A method of welding a marine aluminum alloy stringer panel having a reinforcing structure

Abstract

The present application relates to the shipbuilding technical field, disclose a kind of welding method of marine aluminum alloy ribbed plate with reinforcing structure, multiple ribbed unit plate is welded into ribbed plate;Transverse reinforcing profile is welded in reinforcing rib;Longitudinal reinforcing profile is arranged on the first overpass, the transverse profile unit on the first side of the first overpass is full-welded with longitudinal reinforcing profile, the transverse profile unit on the second side of the first overpass is spot-welded with longitudinal reinforcing profile;Beam is arranged on the second overpass, the longitudinal profile unit on the first side of the second overpass is full-welded with beam, the longitudinal profile unit on the second side of the second overpass is spot-welded with beam;The both ends of the saddle rib are welded on the reinforcing rib of adjacent ribbed unit plate;After ribbed plate is fixed by constraint welding on section or total section, the transverse profile unit on the second side of the first overpass is full-welded with longitudinal reinforcing profile, the longitudinal profile unit on the second side of the second overpass is full-welded with beam.The present application can reduce welding deformation, effectively control overall deformation condition.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shipbuilding technology, in particular to a welding method of an aluminum alloy stiffened plate with a reinforcing structure for a ship. BACKGROUND

[0002] Aluminum alloy has excellent physical and chemical properties and mechanical properties, low density, high specific strength, strong corrosion resistance, and has been widely used in the field of shipbuilding industry, especially in the construction of aluminum ships, to meet the requirements of high speed and light weight, but compared with steel materials, the high thermal conductivity and large thermal expansion coefficient of aluminum alloy lead to different forms of deformation in a large number of welding processes. The aluminum alloy stiffened plate refers to a composite plate formed by pressing or welding a plate and a reinforcing rib into one body, which is composed of a reinforcing rib (rib plate) and a plate. Its superior structural mechanics performance, material uniformity and process applicability, aluminum alloy stiffened plate plays a leading role in the construction of small and medium-sized aluminum alloy ships at present. In actual construction, the deck, longitudinal bulkhead plate, and outer plate of the ship body need to be welded with reinforcing structures on the stiffened plate to enhance its strength, but the welding method, sequence, parameters, and construction personnel level during the welding process can cause the stiffened plate to deform, thereby affecting the installation of the subsequent longitudinal and transverse bulkhead structures of the ship body. SUMMARY

[0003] The purpose of the present application is to provide a welding method of an aluminum alloy stiffened plate with a reinforcing structure for a ship, which can reduce welding deformation and effectively control overall deformation.

[0004] In order to achieve the above-mentioned purpose, the present application provides a welding method of an aluminum alloy stiffened plate with a reinforcing structure for a ship, comprising the following steps:

[0005] Step 1, preparing a stiffened unit plate, a transverse reinforcing profile, a longitudinal reinforcing profile, a crossbeam and a riding rib, the transverse reinforcing profile, the longitudinal reinforcing profile, the crossbeam and the riding rib constitute a reinforcing structure; wherein the stiffened unit plate and the reinforcing structure are both aluminum alloy materials, the stiffened unit plate includes a plate and a plurality of reinforcing ribs arranged on the plate, and the reinforcing ribs are longitudinally arranged on the plate;

[0006] Step 2, butt welding the four side edges of the plate of the plurality of stiffened unit plates to form a stiffened plate, and the reinforcing ribs on each stiffened unit plate extend along the longitudinal direction of the stiffened plate;

[0007] Step 3, the bottom surface of the transverse reinforcing profile is transversely welded along the ribbed plate on the top surface of the reinforcing rib, and the length of the transverse reinforcing profile is the same as the transverse length of the ribbed plate, the transverse reinforcing profile is provided with a plurality of groups and is spaced along the longitudinal direction of the ribbed plate and is welded on the reinforcing rib of the ribbed plate, each group of transverse reinforcing profiles comprises a plurality of transverse profile units, and a first overlap is reserved between adjacent two transverse profile units for welding with the longitudinal reinforcing profile;

[0008] Step 4, the longitudinal reinforcing profile is arranged on the first overlap of the transverse reinforcing profile along the longitudinal direction of the ribbed plate, and the length of the longitudinal reinforcing profile is the same as the longitudinal length of the ribbed plate, the longitudinal reinforcing profile is provided with a plurality of groups and is spaced along the transverse direction of the ribbed plate, the end of the transverse profile unit on the first side of each first overlap is fully welded with the longitudinal reinforcing profile, the end of the transverse profile unit on the second side of each first overlap is spot welded with the longitudinal reinforcing profile, each group of longitudinal reinforcing profiles comprises a plurality of longitudinal profile units, and a second overlap is reserved between adjacent two longitudinal profile units for welding with the beam;

[0009] Step 5, the beam is arranged on the second overlap of the longitudinal reinforcing profile along the transverse direction of the ribbed plate, and the length of the beam is the same as the transverse length of the ribbed plate, the beam is provided with a plurality of groups and is spaced along the longitudinal direction of the ribbed plate, the end of the longitudinal profile unit on the first side of each second overlap is fully welded with the beam, and the end of the longitudinal profile unit on the second side of each second overlap is spot welded with the beam;

[0010] Step 6, the two ends of the rider rib are respectively welded on the top surface of the reinforcing rib of the front and rear adjacent two ribbed unit plates, and when all the rider ribs are welded, the welders symmetrically weld from the middle of the ribbed plate to the four sides of the ribbed plate; after the rider rib welding on all the reinforcing ribs is completed, the slow-welded aluminum alloy ribbed plate with a reinforcing structure for ships is formed;

[0011] Step 7, during the ship section construction or the ship total section construction, after the slow-welded aluminum alloy ribbed plate with a reinforcing structure for ships in the step 5 is fixed by constraint welding on the section or the total section, the end of the transverse profile unit on the second side of each first overlap in the step 4 is fully welded with the longitudinal reinforcing profile, and the end of the longitudinal profile unit on the second side of each second overlap in the step 5 is fully welded with the beam.

[0012] As a preferred scheme of the present application, the transverse reinforcing profile is in an I shape, the longitudinal reinforcing profile and the beam are both in a T shape, and the longitudinal reinforcing profile and the beam both comprise a panel at the upper part and a web arranged at the bottom of the panel; the end of the transverse profile unit is welded with the web of the longitudinal reinforcing profile; and the end of the longitudinal profile unit is welded with the web of the beam.

[0013] As a preferred scheme of the present application, in step 3, the first reinforcing rib is welded between the front and rear sides of the transverse reinforcing profile and the top surface of the reinforcing rib, and the first reinforcing rib is parallel to the reinforcing rib.

[0014] As a preferred scheme of the present application, in step 4, the second reinforcing rib is welded between the left and right sides of the longitudinal reinforcing profile and the top surface of the transverse reinforcing profile, and the second reinforcing rib is parallel to the transverse reinforcing profile.

[0015] As a preferred scheme of the present application, in step 5, the third reinforcing rib is welded between the web of the longitudinal profile unit and the web of the crossbeam, and the third reinforcing rib is parallel to the plate of the ribbed unit plate.

[0016] As a preferred scheme of the present application, in step 5, the third reinforcing rib on the first side close to the second overlap is fully welded to the web of the longitudinal profile unit and the web of the crossbeam, and the third reinforcing rib on the second side close to the second overlap is spot welded to the web of the longitudinal profile unit and the web of the crossbeam; in step 7, the third reinforcing rib on the second side close to the second overlap is fully welded to the web of the longitudinal profile unit and the web of the crossbeam.

[0017] As a preferred scheme of the present application, in step 6, each haunch is welded from the middle to both ends and simultaneously symmetrically welded on the two reinforcing ribs.

[0018] As a preferred scheme of the present application, the axis of the transverse reinforcing profile does not coincide with the projection of the axis of the crossbeam.

[0019] Compared with the prior art, the welding method of the ship aluminum alloy ribbed plate with a reinforcing structure has the following beneficial effects:

[0020] The welding method of the ship aluminum alloy ribbed plate with a reinforcing structure optimizes the welding process of the reinforcing structure on the ship aluminum alloy ribbed plate, adopts the local slow welding welding method of one side full welding and the other side spot welding at the first overlap and the second overlap, forms the welding constraint of the slow-welded ship aluminum alloy ribbed plate with a reinforcing structure on the section or the total section, and then fully welds the spot welding area at the first overlap and the second overlap, thereby effectively controlling the overall deformation of the ship aluminum alloy ribbed plate with a reinforcing structure, symmetrically welding the haunch from the middle to the periphery to reduce the welding deformation, and effectively avoiding the deformation of the ribbed plate after welding. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.

[0022] Figure 1 is a structural schematic diagram of the ship aluminum alloy ribbed plate with a reinforcing structure provided by the present application.

[0023] Figure 2 is a top view of the connecting structure of the cross beam and the longitudinal reinforcing profile provided by the present application;

[0024] Figure 3 is a side view of the connecting structure of the cross beam and the longitudinal reinforcing profile provided by the present application;

[0025] Figure 4 is a structural schematic diagram of the stud in the ribbed plate provided by the present application;

[0026] Figure 5 is a connecting structure diagram of the stud and the reinforcing rib provided by the present application;

[0027] In the figure, the ribbed unit plate 1; the plate material 11; the four side edges 111 of the plate material; the reinforcing rib 12; the first reinforcing rib 13; the cross reinforcing profile 2; the cross profile unit 21; the first through opening 22; the second reinforcing rib 23; the longitudinal reinforcing profile 3; the longitudinal profile unit 31; the second through opening 32; the third reinforcing rib 33; the cross beam 4; the stud 5. DETAILED DESCRIPTION

[0028] 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.

[0029] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", etc. indicate 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 devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0030] As shown in Figures 1-5 , a welding method of an aluminum alloy ribbed plate with a reinforcing structure for a ship according to a preferred embodiment of the present application,

[0031] Step 1, prepare the ribbed unit plate 1, the cross reinforcing profile 2, the longitudinal reinforcing profile 3, the cross beam 4 and the stud 5, the cross reinforcing profile 2, the longitudinal reinforcing profile 3, the cross beam 4 and the stud 5 constitute the reinforcing structure; wherein the ribbed unit plate 1 and the reinforcing structure are both aluminum alloy materials, the ribbed unit plate 1 includes a plate material 11 and a plurality of reinforcing ribs 12 arranged on the plate material 11, the reinforcing ribs 12 are longitudinally arranged on the plate material 11;

[0032] Step 2, butt weld the four side edges of the plate material 11 of the plurality of ribbed unit plates 1 to form a ribbed plate, the reinforcing ribs 12 on each ribbed unit plate 1 extend along the longitudinal direction of the ribbed plate;

[0033] Step 3, the bottom surface of the transverse reinforcement profile 2 is transversely welded on the top surface of the reinforcement rib 12, and the length of the transverse reinforcement profile 2 is the same as the transverse length of the ribbed plate, the transverse reinforcement profile 2 is provided with a plurality of groups and is welded on the reinforcement rib 12 of the ribbed plate along the longitudinal direction of the ribbed plate, each group of transverse reinforcement profiles 2 includes a plurality of transverse profile units 21, and a first gap 22 is reserved between two adjacent transverse profile units 21 for welding with the longitudinal reinforcement profile 3;

[0034] Step 4, the longitudinal reinforcement profile 3 is arranged on the first gap 22 of the transverse reinforcement profile 2 along the longitudinal direction of the ribbed plate, and the length of the longitudinal reinforcement profile 3 is the same as the longitudinal length of the ribbed plate, the longitudinal reinforcement profile 3 is provided with a plurality of groups and is arranged along the transverse direction of the ribbed plate, the end of the transverse profile unit 21 on the first side of each first gap 22 is fully welded with the longitudinal reinforcement profile 3, the end of the transverse profile unit 21 on the second side of each first gap 22 is spot welded with the longitudinal reinforcement profile 3, and each group of longitudinal reinforcement profiles 3 includes a plurality of longitudinal profile units 31, and a second gap 32 is reserved between two adjacent longitudinal profile units 31 for welding with the cross beam 4;

[0035] As shown in Figures 2-3 Step 5, the cross beam 4 is arranged on the second gap 32 of the longitudinal reinforcement profile 3 along the transverse direction of the ribbed plate, and the length of the cross beam 4 is the same as the transverse length of the ribbed plate, the cross beam 4 is provided with a plurality of groups and is arranged along the longitudinal direction of the ribbed plate, the end of the longitudinal profile unit 31 on the first side of each second gap 32 is fully welded with the cross beam 4, and the end of the longitudinal profile unit 31 on the second side of each second gap 32 is spot welded with the cross beam 4;

[0036] Step 6, the two ends of the reinforcement rib 5 are respectively welded on the top surface of the reinforcement rib 12 of the adjacent front and rear ribbed unit plates 1, as shown in Figure 4 When all the reinforcement ribs 5 are welded, the even-numbered welders symmetrically weld from the middle of the ribbed plate to the four sides of the ribbed plate; after the welding of the reinforcement ribs 5 on all the reinforcement ribs 12 is completed, the slow-welded aluminum alloy ribbed plate with a reinforcing structure for ships is formed; the arrangement of the reinforcement rib 5 can increase the connection stability of the adjacent ribbed unit plates 1;

[0037] Step 7, during the ship section construction or the ship total section construction, after the slow-welded aluminum alloy ribbed plate with a reinforcing structure for ships in the step 5 is fixed by constraint welding on the section or the total section, the end of the transverse profile unit 21 on the second side of each first gap 22 in the step 4 is fully welded with the longitudinal reinforcement profile 3, and the end of the longitudinal profile unit 31 on the second side of each second gap 32 in the step 5 is fully welded with the cross beam 4.

[0038] The application optimizes the welding process of the reinforcing structure on the ship aluminum alloy stiffened plate, adopts the local slow welding welding method of one side full welding and the other side spot welding at the first overlap 22 and the second overlap 32, and then full welds the spot welding area at the first overlap 22 and the second overlap 32 after the slow welding of the ship aluminum alloy stiffened plate with the reinforcing structure is formed on the section or the total section, so that the overall deformation of the ship aluminum alloy stiffened plate with the reinforcing structure is effectively controlled, the symmetric welding of the saddle rib 5 from the middle to the four sides is reduced, the deformation after the welding of the stiffened plate is effectively avoided, the overall precision is better controlled, and the rework workload caused by the deformation of the ship aluminum alloy stiffened plate with the reinforcing structure is greatly reduced, and the construction efficiency is improved.

[0039] In the embodiment, the transverse reinforcing profile 2 is in the shape of an I-beam, the longitudinal reinforcing profile 3 and the cross beam 4 are in the shape of a T-beam, the longitudinal reinforcing profile 3 and the cross beam 4 each include a face plate at the upper part and a web plate arranged at the bottom of the face plate; the end of the transverse profile unit 21 is welded with the web plate of the longitudinal reinforcing profile 3; and the end of the longitudinal profile unit 31 is welded with the web plate of the cross beam 4.

[0040] Exemplarily, in step 3, the first reinforcing rib 13 is welded between the front and rear sides of the transverse reinforcing profile 2 and the top surface of the reinforcing rib 12 respectively, the first reinforcing rib 13 is parallel to the reinforcing rib 12, and the structural strength and connection stability between the transverse reinforcing profile 2 and the reinforcing rib 12 are improved.

[0041] Exemplarily, in step 4, the second reinforcing rib 23 is welded between the left and right sides of the longitudinal reinforcing profile 3 and the top surface of the transverse reinforcing profile 2 respectively, the second reinforcing rib 23 is parallel to the transverse reinforcing profile 2, and the structural strength and connection stability between the longitudinal reinforcing profile 3 and the transverse reinforcing profile 2 are improved.

[0042] Exemplarily, in step 5, the third reinforcing rib 33 is welded between the web plate of the longitudinal profile unit 31 and the web plate of the cross beam 4, the third reinforcing rib 33 is parallel to the plate 11 of the stiffened unit plate 1, the structural strength and connection stability between the longitudinal profile unit 31 and the cross beam 4 are improved, the third reinforcing rib 33 on the first side close to the second overlap 32 is full-welded on the web plate of the longitudinal profile unit 31 and the web plate of the cross beam 4, and the third reinforcing rib 33 on the second side close to the second overlap 32 is spot-welded on the web plate of the longitudinal profile unit 31 and the web plate of the cross beam 4; in step 7, the third reinforcing rib 33 on the second side close to the second overlap 32 is full-welded on the web plate of the longitudinal profile unit 31 and the web plate of the cross beam 4.

[0043] Exemplarily, as shown in Figure 5 step 6, each saddle rib 5 is symmetrically welded on the two reinforcing ribs 12 from the middle to the two ends at the same time, and the welding deformation is further reduced.

[0044] Specifically, the axis of the transverse reinforcing profile 2 does not coincide with the projection of the axis of the crossbeam 4, ensuring the structural strength of the overall marine aluminum alloy stiffened plate with reinforcing structure.

[0045] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A welding method for a marine aluminum alloy stiffened plate with a reinforced structure, characterized in that, Includes the following steps: Step 1: Prepare the reinforced unit panel, horizontal reinforcing profile, vertical reinforcing profile, crossbeam and rib. The horizontal reinforcing profile, vertical reinforcing profile, crossbeam and rib constitute the reinforcing structure. The reinforced unit panel and the reinforcing structure are both made of aluminum alloy. The reinforced unit panel includes a plate and multiple reinforcing ribs arranged at intervals on the plate. The reinforcing ribs extend longitudinally on the plate. Step 2: Weld the four edges of multiple reinforced unit plates together to form a reinforced plate. The reinforcing ribs on each reinforced unit plate extend longitudinally along the plate. Step 3: Weld the bottom surface of the transverse reinforcing profile to the top surface of the reinforcing rib along the transverse direction of the stiffening plate, and the length of the transverse reinforcing profile is the same as the transverse length of the stiffening plate. The transverse reinforcing profile is provided in multiple sets and is welded to the stiffening rib of the stiffening plate at intervals along the longitudinal direction of the stiffening plate. Each set of transverse reinforcing profiles includes multiple transverse profile units. A first passage is reserved between two adjacent transverse profile units for welding with the longitudinal reinforcing profile. Step 4: The longitudinal reinforcing profile is set along the longitudinal direction of the stiffening plate on the first passage of the transverse reinforcing profile, and the length of the longitudinal reinforcing profile is the same as the longitudinal length of the stiffening plate. There are multiple sets of longitudinal reinforcing profiles arranged at intervals along the transverse direction of the stiffening plate. The end of the transverse profile unit on the first side of each first passage is fully welded to the longitudinal reinforcing profile, and the end of the transverse profile unit on the second side of each first passage is spot welded to the longitudinal reinforcing profile. Each set of longitudinal reinforcing profiles includes multiple longitudinal profile units, and a second passage is reserved between two adjacent longitudinal profile units for welding with the crossbeam. Step 5: Set the crossbeams transversely along the stiffener plate on the second opening of the longitudinal reinforcing profile, and the length of the crossbeams is the same as the transverse length of the stiffener plate. There are multiple crossbeams and they are arranged at intervals along the longitudinal direction of the stiffener plate. The end of the longitudinal profile unit on the first side of each second opening is fully welded to the crossbeam, and the end of the longitudinal profile unit on the second side of each second opening is spot welded to the crossbeam. Step 6: Weld the top surfaces of the reinforcing ribs on the two adjacent reinforcing unit plates at both ends of the ribs. When welding all the ribs, an even number of welders should weld symmetrically from the middle of the reinforcing plate to the perimeter of the reinforcing plate. After the ribs on all the reinforcing ribs are welded, a marine aluminum alloy reinforcing plate with a reinforced structure is formed by slow welding. Step 7: During the construction of ship sections or the entire ship, after the reinforced marine aluminum alloy stiffener plate with a delayed welding structure in Step 5 is fixed by constraint welding on the section or the entire section, the end of the transverse profile unit on the second side of each first passage in Step 4 is fully welded to the longitudinal reinforcing profile, and the end of the longitudinal profile unit on the second side of each second passage in Step 5 is fully welded to the crossbeam.

2. The welding method for marine aluminum alloy stiffened plates with reinforced structures as described in claim 1, characterized in that, The transverse reinforcing profile is I-shaped, while the longitudinal reinforcing profile and the crossbeam are both T-shaped. Both the longitudinal reinforcing profile and the crossbeam include an upper panel and a web plate located at the bottom of the panel. The ends of the transverse profile units are welded to the web plates of the longitudinal reinforcing profiles, and the ends of the longitudinal profile units are welded to the web plates of the crossbeams.

3. The welding method for marine aluminum alloy stiffened plates with reinforced structures as described in claim 2, characterized in that, In step 3, a first reinforcing rib is welded between the front and rear sides of the transverse reinforcing profile and the top surface of the reinforcing rib, respectively. The first reinforcing rib is parallel to the reinforcing rib.

4. The welding method for marine aluminum alloy stiffened plates with reinforced structures as described in claim 2, characterized in that, In step 4, second reinforcing ribs are welded between the left and right sides of the longitudinal reinforcing profile and the top surface of the transverse reinforcing profile, respectively. The second reinforcing ribs are parallel to the transverse reinforcing profile.

5. The welding method for marine aluminum alloy stiffened plates with reinforced structures as described in claim 2, characterized in that, In step 5, a third reinforcing rib is welded between the web of the longitudinal profile unit and the web of the crossbeam, and the third reinforcing rib is parallel to the plate of the stiffened unit plate.

6. The welding method for marine aluminum alloy stiffened plates with reinforced structures as described in claim 5, characterized in that, In step 5, the third reinforcing rib on the first side near the second opening is fully welded to the web of the longitudinal profile unit and the web of the crossbeam, and the third reinforcing rib on the second side near the second opening is spot welded to the web of the longitudinal profile unit and the web of the crossbeam; in step 7, the third reinforcing rib on the second side near the second opening is fully welded to the web of the longitudinal profile unit and the web of the crossbeam.

7. The welding method for marine aluminum alloy stiffened plates with reinforced structures as described in claim 1, characterized in that, In step 6, each reinforcing rib is welded from the middle to both ends symmetrically onto the two reinforcing ribs.

8. The welding method for marine aluminum alloy stiffened plates with reinforced structures as described in claim 1, characterized in that, The projections of the axis of the transverse reinforcing profile and the axis of the crossbeam do not coincide.

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