CN115156795A - Welding pretreatment method for plate unit - Google Patents

Welding pretreatment method for plate unit Download PDF

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Publication number
CN115156795A
CN115156795A CN202210661813.XA CN202210661813A CN115156795A CN 115156795 A CN115156795 A CN 115156795A CN 202210661813 A CN202210661813 A CN 202210661813A CN 115156795 A CN115156795 A CN 115156795A
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CN
China
Prior art keywords
welding
rib
backing plate
plate
end surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210661813.XA
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Chinese (zh)
Inventor
陈宏领
杨伟锋
陈文良
徐勋
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Guangzhou Wenchuan Heavy Industry Co ltd
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Guangzhou Wenchuan Heavy Industry Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangzhou Wenchuan Heavy Industry Co ltd filed Critical Guangzhou Wenchuan Heavy Industry Co ltd
Priority to CN202210661813.XA priority Critical patent/CN115156795A/en
Publication of CN115156795A publication Critical patent/CN115156795A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/0426—Fixtures for other work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

The invention relates to the technical field of plate unit pretreatment, and discloses a plate unit welding pretreatment method, which comprises the steps of intersecting a welding surface of a backing plate with an end surface of a U rib, enabling the backing plate to protrude out of the end part of the U rib, and enabling the end part of the backing plate to form a gap with a panel; welding the end part of the backing plate and the panel, and filling the gap; and welding the position where the welding surface of the backing plate is connected with the end surface of the U rib, and forming a continuous welding seam at the position where the welding surface of the backing plate is connected with the end surface of the U rib. The beneficial effects are that: by welding the end part of the backing plate and the panel and filling the interval between the backing plate and the panel, the method can reduce the dead angle position between the U rib and the backing plate and avoid the condition that impurities such as rust, paint and the like are easy to remain after the U rib and the embedded part are welded; the continuous welding seam is formed at the connecting position of the welding surface of the backing plate and the end surface of the U rib, so that the working personnel can conveniently remove impurities such as rust or paint through a polishing method, and the welding quality of the U rib repairing piece on the welding seam is prevented from being influenced.

Description

Welding pretreatment method for plate unit
Technical Field
The invention relates to the technical field of plate unit pretreatment, in particular to a welding pretreatment method of a plate unit.
Background
In the related art, the panel unit is composed of a panel and a U-rib mounted on the panel, and the U-rib can increase the torsional moment of inertia of the panel. The adjacent panels are often welded with U-ribs by means of a patch to complete the butt joint, thereby increasing the area of the panel unit to suit the requirements of the actual situation.
Since the panel, the U-rib, and the panel may have errors during the process, the formed panel unit is easily corroded by the external environment. In the case of long-term open stacking or poor protection of the coating paste, the dead corners of the plate units are prone to remain with impurities such as rust, paint, and the like. Due to the limitation of geometric dimension and shape, impurities in gap dead corners are difficult to remove by polishing and the like. The impurities remaining in the gap cause a complicated chemical reaction at the time of U-rib welding, further affecting the quality of the plate unit.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the formed plate unit is easily corroded by the influence of the external environment.
In order to solve the above technical problems, the present invention provides a welding pretreatment method of a panel unit, applied to a panel unit including a panel and a U rib mounted to the panel, comprising:
intersecting the welding surface of the backing plate with the end surface of the U rib, enabling the backing plate to protrude out of the end part of the U rib, and enabling the end part of the backing plate to form a gap with the panel;
welding the end of the backing plate and the panel and filling the gap;
and welding the position where the welding surface of the backing plate is connected with the end surface of the U rib, and forming a continuous welding seam at the position where the welding surface of the backing plate is connected with the end surface of the U rib.
In the above technical solution, intersecting the welding surface of the backing plate with the end surface of the U rib specifically includes:
placing the welding surface of the backing plate on one side of the end surface of the U rib;
and welding the welding surface and the end surface of the U rib by spot welding.
In the above technical solution, the welding surface of the backing plate is the outer side surface of the backing plate.
In the above technical solution, the placing the welding surface of the backing plate on one side of the end surface of the U rib specifically includes:
and placing the welding surface of the backing plate on the lower side of the end surface of the U rib.
In the above technical solution, a receiving cavity communicating the space is formed between the backing plate and the panel, and before the welding of the end of the backing plate and the panel, the welding device further includes:
and when the interval is larger than 3mm, mounting a ceramic liner on the inner side surface of the backing plate, and separating the interval and the accommodating cavity by the ceramic liner.
In the above technical solution, after the welding the end portion of the backing plate and the panel, the method further includes:
and disassembling the ceramic liner.
In above-mentioned technical scheme, the face of weld of backing plate is including the first face of weld, second face of weld and the third face of weld that meet in proper order, the terminal surface of U rib is including the first terminal surface, second terminal surface and the third terminal surface that meet in proper order, weld through spot welding the face of weld with the terminal surface of U rib specifically includes:
welding the first welding surface and the first end surface by spot welding;
welding the second weld face and the second end face by spot welding;
and welding the third welding surface and the third end surface by spot welding.
In the above technical solution, the length of the end of the base plate protruding from the U-shaped rib is L 1 The length of the backing plate is L 2 ，L 2 >3L 1 。
In the above technical solution, the method includes:
and bending and cutting the steel bar according to the inner contour line of the U-shaped rib to form the backing plate.
In the above technical solution, the welding the position where the welding surface of the backing plate is connected to the end surface of the U rib, and forming a continuous weld at the position where the welding surface of the backing plate is connected to the end surface of the U rib specifically includes:
and carrying out continuous fillet welding on the position where the welding surface of the base plate is connected with the end surface of the U rib.
In the above technical solution, the method further comprises:
and grinding the welding surface of the backing plate and the end surface of the U rib.
Compared with the prior art, the welding pretreatment method of the plate unit provided by the embodiment of the invention has the beneficial effects that: the backing plate protrudes out of the end part of the U-shaped rib, and provides a welding position for the embedded part and the U-shaped rib; by welding the end part of the backing plate and the panel and filling the interval between the backing plate and the panel, the method can reduce the dead angle position between the U rib and the backing plate and avoid the condition that impurities such as rust, paint and the like are easy to remain after the U rib and the embedded part are welded; the method can further reduce the position of a dead angle by forming continuous welding seams at the connecting positions of the welding surface of the base plate and the end surfaces of the U ribs, thereby being beneficial to workers to conveniently remove impurities such as rust or paint through a polishing method and avoiding influencing the welding quality of the subsequent U rib repairing piece on the welding seams.
Drawings
Fig. 1 is a flowchart of a welding pretreatment method of a board unit according to an embodiment of the present invention;
FIG. 2 is a flow chart of the embodiment of the invention for securing a tie plate to a U-rib;
FIG. 3 is a flow chart of spot welding of a faying surface to an end surface according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a plate unit of an embodiment of the present invention;
FIG. 5 is a detail view of FIG. 4 at A during spot welding of the faying surface to the end surface;
FIG. 6 is a detail schematic view at A of FIG. 5 after a continuous weld is formed;
in the figure, 1, panel; 2. a U-rib; 3. a backing plate; 4. a ceramic liner.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", etc. used in the present invention are used to indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "connected," "fixed," and the like are used broadly, and for example, the terms "connected," "connected," or "fixed" may be fixed, or detachably connected, or integrated; the connection can be mechanical connection or welding connection; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1, 4, 5 and 6, a welding pretreatment method of a panel unit according to a preferred embodiment of the present invention, the panel unit including a panel 1 and a U rib 2 mounted to the panel 1, includes:
s200, intersecting the welding surface of the backing plate 3 with the end surface of the U rib 2, so that the backing plate 3 protrudes out of the end part of the U rib 2, and the end part of the backing plate 3 forms a gap with the panel 1;
s400, welding the end part of the backing plate 3 and the panel 1, and filling the gap;
s600: the welding shim plate 3 is welded at a position where the welding surface meets the end face of the U rib 2, and a continuous weld is formed at a position where the welding surface of the shim plate 3 meets the end face of the U rib 2.
The backing plate 3 protrudes out of the end part of the U rib 2 and provides a welding position for the embedded part and the U rib 2; by welding the end part of the backing plate 3 and the panel 1 and filling the space between the backing plate 3 and the panel 1, the method can reduce the dead angle position between the U rib 2 and the backing plate 3, and avoid the condition that impurities such as rust and paint are easy to remain after the U rib 2 is welded with the embedded part; the method can further reduce the position of a dead angle by forming a continuous welding seam at the position where the welding surface of the backing plate 3 is connected with the end surface of the U rib 2, thereby being beneficial to a worker to conveniently remove impurities such as rust or paint through a polishing method and avoiding influencing the welding quality of the subsequent U rib 2 embedded part to the welding seam.
Further, as shown in fig. 2, intersecting the welding surface of the backing plate 3 with the end surface of the U rib 2 specifically includes:
s210: placing the welding surface of the backing plate 3 on one side of the end surface of the U rib 2;
s220: the welding face and the end face of the U rib 2 are welded by spot welding.
It will be appreciated that the welding face of the shim plate 3 is placed on the side of the end face of the U-rib 2, providing conditions for spot welding. The welding surface and the end surface of the U rib 2 are welded by a spot welding method, and the backing plate 3 can be fixed at a proper position on the U rib 2 by the method, so that the subsequent steps are facilitated, and the pretreatment of the U rib 2 before welding is completed.
Further, the welding surface of the shim plate 3 is the outer surface of the shim plate 3.
It can be understood that, with the outer side surface of the backing plate 3 as the welding surface, the worker can directly weld the welding surface of the backing plate 3 and the end surface of the U rib 2, and the convenience of fixing the backing plate 3 on the U rib 2 can be improved.
Further, the welding surface of the backing plate 3 is placed on one side of the end surface of the U rib 2, and specifically includes:
the welding surface of the shim plate 3 is placed on the lower side of the end surface of the U rib 2.
It can be understood that the welding surface of backing plate 3 is arranged at the lower side of the end surface of U rib 2, so that the outer side surface and the end surface of backing plate 3 enclose a space for welding the repairing part, and the repairing part can shield backing plate 3 to avoid the situation that backing plate 3 suffers corrosion.
Further, as shown in fig. 1, a receiving cavity is formed between the backing plate 3 and the panel 1 to communicate with each other, and before welding the end of the backing plate 3 to the panel 1, the method further includes:
s300: when the interval is more than 3mm, the ceramic packing 4 is installed on the inner side surface of the backing plate 3, and the ceramic packing 4 is partitioned into the interval and the accommodation chamber.
It can be understood that when the interval is greater than 3mm, the melt is not easy to cool to form a weld, the ceramic liner is arranged on the inner side surface of the backing plate 3, and the ceramic liner 4 is used for separating the interval and accommodating cavities. Further, after welding the end of the backing plate 3 and the panel 1, the method further includes: s500: the ceramic liner 4 is removed.
Further, as shown in fig. 3, the welding surface of the backing plate 3 includes the first welding surface, the second welding surface and the third welding surface that meet in proper order, and the terminal surface of the U rib 2 includes the first terminal surface, the second terminal surface and the third terminal surface that meet in proper order, and the terminal surface through spot welding surface and U rib 2 specifically includes:
s221: welding the first welding surface and the first end surface by spot welding;
s222: welding the second welding surface and the second end surface through spot welding;
s223: and welding the third welding surface and the third end surface by spot welding.
It can be understood that each welding face and end face correspond to each other to carry out spot welding, and the solder joint that makes the spot welding produce forms the strong point for every welding face and end face, and then is favorable to the welding face of backing plate 3 and the terminal surface of U rib 2 to form continuous welding seam, further reduces the dead angle position to be favorable to the staff conveniently to get rid of impurity such as corrosion or paint through the method of polishing, avoids influencing the welding quality of follow-up U rib 2 embeded repair piece butt joint seam.
Further, the length of the end of the shim plate 3 protruding from the U-rib 2 is L 1 The length of the backing plate 3 is L 2 ，L 2 >3L 1 。
It will be appreciated that L 2 >3L 1 The welding surface of the backing plate 3 and the end surface of the U-shaped rib 2 can be provided when forming a continuous welding seamEnough positions are provided for supporting, so that a continuous welding seam is formed between the welding surface of the backing plate 3 and the end surface of the U rib 2, the dead angle position is further reduced, and therefore workers can conveniently remove impurities such as rust or paint through a polishing method, and the welding quality of the subsequent U rib 2 embedded part to the welding seam is prevented from being influenced.
Further, comprising:
the steel bar is bent and cut in accordance with the inner contour line of the U-rib 2 to form the backing plate 3.
It can be understood that the steel bar is bent and cut by processing according to the inner contour line of the U rib 2 and the shim plate 3 is formed, so that the gap formed when the welding surface of the shim plate 3 is connected with the end surface of the U rib 2 due to the processing error can be reduced, and the situation that the molten material leaks from the gap when a continuous welding seam is formed at the position where the welding surface of the shim plate 3 is connected with the end surface of the U rib 2 is avoided.
Further, the position that the face of weld of welding backing plate 3 meets with the terminal surface of U rib 2 to form continuous welding seam in the position that the face of weld of backing plate 3 meets with the terminal surface of U rib 2, specifically include:
the position where the welding surface of the backing plate 3 and the end surface of the U rib 2 are in contact is subjected to continuous fillet welding.
It can be understood that continuous welding seams can be formed by carrying out continuous fillet welding on the positions where the welding surfaces of the base plates 3 are connected with the end surfaces of the U ribs 2, and dead angle positions are further reduced, so that workers can conveniently remove impurities such as rust or paint through a polishing method, and the welding quality of the subsequent U rib 2 repair parts on the welding seams is prevented from being influenced.
Further, the method also comprises the following steps:
and grinding the welding surface of the backing plate 3 and the end surface of the U rib 2.
It can be understood that, the welding surface of the backing plate 3 and the end surface of the U rib 2 are polished, so that the gap formed when the welding surface of the backing plate 3 is connected with the end surface of the U rib 2 due to processing errors can be reduced, and the situation that the molten material leaks from the gap when a continuous welding seam is formed at the position where the welding surface of the backing plate 3 is connected with the end surface of the U rib 2 is avoided.
To sum up, the embodiment of the present invention provides a welding pretreatment method for a plate unit, in which a backing plate 3 protrudes from an end of a U-rib 2, and provides a welding position for an embedded part and the U-rib 2; by welding the end part of the backing plate 3 and the panel 1 and filling the space between the backing plate 3 and the panel 1, the method can reduce the dead angle position between the U rib 2 and the backing plate 3, and avoid the condition that impurities such as rust and paint are easy to remain after the U rib 2 and the embedded part are welded; the method can further reduce the position of a dead angle by forming a continuous welding seam at the position where the welding surface of the backing plate 3 is connected with the end surface of the U rib 2, thereby being beneficial to a worker to conveniently remove impurities such as rust or paint through a polishing method and avoiding influencing the welding quality of the subsequent U rib 2 embedded part to the welding seam.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (11)

1. A welding pretreatment method of a plate unit, applied to the plate unit, the plate unit including a panel and a U rib mounted to the panel, comprising:
intersecting the welding surface of the backing plate with the end surface of the U rib, enabling the backing plate to protrude out of the end part of the U rib, and enabling the end part of the backing plate to form a gap with the panel;
welding the end of the backing plate and the panel and filling the gap;
and welding the position where the welding surface of the backing plate is connected with the end surface of the U rib, and forming a continuous welding seam at the position where the welding surface of the backing plate is connected with the end surface of the U rib.
2. The welding pretreatment method of a plate unit according to claim 1, wherein the intersecting of the welding surface of the backing plate with the end surface of the U rib specifically comprises:
placing the welding surface of the backing plate on one side of the end surface of the U rib;
and welding the welding surface and the end surface of the U rib by spot welding.
3. The welding pretreatment method of a plate unit according to claim 2, wherein the welding surface of the shim plate is an outer side surface of the shim plate.
4. The welding pretreatment method of a plate unit according to claim 3, wherein the placing of the welding surface of the backing plate on one side of the end surface of the U rib specifically comprises:
and placing the welding surface of the backing plate on the lower side of the end surface of the U rib.
5. A welding pretreatment method of a plate unit according to claim 3, wherein a receiving chamber communicating with said space is formed between said backing plate and said face plate, and before said welding of an end of said backing plate and said face plate, further comprising:
and when the interval is larger than 3mm, mounting a ceramic liner on the inner side surface of the backing plate, and separating the interval and the accommodating cavity by the ceramic liner.
6. The welding pretreatment method of a plate unit according to claim 5, further comprising, after the welding of the end of the backing plate and the face plate:
and disassembling the ceramic liner.
7. The welding pretreatment method of a plate unit according to claim 2, wherein the welding surfaces of the backing plate include a first welding surface, a second welding surface, and a third welding surface which are sequentially joined, the end surfaces of the U rib include a first end surface, a second end surface, and a third end surface which are sequentially joined, and the welding surfaces and the end surfaces of the U rib are welded by spot welding, specifically including:
welding the first welding surface and the first end surface by spot welding;
welding the second weld face and the second end face by spot welding;
and welding the third welding surface and the third end surface by spot welding.
8. The welding pretreatment method of a plate unit according to claim 1, wherein a length of the end of the caul sheet protruding from the U rib is L 1 The length of the backing plate is L 2 ，L 2 >3L 1 。
9. The welding pretreatment method of a plate unit according to claim 1, comprising:
and (3) bending and cutting the steel bar according to the inner contour line of the U rib to form the base plate.
10. The welding pretreatment method of a plate unit according to any one of claims 1 to 9, wherein the welding of the position where the welding face of the backing plate meets the end face of the U rib and the formation of a continuous weld at the position where the welding face of the backing plate meets the end face of the U rib comprise:
and carrying out continuous fillet welding on the joint position of the welding surface of the backing plate and the end surface of the U rib.
11. The welding pretreatment method of a plate unit according to any one of claims 1 to 9, further comprising:
and grinding the welding surface of the backing plate and the end surface of the U rib.
CN202210661813.XA 2022-06-13 2022-06-13 Welding pretreatment method for plate unit Pending CN115156795A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210661813.XA CN115156795A (en) 2022-06-13 2022-06-13 Welding pretreatment method for plate unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210661813.XA CN115156795A (en) 2022-06-13 2022-06-13 Welding pretreatment method for plate unit

Publications (1)

Publication Number Publication Date
CN115156795A true CN115156795A (en) 2022-10-11

Family

ID=83484689

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210661813.XA Pending CN115156795A (en) 2022-06-13 2022-06-13 Welding pretreatment method for plate unit

Country Status (1)

Country Link
CN (1) CN115156795A (en)

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