CN205085526U - Barrel welding groove - Google Patents
Barrel welding groove Download PDFInfo
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- CN205085526U CN205085526U CN201520895036.0U CN201520895036U CN205085526U CN 205085526 U CN205085526 U CN 205085526U CN 201520895036 U CN201520895036 U CN 201520895036U CN 205085526 U CN205085526 U CN 205085526U
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Abstract
The utility model discloses a barrel welding groove for the panel of welding barrel, its characterized in that, this groove include inside groove and outside groove, and inside groove and outside groove are connected, and inside groove is the type of falling a V groove, and outside groove is a U type groove. The utility model discloses a barrel welding groove is applicable to a barrel welding process, has solved that barrel low -alloy high -strength steel thick plate welding inefficiency, root need artifical carbon to dig back chipping, the big scheduling problem of welding seam metal loading among the prior art. Make welding efficiency production efficiency improve 2-3 times than the tradition welding, practice thrift and weld material 10%-20%, do not need carbon to dig the back chipping, reduce artifical about 50%.
Description
Technical field
The utility model relates to welding procedure, more particularly, relates to a kind of welding divided edge structure of high strength steel slab.
Background technology
Sea frock uses the steel of low-alloy high-strength in a large number for middle meeting, the steel part that these steel are formed needs to weld.For Hi-Stren steel material, the steel that especially thickness of slab is larger, the difficulty of welding is higher.
Offshore wind farm system be extra large frock standby in staple product.Wind-power electricity generation pile tube is the important component part of wind power system.Offshore wind farm pile tube cylinder material is generally S355 level low alloy high-strength steel, thickness of slab 40 ~ 100mm, and its welding point General Requirements reaches higher low-temperature impact toughness and CTOD value.In traditional mode of production, the longitudinal seam welding of cylindrical shell ring adopts manual electric arc welding bottoming, and capping is filled in monofilament submerged-arc welding, and multi-pass welding, welding job amount is large, efficiency is low.Design and construction adopt the large groove type of Asymmetric two-sided V-type, weld preheating, first welds inner groove, weld after outside artificial's carbon arc air gouging back chipping, channeling, polishing, again preheating.Time-consuming, and labor strength is large, and production environment is severe, and welding quality is difficult to ensure.
Utility model content
The utility model is intended to the barrel soldering technique and the divided edge structure that propose a kind of cylindrical shell for high-strength plank manufacture.
According to an embodiment of the present utility model, propose a kind of barrel soldering groove, for welding the sheet material of cylindrical shell, this groove comprises inner groove and outside groove, and inner groove is connected with outside groove, and inner groove is reverse V-shaped groove, and outside groove is U-shaped groove.
In one embodiment, the opening angle α of inner groove is 50 °-70 °.
In one embodiment, the opening angle β of outside groove is 13 °-18 °.
In one embodiment, the thickness T of sheet material is 40-100mm, the working depth T1 of inner groove is 15-25mm, the working depth T2=T-T1+X of described outside groove, wherein T be sheet metal thickness, the T1 working depth that is inner groove, the X degree of depth that is the lap of outside groove and inner groove, X is 4-6mm.
In one embodiment, the welding of inner groove and outside groove uses two electric three fibril welding sets, this pair of electricity three fibril welding set bag two power supplys and three root wires, wherein preposition welding wire is connected with dc source, dc source is straight polarity direct current, rearmounted welding wire is two, and two rearmounted welding wires are connected with AC arc welding power source.
This groove is applicable to a kind of barrel soldering technique, comprising:
Inner retaining wall on slope step, process and assemble forms inner groove, and inner groove is reverse V-shaped groove;
Inner groove welding step, welds inner groove, uses three submerged-arc weldings of two electricity when welding inner groove;
Outside retaining wall on slope and inner groove machinery back chipping step, back chipping is disposable completes for outside retaining wall on slope and inner groove machinery, and described outside groove is U-shaped groove;
Outside groove welding step, welds outside groove, uses three submerged-arc weldings of two electricity when welding outside groove.
In one embodiment, two electric three submerged-arc weldings use two electric three fibril welding sets, this pair of electricity three fibril welding set bag two power supplys and three root wires, wherein preposition welding wire is connected with dc source, dc source is straight polarity direct current, rearmounted welding wire is two, and two rearmounted welding wires are connected with AC arc welding power source.
In one embodiment, the thickness T of sheet material is 40-100mm.
In one embodiment, inner retaining wall on slope step comprises:
The sheet material of both sides is processed to form inclined-plane;
The sheet material of assembling both sides forms reverse V-shaped inside groove;
Clear up inner groove and carry out preheating.
In one embodiment, the opening angle α of inner groove is 50 °-70 °, and the working depth T1 of inner groove is 15-25mm.
In one embodiment, inner groove welding step comprises:
Backing welding, adopts single crin submerged-arc welding;
Fill weldering, adopt three submerged-arc weldings of two electricity, fill weldering every layer weldering twice;
Cosmetic welding, adopts three submerged-arc weldings of two electricity, cosmetic welding every Ceng Han tri-road.
In one embodiment, the welding condition of backing welding is as follows: gage of wire 4.0mm, stem elongation 30mm, welding current are straight polarity direct current (DCEP) 450-510A, weldingvoltage 27-29V, speed of welding is 400-450mm/min;
The welding parameter of filling weldering is as follows: preposition gage of wire 4.0mm, stem elongation 30mm, welding current are straight polarity direct current (DCEP) 500-550A, weldingvoltage 28-31V, speed of welding is 600-650mm/min; The diameter of rearmounted welding wire two is 2.4mm, stem elongation 30mm, welding current is interchange (AC) 560-600A, weldingvoltage 32-36V, speed of welding is 600-650mm/min;
The welding parameter of cosmetic welding is as follows: preposition gage of wire 4.0mm, stem elongation 30mm, welding current are straight polarity direct current (DCEP) 500-550A, weldingvoltage 28-31V, speed of welding is 630-660mm/min; The diameter of rearmounted welding wire two is 2.4mm, stem elongation 30mm, welding current is interchange (AC) 560-600A, weldingvoltage 32-36V, speed of welding is 630-660mm/min.
In one embodiment, outside groove is U-shaped groove, opening angle β is 13 °-18 °, the root of U-shaped groove is fillet, the radius of fillet is 6-10mm, the working depth T2=T-T1+X of outside groove, wherein T be sheet metal thickness, the T1 working depth that is inner groove, the X degree of depth that is the lap of outside groove and inner groove, X is 4-6mm.
In one embodiment, outside groove welding step comprises:
Backing welding, adopts single crin submerged-arc welding;
Fill weldering, adopt three submerged-arc weldings of two electricity, fill weldering every layer weldering twice;
Cosmetic welding, adopts three submerged-arc weldings of two electricity, cosmetic welding every Ceng Han tri-road.
In one embodiment, the welding condition of backing welding is as follows: gage of wire 4.0mm, stem elongation 30mm, welding current are straight polarity direct current (DCEP) 450-510A, weldingvoltage 27-29V, speed of welding is 400-450mm/min;
The welding parameter of filling weldering is as follows: preposition gage of wire 4.0mm, stem elongation 30mm, welding current are straight polarity direct current (DCEP) 500-550A, weldingvoltage 28-31V, speed of welding is 600-650mm/min; The diameter of rearmounted welding wire two is 2.4mm, stem elongation 30mm, welding current is interchange (AC) 560-600A, weldingvoltage 32-36V, speed of welding is 600-650mm/min;
The welding parameter of cosmetic welding is as follows: preposition gage of wire 4.0mm, stem elongation 30mm, welding current are straight polarity direct current (DCEP) 500-550A, weldingvoltage 28-31V, speed of welding is 630-660mm/min; The diameter of rearmounted welding wire two is 2.4mm, stem elongation 30mm, welding current is interchange (AC) 560-600A, weldingvoltage 32-36V, speed of welding is 630-660mm/min.
Barrel soldering technique of the present utility model and bevel for welding, solve the problems such as prior art middle cylinder body low-alloy high-strength steel thick plates efficiency is low, root need artificial carbon plane back chipping, weld metal loading are large.Make welding efficiency production efficiency improve 2 ~ 3 times than traditional welding, save wlding 10% ~ 20%, do not need carbon to dig back chipping, reduce artificial about 50%.
Accompanying drawing explanation
The above and other feature of the utility model, character and advantage are by more obvious by what become below in conjunction with the description of drawings and Examples, and Reference numeral identical in the accompanying drawings represents identical feature all the time, wherein:
Fig. 1 discloses the schematic diagram of the divided edge structure be processed to form in the barrel soldering technique according to an embodiment of the present utility model.
Fig. 2 discloses the schematic diagram carrying out inner retaining wall on slope step in the barrel soldering technique according to an embodiment of the present utility model.
Fig. 3 discloses in the barrel soldering technique according to an embodiment of the present utility model the schematic diagram carrying out inner groove welding step and outside retaining wall on slope and inner groove machinery back chipping step.
Fig. 4 discloses the schematic diagram carrying out outside groove welding in the barrel soldering technique according to an embodiment of the present utility model.
Fig. 5 discloses in the barrel soldering technique according to an embodiment of the present utility model the structural representation of two electric three fibril welding sets used.
Fig. 6 a and Fig. 6 b discloses the contrast of the various parameters of the barrel soldering technique adopting barrel soldering technique of the present utility model and prior art.
Detailed description of the invention
First with reference to shown in figure 1, Fig. 1 discloses the schematic diagram of the divided edge structure be processed to form in the barrel soldering technique according to an embodiment of the present utility model.As shown in Figure 1, groove is the U-shaped groove in narrow gap, and groove roughly can be divided into two parts: outside groove and inner groove.Outside groove and Fig. 1 split shed part upwards, outside groove is that a sidewall tilts slightly, the U-shaped groove that opening is opened, and the root of outside groove is fillet.Reverse V-shaped groove in inner groove and Fig. 1.After inner groove and the whole machine-shaping of outside groove, the root of inner groove is overlapping with outside groove, and therefore inner groove is not complete reverse V-shaped, but tip portion disappearance is reverse V-shaped.Inner groove connects with outside groove.
Continue with reference to shown in figure 1, in Fig. 1 the implication that is expressed as follows respectively of alphabetic flag:
T represents the thickness of cylindrical shell sheet material.In one embodiment, sheet metal thickness T is 40-100mm.
α is expressed as the angle of inner groove.In one embodiment, the span of the angle [alpha] of inner groove is 50 °-70 °, and such as, α is 60 °.
T1 is expressed as the inner retaining wall on slope degree of depth, be inner groove (with reference to shown in figure 2) in process formed complete reverse V-shaped time reverse V-shaped top to the distance of sheet edge.In one embodiment, T1 is 15-25mm.
R represents the radius of outside groove root fillet.In one embodiment, the radius of root fillet is 6-10mm, and such as, the radius R of root fillet is 8mm.
T2 is for representing the outside retaining wall on slope degree of depth, the i.e. degree of depth of mechanical back chipping.In order to reach back chipping object, the outside root of groove and the top of inner groove overlap, therefore the working depth T2 of outside groove is calculated as follows: (T-T1+X) mm, and so outside groove and inner groove have the overlap of Xmm, and the value of usual X is at 4-6mm.
β represents the angle of outside groove.In one embodiment, the value of the angle beta of outside groove is 13 °-18 °, and such as β is 16 °.
Inner groove makes formation in advance, and after welding inner groove, the processing of outside groove and completing for the mechanical back chipping of inner groove is disposable, then forms the equitant form of outside groove root and inner groove top.Again outside groove is welded.
An instantiation process of barrel soldering technique of the present utility model is as follows:
Be 70mm to thickness of slab T, material is that the cylindrical shell sheet material of the high strength steel of S355NL welds.It should be noted that, this barrel soldering technique goes for thickness of slab 40-100mm, the cylindrical shell sheet material of other high strength steels of S355 grade.
Inner retaining wall on slope step.Fig. 2 discloses the schematic diagram carrying out inner retaining wall on slope step in the barrel soldering technique according to an embodiment of the present utility model.As shown in Figure 2, when carrying out inner retaining wall on slope, the sheet material of both sides processes an inclined-plane respectively, after the sheet material assembling of both sides, formation one is reverse V-shaped, i.e. inner groove.In the process of the inside groove shown in Fig. 2, inner groove is complete reverse V-shaped.In the embodiment shown in Figure 2, thickness of slab T is 70mm, and inner retaining wall on slope degree of depth T1 is 20mm, and the angle [alpha] of inner groove is 60 °.Bevel angle on the sheet material of both sides is 60 °, and after assembling splicing, angulation is the inside groove of 60 °.When the sheet material of both sides assembles, root does not stay gap, and the planar section laminating that namely sheet material of both sides is positioned at above inclined-plane does not stay gap.After completing assembling, iron rust, greasy dirt etc. within the scope of removal groove and around 20mm.In one embodiment, inner retaining wall on slope step also comprises preheating step, sheet material is preheated to 130 DEG C-160 DEG C.
Inner groove welding step.Fig. 3 discloses the schematic diagram carrying out inner groove welding step and exterior mechanical back chipping step in the barrel soldering technique according to an embodiment of the present utility model.The welding machine step of inner groove is with reference to the inside groove part in figure 3.Grey parts in Fig. 3 in inner groove represents the wlding of filling inner groove.The welding step of inner groove comprises three welding step:
First be backing welding, adopt single crin submerged-arc welding.Welding condition is as follows: gage of wire 4.0mm, stem elongation 30mm, welding current are straight polarity direct current (DCEP) 450-510A, weldingvoltage 27-29V, speed of welding is 400-450mm/min.
Then be fill weldering, adopt three submerged-arc weldings of two electricity.Fig. 5 discloses in the barrel soldering technique according to an embodiment of the present utility model the structural representation of two electric three fibril welding sets used.As shown in Figure 5, three submerged-arc weldings of this pair of electricity comprise two power supplys and three root wires.Wherein preposition welding wire 501 is connected with dc source 502, and dc source 502 is straight polarity direct current, and namely the direction of the positive best negative pole of power supply is along welding direction.Rearmounted welding wire 503 is two, and two rearmounted welding wires 503 are connected with AC arc welding power source 504.The welding parameter of filling weldering is as follows:
Preposition gage of wire 4.0mm, stem elongation 30mm, welding current are straight polarity direct current (DCEP) 500-550A, weldingvoltage 28-31V, speed of welding is 600-650mm/min.
The diameter of rearmounted welding wire two is 2.4mm, stem elongation 30mm, welding current is interchange (AC) 560-600A, weldingvoltage 32-36V, speed of welding is 600-650mm/min.
Finally carry out cosmetic welding, three submerged-arc weldings of the two electricity of same employing.Use two electric three fibril welding sets shown in Fig. 5, but welding parameter is different, the welding parameter of cosmetic welding is as follows:
Preposition gage of wire 4.0mm, stem elongation 30mm, welding current are straight polarity direct current (DCEP) 500-550A, weldingvoltage 28-31V, speed of welding is 630-660mm/min.
The diameter of rearmounted welding wire two is 2.4mm, stem elongation 30mm, welding current is interchange (AC) 560-600A, weldingvoltage 32-36V, speed of welding is 630-660mm/min.
Fill weldering every layer weldering twice, cosmetic welding every Ceng Han tri-road.Strictly in welding process control between road and interlayer temperature and preheat temperature are consistent, scarfing cinder after per pass is soldered also is polished.The slow cooling of postwelding asbestos parcel is to prevent the generation of cold crack.
Outside retaining wall on slope and inner groove machinery back chipping step.Fig. 3 discloses the schematic diagram carrying out inner groove welding step and exterior mechanical back chipping step in the barrel soldering technique according to an embodiment of the present utility model.Outside retaining wall on slope and inner groove machinery back chipping step are with reference to the outside groove part in figure 3.In the embodiment shown in fig. 3, outside retaining wall on slope and inner groove machinery back chipping are disposable completing.When carrying out outside retaining wall on slope, the root of outside groove and the root of inner groove overlap, and therefore just can complete the back chipping of inner groove when carrying out outside retaining wall on slope simultaneously.Continue with reference to the embodiment shown in figure 3, employing back chipping carries out outside retaining wall on slope and inner groove back chipping, outside groove to be opening β the be U-shaped groove of 16 °.The sidewall flare slightly of U-shaped groove.Root is fillet, and radius of corner R is 8mm.Back chipping degree of depth T2 is 55mm.T2=T-T1+5, T=70mm, T1=20mm, calculate T2=55mm.Namely the part of outside groove and inner groove root overlap is 5mm.
Outside groove welding step.Fig. 4 discloses the schematic diagram carrying out outside groove welding in the barrel soldering technique according to an embodiment of the present utility model.Grey parts in Fig. 4 peripheral groove and inner groove represents the wlding of filling outside groove and inner groove.Before outside groove welding step starts, after back chipping step, first butt welded seam carries out cleaning and preheating again, is preheated to 130 DEG C-160 DEG C.Then carry out the welding of outside groove, similar with the welding step of inner groove, the welding step of outside groove comprises three welding step equally:
First be backing welding, adopt single crin submerged-arc welding.Welding condition is as follows: gage of wire 4.0mm, stem elongation 30mm, welding current are straight polarity direct current (DCEP) 450-510A, weldingvoltage 27-29V, speed of welding is 400-450mm/min.
Then be fill weldering, adopt three submerged-arc weldings of two electricity, fill weldering weldering twice.Fig. 5 discloses in the barrel soldering technique according to an embodiment of the present utility model the structural representation of two electric three fibril welding sets used.As shown in Figure 5, three submerged-arc weldings of this pair of electricity comprise two power supplys and three root wires.Wherein preposition welding wire 501 is connected with dc source 502, and dc source 502 is straight polarity direct current, and namely the direction of the positive best negative pole of power supply is along welding direction.Rearmounted welding wire 503 is two, and two rearmounted welding wires 503 are connected with AC arc welding power source 504.The welding parameter of filling weldering is as follows:
Preposition gage of wire 4.0mm, stem elongation 30mm, welding current are straight polarity direct current (DCEP) 500-550A, weldingvoltage 28-31V, speed of welding is 600-650mm/min.
The diameter of rearmounted welding wire two is 2.4mm, stem elongation 30mm, welding current is interchange (AC) 560-600A, weldingvoltage 32-36V, speed of welding is 600-650mm/min.
Be finally carry out cosmetic welding, three submerged-arc weldings of the two electricity of same employing, cosmetic welding welds three roads.Use two electric three fibril welding sets shown in Fig. 5, but welding parameter is different, the welding parameter of cosmetic welding is as follows:
Preposition gage of wire 4.0mm, stem elongation 30mm, welding current are straight polarity direct current (DCEP) 500-550A, weldingvoltage 28-31V, speed of welding is 630-660mm/min.
The diameter of rearmounted welding wire two is 2.4mm, stem elongation 30mm, welding current is interchange (AC) 560-600A, weldingvoltage 32-36V, speed of welding is 630-660mm/min.
Fill weldering every layer weldering twice, cosmetic welding every Ceng Han tri-road.Strictly in welding process control between road and interlayer temperature and preheat temperature are consistent, scarfing cinder after per pass is soldered also is polished.The slow cooling of postwelding asbestos parcel is to prevent the generation of cold crack.
Fig. 6 a and Fig. 6 b discloses the contrast of the various parameters of the barrel soldering technique adopting barrel soldering technique of the present utility model and prior art.Wherein Fig. 6 a adopts the groove offered required for the barrel soldering technique of prior art, and Fig. 6 b is the groove offered according to barrel soldering technique of the present utility model.
As shown in Figure 6 a, the large groove of two-sided V-type offered of barrel soldering technique conventionally.For the sheet material of thickness of slab T=70mm, the opening angle of the double V-groove of both sides is 60 °.Inner side groove depth 23mm, inner groove section amasss 305mm
2, outside groove depth 47mm, outside groove section amasss 1275mm
2.Total groove section amasss as 1580mm
2, welded section is amassed as 1896mm
2, welding number of channels is 20 layers of 52-55 road altogether.Average speed of welding 470mm/min.Root adopts carbon arc air gouging and technique for grinding to process.Fusion length is about 3m.Welding procedure always about 5.85 hours consuming time, welding wire consumption is about 44.7kg.
As shown in Figure 6 b, according to the U-shaped groove that barrel soldering technique of the present utility model is offered.For the sheet material of thickness of slab T=70mm, inner groove is double V-groove, and opening angle is 60 °.Inner side groove depth 20mm, inner groove section amasss 231mm
2.Outside groove is U-shaped groove, and outside groove depth 55mm, the opening angle of outside groove is 16 °.Outside groove section amasss 1163mm
2.Total groove section amasss as 1394mm
2, welded section is amassed as 1762mm
2, welding number of channels is 14 layers of 26-28 road altogether.Average speed of welding 650mm/min.Root machinery back chipping processes.Fusion length is about 3m.Welding procedure always about 2.15 hours consuming time, welding wire consumption is about 39.3kg.
Detection after welding shows, the weld seam monolithic molding adopting barrel soldering technique of the present utility model to be formed is attractive in appearance, and welding bead is filled evenly, pore-free, slag inclusion, and sidewall fusion is good, heat affected area less (it is 2-3mm that test records heat affected area width).During weld seam-10 DEG C, CTOD value is greater than 0.25mm, and-60 DEG C of low-temperature impact toughness reach more than 50J, meet instructions for use.
Barrel soldering technique of the present utility model, solves the problems such as prior art middle cylinder body low-alloy high-strength steel thick plates efficiency is low, root need artificial carbon plane back chipping, weld metal loading are large.Make welding efficiency production efficiency improve 2 ~ 3 times than traditional welding, save wlding 10% ~ 20%, do not need carbon to dig back chipping, reduce artificial about 50%.
Above-described embodiment is available to be familiar with person in the art to realize or to use of the present utility model; those skilled in the art can when not departing from utility model thought of the present utility model; various modifications or change are made to above-described embodiment; thus protection domain of the present utility model not limit by above-described embodiment, and should be the maximum magnitude meeting the inventive features that claims are mentioned.
Claims (5)
1. a barrel soldering groove, for welding the sheet material of cylindrical shell, is characterized in that, this groove comprises inner groove and outside groove, and inner groove is connected with outside groove, and inner groove is reverse V-shaped groove, and outside groove is U-shaped groove.
2. barrel soldering groove as claimed in claim 1, it is characterized in that, the opening angle α of described inner groove is 50 °-70 °.
3. barrel soldering groove as claimed in claim 1, it is characterized in that, the opening angle β of described outside groove is 13 °-18 °.
4. barrel soldering groove as claimed in claim 1, it is characterized in that, the thickness T of described sheet material is 40-100mm, the working depth T1 of described inner groove is 15-25mm, the working depth T2=T-T1+X of described outside groove, wherein T be sheet metal thickness, the T1 working depth that is inner groove, the X degree of depth that is the lap of outside groove and inner groove, X is 4-6mm.
5. barrel soldering groove as claimed in claim 1, it is characterized in that, the welding of inner groove and outside groove uses two electric three fibril welding sets, this pair of electricity three fibril welding set bag two power supplys and three root wires, wherein preposition welding wire is connected with dc source, dc source is straight polarity direct current, and rearmounted welding wire is two, and two rearmounted welding wires are connected with AC arc welding power source.
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| CN201520895036.0U CN205085526U (en) | 2015-11-11 | 2015-11-11 | Barrel welding groove |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113600971A (en) * | 2021-08-09 | 2021-11-05 | 哈尔滨红光锅炉总厂有限责任公司 | Girth welding process for header and pipeline with thick wall on power station boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113600971A (en) * | 2021-08-09 | 2021-11-05 | 哈尔滨红光锅炉总厂有限责任公司 | Girth welding process for header and pipeline with thick wall on power station boiler |
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