CN115158596A - Assembling and welding process for horn mouth surrounding plate pushed from head to side - Google Patents
Assembling and welding process for horn mouth surrounding plate pushed from head to side Download PDFInfo
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- CN115158596A CN115158596A CN202211000290.0A CN202211000290A CN115158596A CN 115158596 A CN115158596 A CN 115158596A CN 202211000290 A CN202211000290 A CN 202211000290A CN 115158596 A CN115158596 A CN 115158596A
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- 238000003466 welding Methods 0.000 title claims abstract description 76
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000009966 trimming Methods 0.000 claims description 23
- 210000001503 joint Anatomy 0.000 claims description 13
- 239000010953 base metal Substances 0.000 claims description 12
- 230000011218 segmentation Effects 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 7
- 238000003754 machining Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/40—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms characterised by joining methods
- B63B73/43—Welding, e.g. laser welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
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- Ocean & Marine Engineering (AREA)
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- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The application relates to the technical field of ship construction, in particular to a welding process for a horn mouth surrounding plate pushed from the head side. The assembly welding process of the front-side push horn mouth surrounding plate comprises the following steps: firstly, prefabricating to obtain a plurality of coaming sections; next, determining the hole opening position of the outer plate, and marking a hole opening position line and a plurality of butt seam position lines on the outer plate; next, the hole position line is shifted inwards for a preset distance to obtain a hole cutting line, and holes are cut on the outer plate along the hole cutting line; next, marking a plurality of butt seam position lines on the intersection line of the cylinder; next, respectively assembling the plurality of enclosing plate segments to preset positions to finish the preassembly of the enclosing plate segments; and next, welding the coaming sections with the outer plate, the coaming sections with the barrel and the adjacent coaming sections, thereby smoothly, quickly and accurately completing the assembly welding of the head-side push horn mouth coaming between the barrel and the outer plate.
Description
Technical Field
The application relates to the technical field of ship construction, in particular to a welding process for a horn mouth surrounding plate pushed from the head side.
Background
The structure that the cruise ship head pushed horn mouth bounding wall is very complicated, the cruise ship head pushed has threely, three head pushed is located different rib position departments, the shape of horn mouth is also not identical, wherein two horn mouths are arc horn mouths, the other one is conical horn mouth, the line type of horn mouth department is very complicated, the intersection line of horn mouth and the barrel that the head pushed is the curve, it is also the curve with the intersection line of cruise ship planking, this makes the processing and the installation of bounding wall all have very big degree of difficulty.
Disclosure of Invention
The invention aims to provide an assembling and welding process for a bell mouth coaming by pushing a bell mouth coaming from the head side so as to smoothly, quickly and accurately finish the construction of the bell mouth coaming.
The invention provides a welding process for a front-side push horn mouth surrounding plate, which comprises the following steps:
step 100, dividing the bell-mouth coaming into a plurality of coaming sections along the circumferential direction of the bell-mouth coaming, and prefabricating to obtain a plurality of coaming sections;
step 200, determining the hole opening position of the outer plate, and marking a hole opening position line and a plurality of butt seam position lines on the outer plate, wherein the butt seam position lines correspond to butt seams among the plurality of coaming segments one by one;
step 300, shifting the hole-opening position line inwards by a preset distance to obtain a hole-opening cutting line, and marking the hole-opening cutting line on the outer plate; cutting an opening on the outer plate along an opening cutting line to reserve a repairable allowance for the opening;
step 400, marking a plurality of seam position lines which are in one-to-one correspondence with the butt seams among the plurality of coaming segments on the intersection line of the cylinder;
500, respectively assembling a plurality of enclosing plate segments to preset positions to finish the preassembly of the enclosing plate segments;
step 600, welding the coaming sections with the outer plate, the coaming sections with the barrel and the adjacent coaming sections.
Further, in step 100, prefabricating the shroud segment further comprises the following steps:
determining the design size of each coaming segment;
amplifying on the basis of the design size to obtain the processing size of each coaming section;
and prefabricating the coaming sections according to the machining size so as to reserve trimming allowance on the peripheral sides of the coaming sections.
Furthermore, the two sides of the coaming section facing the outer plate and the cylinder body are respectively provided with a first trimming and cutting allowance, and the first trimming and cutting allowance is 65-75 mm;
the two sides of the enclosing plate sections facing the two adjacent enclosing plate sections are respectively provided with a second trimming allowance, and the second trimming allowance is 190-210 mm.
Further, in the step 200, when the hole position line and the butt seam position line are scribed on the outer plate, the method includes the following steps:
marking a water line surface and a rib position surface cross line passing through the central point on the outer plate according to the central point data of the cylinder;
marking through a marking template, wherein a positioning cross line and a butt joint mark line are formed on the marking template; and (3) overlapping the positioning cross line of the marking template with the cross line on the outer plate, fitting the marking sample with the outer plate, marking the outer plate along the outer contour of the outer plate to obtain a hole opening position line, and marking the outer plate along the butt joint mark line on the outer plate to obtain a butt joint position line.
Further, the scribing template is divided into two halves along one of the positioning crosses.
Further, in the step 300, the hole cutting line is inwardly shifted from the hole position line by a distance of 45mm to 55mm.
Further, in step 600, when the coaming is segmented and the outer plate is welded with the cylinder, the method includes the following steps:
before welding, dirt removal needs to be carried out on the welding groove and the base metal within the range of 20mm on two sides of the welding groove;
before formal welding, performing tack welding between base metals, and preheating the base metals;
and finishing formal welding of the base metal according to the welding requirement.
Further, in step 600, the welding sequence of the base material is:
the method comprises the steps of firstly welding the surrounding plate sections and the outer plate, then welding the surrounding plate sections and the barrel body, and finally welding the adjacent surrounding plate sections.
Further, the first side pushing of the cruise ship comprises a first side pushing, a second side pushing and a third side pushing which are positioned at different rib positions;
the first head side push and the second head side push are arranged on the horn mouth surrounding plate in a surrounding mode to form a conical horn mouth; and the bell mouth coaming at the third head side pushing part is encircled to form an arc bell mouth.
Further, the thickness of barrel is 30mm, the outer plate thickness is 20mm, the thickness of bellmouth bounding wall is 25mm, the material of bellmouth bounding wall is DH36.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a welding process for a head-side push horn mouth surrounding plate, which comprises the following steps of: firstly, dividing a bell-mouth coaming into a plurality of coaming sections along the circumferential direction of the bell-mouth coaming, and prefabricating to obtain a plurality of coaming sections; determining the hole opening position of the outer plate, and marking a hole opening position line and a plurality of butt seam position lines on the outer plate, wherein the plurality of butt seam position lines correspond to butt seams among the plurality of enclosing plate segments one by one; next, the hole-opening position line is inwardly deviated by a preset distance to obtain a hole-opening cutting line, and the hole-opening cutting line is marked on the outer plate; cutting an opening on the outer plate along the opening cutting line so as to reserve a repairable allowance for the opening; next, marking a plurality of seam position lines which correspond to the butt seams among the plurality of coaming sections one by one on an intersection line of the barrel; next, respectively assembling the plurality of enclosing plate segments to preset positions to finish the preassembly of the enclosing plate segments; and next, welding the coaming sections with the outer plate, the coaming sections with the barrel and the adjacent coaming sections, thereby smoothly, quickly and accurately completing the assembly welding of the first-side push horn-mouth coaming between the barrel and the outer plate.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural view of a leading-side push bell-mouth shroud according to an embodiment of the present invention;
FIG. 2 is a schematic view of a barrel and an outer plate provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic illustration of design dimensions and tooling dimensions of a shroud segment provided in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of a scribing template according to an embodiment of the present invention;
FIG. 5 is a schematic view of an arcuate flare provided in accordance with an embodiment of the present invention;
fig. 6 is a schematic view of a conical flare provided in an embodiment of the present invention.
Reference numerals:
1 bell-mouthed coaming, 11-coaming segmentation, 12-butt joint, 2-marking template, 3-cylinder and 4-outer plate.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
A process for welding a push-to-start bellmouth skirt plate according to some embodiments of the present application is described below with reference to fig. 1 to 6.
The application provides a first side pushes away horn mouth bounding wall dress and welds technology, includes following step:
step 100, dividing the bell mouth coaming into a plurality of coaming subsections along the circumferential direction of the bell mouth coaming, and prefabricating to obtain a plurality of coaming subsections;
200, determining the hole opening position of the outer plate, and marking a hole opening position line and a plurality of butt seam position lines on the outer plate, wherein the plurality of butt seam position lines correspond to butt seams among the plurality of enclosing plate segments one by one;
step 300, shifting the hole-opening position line inwards by a preset distance to obtain a hole-opening cutting line, and marking the hole-opening cutting line on the outer plate; cutting an opening on the outer plate along the opening cutting line so as to reserve a repairable allowance for the opening;
step 400, marking a plurality of seam position lines which are in one-to-one correspondence with the butt seams among the plurality of coaming segments on the intersection line of the cylinder;
500, respectively assembling a plurality of enclosing plate segments to preset positions to finish the preassembly of the enclosing plate segments;
step 600, welding the coaming sections with the outer plate, the coaming sections with the barrel and the adjacent coaming sections.
The application provides a first side pushes away horn mouth bounding wall dress welding technology includes following step:
firstly, dividing a bell-mouth coaming 1 into a plurality of coaming sections 11 along the circumferential direction of the bell-mouth coaming 1 according to a drawing of the bell-mouth coaming 1, for example, dividing the bell-mouth coaming 1 into eight coaming sections 11 with equal arc length along the circumferential direction of the bell-mouth coaming 1 as shown in fig. 1, and then processing the coaming sections 11 according to the size data of each coaming section 11; the plurality of shroud segments 11 may be connected end to end in sequence in a predetermined order to splice to form the complete flare shroud 1.
Next, as shown in fig. 2, the position of the opening is determined on the outer plate 4, that is, the position where the outer plate 4 is used to connect with the barrel 3 pushed to the head side; an opening position line and a plurality of butt seam position lines are marked on the outer plate 4, the plurality of butt seam position lines correspond to the butt seams 12 among the plurality of enclosing plate subsections 11 one by one, namely when the plurality of enclosing plate subsections 11 are spliced at the opening position according to a preset sequence, the butt seams 12 among the plurality of enclosing plate subsections 11 are all opposite to one butt seam position line, namely, when the enclosing plate subsections 11 are spliced, the positions of the enclosing plate subsections 11 can be determined through the butt seam position lines.
Next, the hole-opening position line is inwardly shifted by a predetermined distance, a hole-opening cutting line is obtained inside the hole-opening position line, and the hole-opening cutting line is scribed on the outer panel 4; the opening is cut on the outer plate 4 along the opening cutting line, so that an opening with a slightly smaller size is obtained on the outer plate 4, a modifiable allowance is reserved for the opening, and when the coaming section 11 is assembled subsequently, the opening can be modified according to actual conditions so as to be matched with the coaming for installation.
Next, a plurality of butt joint position lines are also marked on a joint line formed by the intersection of the barrel 3 and the bell-mouth coaming 1, and the plurality of butt joint position lines on the barrel 3 are in one-to-one correspondence with the butt joints 12 among the plurality of coaming subsections 11; that is, the butt seam 12 for any adjacent two shroud segments 11 corresponds to two butt seam position lines, one being the butt seam position line on the outer panel 4 and one being the butt seam position line on the barrel 3, so that the shroud segments 11 can be accurately fitted to predetermined positions.
Next, a plurality of surrounding plate segments 11 are respectively assembled at preset positions between the open holes of the outer plate 4 and the barrel 3, so that the butt seams 12 between any two adjacent surrounding plate segments 11 are respectively opposite to the corresponding butt seam positions on the outer plate 4 and the barrel 3, the preassembly of the surrounding plate segments 11 is completed, the surrounding plate segments 11 are ensured to be assembled in place, and the assembly precision is ensured.
Next, the adjacent coaming sections 11, the coaming sections 11 and the outer plate 4, and the coaming sections 11 and the barrel 3 are welded, so that the assembly and welding of the first-side push horn-mouth coaming 1 between the barrel 3 and the outer plate 4 are smoothly, quickly and accurately completed.
In this embodiment, preferably, in step 100, when prefabricating the coaming segment, as shown in fig. 3, the method further comprises the steps of:
firstly, according to the drawing of horn mouth bounding wall 1, after dividing horn mouth bounding wall 1 into polylith bounding wall segmentation 11 along its axial, can acquire the design size of every bounding wall segmentation 11 according to the drawing, if according to design size processing polylith bounding wall segmentation 11 promptly, a plurality of bounding wall segmentations 11 that obtain can splice end to end in order and form the complete horn mouth bounding wall 1 that satisfies the designing requirement.
Next, after the design size of each shroud segment 11 is determined, the design size is enlarged on the basis of the design size, as shown in fig. 3, the machining size of each shroud segment 11 is obtained, and the shroud segments 11 are machined according to the machining size, so that the obtained shroud segments 11 are larger than the shroud segments with standard sizes in appearance by one circle, and therefore, trimming margins are reserved on the peripheral sides of the prefabricated shroud segments 11. When the shroud segments 11 are assembled to the predetermined position between the outer plate 4 and the barrel 3 in step 500, allowance trimming may be performed on the opening as needed, and allowance trimming may also be performed on the periphery of the shroud segments 11, thereby overcoming a machining error and ensuring that each shroud segment 11 can be accurately assembled to the predetermined position.
In this embodiment, it is preferable that the trimming margins reserved for the two sides of the shroud segment 11 toward the outer plate 4 and the cylinder 3 in comparison with the design size are first trimming margins, and the trimming margins reserved for the two sides of the shroud segment 11 toward the adjacent two shroud segments in comparison with the design size are second trimming margins. Specifically, the first trimming allowance is 65mm-75mm, and the second trimming allowance is 190mm-210mm; further preferably, the first trimming margin is 70mm, and the second trimming margin is 200mm. Thereby reserving sufficient trimming and cutting margins around the enclosing plate subsection 11 respectively to adapt to the matching error of each part at the assembling position.
In this embodiment, preferably, in step 200, the process of marking the hole position line and the butt seam position line on the outer panel includes the steps of:
firstly, the position data of the central point of the cylinder pushed at the head side is determined according to the drawing of a mail steamer, a waterline, namely a waterline, passing through the central point is marked on the outer plate, an intersection line, namely a rib line, of a rib position plane passing through the central line point and the outer plate is marked on the outer plate, and the waterline and the rib position line are intersected, so that a cross line is formed on the outer plate.
Next, as shown in fig. 4, the outer panel is scribed by the scribing template 2, the positioning cross line is formed on the scribing template, and the scribing template is placed on the outer panel so that the positioning cross line of the scribing template coincides with the cross line on the outer panel, and the scribing template can be completely attached to the position of the outer panel where the hole needs to be formed.
Next, the outer contour line of the scribing sample plate is the hole opening position line, and the hole opening position line can be scribed on the outer plate by scribing along the outer contour of the scribing outer plate; the marking template is also provided with a plurality of butt joint mark lines which correspond to the segmented butt joints of the coamings one by one, and the outer plate is marked along the butt joint mark lines on the marking template to mark a butt joint position line on the outer plate, so that the butt joint position line and the hole forming position line are accurately marked on the outer plate through the marking template.
In this embodiment, preferably, since the size of the scribing template is large, in order to facilitate lifting the scribing template to the open hole position and accurately positioning the scribing template and the outer plate, the scribing template is divided into two halves along one of the positioning cross lines; when in scribing, the two half scribing sample plates are respectively hoisted to preset positions and spliced into a complete scribing sample plate.
In this embodiment, it is preferable that the position of the opening cutting line is offset inward by 45mm to 55mm, and it is further preferable that the offset is 50mm in step 300, so that an opening trimming margin is reserved on the outer panel, so that the opening can be trimmed according to actual assembly conditions when the coaming segments are assembled.
In this embodiment, preferably, in step 600, when the coaming segment, the outer plate and the barrel are welded, the following steps are included;
firstly, removing dirt, such as oxide, moisture, oil stain and other dirt, on a welding groove and parent metal within the range of 20mm on two sides before welding; the base material is the general name of the coaming section, the outer plate and the cylinder which need to be welded.
And secondly, performing tack welding between the base metals, preheating the base metals after tack welding, and then finishing formal welding of the base metals according to welding requirements. When the tack welding is carried out, the length of the tack welding is at least 50mm; if the positioning welding seam is cracked or has other unacceptable defects, the positioning welding seam is planed and the positioning welding is carried out again.
Preheating a base material before formal welding, wherein when the temperature of the base material is lower than 0 ℃, the base material is preheated to at least 50 ℃; if the repair of the welding seam occurs, the preheating temperature needs to be increased by 25 ℃ and at least can not be lower than 50 ℃.
In the formal welding process, the welding is carried out strictly according to the requirements of process specifications, and the welding work of the whole welding line is completed as once as possible; when multilayer multi-pass welding is adopted, a welder needs to remove welding slag and splash after welding each welding pass, and the joint positions of each welding pass are staggered by not less than 50mm so as to ensure the welding quality.
In this embodiment, preferably, in step 600, the welding sequence between the base materials is to weld the surrounding plate segments and the outer plate, then weld the surrounding plate segments and the barrel, and finally weld the adjacent surrounding plates, so as to ensure the welding quality and avoid large deformation during welding.
In an embodiment of the present application, preferably, the first push of the mail steamer includes three first pushes at different rib positions, namely a first push, a second push and a third push, wherein as shown in fig. 6, the bellmouth enclosures of the first push and the second push enclose the formed bellmouth to form a conical bellmouth, and as shown in fig. 5, the bellmouth enclosures of the third push enclose the formed bellmouth to form an arc-shaped bellmouth. When the horn mouth surrounding plates pushed to the three head sides are assembled, corresponding surrounding plate segmentation and a marking template for marking are prefabricated correspondingly to the three head sides, and then the assembling and welding of the horn mouth surrounding plates pushed to the head sides can be smoothly, quickly and accurately completed according to the assembling and welding process.
Preferably, the thickness of the cylinder body is 30mm, the thickness of the outer plate is 20mm, the DH36 ship plate (high-strength ship plate) is selected as the bell-mouth surrounding plate, and the thickness of the bell-mouth surrounding plate is 25mm, so that the strength of the bell-mouth surrounding plate is ensured, and the bell-mouth surrounding plate is convenient to weld with the cylinder body and the outer plate.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The assembling and welding process of the head-side push horn mouth surrounding plate is characterized by comprising the following steps of:
step 100, dividing the bell-mouth coaming into a plurality of coaming sections along the circumferential direction of the bell-mouth coaming, and prefabricating to obtain a plurality of coaming sections;
200, determining the hole opening position of the outer plate, and marking a hole opening position line and a plurality of butt seam position lines on the outer plate, wherein the plurality of butt seam position lines correspond to butt seams among the plurality of enclosing plate segments one by one;
step 300, shifting the hole-opening position line inwards by a preset distance to obtain a hole-opening cutting line, and marking the hole-opening cutting line on the outer plate; cutting an opening on the outer plate along the opening cutting line so as to reserve a repairable allowance for the opening;
step 400, marking a plurality of seam position lines which correspond to the butt seams among the plurality of coaming sections one by one on the intersection line of the barrel;
500, respectively assembling a plurality of enclosing plate sections to preset positions to complete the preassembly of the enclosing plate sections;
step 600, welding the coaming sections with the outer plate, the coaming sections with the barrel and the adjacent coaming sections.
2. The assembly welding process of the head-side push horn mouth surrounding plate according to claim 1, wherein in the step 100, the step of prefabricating the surrounding plate segments further comprises the following steps:
determining the design size of each coaming segment;
amplifying on the basis of the design size to obtain the processing size of each coaming section;
and prefabricating the coaming segmentation according to the processing size so as to reserve trimming allowance on the peripheral side of the coaming segmentation.
3. The assembling and welding process of the head-side push horn-mouth surrounding plate as claimed in claim 2, wherein the surrounding plate segment is provided with first trimming and cutting allowances at two sides facing the outer plate and the barrel respectively, and the first trimming and cutting allowances are 65mm-75mm;
the two sides of the enclosing plate sections, which face the two adjacent enclosing plate sections, are respectively provided with a second trimming allowance, and the second trimming allowance is 190-210 mm.
4. The assembly welding process of the fore-and-aft horn mouth surrounding plate according to claim 1, wherein in the step 200, when the hole position line and the butt seam position line are scribed on the outer plate, the process comprises the following steps:
marking a water line surface and a rib position surface cross line passing through the central point on the outer plate according to the central point data of the cylinder;
marking through a marking template, wherein a positioning cross line and a butt joint mark line are formed on the marking template; and (3) overlapping the positioning cross line of the marking template with the cross line on the outer plate, fitting the marking sample with the outer plate, marking on the outer plate along the outer contour of the outer plate to obtain an opening position line, and marking on the outer plate along the butt seam mark line on the outer plate to obtain a butt seam position line.
5. The push-to-the-head horn mouth surrounding plate welding process as claimed in claim 4, wherein the scribing template is divided into two halves along one of the positioning cross lines.
6. The process of front-to-side push horn mouth fence welding as claimed in claim 1, wherein in said step 300, said opening cut line is inwardly offset from the opening position line by a distance of 45mm to 55mm.
7. The assembling and welding process of the head-side push horn mouth surrounding plate according to claim 1, wherein in the step 600, when the surrounding plate is segmented, the outer plate is welded with the cylinder body, the assembling and welding process comprises the following steps:
before welding, dirt removal needs to be carried out on the welding groove and the base metal within the range of 20mm on two sides of the welding groove;
before formal welding, performing tack welding between base metals, and preheating the base metals;
and finishing formal welding of the base metal according to the welding requirement.
8. The welding process for the fore-and-aft horn mouth surrounding plate according to claim 7, wherein in step 600, the welding sequence of the base metal is as follows:
the coaming segmentation and the outer plate are welded at first, then the coaming segmentation and the barrel are welded, and finally the adjacent coaming segmentation is welded.
9. The assembly welding process of the fore-and-aft horn mouth surrounding plate as claimed in claim 1, wherein the fore-and-aft push of the mail steamer comprises a first fore-and-aft push, a second fore-and-aft push and a third fore-and-aft push at different rib positions;
the first head side push and the second head side push are arranged on the horn mouth surrounding plate in a surrounding mode to form a conical horn mouth;
and the bell mouth coaming at the third head side pushing part is encircled to form an arc bell mouth.
10. The assembling and welding process of the head-side push bell-mouth surrounding plate as claimed in claim 1, wherein the thickness of the cylinder body is 30mm, the thickness of the outer plate is 20mm, the thickness of the bell-mouth surrounding plate is 25mm, and the bell-mouth surrounding plate is made of DH36.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211000290.0A CN115158596B (en) | 2022-08-19 | 2022-08-19 | Assembling and welding process for horn mouth coaming pushed at head side |
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| CN202211000290.0A CN115158596B (en) | 2022-08-19 | 2022-08-19 | Assembling and welding process for horn mouth coaming pushed at head side |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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