Method for flattening local concave-convex deformation of ship thin plate

Abstract

The present application relates to the technical field of cruise ship manufacturing, and in particular to a method for leveling the concavo-convex deformation of a local area of a ship thin plate, which is applied to a ship support plate. A plurality of support members are arranged below the ship support plate, and the plurality of support members are arranged at intervals along the width direction of the ship support plate. A deformation area is formed on the ship support plate between at least two adjacent support members in a group. The leveling method includes: heating and leveling the ship support plate from both sides of the deformation area towards the middle according to a preset multi-segment leveling construction line, wherein the multi-segment leveling construction line is sequentially arranged along the length direction and the width direction of the ship support plate. It can be seen that by using this method, the local deformation area can be effectively leveled, thereby reducing the later auxiliary material input, reducing the dead weight of the hull, helping to improve the bearing capacity of the hull, and the above operations are simple, convenient and efficient.

Description

Technical Field

[0001] This application relates to the technical field of cruise ship manufacturing, and particularly to a method for leveling the concave and convex deformation of a local area of a ship's thin plate. Background Art

[0002] Currently, during the construction of large cruise ships, local concave and convex deformations may occur. This deformation not only affects the installation of equipment but also leads to an increase in auxiliary materials laid on the ship's thin plate, resulting in increased costs, as well as an increase in the self-weight of the ship's hull and a reduction in its load-bearing capacity. Summary of the Invention

[0003] The purpose of this application is to provide a method for leveling the concave and convex deformation of a local area of a ship's thin plate, which to a certain extent solves the technical problems existing in the prior art that during the construction of large cruise ships, local concave and convex deformations may occur. This deformation not only affects the installation of equipment but also leads to an increase in auxiliary materials laid on the ship's thin plate, resulting in increased costs, as well as an increase in the self-weight of the ship's hull and a reduction in its load-bearing capacity.

[0004] This application provides a method for leveling the concave and convex deformation of a local area of a ship's thin plate, which is applied to a ship support plate. A plurality of support members are arranged below the ship support plate, and the plurality of support members are spaced at intervals along the width direction of the ship support plate. A deformation area is formed on the ship support plate between at least one group of adjacent two support members. The deformation area is a convex structure or a concave structure. The method for leveling the concave and convex deformation of the local area of the ship's thin plate includes the following steps:

[0005] Heating and leveling the ship support plate according to a preset multi-segment leveling construction line and from both sides of the deformation area towards the middle, wherein the multi-segment leveling construction lines are sequentially arranged along the length direction and the width direction of the ship support plate.

[0006] In the above technical solution, further, the leveling construction line is an inclined leveling construction line, and a plurality of the inclined leveling construction lines are arranged in an array along the length direction and the width direction of the deformation area, and construction is carried out from both sides of the deformation area towards the middle according to the leveling construction line.

[0007] In any of the above technical solutions, further, the leveling construction line is a T-shaped leveling construction line, and a plurality of the T-shaped leveling construction lines are sequentially arranged along the length direction and the width direction of the deformation area, and construction is carried out from both sides of the deformation area towards the middle according to the leveling construction line.

[0008] In any of the above technical solutions, further, any one of the T-shaped leveling construction lines is composed of inclined lines at an angle of 45° with the width direction of the deformation area.

[0009] In any of the above technical solutions, further, the leveling construction line is an X-shaped leveling construction line, and a plurality of the X-shaped leveling construction lines are arranged in two columns extending along the length direction of the support member, wherein one column of the X-shaped leveling construction lines is arranged on one side of the deformation region;

[0010] The other column of the X-shaped leveling construction lines is arranged on the opposite side of the deformation region.

[0011] In any of the above technical solutions, further, the leveling construction line is an X-shaped leveling construction line, and a plurality of the X-shaped leveling construction lines are arranged in multiple columns extending along the length direction of the support member. The multiple columns of the X-shaped leveling construction lines are sequentially and spaced apart along the width direction of the deformation region, and construction is carried out from both sides of the deformation region towards the middle according to the leveling construction line.

[0012] In any of the above technical solutions, further, before heating and leveling the ship support plate according to the preset multi-segment leveling construction line and from both sides of the deformation region towards the middle, the following steps are further included:

[0013] Step 101: Heat and straighten the ship support plate directly above any one of the two adjacent support members where a deformation region is formed between them.

[0014] In any of the above technical solutions, further, the leveling construction line involved in Step 101 is a plurality of first straight leveling construction lines spaced apart along the length direction of the support member.

[0015] In any of the above technical solutions, further, a first inclined leveling construction line is arranged between any two adjacent first straight leveling construction lines.

[0016] In any of the above technical solutions, further, the following steps are further included after Step 101:

[0017] Step 102: Offset the support member towards the deformation region of the ship support plate by a preset distance, and then heat and straighten the ship support plate.

[0018] In any of the above technical solutions, further, the leveling construction line involved in Step 102 is a plurality of second straight leveling construction lines spaced apart along the length direction of the support member.

[0019] In any of the above technical solutions, further, a second inclined leveling construction line is arranged between any two adjacent second straight leveling construction lines.

[0020] In any of the above technical solutions, further, the heating and flattening method is electromagnetic induction heating and flattening, and it is deep penetration heating or surface heating; and / or

[0021] In steps 100 and 200, the following steps are further included: detecting in real time the deformation amount of the deformed area of the ship support plate, and then formulating the number and arrangement of the flattening construction lines; and / or

[0022] After step 200, step 300 is further included: the heated ship support plate is naturally cooled or water cooled.

[0023] Compared with the prior art, the beneficial effects of this application are as follows:

[0024] By using the method for flattening the concave and convex deformation of the local area of the ship thin plate provided by this application, the local deformed area can be effectively flattened, thereby reducing the later auxiliary material input, reducing the self-weight of the hull, helping to improve the bearing capacity of the hull, and the above operations are simple, convenient and have high efficiency. Description of the Drawings

[0025] In order to more clearly illustrate the specific embodiments of this application or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 It is the process diagram of the method for flattening the concave and convex deformation of the local area of the ship thin plate provided by Embodiment 1 of this application;

[0027] Figure 2 It is the process diagram of the method for flattening the concave and convex deformation of the local area of the ship thin plate provided by Embodiment 2 of this application;

[0028] Figure 3 It is the process diagram of the method for flattening the concave and convex deformation of the local area of the ship thin plate provided by Embodiment 3 of this application;

[0029] Figure 4 It is another process diagram of the method for flattening the concave and convex deformation of the local area of the ship thin plate provided by Embodiment 3 of this application.

[0030] Reference Signs:

[0031] 1 - Ship support plate, 2 - Support member, 21 - First support member, 22 - Second support member. Detailed Embodiments

[0032] The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present application.

[0033] Generally, the components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application.

[0034] All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0036] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0037] Next, refer to Figures 1 to 4 Describe the method for flattening the concave-convex deformation of a local area of a ship thin plate according to some embodiments of the present application.

[0038] Embodiment 1

[0039] See Figure 1As shown in the figure, an embodiment of the present application provides a method for leveling the concave and convex deformation of a local area of a ship thin plate, which is applied to the ship support plate 1. The ship support plate 1 is formed of a steel plate. A plurality of support members 2 are arranged below the ship support plate 1, and the plurality of support members 2 are arranged at intervals along the width direction of the ship support plate 1. The support member 2 is the so-called hard stop in the prior art, and it is connected to the ship support plate 1 by welding. A deformation area is formed on the ship support plate 1 between at least one group of two adjacent support members 2. The deformation area is a convex structure or a concave structure. For the convenience of understanding, a section of the ship support plate 1 is intercepted, and two support members 2, that is, hard stops, are welded below it. For the convenience of distinction, they are named the first support member 21 and the second support member 22 from left to right. A large convex structure is formed on the ship support plate 1 between the first support member 21 and the second support member 22. The maximum deformation of this convex structure is between 20 mm and 40 mm. Note that this is only an example. The deformation area is not limited to convexity, and the maximum deformation is not limited to the above. In addition, it should be noted that both the first straight leveling construction line and the second straight leveling construction line are straight leveling construction lines, only with different names. For this, they will be collectively referred to as straight leveling construction lines in the following text and will not be distinguished. Similarly, for the first inclined leveling construction line and the second inclined leveling construction line, they will also be collectively referred to as inclined leveling construction lines in the following text and will not be distinguished.

[0040] The method for leveling the concave and convex deformation of the local area of the ship thin plate provided in this embodiment includes the following steps:

[0041] Step 101: First, heat and correct the ship support plate 1 directly above the two support members 2, such as the first support member 21 and the second support member 22. Specifically, first construct according to the straight leveling construction line, that is, the first straight leveling construction line. After all the straight leveling construction lines are constructed, construct according to the inclined leveling construction line, that is, the first inclined leveling construction line, between two adjacent straight leveling construction lines. Note: The inclined leveling construction line forms an acute angle with the straight leveling construction line;

[0042] Step 102: Offset the support member 2 a preset distance toward the deformation area of the ship support plate 1, and then heat and correct the ship support plate 1. Specifically, first construct according to the straight leveling construction line, that is, the second straight leveling construction line. After all the straight leveling construction lines are constructed, construct according to the inclined leveling construction line, that is, the second inclined leveling construction line, between two adjacent straight leveling construction lines. Further, preferably, the distance a1 between two columns of straight leveling construction lines is 15 mm - 20 mm; the distance b1 between any two adjacent straight leveling construction lines is 160 mm - 170 mm.

[0043] Step 103: Then, heat and correct the deformation area of the ship support plate 1 between two adjacent support members 2. The specific construction sequence is:

[0044] First, construct according to a series of inclined leveling construction lines numbered 7 on the left side of the deformation area (the inclined leveling construction lines here are also the third inclined leveling construction lines), and then construct according to a series of inclined leveling construction lines numbered 7 on the right side of the deformation area. After that, construct according to a series of inclined leveling construction lines numbered 8 on the left side, and then construct according to a series of inclined leveling construction lines numbered 8 on the right side. In this order, construct from the side of the deformation area towards the center, that is, construct in sequence according to numbers 7, 8, 9, 10 until number 11.

[0045] Of course, it is not limited to this. Other construction sequences can also be selected according to actual needs. For example, construct along a row of inclined leveling construction lines in the width direction of the deformation area. For example, for the first row of inclined leveling construction lines, first construct according to the inclined leveling construction line numbered 7 on the left side, and then construct according to the inclined leveling construction line numbered 7 on the right side. After that, construct according to the inclined leveling construction line numbered 8 on the left side, and then construct according to the inclined leveling construction line numbered 8 on the right side. In this order, construct from the side of the deformation area towards the center. After the construction of the first row of inclined leveling construction lines is completed, then construct according to the second row of inclined leveling construction lines, and so on.

[0046] Step 103: The heated ship support plate 1 is naturally cooled or water-cooled.

[0047] According to the structure described above, first heat the ship support plate 1 above the two support members 2 on both sides of the deformation area, and then construct from the left and right sides of the deformation area towards the middle, gradually reducing the deformation amount of the deformation area, and finally completely leveling the deformation area. Moreover, the construction method using inclined leveling construction lines arranged in an array is simple and convenient to operate, and has a relatively high working efficiency. Since the ship support plate 1 is leveled, the input of auxiliary materials in the later stage is reduced, and the weight of the hull itself is reduced, which helps to improve the bearing capacity of the hull.

[0048] In addition, the inclined leveling construction lines can not only compensate for the deformation in the width direction, but also appropriately compensate for the deformation in the length direction, improving the overall leveling effect.

[0049] Note: If the ship support plate 1 above the support members 2 on both sides of the deformation area has been heated and leveled before this leveling process, then this position can no longer be leveled, but directly level the deformation area. Or, although the ship support plate 1 above the support members 2 on both sides of the deformation area has been heated and leveled, but there is still space in each column of leveling lines, then construction can still be supplemented in this space, and then construct the deformation area.

[0050] Furthermore, preferably, the heating and leveling method is electromagnetic induction heating and leveling, which has a fast heating speed, is more confined to a limited local area during heating, and has more precise temperature control. At the same time, it avoids the problem in the prior art that after thermal straightening heating, a large amount of water cooling is required, resulting in a large amount of water covering the entire deck and posing a safety hazard to the installation of electrical equipment.

[0051] Furthermore, preferably, the deep penetration heating in electromagnetic heating is adopted in this embodiment. Deep penetration heating means that if long-term heating is used, on the upper surface of the steel plate, the temperature stabilizes at the Curie temperature (about 700 °C), and at the same time, the heat conducts to the bottom surface, so that the temperature difference between the upper and bottom surfaces of the steel plate decreases rapidly. This will cause strong deformation on both sides of the steel plate, and as a result, the steel plate appears to become thicker. Deep penetration heating can be applied above or near the beam (or stiffener), and can also be used for positive convex and concave parts. Straightening is completed by shrinking the steel plate, rather than pressing down the protruding part forcefully, so there is no risk of the protruding part reappearing elsewhere. Straightening a very small area often causes the surrounding area to become tight. Therefore, a preferable method is to straighten as large an area as possible to fully share this effect.

[0052] Specifically, in this embodiment, deep heating is selected for steps 101 and 102, and surface heating is selected for step 103. Figure 1 The dotted line in the figure represents surface heating, and the solid line represents deep heating.

[0053] Furthermore, preferably, the cooling method of the steel plate after heating should meet the requirements of Table 1.

[0054] Table 1 Cooling Method of Steel Plate after Heating

[0055]

[0056] Combined with the above, it can be seen that after overall leveling, the flatness needs to be measured after the steel plate is completely cooled. Generally, when the ambient temperature is 10 °C or below, the steel plate is air-cooled for more than 5 hours; when the ambient temperature is 11 °C to 25 °C, the steel plate is air-cooled for more than 7 hours; when it is above 25 °C, the steel plate is air-cooled for more than 8 hours.

[0057] Embodiment 2

[0058] See Figure 2 As shown, the technical solutions of Embodiment 2 and Embodiment 1 are generally the same, but there are also several differences, which will be elaborated below:

[0059] The first difference is that the maximum deformation amount of the deformed area, that is, the convex structure, is greater than 40 mm. Note that this is only an example, and the deformed area is not limited to convexity, and the maximum deformation amount is not limited to the above.

[0060] The second difference is that the specific construction sequence in this embodiment is:

[0061] First, a series of T-shaped leveling lines numbered 7 on the left side of the deformation area are constructed, and then a series of T-shaped leveling lines numbered 7 on the right side of the deformation area are constructed, and then a series of T-shaped leveling lines numbered 8 on the left side are constructed, and then a series of T-shaped leveling lines numbered 8 on the right side are constructed. In this order, the construction is carried out from the side to the center of the deformation area, that is, the construction is carried out in the order of number 7, number 8, number 9 to number 10. Of course, it is not limited to this, and other construction orders can be selected according to actual needs. For example, along Construction is carried out along multiple rows of inclined leveling construction lines in the width direction of the deformation area. For example, for the first row of T-shaped leveling lines, construction is first carried out according to the T-shaped leveling line numbered 7 on the left, and then construction is carried out according to the T-shaped leveling line numbered 7 on the right, and then construction is carried out according to the T-shaped leveling line numbered 8 on the left, and then construction is carried out according to the T-shaped leveling line numbered 8 on the right, in this order, construction is carried out from the side to the center of the deformation area. After construction is completed according to the inclined leveling construction lines of the first row, construction is carried out according to the inclined leveling construction lines of the second row, and so on.

[0062] Note: Any T-shaped leveling construction line is composed of inclined lines at an angle of 45° to the width direction of the deformation area.

[0063] According to the structure described above, the density of the leveling construction lines is greater in the deformation area, that is, the leveling construction lines are denser and woven into a net covering the deformation area. After the ship support plate 1 is heated and cooled, the shrinkage is greater, so it is suitable for leveling areas with particularly large deformation amounts, and the leveling effect is better. Moreover, by constructing from both sides of the deformation area to the middle, the deformation area can be gradually flattened to avoid causing new convex structures.

[0064] In addition, any T-shaped leveling construction line is composed of inclined lines at a 45° angle to the width direction of the deformation area, which can better level irregular deformations in concave and convex directions in local areas, with better effects and a relative efficiency improvement of 30%.

[0065] Embodiment 3

[0066] See also Figure 3 As shown, the technical solution of the third embodiment is substantially the same as that of the first embodiment, but there are also several differences, which will be described below:

[0067] The first difference is that the back of the deformation area of the ship support plate 1 is wrapped with insulating sound insulation material, and the maximum deformation of the deformation area of the ship support plate 1, that is, the maximum height of the positive protrusion, is 21 mm or less. Note: The deformation area and the maximum deformation are only examples and are not limited to this.

[0068] The second difference is that it has step 101 in Embodiment 1 but does not have step 102. That is to say, after heating and straightening directly above the support member 2, there is no need to offset and correct the deformed area, but directly heat the surface of the convex part.

[0069] The third difference is that it is different from step 103 in Embodiment 1. In this embodiment, specifically, two columns of leveling construction lines are arranged on the opposite side parts of the deformed area. The specific construction sequence according to this leveling construction line is:

[0070] First, construct a series of inclined leveling construction lines numbered 3 on the left side of the deformed area, then construct a series of inclined leveling construction lines numbered 3 on the right side, then construct a series of straight leveling construction lines numbered 4 on the left side, then construct a series of straight leveling construction lines numbered 4 on the right side, then construct a series of straight leveling construction lines numbered 5 on the left side, and then construct a series of straight leveling construction lines numbered 5 on the right side, that is, construct in the order of number 3, number 4 until number 5.

[0071] Of course, it is not limited to this. First, construct a series of inclined leveling construction lines numbered 3 on the left side of the deformed area, and then construct a series of inclined leveling construction lines numbered 4 on the left side (note that a series of inclined leveling construction lines numbered 3 and the corresponding series of inclined leveling construction lines numbered 4 just form multiple X-shaped leveling lines), and then construct a series of straight leveling construction lines numbered 5 on the left side, that is, construct in the order of number 3, number 4 until number 5, and construct on the right side in the same order, or adopt other construction sequences.

[0072] The fourth difference is that the electromagnetic heating method is different. This embodiment adopts deep penetration heating + surface heating. The deep penetration heating has been described above. Now, the surface heating is described: Specifically, surface heating means heating the surface of the steel plate until it reaches the straightening required temperature. When there is a large difference in temperature between the upper and lower surfaces of the steel plate, the bottom surface of the steel plate maintains its own internal stress, while on its upper surface, induction heating will cause greater deformation, resulting in the steel plate being bow-shaped. Therefore, this heating method can only be applied to the convex surface of the steel plate.

[0073] The ship support plate 1 above the support member 2 adopts deep penetration heating, the deformed area adopts surface heating, and deep penetration heating is still adopted between the two. For the convenience of distinction, Figure 1 Solid lines represent deep penetration heating, and dashed lines represent surface heating.

[0074] According to the structure described above, it can be seen that the amount of deformation in this embodiment is smaller than that in the first and second embodiments. Therefore, only two columns of leveling construction lines need to be arranged on both sides of the deformation area, which can not only meet the leveling requirements, but also be convenient for construction and have high efficiency.

[0075] In addition, the method provided in this embodiment can be applied to the case where the reverse side is already wrapped with an insulating and soundproof material. This insulating and soundproof material can withstand a high temperature of 530 °C, and the surface heating used can control the temperature on the reverse side below 500 degrees, which can avoid material damage after heating. Moreover, since the leveling construction lines are not arranged throughout the deformation area, it also plays a role in protecting the insulating and soundproof material.

[0076] The fifth difference is that: the distance b3 between any two adjacent straight leveling construction lines among the multiple straight leveling construction lines above different support members 2 is 160 mm - 170 mm, and some distances c3 are 70 mm - 100 mm. Of course, it is not limited to this and can be selected according to actual needs.

[0077] Embodiment Four

[0078] See Figure 4 As shown, the technical solution of Embodiment Four is generally the same as that of Embodiment One, but there are also several differences, which will be elaborated below:

[0079] The first difference is that: the reverse side of the deformation area of the ship support plate 1 is wrapped with an insulating and soundproof material, and the maximum deformation amount of the deformation area of the ship support plate 1, that is, the maximum height of the positive protrusion, is greater than 21 mm. Note: The deformation area and the maximum deformation amount are only examples and are not limited to this;

[0080] The first difference is that: it is different from steps 101 and 102 in Embodiment One, that is, there is no inclined leveling construction line between two adjacent straight leveling construction lines, and the operation of heating according to the inclined leveling construction line is omitted.

[0081] The second difference is that: it is different from step 103 in Embodiment One. The specific construction sequence in this embodiment is:

[0082] First, construct according to a series of inclined leveling construction lines numbered 2 on the left side of the deformation area, then construct according to a series of inclined leveling construction lines numbered 3 on the right side of the deformation area, and then construct according to a series of inclined leveling construction lines numbered 4 on the left side (note that a series of inclined leveling construction lines numbered 2 and the corresponding series of inclined leveling construction lines numbered 4 exactly form multiple X-shaped leveling lines). Then construct according to a series of inclined leveling construction lines numbered 5 on the right side. In this order, construct from the side of the deformation area towards the center, that is, construct in the order of number 2, number 3, number 4, number 5, number 6, number 7, number 8, number 9 until number 10. Of course, it is not limited to this, and other construction sequences can also be selected according to actual needs. For example, construct along a row of leveling lines in the width direction of the deformation area. For the first row of leveling lines, first construct according to the inclined leveling construction line numbered 2 on the left side, then construct according to the inclined leveling construction line numbered 3 on the right side, then construct according to the inclined leveling construction line numbered 4 on the left side, and then construct according to the inclined leveling construction line numbered 5 on the right side. In this order, construct from the side of the deformation area towards the center. After the construction of the inclined leveling construction lines of the first row is completed, then construct the inclined leveling construction lines of the second row, and so on.

[0083] The third difference: The ship support plate 1 above the support member 2 uses deep heating, and the deformation area uses surface heating. For the convenience of distinction, Figure 1 The solid line in it represents deep heating, and the dashed line represents surface heating.

[0084] According to the structure described above, it can be known that the deformation amount of this embodiment is smaller than that of the first and second embodiments, but larger than that of the third embodiment. Therefore, it is necessary to reasonably arrange X-shaped leveling construction lines in the entire deformation area to meet the leveling requirements.

[0085] In addition, the method provided in this embodiment can be used for the reverse side that has been wrapped with insulating and soundproof materials. This insulating and soundproof material can withstand a high temperature of 530 °C. The surface heating adopted can control the temperature on the reverse side below 500 degrees, which can avoid material damage after heating. Moreover, the construction is carried out gradually from the side of the deformation area towards the center, avoiding concentrated heating in a certain area, and can also play a role in protecting the insulating and soundproof materials.

[0086] The fourth difference lies in: Further, preferably, the distance b4 between any two adjacent straight leveling construction lines among multiple straight leveling construction lines above different support members 2 is 160 mm - 170 mm, and some distances c4 are 70 mm - 100 mm. Of course, it is not limited to this, and can be selected according to actual needs.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for flattening the concave and convex deformation of a local area of a ship thin plate, which is applied to a ship support plate. A plurality of support members are arranged below the ship support plate, and the plurality of support members are arranged at intervals along the width direction of the ship support plate. A deformation area is formed on the ship support plate between at least one group of two adjacent support members, and the deformation area is a convex structure or a concave structure. The characteristics are as follows: The method for flattening the concave and convex deformation of the local area of the ship thin plate includes the following steps: According to the preset multi-segment flattening construction lines, and heating and flattening the ship support plate from both sides of the deformation area towards the middle, wherein the multi-segment flattening construction lines are sequentially arranged along the length direction and the width direction of the ship support plate; Before heating and flattening the ship support plate from both sides of the deformation area towards the middle according to the preset multi-segment flattening construction lines, the following steps are also included: Step 101: Heat and correct the ship support plate directly above any one of the two adjacent support members with a deformation area formed therebetween; The flattening construction lines involved in Step 101 are multiple first straight flattening construction lines arranged at intervals along the length direction of the support member; A first oblique flattening construction line is arranged between any two adjacent first straight flattening construction lines.

2. The method for flattening the concavo-convex deformation of the local area of the ship sheet according to claim 1, characterized in that The flattening construction lines are oblique flattening construction lines, and multiple oblique flattening construction lines are arranged in an array along the length direction and the width direction of the deformation area, and construction is carried out from both sides of the deformation area towards the middle according to the flattening construction lines.

3. The method for flattening the concavo-convex deformation of the local area of the ship's thin plate according to claim 1, wherein The flattening construction lines are T-shaped flattening construction lines, and multiple T-shaped flattening construction lines are sequentially arranged along the length direction and the width direction of the deformation area, and construction is carried out from both sides of the deformation area towards the middle according to the flattening construction lines.

4. The method for flattening the concavo-convex deformation of the local area of the ship's thin plate according to claim 3, wherein Any one of the T-shaped flattening construction lines is composed of inclined lines at a 45° angle to the width direction of the deformation area.

5. The method for flattening the concave and convex deformation of the local area of the ship thin plate according to claim 1, wherein, The flattening construction lines are X-shaped flattening construction lines, and multiple X-shaped flattening construction lines are arranged in two columns extending along the length direction of the support member, wherein one column of X-shaped flattening construction lines is arranged on one side of the deformation area, and the other column of X-shaped flattening construction lines is arranged on the opposite side of the deformation area.

6. The method for flattening the concavo-convex deformation of a local area of a ship thin plate according to claim 1, wherein, The flattening construction lines are X-shaped flattening construction lines, and multiple X-shaped flattening construction lines are arranged in multiple columns extending along the length direction of the support member, and multiple columns of X-shaped flattening construction lines are sequentially arranged at intervals along the width direction of the deformation area, and construction is carried out from both sides of the deformation area towards the middle according to the flattening construction lines.

7. The method for flattening the concavo-convex deformation of a local area of a ship thin plate according to claim 1, characterized in that, After Step 101, the following steps are also included: Step 102: Offset the support member a preset distance towards the deformation area of the ship support plate, and then heat and correct the ship support plate.

8. The method for flattening the concave-convex deformation of a local area of a ship sheet according to claim 7, characterized in that, The flattening construction lines involved in Step 102 are multiple second straight flattening construction lines arranged at intervals along the length direction of the support member.

9. The method for flattening the concave-convex deformation of the local area of the ship sheet according to claim 8, characterized in that, A second oblique flattening construction line is arranged between any two adjacent second straight flattening construction lines.

10. The method for flattening the concavo-convex deformation of a local area of a ship thin plate according to any one of claims 1 to 9, characterized in that, The heating and flattening method is electromagnetic induction heating and flattening, and it is deep penetration heating or surface heating; and / or In Step 100 and Step 200, the following steps are also included: Real-time detect the deformation amount of the deformation area of the ship support plate, and then determine the number and arrangement of the flattening construction lines; and / or After Step 200, Step 300 is also included: Naturally cool or water cool the heated ship support plate.

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