CN107414331A - A kind of discontinuous fillet welding method - Google Patents

A kind of discontinuous fillet welding method Download PDF

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Publication number
CN107414331A
CN107414331A CN201710755815.4A CN201710755815A CN107414331A CN 107414331 A CN107414331 A CN 107414331A CN 201710755815 A CN201710755815 A CN 201710755815A CN 107414331 A CN107414331 A CN 107414331A
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China
Prior art keywords
groove
workpiece
fillet welding
length
welding method
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CN201710755815.4A
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CN107414331B (en
Inventor
魏涛
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Guangzhou Shipyard International Co Ltd
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Guangzhou Shipyard International Co Ltd
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Priority to CN201710755815.4A priority Critical patent/CN107414331B/en
Priority to PCT/CN2017/105974 priority patent/WO2019041458A1/en
Publication of CN107414331A publication Critical patent/CN107414331A/en
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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
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • 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

Abstract

The present invention discloses a kind of discontinuous fillet welding method, the first workpiece and second workpiece for treating fillet welding are provided, some grooves of machine-shaping are spaced along its length in the welding ends of the first workpiece, thickness direction of the groove along the first workpiece is set to run through the first workpiece, then welding ends cornerite is soldered to the surface of second workpiece, to form some annular weld seams.The present invention processes several spaced grooves in the welding ends of the first workpiece, then the welding ends cornerite is welded on to the surface of second workpiece, opposite side of the weld seam of formation by the side of the first workpiece through the groove around to first workpiece, form the full pack arrangement of annular, the gap between weld seam and two workpiece can be made to be completely sealed in weld seam, avoid forming ponding in the gap location and influenceed and corrosion by wet environment；Unwelded place is fluted simultaneously, can be protected completely with spray paint in the range of groove, avoid moisture retention in the groove corrosion.

Description

A kind of discontinuous fillet welding method
Technical field
The present invention relates to structure welding technical field, and in particular to a kind of discontinuous fillet welding method.
Background technology
The material that Ship body structure uses all is steel, and the assembling of these steel constructions is connected using welding manner, Almost all of junction is required for welding.In the upper strata residential area of Ship Structure, design has used a large amount of 3~8mm thickness Steel and a small amount of aluminium alloy and stainless steel, while on to build structural bearing load little, it is contemplated that plate is thin, welding deformation Weight, correction workload is big, and the bonding strength for meeting to require is reached while in order to reduce deformation, and wherein corner connection weld seam largely uses Interruption welding replaces continuous welding, to reduce thermal weld stress amount reaches upper strata residential area Ship Structure product glacing flatness Quality requirement.
It is only that arid region aggregate is adopted with interior leg or deck to build structure in all ship-related products that company builds at present Connect in succession with a section leg, as depicted in figs. 1 and 2, the discontinuous fillet welding of the first workpiece 1 ' is on the surface of second workpiece 2 '.First work There is fit-up gap in the place for not having welding between part 1 ' and second workpiece 2 ', the region paint between gap can not spray guarantor Protect, when running into rainy situation in outdoor manufacturing process, easily infiltration causes corrosion to the gap between two workpiece；With And during ship rides the sea, above build the indoor and outdoors temperature difference greatly and humidity produces condensed water, moisture penetration to two works Part causes corrosion, have impact on the service life of steel, threatened the safe to use of ship without the gap the inside of welding. At present, the Normal practice for solving the problem is to be revised as continuously welding by intermittent weld welding, and being designed as continuous welding can be effective Prevent moisture penetration from causing corrosion to unwelded part, but welding job amount and cost increase can be caused, and welding Deformation increases and correction deformation operation amount increases, and has influence on production efficiency and the cost control of ship.
The content of the invention
It is an object of the invention to provide a kind of discontinuous fillet welding method, prevents the gap between two workpiece after welding Get rusty and workpiece deforms.
To use following technical scheme up to this purpose, the present invention：
There is provided a kind of discontinuous fillet welding method, there is provided the first workpiece and second workpiece of fillet welding are treated, in first workpiece Welding ends be spaced some grooves of machine-shaping along its length, pass through thickness direction of the groove along first workpiece First workpiece is worn, then the welding ends cornerite is soldered to the surface of the second workpiece, it is some annular to be formed Weld seam.
As a kind of preferred scheme of discontinuous fillet welding method, the length direction of the length of the groove along the welding ends Extension, and the distance between two neighboring described groove is equal.
As a kind of preferred scheme of discontinuous fillet welding method, the length of the groove is L, the length L=75mm~ 150mm。
As a kind of preferred scheme of discontinuous fillet welding method, the height of first workpiece is H, the groove depth of the groove For h, wherein, the groove depth h≤0.25H, and the groove depth h≤75mm.
As a kind of preferred scheme of discontinuous fillet welding method, the length L of the groove and groove depth h of groove ratio Value L/h≤2.
As a kind of preferred scheme of discontinuous fillet welding method, the first circular arc is used between the bottom land and cell wall of the groove Transition.
As a kind of preferred scheme of discontinuous fillet welding method, the radius of first circular arc is R1, the radius R1 >= 25mm。
As a kind of preferred scheme of discontinuous fillet welding method, justified between the bottom land and cell wall of the groove using anti-S types Arc transition, the anti-S types circular arc include the second circular arc and three-arc, and the radius R2 of second circular arc is more than the described 3rd circle The radius R3 of arc, one end of second circular arc are connected with the bottom land, and the other end is connected with one end of the three-arc, institute The one end of three-arc away from second circular arc is stated to be connected with the cell wall.
As a kind of preferred scheme of discontinuous fillet welding method, the height of the cell wall is 10~25mm.
As a kind of preferred scheme of discontinuous fillet welding method, comprise the following steps：
S10, require to design the structure of the groove and size according to the intensity and fatigue of workpiece and draw the groove Figure, arc transition is used between the cell wall and bottom land of the groove, the length L of the groove and groove depth h's of the groove Ratio L/h≤2, and the length L=75mm~150mm；Groove depth h≤the 0.25H, and the groove depth h≤75mm；It is described recessed The length L of the groove and groove depth h of groove ratio L/h≤2；Arc radius R >=the 25mm, the height of the cell wall is 10 ~25mm；
S20, shear-bow intensity and stress concentration value using groove structure described in modeling Analysis, and adjust The shape and size of the groove, until the shearing of the groove structure and shear strength and stress concentration value meet the work The intensity requirement of part；
S30, according to the shape and size of the groove structural modeling is carried out, obtain the structure of the groove；
S40, according to groove described in welding ends excision forming of the structure of the groove in the workpiece；
S50, the workpiece surface that the welding ends cornerite of the workpiece is welded on to another unslotted, after sanding spray painting, complete Welding.
Beneficial effects of the present invention：The present invention processes several spaced grooves in the welding ends of the first workpiece, Then the welding ends cornerite is welded on to the surface of second workpiece, the weld seam of formation by the first workpiece side through the groove around to The opposite side of first workpiece, the full pack arrangement of annular is formed, the gap between weld seam and two workpiece can be fully sealed In weld seam, avoid forming ponding in the gap location and influenceed and corrosion by wet environment；Unwelded place has recessed simultaneously Groove, it can be protected completely with spray paint in the range of groove, avoid moisture retention in the groove corrosion.
Brief description of the drawings
Fig. 1 is the discontinuous fillet welding schematic diagram of existing two workpiece.
Fig. 2 is A-A in Fig. 1 to sectional view.
Fig. 3 is first workpiece of one embodiment of the invention and the discontinuous fillet welding schematic diagram of second workpiece.
Fig. 4 is the enlarged drawing of I parts (unwelded) in Fig. 3.
Fig. 5 is first workpiece of another embodiment of the present invention and the discontinuous fillet welding schematic diagram of second workpiece.
Fig. 6 is the B-B direction sectional view in Fig. 5.
Fig. 7 is the enlarged drawing of II parts (unwelded) in Fig. 5.
In Fig. 1：
1 ', first workpiece；2 ', second workpiece；3 ', weld seam.
Fig. 2 is into Fig. 7：
1st, the first workpiece；2nd, second workpiece；3rd, groove；31st, bottom land；32nd, cell wall；33rd, the first circular arc；34th, the second circular arc； 35th, three-arc；4th, weld seam.
Embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by embodiment.
In the description of the invention, it is to be understood that the orientation or position relationship of the instruction such as term " interior ", " outer " are base In orientation shown in the drawings or position relationship, description description of the invention and simplified, rather than instruction or hint are for only for ease of Signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this The limitation of invention.
In addition, term " first ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or implying phase To importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " second ", " the 3rd " are defined One or more this feature can be expressed or be implicitly included to feature.
In the description of the invention, unless otherwise clearly defined and limited, term " fixation " should be interpreted broadly, example Such as, can be fixedly connected or be detachably connected, or integrally；Can be mechanical connection or electrical connection； Can be joined directly together, can also be indirectly connected by intermediary, can be two components interiors connection or two parts Interaction relationship.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood in the present invention In concrete meaning.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or it " under " Can directly it be contacted including the first and second features, it is not directly to contact but pass through it that can also include the first and second features Between other characterisation contact.Moreover, fisrt feature second feature it " on " include fisrt feature in second feature just Top and oblique upper, or be merely representative of fisrt feature level height and be higher than second feature.Fisrt feature second feature it " under " Including fisrt feature immediately below second feature and obliquely downward, or it is merely representative of fisrt feature level height and is less than second feature.
As shown in FIG. 3 to 7, embodiments of the invention provide a kind of discontinuous fillet welding method, there is provided treat the first work of fillet welding Part 1 and second workpiece 2, some grooves 3 of machine-shaping are spaced along its length in the welding ends of the first workpiece 1, make the edge of groove 3 The thickness direction of first workpiece 1 runs through the first workpiece 1, then welding ends cornerite is soldered to the surface of second workpiece 2, if being formed The weld seam 4 of annular is done, along the length direction of welding ends, the both ends of weld seam 4 are located in two grooves 3 adjacent thereto respectively.This Invention processes several spaced grooves 3 in the welding ends of the first workpiece 1, and the welding ends cornerite then is welded on into The surface of two workpiece 2, the weld seam 4 of formation is by the side of the first workpiece 1 through the groove 3 around to the opposite side of first workpiece 1, shape The full pack arrangement circularized, the gap between weld seam 4 and two workpiece can be made to be completely sealed in weld seam 4, avoided at this Ponding is formed at gap and is influenceed and corrosion by wet environment；Avoid moisture retention corrosion at the groove 3 simultaneously.
In the present embodiment, cornerite welding is carried out again after fluting, weld heating will not be destroyed when groove 3 is in workshop and coated Priming paint；When the discontinuous cornerite soldering method of the present embodiment is applied to make boat segmental, fluting can mitigate the sky of Ship Structure Canvas, so as to increase cargo dead-weight；And reduce weld length, weld interval and welding material are saved, reduces welding Cost and plate fairing by hot working workload, shorten the construction period of segmentation.
In the present embodiment, the first workpiece 1 and second workpiece 2 are vertical welding, in other embodiments, interruption of the invention Formula fillet welding method is applied to welded corner joint at any angle.
In the present embodiment, the length direction extension of the length of groove 3 along welding ends, and between two neighboring groove 3 away from From equal, so that the bonding strength of the welding ends between the first workpiece 1 and second workpiece 3 is more uniformly distributed, after improving welding Workpiece fatigue resistance.
Specifically, the length of groove 3 is L, length L=75mm~150mm, specific length value according to workpiece size and It is fixed.
The height of first workpiece 1 is H, and the groove depth of groove 3 is h, wherein, groove depth h≤0.25H, and groove depth h≤75mm, the The welded corner joint of one workpiece 1 can be realized smoothly at the surface of second workpiece 2 on the basis of the bonding strength of two workpiece is ensured Cornerite welds, while improves the fatigue resistance of the workpiece after welding.
Preferably, the length L of groove 3 and the groove depth h of groove 3 ratio L/h≤2, with the further work improved after welding The fatigue resistance of part.
In one embodiment of this invention, as shown in Figure 3, Figure 4, first is used between the bottom land 31 and cell wall 32 of groove 3 The transition of circular arc 33, to reduce the stress concentration degree of two workpiece welding ends.
Wherein, the radius of the first circular arc 33 is R1, radius R1 >=25mm, and the central angle of first circular arc 33 is less than or equal to 90°。
In another embodiment of the invention, as shown in Figures 5 to 7, adopted successively between the bottom land 31 and cell wall 32 of groove 3 With anti-S types arc transition, the anti-S types circular arc includes the second circular arc 34 and three-arc 35, and the radius R2 of the second circular arc 34 is big In the radius R3 of three-arc 35, one end of the second circular arc 34 is connected with bottom land 31, and one end of the other end and three-arc 35 connects Connect, the one end of three-arc 35 away from the second circular arc 34 is connected with cell wall 32.Two sections of circular arcs are used between bottom land 31 and cell wall 32 Transition, it can further reduce the stress concentration degree of welding ends.
Specifically, the radius R2 of the second circular arc 34 is 25mm, and central angle is 180 °, and the radius R3 of three-arc 35 is 8mm, Central angle is less than or equal to 90 °.
The height of cell wall 32 is 10~25mm, preferably 15mm.
The present embodiment is ensureing that workpiece is strong with enough antifatigue by being optimized to the structure snd size of groove 3 The stress concentration degree of welding ends is optimized on the basis of degree.
In a specific embodiment of the invention, discontinuous fillet welding method specifically includes following steps：
S10, the intensity according to workpiece and the tired structure and size and the figure for drawing groove 3 for requiring design groove 3 are recessed Ratio L/h≤2 of the transition of circular arc 33, the length L of groove 3 and the groove depth h of groove 3 are used between the cell wall 32 and bottom land 31 of groove 3, And length L=75mm~150mm；Groove depth h≤0.25H, and groove depth h≤75mm；The length L of the groove 3 and groove depth h's of groove 3 Ratio L/h≤2；Arc radius R >=25mm, the height of cell wall 32 is 10~25mm；
S20, structure shear and bending strength and stress concentration value using modeling Analysis groove 3, and adjust The shape and size of groove 3, until the structure shear of groove 3 and bending strength and stress concentration value meet workpiece intensity and Antifatigue requirement；
S30, structural modeling, the structure of acquisition groove 3 are carried out according to the shape and size of groove 3；
S40, according to groove 3 structure workpiece welding ends excision forming groove 3；
S50, the workpiece surface that the welding ends cornerite of workpiece is welded on to another unslotted, after sanding spray painting, complete welding.
The welding ends of the present embodiment workpiece wherein opens up some grooves 3, then using discontinuous cornerite welding side Two workpiece are carried out welded corner joint by method, and weld seam forms a closed annular space, to prevent moisture from entering and corrosion.
The present invention discontinuous cornerite soldering method can apply to ship it is whole on build region, welding material can be saved And cost of labor, shorten the production time, it is contemplated that the construction built on every ship can save more than 50,000 expenses.
It is to be understood that above-mentioned embodiment is only that presently preferred embodiments of the present invention and institute's application technology are former Reason, in technical scope disclosed in this invention, change that any one skilled in the art is readily apparent that or Replace, should all cover within the scope of the present invention.
Above by specific embodiment, the present invention is described, but the present invention is not limited to these specific implementations Example.It will be understood by those skilled in the art that various modifications, equivalent substitution, change etc. can also be made to the present invention.But this A little conversion, all should be within protection scope of the present invention without departing from the spirit of the present invention.In addition, present specification and power Some terms used in sharp claim are not limitation, it is only for are easy to describe.

Claims (10)

  1. A kind of 1. discontinuous fillet welding method, it is characterised in that the first workpiece and second workpiece for treating fillet welding are provided, described first The welding ends of workpiece is spaced some grooves of machine-shaping along its length, makes thickness side of the groove along first workpiece To the surface that the welding ends cornerite through first workpiece, is then soldered to the second workpiece, to form some rings The weld seam of shape.
  2. 2. discontinuous fillet welding method according to claim 1, it is characterised in that the length of the groove is along the welding ends Length direction extension, and the distance between two neighboring described groove is equal.
  3. 3. discontinuous fillet welding method according to claim 1, it is characterised in that the length of the groove is L, the length L=75mm~150mm.
  4. 4. discontinuous fillet welding method according to claim 3, it is characterised in that the height of first workpiece is H, described The groove depth of groove is h, wherein, the groove depth h≤0.25H, and the groove depth h≤75mm.
  5. 5. discontinuous fillet welding method according to claim 4, it is characterised in that the length L of the groove and the groove Groove depth h ratio L/h≤2.
  6. 6. discontinuous fillet welding method according to claim 1, it is characterised in that adopted between the bottom land and cell wall of the groove With the first arc transition.
  7. 7. discontinuous fillet welding method according to claim 6, it is characterised in that the radius of first circular arc is R1, institute State radius R1 >=25mm.
  8. 8. discontinuous fillet welding method according to claim 1, it is characterised in that adopted between the bottom land and cell wall of the groove With anti-S types arc transition, the anti-S types circular arc includes the second circular arc and three-arc, and the radius R2 of second circular arc is more than The radius R3 of the three-arc, one end of second circular arc are connected with the bottom land, the other end and the three-arc One end is connected, and the one end of the three-arc away from second circular arc is connected with the cell wall.
  9. 9. the discontinuous fillet welding method according to any one of claim 6 to 8, it is characterised in that the height of the cell wall is 10~25mm.
  10. 10. the discontinuous fillet welding method according to any one of claim 1 to 8, it is characterised in that comprise the following steps：
    S10, the intensity according to workpiece and the tired structure and size and the figure for drawing the groove for requiring to design the groove, Arc transition, the length L of the groove and groove depth h of groove ratio L/ are used between the cell wall and bottom land of the groove H≤2, and the length L=75mm~150mm；Groove depth h≤the 0.25H, and the groove depth h≤75mm；The length of the groove Spend L and the groove depth h of the groove ratio L/h≤2；Arc radius R >=the 25mm, the height of the cell wall for 10~ 25mm；
    S20, using the shearing of groove structure described in modeling Analysis and bending strength and stress concentration value, and adjust institute The shape and size of groove are stated, until the shearing of the groove structure and bending strength and stress concentration value meet the workpiece Intensity requirement；
    S30, according to the shape and size of the groove structural modeling is carried out, obtain the structure of the groove；
    S40, according to groove described in welding ends excision forming of the structure of the groove in the workpiece；
    S50, the workpiece surface that the welding ends cornerite of the workpiece is welded on to another unslotted, after sanding spray painting, complete welding.
CN201710755815.4A 2017-08-29 2017-08-29 Intermittent fillet welding method Active CN107414331B (en)

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PCT/CN2017/105974 WO2019041458A1 (en) 2017-08-29 2017-10-13 Intermittent fillet welding method

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CN107584230A (en) * 2017-12-14 2018-01-16 徐州徐工矿山机械有限公司 A kind of welding connection structure for preventing bead crack from extending
CN109926743A (en) * 2019-04-01 2019-06-25 山东电力设备有限公司 The welding method and welding structure of antiseep weld seam
CN110722252A (en) * 2019-09-11 2020-01-24 沪东中华造船(集团)有限公司 Method for assembling and positioning composite joint and aluminum alloy light enclosure wall
CN111761168A (en) * 2020-06-15 2020-10-13 中国舰船研究设计中心 Steel-aluminum composite joint connection method for ships
CN112207395A (en) * 2019-07-10 2021-01-12 河南森源重工有限公司 Welding method of transformer oil tank
CN112296480A (en) * 2020-10-23 2021-02-02 中船黄埔文冲船舶有限公司 Welding robot and welding process method for sheet structural member

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CN112222660A (en) * 2020-10-13 2021-01-15 扬州鑫源钣焊机械有限公司 Intermittent welding method for metal plate

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Publication number Priority date Publication date Assignee Title
CN107584230A (en) * 2017-12-14 2018-01-16 徐州徐工矿山机械有限公司 A kind of welding connection structure for preventing bead crack from extending
CN109926743A (en) * 2019-04-01 2019-06-25 山东电力设备有限公司 The welding method and welding structure of antiseep weld seam
CN112207395A (en) * 2019-07-10 2021-01-12 河南森源重工有限公司 Welding method of transformer oil tank
CN110722252A (en) * 2019-09-11 2020-01-24 沪东中华造船(集团)有限公司 Method for assembling and positioning composite joint and aluminum alloy light enclosure wall
CN110722252B (en) * 2019-09-11 2021-09-17 沪东中华造船(集团)有限公司 Method for assembling and positioning composite joint and aluminum alloy light enclosure wall
CN111761168A (en) * 2020-06-15 2020-10-13 中国舰船研究设计中心 Steel-aluminum composite joint connection method for ships
CN112296480A (en) * 2020-10-23 2021-02-02 中船黄埔文冲船舶有限公司 Welding robot and welding process method for sheet structural member

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