CN104384733A - Welding deformation control process used for manufacturing plug type hoisting platform pile leg - Google Patents
Welding deformation control process used for manufacturing plug type hoisting platform pile leg Download PDFInfo
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- CN104384733A CN104384733A CN201410566556.7A CN201410566556A CN104384733A CN 104384733 A CN104384733 A CN 104384733A CN 201410566556 A CN201410566556 A CN 201410566556A CN 104384733 A CN104384733 A CN 104384733A
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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
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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
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Abstract
The invention provides a welding deformation control process used for manufacturing a plug type hoisting platform pile leg. The welding deformation control process sequentially comprises the following four steps: assembling a part; welding long vertical ribs, annular ribs and separation plates; forming plug holes; assembling and welding a flitch plate. The whole process is carried out according to the sequence of assembling and then welding; in an assembling process, an annular support and supporting profile steel are additionally arranged so that the structure rigidity of the whole body of an outer barrel is increased, and furthermore, the deformation caused by welding is overcome; in a welding process, the annular ribs and the long vertical ribs are sequentially welded; the welding deformation is controlled by adopting a welding sequence of carrying out symmetrical welding from the middle part to the two ends, and crossed separated symmetrical welding and the like. According to the design, deformation by the welding is not easily generated, and the whole size precision is high.
Description
Technical field
The present invention relates to a kind of hydraulic bolt formula hoistable platform, particularly relate to a kind of weld industry technique made for bolt-type hoistable platform spud leg, be specifically applicable to control welding indeformable, guarantee overall dimensions high accuracy.
Background technology
Hydraulic bolt formula hoistable platform is the one of self-elevating ocean platform, and it is mainly used in greater coasting area, and applicable main ship type has the ship types such as wind turbine installation vessel, offshore drilling ship and lifting barge.The primary structure of hydraulic bolt formula hoistable platform is divided into the part such as wedge bracket, spud leg, shoe, platform, and wherein spud leg is important load and the Force transmission parts of this platform, and the maximum load of single spud leg is 450 tons.The outer cylinder body of spud leg passes from the hole wedge bracket, platform, and to be contacted with the pin hole on spud leg by latch and pass on spud leg by the weight of bearing of whole equipment, as shown in Figure 1, the existing making of spud leg exists following problem:
The overall dimensional accuracy of spud leg requires higher: the dimensional accuracy of the ovality of spud leg component, linearity and pin hole directly affects smooth and easy, stationarity in whole lifting of ocean platform process, so its linearity requires higher than 1/2000, ovality is less than 5mm, pin hole position deviation 2mm;
The easy welding deformation of spud leg: spud leg single-unit length is about 17m, diameter 1.5m, diameter is less than 1/10 with length ratio, and belong to elongate rod structure, it easily produces flexural deformation in welding process; Meanwhile, because spud leg is important primary structure member, for ensureing its intensity, there are more ring muscle, vertical muscle in the outer cylinder body inside of spud leg, and to have four length along its length to indulge muscle be penetration seam, its welding capacity is comparatively large, further increases the difficulty controlling welding deformation.
The problems referred to above add the manufacture difficulty of spud leg, and the welding sequence followed conventional lines is difficult to the linearity and the ovality that ensure spud leg, and spud leg welding deformation is once be formed, component is difficult to correct, even can cause scrapping of component, increase the risk of product, affect the manufacturing cycle of product.
China, application publication number is CN103722295A, Shen Qing Publication day is that the application for a patent for invention on April 16th, 2014 discloses a kind of anti-deforming welding method for drilling platform leg, comprise: first first by complete for pipe location in horizontal outer tube, level, then, the horizontal outer tube simultaneously welding odd-level welds the horizontal outer tube of even level more simultaneously, manages in the level of simultaneously welding odd-level after having been welded by all horizontal outer tubes again, pipe in the level of simultaneously welding even level afterwards; Second first by complete for the first bearing diagonal location of every spud leg three, then weld the lower end weld seam of all first bearing diagonals simultaneously, again the upper end tack weld plane of all first bearing diagonals is fallen or polish off to carry out Stress Release, after then reorientating, the upper end weld seam of all first bearing diagonals is welded complete simultaneously; 3rd first by complete for the second bearing diagonal location of every spud leg three, then weld the lower end weld seam of all second bearing diagonals simultaneously, again the upper end tack weld plane of all second bearing diagonals is fallen or polishes off to carry out Stress Release, then, after reorientating, the upper end weld seam of all second bearing diagonals is welded complete simultaneously.Although this invention reduces deformation extent when spud leg is always organized by modes such as design welding sequence, releasing tack welding release stress, but its for be the spud leg of Yan shelf structure, and non-invention for cartridge type bolt-type spud leg, thus it is guaranteed overall dimensions high accuracy for being difficult to of existing in prior art, welding yielding defect, still can not overcome, the requirement of controlling distortion during welding can not be met.
Summary of the invention
The object of the invention is to overcome the welding existed in prior art yielding, be difficult to guarantee overall dimensions defective and problem, provide a kind of welding not yielding, the high-precision weld industry technique made for bolt-type hoistable platform spud leg of overall dimensions can be guaranteed.
For realizing above object, technical solution of the present invention is: the weld industry technique made for bolt-type hoistable platform spud leg, and described spud leg comprises outer cylinder body, pasting board, ring muscle, long vertical muscle and pin hole, the inside of described outer cylinder body is provided with long vertical muscle, ring muscle, latch box, the quantity that described length indulges muscle is four, long vertical muscle each other with the central shaft of outer cylinder body for symmetry axis is symmetrical arranged, every two long vertical muscle are one group, multiple latch box is connected with between the inwall of two often in group long vertical muscle, the outer wall of two often in group long vertical muscle is connected to pressed on ring muscle, lower ring muscle is to form a whole ring muscle, described ring muscle is arranged along the distribution sequence interval of latch box, latch box comprises two dividing plates and a base plate, the through pin hole one_to_one corresponding offered on the sidewall of latch box and outer cylinder body, the outer wall of outer cylinder body is connected with pasting board, pasting board offers and pin hole external socket one to one, described weld industry technique comprises the following steps:
The first step: the assembling of parts: first blanking is also round as a ball to make outer cylinder body with rolling bed, the rigging position line of long vertical muscle, ring muscle, latch box is marked again on the inwall of outer cylinder body, then dividing plate, the ring muscle in long vertical muscle, latch box is assembled successively according to rigging position line, the rigging position line place of the latch box again between adjacent ring muscle installs annular brace additional, and structure, the matching requirements of annular brace are consistent with ring muscle; After assembling, long vertical muscle, ring muscle, dividing plate, annular brace all adopt tack welding to be fixed;
Second step: the welding of long vertical muscle, ring muscle, dividing plate: first determine whether above-mentioned assembling completes, determine errorless after, angle welding again between welding ring muscle and outer cylinder body, welding sequence is for be symmetrically welded to two ends by centre, then the long vertical inside weld between muscle and outer cylinder body of welding, back root cleaning is carried out after inside weld has welded, the long vertical outside weld between muscle and outer cylinder body of welding subsequently, last welding diaphragm and outer cylinder body, the long weld seam indulged between muscle, welding sequence is for be symmetrically welded to two ends by centre;
3rd step: offering of pin hole: the cross searching first determining each pin hole on the outer wall of outer cylinder body, then undertaken cutting to offer pin hole by the cross searching determined;
4th step: the assembling of pasting board with weld: first assemble pasting board in the side of outer cylinder body, require that the external socket on pasting board is alignd with the pin hole that outer cylinder body sidewall is offered, again pasting board tack welding is fixed, and assemble the base plate of latch box, then pasting board is assembled at the opposite side of outer cylinder body according to same requirement, base plate, after having assembled, weld pasting board again, inside weld between outer cylinder body, the nearly external socket of this inside weld is arranged, then pasting board is welded, outside weld between outer cylinder body, this outside weld distributes along the central axis direction of outer cylinder body, finally weld base plate and dividing plate, weld seam between long vertical muscle, after above-mentioned weld seam all welds, take off annular brace and can complete described weld industry technique.
Described weld industry technique is also provided with nondestructive flaw detection examination step after above-mentioned 4th step; Described nondestructive flaw detection examination refers to: long vertical weld seam between muscle and outer cylinder body is carried out to the ultrasonic examination of 100%, meet JB/T4730 – 2005II level qualified, meanwhile, carry out kerosene lysimetric test to the weld seam around pin hole.
In described second step, in the welding sequence of long vertical inside and outside weld seam between muscle and outer cylinder body and the 4th step, between pasting board and outer cylinder body, the welding sequence of outside weld is all that transpostion interval is symmetrically welded, and specifically refers to:
The outside weld thing of bar shaped and the equal horizontal positioned of welded article of bar shaped, there is upper side weld between the two, lower side weld two welding regions, upper side weld, lower side weld is all according to 13, 25, 11, 23, 9, 21, 7, 19, 5, 17, 3, 15, 1, 14, 2, 16, 4, 18, 6, 20, 8, 22, 10, 24, 12, the number order of 26 arranges pad, during welding, first weld the 1st – No. 13 pads in lower side weld successively, again by outside weld thing, welded article rotates the 1st – No. 13 pads welding successively after 180 ° and go up in side weld, then the 14th – No. 26 pads in upper side weld are welded successively, again by outside weld thing, the 14th – No. 26 pads under welded article rotates and welds successively after 180 ° in side weld, so far, all pads all weld complete.
In the described first step, the thickness of slab of described annular brace is 20mm, and its tack welding length is 40mm.
In described 3rd step, need to install support shaped steel additional between the cross searching determining each pin hole, its installation steps are: first divided into groups between two along the radial direction of outer cylinder body by the rigging position line of latch box, again the dividing plate of two latch boxes in every group is fixedly connected with by supporting shaped steel, one supports corresponding two dividing plates of shaped steel, corresponding two the support shaped steel be parallel to each other of one group of latch box, the diameter of this support shaped steel and outer cylinder body cross section coincides and perpendicular with the central shaft of outer cylinder body;
In described 4th step, after weld seam all welds, take off annular brace, support shaped steel can complete described weld industry technique.
In described 4th step, between pasting board, outer cylinder body, the welding requirements of inside weld is: be symmetrically welded to two ends by centre, requires the groove of pasting board side to fill up, and keep mutually concordant with pin hole on external socket, outer cylinder body on pasting board during welding.
In described 4th step, if the every side of outer cylinder body connect pasting board when being made up of the sub-pasting board of polylith, after completing the welding between pasting board, outer cylinder body, need first to weld the attachment weld between sub-pasting board, welding sequence is that outer cylinder body bilateral symmetry is welded, after welding, then weld base plate and dividing plate, the long weld seam indulged between muscle.
Compared with prior art, beneficial effect of the present invention is:
1, the present invention comprises the assembling of parts successively for the weld industry technique that bolt-type hoistable platform spud leg makes---long vertical muscle, ring muscle, the assembling of the welding of dividing plate---offering of pin hole---pasting board with weld this four steps, carry out according to the order of first assembling rear welding on the whole, its order is before welding by deformation effect that assembling makes outer cylinder body possess certain structural rigidity to bring to weaken follow-up welding, simultaneously, the assemble sequence of parts is also formulated according to the design feature of outer cylinder body, i.e. long vertical muscle, dividing plate, ring muscle assembles successively, not only be convenient to assemble with follow-up weld carry out smoothly, and assembling effect can be improved to strengthen the structural rigidity of outer cylinder body, in addition, for strengthening the structural rigidity of outer cylinder body further, reduce in follow-up outer cylinder body the outer cylinder body distortion of welding and causing, the design also outside inner barrel increase annular brace to improve the structural rigidity of outer cylinder body further, according to the experience in trial-manufacturing process, diametric(al) welding deformation along pin hole in welding process is larger, main cause is ring muscle negligible amounts, when welding long vertical muscle, the rigidity of support deficiency of ring muscle causes distortion, therefore the design often organizes between ring muscle and increases by one group of annular brace to overcome this defect on the basis of original ring muscle, be convenient to follow-uply be welded on carrying out smoothly on rotary jig frame, avoid the generation of welding deformation to the full extent, be conducive to improving overall dimensional accuracy.Therefore, the present invention not only welds not yielding, and can guarantee overall dimensions high accuracy.
2, the present invention is used in the weld industry technique of bolt-type hoistable platform spud leg making, long vertical muscle, ring muscle, when being welded on of dividing plate is carried out, according to the order of vertical muscle long after first ring muscle, its reason is: outer cylinder body inner ring muscle, the welding sequence of long vertical muscle affects outer cylinder body linearity, the key factor of ovality, because four long vertical muscle weld seams run through outer cylinder body length direction, and be back chipping penetration weld seam entirely, thermal weld stress amount is larger, larger on the welding deformation impact of spud leg, and the weld seam between ring muscle and outer cylinder body is angle welding, deformation effect during welding is relatively little, simultaneously, first weld-ring muscle is equivalent to outer cylinder body to reinforce, and the vertical muscle welded with the annular brace increased and outer cylinder body inner position, dividing plate forms overall supporting construction, enhance the rigidity of spud leg, thus distortion when weakening long vertical muscle welding, visible, the design is by reasonable arrangement outer cylinder body inner ring muscle, the welding sequence of long vertical muscle, the welding deformation of outer cylinder body can be controlled.Therefore, welding of the present invention is not yielding.
3, the present invention is used in the weld industry technique of bolt-type hoistable platform spud leg making, in second step, length is indulged between muscle and outer cylinder body, in the welding sequence of outside weld and the 4th step, between pasting board and outer cylinder body, the welding sequence of outside weld is all designed to the reason that transpostion interval is symmetrically welded and is: when welding object is the object of two slim-lined constructions, because weld length is longer, weld seam quantity is more, very easily welding deformation, therefore the design is for this welding object, specially devise transpostion interval and be symmetrically welded this welding sequence, first weld the weld seam of middle, point centered by it again, be symmetrically welded to both sides transpostion interval, advance successively, not only avoid the generation of welding deformation to the full extent, and be easy to operation.Therefore, welding of the present invention is not yielding.
4, the present invention is used in the weld industry technique of bolt-type hoistable platform spud leg making, when offering pin hole, first determine the cross searching of pin hole, press cross searching perforate again, the position dimension precision of pin hole can be ensured, simultaneously, due to the welding stress that the more existence of spud leg internal weld seams is certain, for prevent cylindrical shell both sides the number of openings more cause spud leg Stress Release and cause ovality change, the design also increased support shaped steel (consistent with the spacing of pin hole) at the position of outer cylinder body interpolation pin-and-hole before perforate, the distortion affected to avoid perforate, thus guarantee that overall dimensional accuracy is higher.Therefore, the impact on outer cylinder body overall dimensional accuracy when the present invention can avoid pin hole to offer, guarantees overall dimensions high accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the bolt-type hoistable platform that the present invention applies.
Fig. 2 is the perspective view of the spud leg made by the present invention.
Fig. 3 is the sectional view in C – C direction in Fig. 2.
Fig. 4 is the sectional view in D – D direction in Fig. 2.
Fig. 5 is the side structure schematic diagram of Fig. 2.
Fig. 6 is the weld seam schematic diagram in A – A direction in Fig. 5.
Fig. 7 is the weld seam schematic diagram in B – B direction in Fig. 5.
Fig. 8 is the arrangement schematic diagram of ring muscle, annular brace.
Fig. 9 is the cross sectional representation of annular brace in Fig. 8.
Figure 10 is the connection diagram supporting shaped steel and dividing plate.
Figure 11 is the sequential schematic that transpostion interval is symmetrically welded.
In figure: outer cylinder body 1, pasting board 2, groove 21, sub-pasting board 22, ring muscle 3, pressed on ring muscle 31, lower ring muscle 32, long vertical muscle 4, pin hole 5, latch box 6, dividing plate 61, base plate 62, external socket 7, annular brace 8, support shaped steel 9.
Detailed description of the invention
Illustrate that the present invention is further detailed explanation with detailed description of the invention below in conjunction with accompanying drawing.
See figure 2 – Figure 11, for the weld industry technique that bolt-type hoistable platform spud leg makes, described spud leg comprises outer cylinder body 1, pasting board 2, ring muscle 3, long vertical muscle 4 and pin hole 5, the inside of described outer cylinder body 1 is provided with long vertical muscle 4, ring muscle 3, latch box 6, the quantity that described length indulges muscle 4 is four, long vertical muscle 4 each other with the central shaft of outer cylinder body 1 for symmetry axis is symmetrical arranged, every two long vertical muscle 4 are one group, multiple latch box 6 is connected with between the inwall of two often in group long vertical muscle 4, the outer wall of two often in group long vertical muscle 4 is connected to pressed on ring muscle 31, lower ring muscle 32 is to form a whole ring muscle 3, described ring muscle 3 is arranged along the distribution sequence interval of latch box 6, latch box 6 comprises two dividing plates 61 and a base plate 62, latch box 6 and through pin hole 5 one_to_one corresponding offered on the sidewall of outer cylinder body 1, the outer wall of outer cylinder body 1 is connected with pasting board 2, pasting board 2 offers and pin hole 5 external socket 7 one to one, described weld industry technique comprises the following steps:
The first step: the assembling of parts: first blanking is also round as a ball to make outer cylinder body 1 with rolling bed, the rigging position line of long vertical muscle 4, ring muscle 3, latch box 6 is marked again on the inwall of outer cylinder body 1, then long vertical muscle 4, the dividing plate 61 of 6 li, latch box, ring muscle 3 is assembled successively according to rigging position line, the rigging position line place of the latch box 6 again between adjacent ring muscle 3 installs annular brace 8 additional, and structure, the matching requirements of annular brace 8 are consistent with ring muscle 3; After assembling, long vertical muscle 4, ring muscle 3, dividing plate 61, annular brace 8 all adopt tack welding to be fixed;
Second step: the welding of long vertical muscle, ring muscle, dividing plate: first determine whether above-mentioned assembling completes, determine errorless after, angle welding again between welding ring muscle 3 and outer cylinder body 1, welding sequence is for be symmetrically welded to two ends by centre, then the long vertical inside weld between muscle 4 and outer cylinder body 1 of welding, back root cleaning is carried out after inside weld has welded, the long vertical outside weld between muscle 4 and outer cylinder body 1 of welding subsequently, last welding diaphragm 61 and outer cylinder body 1, the long weld seam indulged between muscle 4, welding sequence is for be symmetrically welded to two ends by centre;
3rd step: offering of pin hole: the cross searching first determining each pin hole 5 on the outer wall of outer cylinder body 1, then undertaken cutting to offer pin hole 5 by the cross searching determined;
4th step: the assembling of pasting board with weld: first assemble pasting board 2 in the side of outer cylinder body 1, require that the external socket 7 on pasting board 2 is alignd with the pin hole 5 that outer cylinder body 1 sidewall is offered, again pasting board 2 is fixed with tack welding, and assemble the base plate 62 of latch box 6, then pasting board 2 is assembled at the opposite side of outer cylinder body 1 according to same requirement, base plate 62, after having assembled, weld pasting board 2 again, inside weld between outer cylinder body 1, the nearly external socket 7 of this inside weld is arranged, then pasting board 2 is welded, outside weld between outer cylinder body 1, this outside weld distributes along the central axis direction of outer cylinder body 1, finally weld base plate 62 and dividing plate 61, weld seam between long vertical muscle 4, after above-mentioned weld seam all welds, take off annular brace 8 and can complete described weld industry technique.
Described weld industry technique is also provided with nondestructive flaw detection examination step after above-mentioned 4th step; Described nondestructive flaw detection examination refers to: long vertical weld seam between muscle 4 and outer cylinder body 1 is carried out to the ultrasonic examination of 100%, meet JB/T4730 – 2005II level qualified, meanwhile, carry out kerosene lysimetric test to the weld seam around pin hole 5.
In described second step, in the welding sequence of long vertical inside and outside weld seam between muscle 4 and outer cylinder body 1 and the 4th step, between pasting board 2 and outer cylinder body 1, the welding sequence of outside weld is all that transpostion interval is symmetrically welded, and specifically refers to:
The outside weld thing of bar shaped and the equal horizontal positioned of welded article of bar shaped, there is upper side weld between the two, lower side weld two welding regions, upper side weld, lower side weld is all according to 13, 25, 11, 23, 9, 21, 7, 19, 5, 17, 3, 15, 1, 14, 2, 16, 4, 18, 6, 20, 8, 22, 10, 24, 12, the number order of 26 arranges pad, during welding, first weld the 1st – No. 13 pads in lower side weld successively, again by outside weld thing, welded article rotates the 1st – No. 13 pads welding successively after 180 ° and go up in side weld, then the 14th – No. 26 pads in upper side weld are welded successively, again by outside weld thing, the 14th – No. 26 pads under welded article rotates and welds successively after 180 ° in side weld, so far, all pads all weld complete.
In the described first step, the thickness of slab of described annular brace 8 is 20mm, and its tack welding length is 40mm.
In described 3rd step, need to install additional between the cross searching determining each pin hole 5 and support shaped steel 9, its installation steps are: first divided into groups between two along the radial direction of outer cylinder body 1 by the rigging position line of latch box 6, again the dividing plate 61 of two latch boxes 6 in every group is fixedly connected with by supporting shaped steel 9, one supports corresponding two dividing plates 61 of shaped steel 9, corresponding two the support shaped steel 9 be parallel to each other of one group of latch box 6, this support shaped steel 9 and the diameter of outer cylinder body 1 cross section coincide and perpendicular with the central shaft of outer cylinder body 1;
In described 4th step, after weld seam all welds, take off annular brace 8, support shaped steel 9 can complete described weld industry technique.
In described 4th step, between pasting board 2, outer cylinder body 1, the welding requirements of inside weld is: be symmetrically welded to two ends by centre, requires the groove 21 of pasting board 2 side to fill up, and keep mutually concordant with pin hole 5 on external socket 7, outer cylinder body 1 on pasting board 2 during welding.
In described 4th step, if the every side of outer cylinder body 1 connect pasting board 2 when being made up of the sub-pasting board 22 of polylith, after completing the welding between pasting board 2, outer cylinder body 1, need first to weld the attachment weld between sub-pasting board 22, welding sequence is that outer cylinder body 1 bilateral symmetry is welded, after welding, then weld base plate 62 and dividing plate 61, the long weld seam indulged between muscle 4.
Principle of the present invention is described as follows:
One, in existing bolt-type hoistable platform spud leg make time find overall dimensional accuracy require higher, weld yielding problem, find through lot of experiments and research, the assembling of inner components, welding sequence are the keys of spud leg integral solder Deformation control.The welding sequence followed conventional lines is difficult to the linearity and the ovality that ensure spud leg, and spud leg welding deformation is once be formed, and component is difficult to correct, and even can cause scrapping of component, increases the risk of product, affects the manufacturing cycle of product.Through test of many times, the design has formulated a set of strict weld industry measure, well can control its welding deformation in spud leg manufacturing process, makes the dimensional tolerance of spud leg all within the scope of designing requirement.This weld industry technique is mainly divided into following components:
1, formulate the assemble sequence of its inner body according to the design feature of spud leg outer cylinder body, and increase annular brace, support shaped steel therein to reduce welding deformation;
2, by reasonably arranging the welding sequence of the parts such as outer cylinder body inner ring muscle, long vertical muscle, the welding deformation of outer cylinder body is controlled;
3, reasonably arranging the hole opening technology of pin hole, ensure the position dimension precision of pin hole, reducing because perforate is on the impact of the spud leg deformation of member by supporting shaped steel simultaneously.
Two, welding sequence is for be symmetrically welded to two ends by centre:
First weld the weld seam of middle, then centered by it point, then weld the weld seam on central point both sides in turn, advance successively.Such as a row has seven weld seams, its distributing order is just 6,4,2,1,3,5,7, first weld middle be numbered 1 weld seam, then weld 2,3 about it successively, then weld 4,5 successively, finally weld 6,7 successively, advance in turn.
Three, in described second step in the welding sequence of long vertical inside and outside weld seam between muscle and outer cylinder body and the 4th step between pasting board and outer cylinder body the welding sequence of outside weld be all that transpostion interval is symmetrically welded, specifically refer to:
The outside weld thing (as long vertical muscle or pasting board) of bar shaped and welded article (as outer cylinder body) all horizontal positioned of bar shaped, there is upper side weld between the two, lower side weld two welding regions, upper side weld, lower side weld is all according to 13, 25, 11, 23, 9, 21, 7, 19, 5, 17, 3, 15, 1, 14, 2, 16, 4, 18, 6, 20, 8, 22, 10, 24, 12, the order of 26 arranges identical pad, during welding, first weld the 1st – No. 13 pads in lower side weld successively, again by outside weld thing, welded article rotates the 1st – No. 13 pads welding successively after 180 ° and go up in side weld, then the 14th – No. 26 pads in upper side weld are welded successively, again by outside weld thing, the 14th – No. 26 pads under welded article rotates and welds successively after 180 ° in side weld, so far, all pads all weld complete.The distortion of outside weld thing, welded article when this kind of welding sequence can be avoided welding to the full extent, welding efficiency is higher.
Four: nondestructive flaw detection examination:
The long weld seam indulging muscle and outer cylinder body is carried out to the ultrasonic examination of 100%, meet JB/T4730 – 2005II level qualified, because means suitable when spud leg works inserts in seawater, for ensureing that the sealing of spud leg carries out kerosene lysimetric test to the weld seam at pin hole position
Embodiment 1:
See figure 2 – Figure 11, for the weld industry technique that bolt-type hoistable platform spud leg makes, described spud leg comprises outer cylinder body 1, pasting board 2, ring muscle 3, long vertical muscle 4, pin hole 5 and latch box 6, the inside of described outer cylinder body 1 is provided with long vertical muscle 4, ring muscle 3, latch box 6, the quantity that described length indulges muscle 4 is four, long vertical muscle 4 each other with the central shaft of outer cylinder body 1 for symmetry axis is symmetrical arranged, every two long vertical muscle 4 are one group, multiple latch box 6 is connected with between the inwall of two often in group long vertical muscle 4, the outer wall of two often in group long vertical muscle 4 is connected to pressed on ring muscle 31, lower ring muscle 32 is to form a whole ring muscle 3, described ring muscle 3 is arranged along the distribution sequence interval of latch box 6, latch box 6 comprises two dividing plates 61 and a base plate 62, latch box 6 and through pin hole 5 one_to_one corresponding offered on the sidewall of outer cylinder body 1, the outer wall of outer cylinder body 1 is connected with pasting board 2, pasting board 2 offers and pin hole 5 external socket 7 one to one, described weld industry technique comprises the following steps:
The first step: the assembling of parts: first blanking is also round as a ball to make outer cylinder body 1 with rolling bed, the rigging position line of long vertical muscle 4, ring muscle 3, latch box 6 is marked again on the inwall of outer cylinder body 1, then long vertical muscle 4, the dividing plate 61 of 6 li, latch box, ring muscle 3 is assembled successively according to rigging position line, the thickness of slab that the rigging position line place of the latch box 6 again between adjacent ring muscle 3 installs annular brace 8(annular brace 8 additional is 20mm, its tack welding length is 40mm), structure, the matching requirements of annular brace 8 are consistent with ring muscle 3; After assembling, long vertical muscle 4, ring muscle 3, dividing plate 61, annular brace 8 all adopt tack welding to be fixed;
Second step: the welding of long vertical muscle, ring muscle, dividing plate: first determine whether above-mentioned assembling completes, determine errorless after, angle welding again between welding ring muscle 3 and outer cylinder body 1, welding sequence is for be symmetrically welded to two ends by centre, then the long vertical inside weld between muscle 4 and outer cylinder body 1 of welding, back root cleaning is carried out after inside weld has welded, the long vertical outside weld between muscle 4 and outer cylinder body 1 of welding subsequently, last welding diaphragm 61 and outer cylinder body 1, the long weld seam indulged between muscle 4, welding sequence is for be symmetrically welded to two ends by centre;
3rd step: offering of pin hole: first the rigging position line of latch box 6 is divided into groups between two along the radial direction of outer cylinder body 1, again the dividing plate 61 of two latch boxes 6 in every group is fixedly connected with by supporting shaped steel 9, one supports corresponding two dividing plates 61 of shaped steel 9, one group of corresponding two support shaped steel 9 be parallel to each other of latch box 6, this support shaped steel 9 and the diameter of outer cylinder body 1 cross section coincide and perpendicular with the central shaft of outer cylinder body 1, then on the outer wall of outer cylinder body 1, determine the cross searching of each pin hole 5, then undertaken cutting to offer pin hole 5 by the cross searching determined;
4th step: the assembling of pasting board with weld: first assemble pasting board 2 in the side of outer cylinder body 1, require that the external socket 7 on pasting board 2 is alignd with the pin hole 5 that outer cylinder body 1 sidewall is offered, again pasting board 2 is fixed with tack welding, and assemble the base plate 62 of latch box 6, then pasting board 2 is assembled at the opposite side of outer cylinder body 1 according to same requirement, base plate 62, after having assembled, weld pasting board 2 again, inside weld between outer cylinder body 1, the nearly external socket 7 of this inside weld arranges (pasting board 2, between outer cylinder body 1, the welding requirements of inside weld is: be symmetrically welded to two ends by centre, the groove 21 of pasting board 2 side is required to fill up during welding, and keep and external socket 7 on pasting board 2, on outer cylinder body 1, pin hole 5 is mutually concordant), then pasting board 2 is welded, outside weld between outer cylinder body 1, this outside weld distributes along the central axis direction of outer cylinder body 1, if the every side of outer cylinder body 1 connect pasting board 2 when being made up of the sub-pasting board 22 of polylith, complete pasting board 2, after welding between outer cylinder body 1, need first to weld the attachment weld between sub-pasting board 22, welding sequence is that outer cylinder body 1 bilateral symmetry is welded, after welding, weld base plate 62 and dividing plate 61 again, weld seam between long vertical muscle 4, after above-mentioned weld seam all welds, take off annular brace 8, support shaped steel 9 can complete described weld industry technique,
In described second step, length is indulged between muscle 4 and outer cylinder body 1, in the welding sequence of outside weld and the 4th step, between pasting board 2 and outer cylinder body 1, the welding sequence of outside weld is all that transpostion interval is symmetrically welded, concrete finger: the outside weld thing of bar shaped and the equal horizontal positioned of welded article of bar shaped, there is upper side weld between the two, lower side weld two welding regions, upper side weld, lower side weld is all according to 13, 25, 11, 23, 9, 21, 7, 19, 5, 17, 3, 15, 1, 14, 2, 16, 4, 18, 6, 20, 8, 22, 10, 24, 12, the number order of 26 arranges pad, during welding, first weld the 1st – No. 13 pads in lower side weld successively, again by outside weld thing, welded article rotates the 1st – No. 13 pads welding successively after 180 ° and go up in side weld, then the 14th – No. 26 pads in upper side weld are welded successively, again by outside weld thing, the 14th – No. 26 pads under welded article rotates and welds successively after 180 ° in side weld, so far, all pads all weld complete.
Claims (7)
1., for the weld industry technique that bolt-type hoistable platform spud leg makes, described spud leg comprises outer cylinder body (1), pasting board (2), ring muscle (3), long vertical muscle (4) and pin hole (5), the inside of described outer cylinder body (1) is provided with long vertical muscle (4), ring muscle (3), latch box (6), the quantity that described length indulges muscle (4) is four, long vertical muscle (4) is mutual is that symmetry axis is symmetrical arranged with the central shaft of outer cylinder body (1), every two long vertical muscle (4) are one group, multiple latch box (6) is connected with between the inwall of two often in group long vertical muscle (4), the outer wall of two often in group long vertical muscle (4) is connected to pressed on ring muscle (31), lower ring muscle (32) is to form a whole ring muscle (3), described ring muscle (3) is arranged along the distribution sequence interval of latch box (6), latch box (6) comprises two dividing plates (61) and a base plate (62), latch box (6) and through pin hole (5) one_to_one corresponding offered on the sidewall of outer cylinder body (1), the outer wall of outer cylinder body (1) is connected with pasting board (2), pasting board (2) offers and pin hole (5) external socket (7) one to one, it is characterized in that: described weld industry technique comprises the following steps:
The first step: the assembling of parts: first blanking is also round as a ball to make outer cylinder body (1) with rolling bed, the rigging position line of long vertical muscle (4), ring muscle (3), latch box (6) is marked again on the inwall of outer cylinder body (1), then long vertical muscle (4), latch box (6) inner dividing plate (61), ring muscle (3) is assembled successively according to rigging position line, the rigging position line place of the latch box (6) again between adjacent ring muscle (3) installs annular brace (8) additional, and structure, the matching requirements of annular brace (8) are consistent with ring muscle (3); After assembling, long vertical muscle (4), ring muscle (3), dividing plate (61), annular brace (8) all adopt tack welding to be fixed;
Second step: long vertical muscle, ring muscle, the welding of dividing plate: first determine whether above-mentioned assembling completes, determine errorless after, angle welding again between welding ring muscle (3) and outer cylinder body (1), welding sequence is for be symmetrically welded to two ends by centre, then the long vertical inside weld between muscle (4) and outer cylinder body (1) of welding, back root cleaning is carried out after inside weld has welded, the long vertical outside weld between muscle (4) and outer cylinder body (1) of welding subsequently, last welding diaphragm (61) and outer cylinder body (1), weld seam between long vertical muscle (4), welding sequence is for be symmetrically welded to two ends by centre,
3rd step: offering of pin hole: the cross searching first determining each pin hole (5) on the outer wall of outer cylinder body (1), then undertaken cutting to offer pin hole (5) by the cross searching determined;
4th step: the assembling of pasting board with weld: first assemble pasting board (2) in the side of outer cylinder body (1), require that the external socket (7) on pasting board (2) is alignd with the pin hole (5) that outer cylinder body (1) sidewall is offered, again pasting board (2) is fixed with tack welding, and assemble the base plate (62) of latch box (6), then pasting board (2) is assembled at the opposite side of outer cylinder body (1) according to same requirement, base plate (62), after having assembled, weld pasting board (2) again, inside weld between outer cylinder body (1), the nearly external socket of this inside weld (7) is arranged, then pasting board (2) is welded, outside weld between outer cylinder body (1), this outside weld distributes along the central axis direction of outer cylinder body (1), finally weld base plate (62) and dividing plate (61), weld seam between long vertical muscle (4), after above-mentioned weld seam all welds, take off annular brace (8) and described weld industry technique can be completed.
2. the weld industry technique made for bolt-type hoistable platform spud leg according to claim 1, is characterized in that: described weld industry technique is also provided with nondestructive flaw detection examination step after above-mentioned 4th step;
Described nondestructive flaw detection examination refers to: long vertical weld seam between muscle (4) and outer cylinder body (1) is carried out to the ultrasonic examination of 100%, meet JB/T4730 – 2005II level qualified, meanwhile, carries out kerosene lysimetric test to pin hole (5) weld seam around.
3. the weld industry technique made for bolt-type hoistable platform spud leg according to claim 1 and 2, is characterized in that:
In described second step, in the welding sequence of long vertical inside and outside weld seam between muscle (4) and outer cylinder body (1) and the 4th step, between pasting board (2) and outer cylinder body (1), the welding sequence of outside weld is all that transpostion interval is symmetrically welded, and specifically refers to:
The outside weld thing of bar shaped and the equal horizontal positioned of welded article of bar shaped, there is upper side weld between the two, lower side weld two welding regions, upper side weld, lower side weld is all according to 13, 25, 11, 23, 9, 21, 7, 19, 5, 17, 3, 15, 1, 14, 2, 16, 4, 18, 6, 20, 8, 22, 10, 24, 12, the number order of 26 arranges pad, during welding, first weld the 1st – No. 13 pads in lower side weld successively, again by outside weld thing, welded article rotates the 1st – No. 13 pads welding successively after 180 ° and go up in side weld, then the 14th – No. 26 pads in upper side weld are welded successively, again by outside weld thing, the 14th – No. 26 pads under welded article rotates and welds successively after 180 ° in side weld, so far, all pads all weld complete.
4. the weld industry technique made for bolt-type hoistable platform spud leg according to claim 1 and 2, is characterized in that:
In the described first step, the thickness of slab of described annular brace (8) is 20mm, and its tack welding length is 40mm.
5. the weld industry technique made for bolt-type hoistable platform spud leg according to claim 1 and 2, is characterized in that:
In described 3rd step, need to install additional between the cross searching determining each pin hole (5) and support shaped steel (9), its installation steps are: first the radial direction of the rigging position line of latch box (6) along outer cylinder body (1) divided into groups between two, again the dividing plate (61) of two latch boxes (6) in every group is fixedly connected with by supporting shaped steel (9), one supports corresponding two dividing plates (61) of shaped steel (9), one group of corresponding two support shaped steel (9) be parallel to each other of latch box (6), this support shaped steel (9) coincides with the diameter of outer cylinder body (1) cross section, and it is perpendicular with the central shaft of outer cylinder body (1),
In described 4th step, after weld seam all welds, take off annular brace (8), support shaped steel (9) can complete described weld industry technique.
6. the weld industry technique made for bolt-type hoistable platform spud leg according to claim 1 and 2, is characterized in that:
In described 4th step, between pasting board (2), outer cylinder body (1), the welding requirements of inside weld is: be symmetrically welded to two ends by centre, require the groove (21) of pasting board (2) side to fill up during welding, and keep external socket (7) upper with pasting board (2), the upper pin hole (5) of outer cylinder body (1) mutually concordant.
7. the weld industry technique made for bolt-type hoistable platform spud leg according to claim 1 and 2, is characterized in that:
In described 4th step, if the every side of outer cylinder body (1) connect pasting board (2) when being made up of the sub-pasting board of polylith (22), after completing the welding between pasting board (2), outer cylinder body (1), need first to weld the attachment weld between sub-pasting board (22), welding sequence is that outer cylinder body (1) bilateral symmetry is welded, after welding, then weld base plate (62) and dividing plate (61), the long weld seam indulged between muscle (4).
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