs to be removed after welding.

[0063] In some embodiments of the present application, for the area where the weld 6 is obviously deformed after welding, the first reinforcing plate 2 and the second reinforcing plate 3 are removed after deformation correction; in the present scheme, all the first reinforcing plates 2 and the second reinforcing plates 3 need to be removed after the final closing.

[0064] In some embodiments of the present application, when welding a single segment, the butt joint between the corresponding plates should be welded first, and then the joints between the bones and the corner joints are welded.

[0065] In summary, the embodiment of the present application provides an aluminum total segment closing welding shape control device and a welding method, the present scheme sets the first reinforcing plate 2 and the second reinforcing plate 3 according to the different areas where the weld 6 is located, for constraining the deformation of the weld 6 in different areas; at the same time, the closing surface 5 of the main body 1 is welded in segments, and a reasonable welding sequence is planned, so that the deformation at the weld 6 can be effectively controlled, thereby improving the situation that the ship structure strength is weakened and the size deviation is caused due to the deformation of the weld 6, improving the production efficiency and welding quality of the total segment closing, reducing the deformation correction operation load, and shortening the ship construction period.

[0066] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A device for controlling the shape of a lap weld of an aluminum section, for assisting the lap welding of two main parts (1), characterized in that, The application relates to a welding structure of a ship body, which comprises: a first stiffened plate (2) arranged along the direction perpendicular to the extension direction of a welding seam (6), the first stiffened plate (2) crossing the welding seam (6), the first stiffened plate (2) being vertically connected to two body parts (1), and a plurality of the first stiffened plates (2) being arranged along the extension direction of the welding seam (6) at intervals; and a second stiffened plate (3) arranged on one side of the welding seam (6), the second stiffened plate (3) extending along the length direction of the welding seam (6), and the second stiffened plate (3) being vertically connected to one of the body parts (1).

2. The shape control device for closure welding of an aluminum segment according to claim 1, wherein The body part (1) comprises a flat outer plate member (11), the structural surface of the flat outer plate member (11) being provided with a first reinforcing material (12) near the welding seam (6), and the first reinforcing material (12) extending along the length direction of the welding seam (6). The first stiffened plate (2) comprises a first flat stiffened plate (21), and the second stiffened plate (3) comprises a second flat stiffened plate (31); the first flat stiffened plate (21) and the second flat stiffened plate (31) are connected to the non-structural surface of the flat outer plate member (11), and the two first reinforcing materials (12) on the two sides of the welding seam (6) are located on the inner side of the first flat stiffened plate (21) in the up-down direction. The second flat stiffened plate (31) is connected to the end of the plurality of first flat stiffened plates (21).

3. The shape control device for closure welding of an aluminum segment according to claim 1, wherein The body part (1) further comprises a deck structure member (13), the structural surface of the deck structure member (13) is provided with a second reinforcing material (14) near the welding seam (6), and the second reinforcing material (14) extends along the length direction of the welding seam (6). The first stiffened plate (2) comprises a first deck stiffened plate (22), and the second stiffened plate (3) comprises a second deck stiffened plate (32); the first deck stiffened plate (22) is connected to the structural surface of the deck structure member (13), and the first deck stiffened plate (22) is located between the two second reinforcing materials (14) on the two sides of the welding seam (6). The second deck stiffened plate (32) is connected to the non-structural surface of the deck structure member (13), and the distance between the second deck stiffened plate (32) and the welding seam (6) is 20 mm.

4. The closure welding shape control device for aluminum segment according to claim 1, characterized in that, The body part (1) further comprises a curved outer plate member (15), the structural surface of the curved outer plate member (15) is provided with a third reinforcing material (16) near the welding seam (6), and the third reinforcing material (16) extends along the length direction of the welding seam (6). The first stiffened plate (2) comprises a first curved stiffened plate (23), and the second stiffened plate (3) comprises a second curved stiffened plate (33); the first curved stiffened plate (23) is connected to the structural surface of the curved outer plate member (15), and the first curved stiffened plate (23) is located between the two third reinforcing materials (16) on the two sides of the welding seam (6). The second curved stiffened plate (33) is connected to the non-structural surface of the curved outer plate member (15).

5. The shape control device for closure welding of an aluminum segment according to claim 4, wherein The distance between the second curved stiffened plate (33) and the weld (6) is 20 mm.

6. The closure welding shape control device for an aluminum segment according to claim 1, characterized in that, A welding hole (4) is provided through the thickness direction of the first stiffened plate (2) to avoid the weld (6) between the two main body parts (1).

7. The closure welding shape control device for an aluminum segment according to claim 1, characterized in that, The distance between two adjacent first stiffened plates (2) is 0.4-1 m.

8. A welding method using the welding control device according to any one of claims 1 to 7, wherein The method comprises the following steps: Different installation schemes of the stiffened plate are adopted according to the shape and position characteristics of each structural area of the main body part (1), and the first stiffened plate (2) and the second stiffened plate (3) are arranged in each structural area of the main body part (1) according to the predetermined installation scheme; The closure surface (5) of the main body part (1) is divided into a bottom section (51), a side section (52), a first inner upper deck section (53), an upper deck section (55), and an inner lower deck section (56); the welding sequence of each section is as follows: the bottom section (51), the side section (52), the first inner upper deck section (53), the upper deck section (55), and the inner lower deck section (56); and the welding is symmetrically performed with respect to the center axis of the total section; After the welding is completed, the first stiffened plate (2) and the second stiffened plate (3) are removed.

9. The welding method of claim 8, wherein, The closure surface (5) of the main body part (1) further comprises a plurality of first longitudinal wall plate sections (57) connected between the bottom section (51) and the inner lower deck section (56), and two second longitudinal wall plate sections (58) connected between the upper deck section (55) and the first inner upper deck section (53); the second longitudinal wall plate section (58) is connected with a second inner upper deck section (54) between the corresponding side section (52); The welding sequence of the second inner upper deck section (54), the first longitudinal wall plate section (57), and the second longitudinal wall plate section (58) is as follows: the second inner upper deck section (54), the first longitudinal wall plate section (57), and the second longitudinal wall plate section (58), and the welding of the second inner upper deck section (54) is performed after the welding of the inner lower deck section (56); The bottom section (51), the side section (52), the upper deck section (55), the inner lower deck section (56), the first inner upper deck section (53), and the second longitudinal wall plate section (58) are welded by using the middle section division and back welding method. The second inner upper deck section (54) and the first longitudinal wall plate section (57) are welded by using the middle section division and back welding method.

10. The welding method of claim 8, wherein, After the welding is completed, the weld (6) is polished, and the first stiffened plate (2) or the second stiffened plate (3) that affects the polishing of the weld (6) is removed.

11. The welding method of claim 8, wherein, For the area where the weld (6) is obviously deformed after welding, the first stiffened plate (2) and the second stiffened plate (3) are removed after deformation correction.

12. The welding method of claim 8, wherein, For welding of each section, the plate butt joint is welded first, and then the bone joint and the corner joint are welded.

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