Welding method for operating assembly gasket on front face of component

Abstract

The invention discloses a welding method for operating an assembly gasket on the front face of a component and relates to the field of welding. The welding method for operating and assembling the gasket on the front face of the component comprises the steps that an assembling gap center line is marked on the gasket, adhesive tapes are pasted on the non-lineation bottom face and the pasting areas on the two side faces of the gasket respectively, and the adhesive tapes pasted on the two side faces of the gasket are attached to the lineation bottom face of the gasket. The adhesive tapes adhered to the two side surfaces of the liner are folded and adhered at the center line of the assembly gap to form a traction end; the liner is hoisted through the traction end to penetrate through the welding seam of the component and extend into one side of the back of the component; the traction end is adjusted to enable the center line of the assembly gap to be located in the center of a weld seam of the component and then tensioned upwards, and the gasket is attached to the component; spot welding is conducted on the non-sticking area of the gasket at intervals; and removing the adhesive tape and then welding a groove welding seam. According to the welding method for operating and assembling the gasket on the front face of the component, gasket welding can be conducted on one side of the back face of the component with a small assembling gap under the condition that the component is not disassembled.

Description

Technical Field

[0001] The present application relates to the field of welding, and in particular to a welding method for operating an assembly gasket on the front side of a component. Background Art

[0002] Welding backing is a kind of backing device which is pre-installed along the back of welding joint to ensure the penetration of the root of the joint and the formation of the back of the weld. The backing is one of the most commonly used backings in the field of steel structure production, manufacturing and installation. It can avoid the back of the gas gouging and overhead welding, and solve the welding problems in narrow and closed spaces, thereby reducing the labor intensity of workers and improving the welding quality. It is widely used in welding operations.

[0003] For steel components that form narrow spaces or sealed spaces after assembly, since the butt gap is small and the back of the steel component cannot be assembled with a gasket due to limited space, it is easy to burn through during welding because there is no gasket to cover the bottom. The welding is extremely difficult and the weld quality cannot be guaranteed. The components that have been assembled and welded need to be dismantled, which is bound to result in rework waste.

[0004] Therefore, a welding method for operating a mounting pad on the front side of a component is needed to solve the above problems. Summary of the invention

[0005] The object of the present application is to provide a welding method for operating an assembly gasket on the front side of a component, which can perform gasket welding on the back side of a component with a small assembly gap without removing the component.

[0006] This application is implemented as follows:

[0007] The present application provides a welding method for operating an assembly gasket on the front side of a component, comprising the following steps:

[0008] Mark the center line of the assembly gap on the gasket;

[0009] Adhesive tape is applied to the non-marked bottom surface and the adhesive areas on both sides of the gasket;

[0010] The adhesive tapes pasted on both sides of the gasket are pasted on the marked bottom surface of the gasket, so that the adhesive tapes pasted on both sides of the gasket are pasted together at the center line of the assembly gap to form a pulling end;

[0011] Use the pulling end to lift the pad through the weld gap of the component and extend it to the back side of the component;

[0012] Adjust the pulling end so that the center line of the assembly gap is located at the center of the weld gap of the component, and then tighten it upward to make the gasket fit the component;

[0013] Spot welds are made at intervals on the non-bonded areas of the gasket;

[0014] Weld the groove weld after removing the tape.

[0015] In some optional embodiments, before the tapes pasted on both sides of the gasket are affixed to the scored bottom surface of the gasket, release paper is respectively affixed to adjacent sides of the tapes pasted on both sides of the gasket, and the release paper is affixed to the scored bottom surface of the gasket when the tapes pasted on both sides of the gasket are affixed together at the center line of the assembly gap.

[0016] In some optional embodiments, when removing the adhesive tape, the release paper is removed by flame drying and sanding.

[0017] In some optional embodiments, the distance between the adhesive area on the liner and the end of the liner is more than 150 mm.

[0018] In some optional embodiments, the spacing between two adhesive areas on the pad is between 250-350 mm.

[0019] In some optional embodiments, the center line of the assembly gap on the gasket is eccentrically arranged. After the pulling end is adjusted so that the center line of the assembly gap is located at the center of the weld gap of the component and then pulled upward, the narrow edge of the tape pasted on one side of the gasket is pressed to make the gasket fit parallel to the back of the component.

[0020] In some optional embodiments, the adhesive tape is a cloth-based adhesive tape with a thickness of less than 1 mm.

[0021] In some optional embodiments, the length of the pad is 2-4 mm shorter than the length of the weld gap.

[0022] The beneficial effects of the present application are as follows: the welding method provided by the present application for operating the assembly gasket on the front side of a component comprises the following steps: marking the center line of the assembly gap on the gasket; pasting adhesive tape on the non-marked bottom surface and the pasting areas on both sides of the gasket respectively; pasting the adhesive tape pasted on both sides of the gasket on the marked bottom surface of the gasket, so that the adhesive tape pasted on both sides of the gasket are pasted together at the center line of the assembly gap to form a pulling end; using the pulling end to lift the gasket through the weld gap of the component and extend it to the back side of the component; adjusting the pulling end so that the center line of the assembly gap is located at the center of the weld gap of the component and then pulling it upward to make the gasket fit the component; spot welding at intervals in the non-pasting area of ​​the gasket; and welding the groove weld after removing the adhesive tape. The present application provides a welding method for assembling a gasket on the front side of a component, by using adhesive tape to stick the non-lined bottom surface and both sides of the gasket, and the adhesive tapes stuck on both sides of the gasket are pasted together at the center line of the assembly gap to form a pulling end, so that the user can use the pulling end to lift the gasket, pass it through the weld gap of the component, extend it to the back side of the component, tighten it upwards and align it to the center before welding, thereby welding the gasket on the back side of the component in a small space or in a confined space without removing the component. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 A schematic flow chart of a welding method for operating an assembly gasket on the front side of a component provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of a structure for dividing the center line of the assembly gap on the gasket when a butt joint is formed in a welding method for assembling the gasket on the front side of a component provided in an embodiment of the present application;

[0026] Figure 3 A schematic diagram of a structure for dividing the center line of the assembly gap on the gasket when a fillet joint is formed in a welding method for assembling the gasket on the front side of a component provided in an embodiment of the present application;

[0027] Figure 4 A schematic diagram of a structure for dividing a gasket into a sticking area and a non-sticking area in a welding method for assembling a gasket on the front side of a component provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of a structure for sticking adhesive tape on a gasket in a welding method for assembling a gasket on the front side of a component provided in an embodiment of the present application;

[0029] Figure 6 A schematic diagram of a structure in which isolation paper is pasted on adhesive tapes on both sides of a gasket in a welding method for operating and assembling a gasket on the front side of a component provided in an embodiment of the present application;

[0030] Figure 7 A schematic diagram of a structure in which a tape adhered to one side of a gasket is attached to a marked bottom surface of the gasket in a welding method for assembling a gasket on the front side of a component provided in an embodiment of the present application;

[0031] Figure 8 A schematic diagram of the structure of forming a pulling end after the adhesive tapes pasted on both sides of the gasket are pasted together at the center line of the assembly gap in the welding method for operating the gasket on the front side of the component provided in the embodiment of the present application;

[0032] Fig. 9 A structural schematic diagram of a welding method for assembling a gasket on the front side of a component provided in an embodiment of the present application, using a pulling end to lift the gasket through the weld seam gap of the component and extend it to the back side of the component;

[0033] Fig.10A schematic diagram of the structure when the pulling end is adjusted so that the center line of the assembly gap is located at the center of the weld gap 180 of the component and then pulled upward in the welding method for operating the assembly gasket on the front side of the component provided by the embodiment of the present application;

[0034] Fig.11 A schematic structural diagram of spot welding at intervals in a non-adhesive area of ​​a gasket in a butt joint form in a welding method for assembling a gasket on the front side of a component provided in an embodiment of the present application;

[0035] Fig.12 A schematic structural diagram of the spot welding at intervals in the non-adhesive area of ​​the gasket in the form of a fillet joint in a welding method for assembling the gasket on the front side of a component provided in an embodiment of the present application.

[0036] In the figure: 100, component; 110, gasket; 120, tape; 130, pulling end; 140, center line of assembly gap; 150, adhesive area; 160, non-adhesive area; 170, board ruler; 180, weld gap; 190, isolation paper. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. 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.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0041] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0042] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0044] The features and performance of the welding method for operating the assembly gasket on the front side of the component of the present application are further described in detail below in conjunction with the embodiments.

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 As shown, an embodiment of the present application provides a welding method for operating an assembly gasket on the front side of a component, comprising the following steps:

[0046] Step 1, determine the welding form of the component 100 to be welded; the welding forms of the component 100 mainly include butt joints and fillet joints. In order to achieve full penetration welding and only single-sided welding is possible, a steel liner 110 must be installed on the back side of the component 100 in a small space or in a confined space for welding.

[0047] Step 2: Figure 2 and Figure 3 As shown, after the beveling treatment is performed on the area to be welded of the component 100, the assembly gap center line 140 is drawn on the gasket 110. The position of the assembly gap center line 140 is the projection of the center line of the weld gap 180 on the gasket 110 when the gasket 110 is installed on the back of the component 100; optionally, the length of the gasket 110 is 2-4 mm shorter than the length of the weld gap 180.

[0048] Step 3: Figure 4 As shown, a sticking area 150 and a non-sticking area 160 of the adhesive tape 120 are determined on the pad 110; optionally, the distance between the sticking area 150 on the pad 110 and the end of the pad 110 is more than 150 mm. Optionally, the distance between the two sticking areas 150 on the pad 110 is between 250-350 mm. Optionally, the adhesive tape 120 is a cloth-based adhesive tape with a thickness of less than 1 mm.

[0049] Step 4: Figure 5 As shown, adhesive tape 120 is respectively pasted on the non-lined bottom surface and the pasting areas 150 on the two side surfaces of the liner 110; optionally, the distance between the adhesive tape 120 and the end of the liner 110 is more than 300 mm.

[0050] like Figure 6 As shown, the adjacent sides of the adhesive tapes pasted on the two sides of the gasket 110 are pasted with release paper 190 respectively, and when the adhesive tapes pasted on the two sides of the gasket 110 are pasted together at the center line of the assembly gap, the release paper 190 is pasted to the marked bottom surface of the gasket 110. The marked bottom surface refers to the surface of the gasket 110 where the center line 140 of the assembly gap is marked.

[0051] Step 5: Figure 7 and Figure 8 As shown, the tape 120 pasted on both sides of the gasket 110 is adhered to the marked bottom surface of the gasket 110, so that the tape 120 pasted on both sides of the gasket 110 is pasted together at the center line of the assembly gap to form a pulling end 130; optionally, a ruler 170 is used to push the tape 120 to adhere to the marked bottom surface of the gasket 110.

[0052] Step 6: Fig. 9 As shown, the liner 110 is lifted up using the pulling end 130 and extended through the weld gap 180 of the component to the back side of the component.

[0053] Step 7: Fig.10 As shown, the pulling end 130 is adjusted so that the center line 140 of the assembly gap is located at the center of the weld gap 180 of the component 100, and then the gasket 110 is pulled upward to fit the component 100; in the case where the center line 140 of the assembly gap on the gasket 110 is eccentrically arranged, the pulling end 130 is adjusted so that the center line of the assembly gap is located at the center of the weld gap 180 of the component, and then the gasket 110 is pulled upward to fit the component 100, and a tool is used to press the raised narrow edge of the tape 120 pasted on one side of the gasket 110, so that the gasket 110 is parallel to the back of the component 100. Optionally, the tapes 120 are pasted on the component 100 to connect the gasket 110 that fits the component 100.

[0054] Step 8: Fig.11 and Fig.12 As shown, the non-adhesive area 160 of the gasket 110 is spot welded at intervals.

[0055] Step 9: Use fire baking and grinding to remove the isolation paper 190, remove the tape 120, and then weld the groove weld normally.

[0056] The welding method for assembling a gasket on the front of a component provided in the embodiment of the present application is as follows: the center line 140 of the assembly gap is marked on the gasket 110, and adhesive tapes 120 are respectively pasted on the non-marked bottom surface and the pasting areas 150 on the two sides of the gasket 110, and the adhesive tapes 120 pasted on the two sides of the gasket 110 are pasted on the marked bottom surface of the gasket 110, so that the adhesive tapes 120 pasted on the two sides of the gasket 110 are pasted together at the center line of the assembly gap to form a pulling end 130, and the gasket 110 is lifted by the pulling end 130 and passed through the weld gap 180 of the component to the back side of the component 100 and then aligned The center of the weld gap 180 is pulled upward, so that the gasket 110 is attached to the component 100 and spot welded at intervals in the non-adhesive area 160. After removing the tape 120, the groove weld is welded normally. When the weld gap 180 is only 2-4 mm larger than the thickness of the gasket 110, the gasket 110 can be passed through the weld gap 180 and attached to the back of the component 100 for welding. Therefore, the gasket 110 can be installed on the back side of the component 100 in a small space or in a confined space for welding without dismantling or destroying the original component 100, thereby solving the problem that the weld formed on one side and on both sides cannot be melted through, thereby ensuring the quality of the weld.

[0057] Among them, when assembling the gasket 110 for the corner weld, because the pulling end 130 of the tape 120 on the gasket 110 is eccentric with the center line 140 of the assembly gap, the gasket 110 is tilted under the action of gravity. It is necessary to use a tool to press the raised narrow edge of the inclined tape 120 pasted on one side of the gasket 110 to level the gasket 110 so that the gasket 110 can be horizontally fitted to the back of the component 100 and assembled into place.

[0058] Among them, when assembling the gasket 110 for a non-flat weld, the gasket 110 cannot be flush with the assembly edge due to the pulling of the tape 120 and the effect of gravity. It is also necessary to use a tool to push or press one side of the gasket 110 to make the gasket 110 fit the back of the component 100 and be assembled into place.

[0059] After the gasket 110 is installed in place, other debris in the weld area needs to be removed. Therefore, the assembly and fitting surface of the gasket 110 is isolated by using the isolation paper 190 when the adhesive tape 120 is pasted, so that the isolation paper 190 in the weld area can be removed by fire baking and grinding and cutting. If the isolation paper 190 is not used, the gasket 110 can also be assembled. The adhesive tape 120 in the weld area needs to be torn off by hand to clean it. However, considering the groove width and depth of the weld area, it is not convenient to do it by hand, and the adhesive base may be left on the gasket 110, which may bring certain hidden dangers to the quality of the weld.

[0060] The embodiments described above are part of the embodiments of the present application, rather than all of the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the present application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

Claims

1. A welding method for operating an assembly gasket on the front side of a component, characterized in that: The following steps are involved: Mark the center line of the assembly gap on the gasket; Adhesive tapes are respectively applied to the adhesive areas of the non-marked bottom surface and the two side surfaces of the liner; The adhesive tapes pasted on the two sides of the gasket are pasted on the marked bottom surface of the gasket, so that the adhesive tapes pasted on the two sides of the gasket are pasted together at the center line of the assembly gap to form a pulling end; Using the pulling end, the pad is lifted and passed through the weld gap of the component to the back side of the component; Adjust the pulling end so that the center line of the assembly gap is located at the center of the weld gap of the component, and then tighten it upward to make the gasket fit the component; Spot welding at intervals on the non-adhesive area of ​​the gasket; The groove weld is welded after removing the adhesive tape.

2. The welding method for operating the assembly gasket on the front side of the component according to claim 1, characterized in that: Before the tapes pasted on both sides of the gasket are affixed to the scored bottom surface of the gasket, isolation paper is respectively pasted on adjacent sides of the tapes pasted on both sides of the gasket, and the isolation paper is made to affix to the scored bottom surface of the gasket when the tapes pasted on both sides of the gasket are abutted at the center line of the assembly gap.

3. The welding method for operating the assembly gasket on the front side of the component according to claim 2, characterized in that: When removing the adhesive tape, fire drying and grinding are used to remove the release paper.

4. The welding method for operating the assembly gasket on the front side of the component according to claim 1, characterized in that: The distance between the sticking area on the gasket and the end of the gasket is more than 150 mm.

5. The welding method for operating the assembly gasket on the front side of the component according to claim 1, characterized in that: The distance between the two adhesive areas on the pad is between 250-350 mm.

6. The welding method for operating the assembly gasket on the front side of the component according to claim 1, characterized in that: The center line of the assembly gap on the gasket is arranged eccentrically. When the pulling end is adjusted so that the center line of the assembly gap is located at the center of the weld gap of the component and then pulled upward, the raised narrow edge of the tape pasted on one side of the gasket is pressed to make the gasket fit parallel to the back of the component.

7. The welding method for operating the assembly gasket on the front side of the component according to claim 1, characterized in that: The adhesive tape is a cloth-based adhesive tape with a thickness of less than 1 mm.

8. The welding method for operating the assembly gasket on the front side of the component according to claim 1, characterized in that: The length of the gasket is 2-4 mm shorter than the length of the weld gap.

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