Ship acute angle welding structure and welding method thereof

Abstract

The invention provides a ship acute angle welding structure and a welding method thereof. The ship acute angle welding structure comprises a first splicing plate, a second splicing plate, a first acute angle plate, a second acute angle plate and a middle transition plate. The edge of the second splice plate is aligned with the edge of the first splice plate; one side of the splicing part of the first splicing plate and the second splicing plate is inserted into the acute-angle end of the first acute-angle plate; the other side of the splicing part of the first splicing plate and the second splicing plate is inserted into the acute angle end of the second acute angle plate; the middle transition plate is arranged in a center hole in the middle position defined by the first splicing plate, the second splicing plate, the first acute angle plate and the second acute angle plate. The acute angle smaller than a certain angle is converted into a welding joint with a large angle, stress concentration is reduced, and the technical problem that in the prior art, follow-up work such as flaw detection is needed for welding at the intersection of the acute angle, and consequently the cost of a welding structure and method in the prior art is high is solved.

Description

Technical field:

[0001] The invention relates to the field of welding, in particular to a ship sharp-angle welding structure and a welding method thereof. Background technology:

[0002] The hull structure cannot avoid the situation where the angle between the plate seams and the angle between the plate seams and the structure is less than 90 degrees. There are three types of plate seams: large seams, angled seams, and ordinary plate seams. The structure is divided into two situations, the main structure and the secondary structure. The main structure includes plates (including bulkhead plates, platform plates, outer plates, inner shell plates, etc.), and strong beams that provide rigid support. The secondary structure includes flat irons, elbow plates, and frame materials on the plates. The angle between the plate seams and the structure, the larger the angle between the plate seams, the smaller the length of the weld overlap. However, since there are situations where large seams and angled seams have a very large impact on the adjustment, and the structural layout is fixed. Generally, it is difficult to adjust once it is set. This situation occurs more frequently in ships with complex lines, bows and sterns. In order to ensure the strength of this structure, it is necessary to reduce flaw detection and other work, and a new structure needs to be designed.

[0003] Therefore, there is an urgent need for a ship sharp-angle welding structure, which helps to solve the technical problem that welding at the intersection of sharp angles requires subsequent work such as flaw detection in the prior art, resulting in high costs for the welding structure and method of the prior art. Summary of the invention:

[0004] In one embodiment, the present invention provides a ship sharp-angle welding structure, which converts a sharp angle less than a certain angle into a welding seam with a larger angle through structural changes, thereby reducing stress concentration. This helps to solve the technical problem that welding at the intersection of sharp angles in the prior art requires subsequent work such as flaw detection, resulting in high costs for welding structures and methods in the prior art.

[0005] The ship acute angle welding structure comprises a first splicing plate, a second splicing plate, a first acute angle plate, a second acute angle plate, and an intermediate transition plate;

[0006] The second splicing plate is aligned with an edge of the first splicing plate;

[0007] One side of the joint portion of the first splicing plate and the second splicing plate is inserted into the acute angle end of the first acute angle plate;

[0008] The other side of the joint portion of the first splicing plate and the second splicing plate is inserted into the acute angle end of the second acute angle plate;

[0009] The intermediate transition plate is arranged at a center hole in the middle of the first splicing plate and the second splicing plate, and the first acute-angle plate and the second acute-angle plate.

[0010] In one embodiment, the first acute angle and the second acute angle are less than 15 degrees.

[0011] In one embodiment, the first splicing plate and the second splicing plate are 30 mm or 15 mm.

[0012] In one embodiment, the central hole is a circular hole or a square hole, the diameter of the circular hole is greater than 300 mm, and the side length of the square hole is greater than 300 mm.

[0013] In one embodiment, the present invention further provides a welding method for a ship sharp angle welding structure. Based on the ship sharp angle welding structure, the welding method for the ship sharp angle welding structure includes:

[0014] Welding is performed along the joints between the intermediate transition plate and the first splicing plate, the second splicing plate, the first acute-angle plate, and the second acute-angle plate.

[0015] In one embodiment, the sharp angle structure of the ship is used in large seams and creased seams.

[0016] In one embodiment, the acute angle structures are located at the bow and stern of the ship.

[0017] In one embodiment, a carbon dioxide welding groove is formed at the rupture. Description of the drawings:

[0018] Figure 1 This is a schematic diagram of a top view of a simulated weld overlap of a 30 mm plate with a 45 degree groove in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the front view structure of a 30mm plate with a 45-degree groove simulated weld overlap in another embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of a top view of a simulated weld overlap of a 15 mm plate with a 45-degree groove in another embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the front view structure of a 15 mm plate with a 45-degree groove simulated weld overlap in another embodiment of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of another embodiment of the present invention before the sharp-angle weld overlaps the central hole;

[0023] Figure 6 It is a schematic diagram of the structure after the sharp-angle weld overlaps the central hole in another embodiment of the present invention.

[0024] Reference numerals:

[0025] First splicing plate 1

[0026] Second splicing plate 2

[0027] First acute angle plate 3

[0028] Second acute angle plate 4

[0029] Intermediate transition plate 5

[0030] Center hole 6 Specific embodiment:

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0033] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0034] It should also be understood that, although the present application has been described with reference to some specific examples, those skilled in the art will be able to realize many other equivalent forms of the present application that have the features described in the claims and are therefore within the scope of protection defined thereby.

[0035] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

[0036] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to determine the true intent based on the user's historical operations and to avoid unnecessary or redundant details that make the present application unclear. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but are merely used as the basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.

[0037] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.

[0038] Figure 1 This is a schematic diagram of a top view of a simulated weld overlap of a 30 mm plate with a 45 degree groove in one embodiment of the present invention; Figure 2This is a schematic diagram of the front view structure of a 30mm plate with a 45-degree groove simulated weld overlap in another embodiment of the present invention; Figure 3 This is a schematic diagram of a top view of a simulated weld overlap of a 15 mm plate with a 45-degree groove in another embodiment of the present invention; Figure 4 This is a schematic diagram of the front view structure of a 15 mm plate with a 45-degree groove simulated weld overlap in another embodiment of the present invention; Figure 5 It is a schematic diagram of the structure of another embodiment of the present invention before the sharp-angle weld overlaps the central hole; Figure 6 It is a schematic diagram of the structure after the sharp-angle weld overlaps the central hole in another embodiment of the present invention.

[0039] like Figure 1 to Figure 2 As shown, in one embodiment, the present invention provides a ship sharp angle welding structure, the ship sharp angle welding structure comprises a first splicing plate 1, a second splicing plate 2, a first sharp angle plate 3, a second sharp angle plate 4 and an intermediate transition plate 5;

[0040] The second splicing plate 2 is aligned with the edge of the first splicing plate 1;

[0041] One side of the joint portion of the first splicing plate 1 and the second splicing plate 2 is inserted into the acute angle end of the first acute angle plate 3;

[0042] The other side of the joint portion of the first splicing plate 1 and the second splicing plate 2 is inserted into the acute angle end of the second acute angle plate 4;

[0043] The middle transition plate 5 is arranged at the center hole 6 at the middle position enclosed by the first splicing plate 1 and the second splicing plate 2 , and the first acute angle plate 3 and the second acute angle plate 4 .

[0044] In this embodiment, a specific embodiment of a sharp-angle welding structure for a ship is provided. Some product ships use it, while others do not. By fully using this design, according to the situation where there are five places on a ship where sharp-angle welds overlap and need to be inspected, five construction instructions can be reduced, or five additional inspection procedures can be reduced, which helps to solve the technical problem that subsequent work such as inspection is required for welding at the intersection of sharp angles in the prior art, resulting in a high cost of the welding structure and method in the prior art.

[0045] In one embodiment, the first acute angle 3 and the second acute angle 4 are less than 15 degrees.

[0046] In this embodiment, an acute angle range is provided.

[0047] In one embodiment, the first splicing plate 1 and the second splicing plate 2 are 30 mm or 15 mm.

[0048] In this embodiment, a specific implementation method of the thickness of the first splicing plate 1 and the second splicing plate 2 is provided. Reasons for welding defects: When the plate seam angle is the smallest acute angle of 15 degrees, simulate the weld overlap length. For 30mm and 15mm thick plates, a carbon dioxide groove is opened to simulate the plate seam angle of 15 degrees. The 30mm thick plate will produce a weld overlap length of about 182mm. The 15mm thick plate will produce a weld overlap length of about 91mm.

[0049] In one embodiment, the central hole 6 is a circular hole or a square hole, the diameter of the circular hole is greater than 300 mm, and the side length of the square hole is greater than 300 mm.

[0050] In this embodiment, a specific structural implementation and specific dimensions of a center hole 6 are provided.

[0051] In one embodiment, the present invention further provides a welding method for a ship sharp angle welding structure. Based on the ship sharp angle welding structure, the welding method for the ship sharp angle welding structure includes:

[0052] Welding is performed along the joints between the middle transition plate 5 and the first splicing plate 1 , the second splicing plate 2 , the first acute angle plate 3 , and the second acute angle plate 4 .

[0053] In this embodiment, a specific implementation method of a welding method for a sharp-angle welding structure of a ship is provided. A circular or square hole is set in the overlapping area of ​​the weld, the diameter of the circular hole is ≥300mm, and the length of any side of the length and width of the square hole is ≥300mm, and the sharp-angle weld is disconnected. The cross weld is changed to form an acute angle, the direction of the weld is changed, a patch plate is set in the set hole for welding, and a plate that meets the specification requirements and has a length and width greater than 300x300 is inserted, and the acute angle formed by the weld is changed to be greater than 15 degrees.

[0054] In one embodiment, the sharp angle structure of the ship is used in large seams and creased seams.

[0055] In this embodiment, a specific implementation of the application position of the acute-angle structure of the ship is provided.

[0056] In one embodiment, the acute angle structures are located at the bow and stern of the ship.

[0057] In this embodiment, a specific implementation method of setting the acute angle structure of the ship at a specific position on the ship is provided.

[0058] In one embodiment, a carbon dioxide welding groove is formed at the rupture.

[0059] In this embodiment, a specific implementation method of performing simulated groove welding at the breach is provided.

[0060] Beneficial effects:

[0061] 1. Reduce the additional weld flaw detection process due to weld overlap.

[0062] 2. Eliminate welding defects caused by weld overlap.

[0063] 3. The weld is beautiful.

[0064] 4. Reduce the time for segmented inspection.

[0065] 5. Shorten the ship construction period.

[0066] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A ship sharp angle welding structure, characterized in that: The ship sharp angle welding structure comprises: A first splicing plate (1); a second splicing plate (2) aligned with the edge of the first splicing plate (1); A first acute-angle plate (3), wherein one side of the joint portion of the first splicing plate (1) and the second splicing plate (2) is inserted into an acute-angle end of the first acute-angle plate (3); a second acute-angle plate (4), wherein the other side of the joint portion of the first splicing plate (1) and the second splicing plate (2) is inserted into the acute-angle end of the second acute-angle plate (4); An intermediate transition plate (5) is arranged at a center hole (6) in the middle position enclosed by the first splicing plate (1) and the second splicing plate (2), and the first acute-angle plate (3) and the second acute-angle plate (4).

2. The ship acute angle welding structure according to claim 1 is characterized in that: The first acute angle (3) and the second acute angle plate (4) are less than 15 degrees.

3. The ship acute angle welding structure according to claim 2 is characterized in that: The first splicing plate (1) and the second splicing plate (2) are 30 mm or 15 mm.

4. The ship acute angle welding structure according to claim 3 is characterized in that: The central hole (6) is a circular hole or a square hole, the diameter of the circular hole is greater than 300 mm, and the side length of the square hole is greater than 300 mm.

5. A welding method for a ship sharp angle welding structure, characterized in that: Based on the ship sharp angle welding structure according to any one of claims 1 to 4, the welding method of the ship sharp angle welding structure comprises: Welding is performed along the joints between the intermediate transition plate (5) and the first splicing plate (1), the second splicing plate (2), the first acute-angle plate (3), and the second acute-angle plate (4).

6. The welding method of the ship acute angle welding structure according to claim 5, characterized in that: The sharp-angle structure of the ship is used for large seams and folded-angle seams.

7. The welding method of the ship acute angle welding structure according to claim 6, characterized in that: The acute angle structures of the ship are located at the bow and stern of the ship.

8. The welding method for ship acute angle welding structure according to claim 7, characterized in that: A carbon dioxide welding groove is formed at the breach.

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