A method for controlling the flatness quality of a top-built wall window structure
By welding window reinforcing ribs during the bulkhead assembly stage and conducting stress release and flatness inspections, combined with intermittent welding and diagonal intersection methods, the problem of insufficient window flatness in the ship's superstructure was solved, achieving efficient flatness control and weather tightness inspection, thus improving construction efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HUDONG ZHONGHUA SHIPBUILDINGGROUP
- Filing Date
- 2026-03-19
- Publication Date
- 2026-06-19
AI Technical Summary
In existing technologies, it is difficult to achieve the required flatness of 2mm in the window installation area of the superstructure of ships, which often requires a lot of fire-based straightening work, affecting the manufacturing cycle and quality.
By welding and fixing the outer reinforcing ribs of the window to the wall during the wall assembly stage, and conducting welding stress release and flatness inspection, combined with intermittent welding and diagonal intersection method, the flatness of the window area is ensured to meet the design requirements, and finally the wind and rain tightness inspection is carried out.
It significantly improved the flatness of the window area, reduced the need for fire straightening and panel replacement, and enhanced construction efficiency and structural integrity.
Smart Images
Figure CN122232831A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of shipbuilding technology, and in particular to a method for quality control of the flatness of the superstructure window structure. Background Technology
[0002] The superstructure of large civilian ships serves as the living quarters, navigation area, and daily living space for crew members. To meet daily living needs, windows are required on the outer walls of the corresponding cabins to improve comfort. To ensure structural stability and aesthetics, the overall flatness of the window installation areas must meet a high standard, requiring a flatness accuracy of 2mm. Currently, flatness deviations frequently occur during the segmented manufacturing and assembly processes of the relevant cabin structures. Under conventional processes, local flatness deviations often exceed 10mm. Extensive heat treatment is required during actual construction and project inspection to meet the corresponding flatness standards, and in some cases, plate replacement is necessary. This significantly impacts the shipbuilding cycle, paint coating, and overall quality. Summary of the Invention
[0003] In view of the above-mentioned problems in the prior art, the present invention provides a method for controlling the flatness quality of the upper enclosure window structure, so as to solve the technical problems of large amount of fire work, easy rework and low flatness quality in the prior art.
[0004] This invention provides a method for controlling the flatness quality of window structures in superstructures, comprising the following steps: Step S1: According to the design data, open window openings at corresponding positions in the sections of the upper enclosure wall; Step S2: During the wall assembly and construction phase, the outer reinforcing bars of the windows are welded and fixed to the wall through a continuous fillet weld on the outer edge, and the welding work of the remaining structures during the assembly phase is completed. Step S3: Release the corresponding welding stress by using flame back heating and perform flatness inspection to ensure that the flatness meets the design requirements. Step S4: In the segmented construction phase, complete the assembly and welding of the deck and concourse segments; Step S5: Weld the inner edge of the outer reinforcing rib of the window to the enclosure wall using fillet welds; Step S6: Perform a flatness inspection on the structural flatness of the window area to ensure that the flatness meets the design requirements; Step S7: Install the window into the corresponding window opening, and weld the window and the enclosure structure together using fillet welds; Step S8: Conduct a wind and rain tightness test on the windows of the outer wall to ensure that the window tightness meets the design requirements.
[0005] In one embodiment, in step S5, the fillet weld of the inner edge of the outer reinforcing rib of the window is performed by intermittent welding.
[0006] In one embodiment, in the intermittent welding method, the length of the fillet weld is 100mm, and the interruption length is 75-100mm.
[0007] In one embodiment, in steps S3 and S6, the flatness inspection adopts the diagonal intersection method.
[0008] In one embodiment, the diagonal intersection method uses chalk lines to inspect flatness.
[0009] In one embodiment, in step S6, during the diagonal intersection method detection, the flatness gap at the intersection of the detection lines does not exceed 2mm.
[0010] In one embodiment, the weld height of the fillet weld is no greater than 5 mm.
[0011] In one embodiment, in steps S2 and S5, the welding of the outer reinforcing ribs of the window is performed in accordance with the requirements of symmetrical welding process.
[0012] In one embodiment, step S3 further includes grinding the welding location and applying a primer in the workshop.
[0013] In one embodiment, during step S8, the distance between the water rinsing position and the weld is no more than 1.2 meters, and the duration is no less than 10 minutes.
[0014] Compared with the prior art, the beneficial effects of the superstructure window structure flatness quality control method provided by the present invention are as follows: the present invention significantly improves the flatness quality of the superstructure outer wall window area, enabling the superstructure to meet the corresponding tolerance standards without excessive use of abnormal methods such as backfiring and plate replacement, greatly reducing damage to the paint coating, and effectively improving the construction efficiency and integrity of the ship's superstructure. Attached Figure Description
[0015] Figure 1 A schematic diagram of the opening of a window in an upper enclosure wall, which is part of a method for controlling the flatness quality of an upper enclosure wall window structure according to an embodiment of the present invention; Figure 2 A welding diagram illustrating the assembly stage of the upper outer wall window structure, which is part of a method for controlling the flatness quality of an upper wall window structure according to an embodiment of the present invention. Figure 3 A schematic diagram of intermittent welding involved in a method for controlling the flatness quality of a window structure in an upper enclosure provided by an embodiment of the present invention; Figure 4This is a schematic diagram of a typical segmented construction of an upper-building enclosure, which is part of a method for controlling the flatness quality of window structures in an upper-building enclosure provided in an embodiment of the present invention. Detailed Implementation
[0016] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
[0017] Various embodiments and features of this application are described herein with reference to the accompanying drawings.
[0018] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.
[0019] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application, which have the features described in the claims and are therefore all within the scope of protection defined herein.
[0020] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.
[0021] Specific embodiments of this application are described below with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to ascertain the true intent based on the user's historical operations, and to avoid unnecessary or redundant details that would obscure this application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in various ways with substantially any suitable detailed structure.
[0022] 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 this application.
[0023] The principles and features of the present invention are described below with reference to the accompanying drawings. The embodiments described are for illustrative purposes only and are not intended to limit the scope of the invention. The following description, in conjunction with... Figure 1-4 The preferred embodiments of the present invention will be described in further detail below: like Figure 1-4 As shown, this embodiment of the invention provides a method for controlling the flatness quality of a window structure in an upper enclosure, comprising the following steps: Step S1: According to the design data, open window openings at corresponding positions in the sections of the upper enclosure wall; Step S2: During the wall assembly and construction phase, the outer reinforcing bars of the windows are welded and fixed to the wall through a continuous fillet weld on the outer edge, and the welding work of the remaining structures during the assembly phase is completed. Step S3: Release the corresponding welding stress by using flame back heating and perform flatness inspection to ensure that the flatness meets the design requirements. Step S4: In the segmented construction phase, complete the assembly and welding of the deck and concourse segments; Step S5: Weld the inner edge of the outer reinforcing rib of the window to the enclosure wall using fillet welds; Step S6: Perform a flatness inspection on the structural flatness of the window area to ensure that the flatness meets the design requirements; Step S7: Install the window into the corresponding window opening, and weld the window and the enclosure structure together using fillet welds; Step S8: Conduct a wind and rain tightness test on the windows of the outer wall to ensure that the window tightness meets the design requirements.
[0024] In one embodiment, in step S5, the fillet weld of the inner edge of the outer reinforcing rib of the window is performed by intermittent welding.
[0025] In one embodiment, in the intermittent welding method, the length of the fillet weld is 100mm, and the interruption length is 75-100mm.
[0026] In one embodiment, in steps S3 and S6, the flatness inspection adopts the diagonal intersection method.
[0027] In one embodiment, the diagonal intersection method uses chalk lines to inspect flatness.
[0028] In one embodiment, in step S6, during the diagonal intersection method detection, the flatness gap at the intersection of the detection lines does not exceed 2mm.
[0029] In one embodiment, the weld height of the fillet weld is no greater than 5 mm.
[0030] In one embodiment, in steps S2 and S5, the welding of the outer reinforcing ribs of the window is performed in accordance with the requirements of symmetrical welding process.
[0031] In one embodiment, step S3 further includes grinding the welding location and applying a primer in the workshop.
[0032] In one embodiment, during step S8, the distance between the water rinsing position and the weld is no more than 1.2 meters, and the duration is no less than 10 minutes.
[0033] Example 1 This invention proposes a process for achieving the flatness of the superstructure enclosure wall in a single step. By modifying the welding process of the enclosure wall structure, the flatness quality of the enclosure wall is significantly improved, reducing the requirements for subsequent fire-working operations. The specific steps are as follows. Step 1: As Figure 1 As shown, the corresponding structure has the following characteristics: the upper structure has 7 to 8 floors, the overall height is nearly 30 meters, the window structure is dense, and there are nearly 10 to 20 windows arranged on each single deck section, and the corresponding windows are all CNC-cut during the processing and cutting stage.
[0034] Step Two: As Figure 2 As shown, based on the window edge structure design, only one corner weld on the outer side of the window is welded during the enclosure assembly construction phase. The other corner weld is subject to intermittent welding requirements, and this intermittent welding is performed after the subsequent sections are completed. Figure 2 The symbol \\\\\\ indicates a continuous fillet weld. The symbol indicates intermittent welding.
[0035] Step 3: After completing the welding work of the remaining structures in the assembly stage, the corresponding welding stress release fire back-burning work is carried out. Only after the flatness inspection is qualified can it enter the subsequent stage for the corresponding segmented construction process. The welding and burning positions are ground and the workshop primer is applied in a follow-up manner to reduce the corrosion of the corresponding weld areas. This stage only completes the continuous welding of the outer corner welds.
[0036] Step Four: As Figure 4 As shown, the corresponding superstructure sections complete the deck panel assembly, marking, frame assembly, welding and other processes according to the construction flowchart. Then, the components A, B and C shown by the arrows are hoisted to the deck base to complete the assembly of the bulkhead. The frame structure of the corresponding sections is completed and the corresponding welding work is carried out.
[0037] Step 5: According to Figure 3 As shown, the fillet welds of the inner ring of the window that have not yet been welded are welded according to the corresponding welding length and interruption length. The length of the fillet weld is 100mm and the interruption length is 75-100mm. The welding of the fillet welds in the corresponding area is carried out in accordance with the requirements of symmetrical welding process.
[0038] Step Six: After welding is completed, inspect the flatness of the window area. Starting from the intersection of the structural points around the window, use the diagonal intersection method with chalk lines to inspect the flatness of the structure. The flatness gap at the intersection should not exceed 2mm.
[0039] Step 7: After the flatness of the enclosure structure passes the inspection, install the corresponding windows. For windows that are corner welded to the enclosure structure, the welding heat input must be strictly controlled, and the height of the corner weld must not exceed 5mm.
[0040] Step 8: For the windows on the outer wall, a water tightness test should be conducted. During the water test, the distance from the weld should not be greater than 1.2 meters, and the duration should not be less than 10 minutes. Afterwards, check the leakage of the internal fillet weld. If there is no water seepage, the test is considered successful.
[0041] In this embodiment of the invention, by segmenting the weld seams of the inner and outer rings of the reinforcing ribs, concentrated heat input is avoided. At the same time, the inner ring side is constructed after the enclosure wall is in place and formed as a whole, based on the use of interval welding to minimize heat input. By increasing the edge constraints of adjacent enclosure wall segments, the amount of welding deformation is further reduced, and the flatness of the upper enclosure wall window structure is effectively controlled.
[0042] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.
Claims
1. A method for controlling the flatness quality of a window structure in an upper enclosure, characterized in that, Includes the following steps: Step S1: According to the design data, open window openings at corresponding positions in the sections of the upper enclosure wall; Step S2: During the wall assembly and construction phase, the outer reinforcing bars of the windows are welded and fixed to the wall through a continuous fillet weld on the outer edge, and the welding work of the remaining structures during the assembly phase is completed. Step S3: Release the corresponding welding stress by using flame back heating and perform flatness inspection to ensure that the flatness meets the design requirements. Step S4: In the segmented construction phase, complete the assembly and welding of the deck and concourse segments; Step S5: Weld the inner edge of the outer reinforcing rib of the window to the enclosure wall using fillet welds; Step S6: Perform a flatness inspection on the structural flatness of the window area to ensure that the flatness meets the design requirements; Step S7: Install the window into the corresponding window opening, and weld the window and the enclosure structure together using fillet welds; Step S8: Conduct a wind and rain tightness test on the windows of the outer wall to ensure that the window tightness meets the design requirements.
2. The method for controlling the flatness quality of the window structure of an upper enclosure according to claim 1, characterized in that: In step S5, the fillet weld of the inner edge of the outer reinforcing rib of the window is made by intermittent welding.
3. The method for controlling the flatness quality of the window structure of an upper enclosure according to claim 2, characterized in that: In the intermittent welding method, the length of the fillet weld is 100mm, and the interruption length is 75-100mm.
4. The method for controlling the flatness quality of a window structure in an upper enclosure according to claim 1, characterized in that: In steps S3 and S6, the flatness inspection adopts the diagonal intersection method.
5. The method for controlling the flatness quality of the window structure of an upper enclosure according to claim 4, characterized in that: The diagonal intersection method uses chalk lines to inspect flatness.
6. The method for controlling the flatness quality of a window structure in an upper enclosure according to claim 4, characterized in that: In step S6, during the diagonal intersection method detection, the flatness gap at the intersection of the detection lines shall not exceed 2mm.
7. The method for controlling the flatness quality of a window structure in an upper enclosure according to claim 1, characterized in that: The weld height of the fillet weld shall not exceed 5mm.
8. The method for controlling the flatness quality of a window structure in an upper enclosure according to claim 1, characterized in that: In steps S2 and S5, the welding of the outer reinforcing ribs of the window shall be carried out in accordance with the requirements of symmetrical welding process.
9. The method for controlling the flatness quality of a window structure in an upper enclosure according to claim 1, characterized in that: Step S3 also includes grinding the welding and soldering positions and applying primer in the workshop.
10. The method for controlling the flatness quality of a window structure in an upper enclosure according to claim 1, characterized in that: In step S8, during the water flushing test, the distance between the water flushing position and the weld should not exceed 1.2 meters, and the duration should not be less than 10 minutes.