CN114179998A - Manufacturing method of stem on large container ship and integral stem segment - Google Patents
Manufacturing method of stem on large container ship and integral stem segment Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 45
- 238000005266 casting Methods 0.000 claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 44
- 239000010959 steel Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000007689 inspection Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000004080 punching Methods 0.000 claims description 27
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 17
- 238000003466 welding Methods 0.000 claims description 14
- 238000009966 trimming Methods 0.000 claims description 6
- 238000003754 machining Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 239000002360 explosive Substances 0.000 claims description 3
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 238000007726 management method Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 230000011218 segmentation Effects 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
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000002699 waste material Substances 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
- B63B73/10—Building or assembling vessels from prefabricated hull blocks, i.e. complete hull cross-sections
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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
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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
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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
Abstract
The invention relates to a manufacturing method of a stem section on a large container ship, wherein the stem section manufacturing process flow is to splice plates by taking a left outer plate as a base surface, position and install a platform plate and a rib plate in sequence, then fold and assemble a lower arc sheet body and a steel casting in sequence, finally integrally form the stem section, and inspect the precision of the incoming cargos by adopting a casting mode for the stem steel casting; the lower arc sheet body is a sheet body member at the lowermost opening of the stem and is used for installation and precision inspection; the outer plate on the left side of the stem serves as a base surface to carry out installation and precision inspection control on a platform plate and a rib plate; taking the finished left outer plate as a base surface, and sequentially performing precision control when the bow steel casting and the DK5A are folded; and also relates to the integral stem section on the large container ship after being manufactured. The method of the invention can quickly position and inspect the precision of the large container ship stem in the manufacturing stage, improve the efficiency of field positioning and the labor intensity and the labor amount of field operating personnel, and shorten the whole manufacturing period.
Description
Technical Field
The invention relates to ship construction, in particular to a manufacturing method of a stem on a large container ship and an integral stem section.
Background
The conventional container ship bulbous bow subsection precision control is not large in structural form and tonnage, the adopted manufacturing process is that an FR rib plate is used as a blank on a normal base surface to manufacture, outer plates are attached in a scattered mode, a bow column generally adopts a bent outer plate or round steel, so that the control difficulty coefficient is not large, and the precision control of the subsection can be controlled within a reasonable range by controlling the perpendicularity of a frame and the rabbet and the line type of the attached outer plates in a scattered mode.
The 22000TEU using dual fuel is one of the most accepted containers in the world at present, and has a larger difficulty coefficient and more difficulty in precision control during first construction. In order to ensure the energy-saving and emission-reducing process of the ship, the linear radian of the bow part of the stem section is smaller than 25 degrees, the conventional outer plate is adopted for processing, the processed linear can not be ensured to be in place, the intensity of the body section can not be ensured by adopting the way of the hot plate after linear processing, therefore, the casting form of the cast steel piece can only be specially adopted, the structural intensity of the section and the integral energy-saving effect of the ship can be ensured, and meanwhile, the horizontal manufacturing is carried out by taking the outer plate on the left side as a base surface.
Therefore, a novel installation and precision inspection method is adopted to meet the requirement of rapid precision of the stem, so that the segmented construction efficiency is improved and the manual loss is reduced.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a manufacturing method of a stem on a large container ship and an integral stem section. The manufacturing method of the stem section meets the requirement of rapid precision of the stem, so that the section construction efficiency is improved and the labor loss is reduced.
In order to achieve the purpose of the invention, the technical scheme provided by the invention patent is as follows:
a manufacturing method of stem subsection on large container ship, the stem subsection structurally includes platform plate part, stem steel casting, lower mouth arc sheet and outer sheet, the platform plate part, stem steel casting and lower mouth arc sheet are connected together, the outer sheet is laid on two sides of the platform plate part, the manufacturing method includes following steps:
firstly, manufacturing a bow steel casting in a pouring mode, checking the precision of the bow steel casting after goods come, and measuring and recording the distance between each platform of the bow steel casting by taking the upper opening of the bow steel casting as a reference, wherein the precision of the distance is +/-2 mm;
secondly, manufacturing a lower arc sheet body according to a drawing, taking the lower arc sheet body as a sheet body member at the lowermost opening of the stem for installation, sequentially installing FR ribs and section steel by taking the platform as a base plane and taking a central line as a reference, and finally assembling an outer plate;
thirdly, mounting a platform plate and a rib plate by taking the outer plate on the left side of the stem as a base surface, manufacturing a jig frame according to the outer plate on the left outer side of the stem, finishing the precision of the jig frame to be +/-2 mm, sequentially hanging plate assembly, paying attention to guarantee the end face degree and the major dimension of the jointed plate during plate jointing, drawing the allowance of the outer plate on the upper opening in advance, making a joint line, and accurately confirming and trimming the allowance of the upper opening of the outer plate by using a total station;
fourthly, taking the finished left outer plate as a base surface, sequentially folding the bow cast steel and the lower opening arc sheet body, and finally scattering and pasting the right outer plate to ensure the end surface overlap ratio and the opening size precision, wherein the opening precision is controlled to be +/-3 mm;
and fifthly, after the integral positioning is finished, detecting a sample punching point by using a total station instrument in the welding process, and adjusting the welding sequence in time according to the measurement data to ensure that the integral precision of the integral stem subsection is controlled within 5mm after the welding is finished.
In the manufacturing method of the stem section on the large container ship, the first step of the precision inspection method after the ship comes from the stem cast steel piece comprises the following steps: firstly, placing a bow steel casting in a roughly leveling state, wherein points a and b are center ocean punching points on the upper and lower port positions of the steel casting, points c and d are sample punching points on the center of the bow of the steel casting, carrying out horizontal detection on the sample punching points a, b, c and d, controlling the precision within 5mm, carrying out readjustment or initiating explosive work when the precision exceeds the standard, and confirming a center line in advance and marking sample punching at the casting stage of the sample punching points a, b, c and d on the bow steel casting; and measuring points a and b by using a total station, wherein a connecting line of the points a and b is an X axis, and checking the straightness of the central point position on each rib position, wherein the straightness is required to be within 5mm, so that the central line of the steel casting is not twisted, and the fire adjustment or the machining is required when the straightness accuracy is out of tolerance.
In the second step, points e and f in the lower arc sheet body are located at the center positions of the outer plates, the centers e and f of the outer plates are confirmed and marked in a sample punching mode in the outer plate processing and forming stage, the end-to-end direction of the hanging coincidence degree of the points e and f is flush with the base plane of the platform during assembly of the outer plates, the half-width direction coincides with the center line, the accuracy control standard is +/-2 mm, and attention needs to be paid to guarantee the coincidence degree accuracy of the points e and f during welding.
In the third step, a jig frame is manufactured according to the shape of the outer plate on the left outer side of the stem, the precision of the jig frame is +/-2 mm after the third step is finished, the precision of a landmark is +/-2 mm, then the operation of splicing plates of hanging plates is sequentially carried out, the end faces of the spliced plates are confirmed according to the landmark of the jig frame by taking the upper opening and the tail part as the reference, the main scale marks of the spliced plates of the outer plates are confirmed, after the third step is finished, the precision of the spliced plates is checked by using a total station, the allowance of the outer plates at the upper opening is drawn in advance, the alignment line is made, and the trimming operation is carried out on the allowance line.
In the fourth step, the upper member of the outer plate body is installed and managed by means of offset, the precision of the upper port platform plate is strictly controlled according to the principle of line assembly, the punching positions of samples g and h are used as the central line positions of the upper port and the lower port of the platform plate, when the lower port arc sheet body is positioned, the upper port g and the h are used as X axes, the position of the point e and the positions of the points g and h are ensured to be 90 degrees, the included angle between the connecting line of gh and ge is 90 degrees, the distance between the points g and e is ensured to be consistent with the theoretical value of the design size, the precision standard is +/-3 mm, when a cast steel piece is positioned, the center sample punching butt joint of a and f is ensured, the linear matching is good, the horizontal control of a, b, c, d, e, f and g in a plane by using a total station instrument, the precision standard is within 5mm, and the distance between b and h is simultaneously checked, the precision standard is +/-2 mm.
In the fifth step, when the outer plates on the right side are scattered and pasted, the contact ratio of the end faces is confirmed by using the vertical line, the opening size is checked according to the size of the opening on the segmentation self-checking sheet, and the opening precision is controlled to be +/-3 mm.
The invention also relates to an integral stem subsection on a large container ship, which comprises a platform plate part, a stem cast steel part, a lower port arc sheet body and an outer plate body, wherein the platform plate part, the stem cast steel part and the lower port arc sheet body are connected together, the outer plate body is laid on the outer sides of two sides of the platform plate part, and the stem subsection is manufactured by the manufacturing method.
Based on the technical scheme, the manufacturing method of the stem section on the large container ship and the manufactured integral stem section have the following beneficial effects in practice:
1. compared with the traditional installation method, the manufacturing method of the stem section on the large container ship saves a large amount of working hours, can basically finish one-time assembly positioning, utilizes the total station to synchronize the rib size interval of the steel casting to the rib position of the outer plate in advance, reduces assembly dislocation and working hour waste, can finish one-time cutting for accurately positioning the allowance of the outer plate, and improves the assembly efficiency of the section.
2. The manufacturing method of the stem section on the large container ship utilizes the sample punch mark knocked in advance to carry out positioning assembly, has small assembly deviation, can be controlled within +/-2 mm, can quickly carry out assembly welding operation, and can reduce the workload of welding and polishing.
Drawings
Fig. 1 is a schematic view showing a state of completion of a stem section on a large container ship according to the present invention.
Fig. 2 is a side view of the stem cast in the stem section of the large container ship of the present invention.
Fig. 3 is a top view of the stem cast in the stem section of the large container ship of the present invention.
Fig. 4 is a schematic structural view of a platform plate member in a stem section of a large container ship according to the present invention.
Fig. 5 is a schematic structural view of a lower opening arc sheet body in a stem section on a large container ship.
Fig. 6 is a schematic structural diagram in the manufacturing process of the stem section on the large container ship.
Detailed Description
The following will explain in detail the manufacturing method of stem section and the manufactured integral stem section on a large container ship according to the present invention with reference to the accompanying drawings and specific embodiments, so as to understand the structure composition and manufacturing process more clearly, but not to limit the scope of the present invention.
Referring to fig. 1, the stem segmented structure of the invention comprises a platform plate part 2, a stem cast steel part 1, a lower opening arc sheet body 3 and an outer plate body 4, wherein the platform plate part 2, the stem cast steel part 1 and the lower opening arc sheet body 3 are connected together, the outer plate body 4 is laid on the outer sides of two sides of the platform plate part 2, namely, the outer plate body 4 is divided into a left outer plate and a right outer plate.
The 22000TEU stem manufacturing process flow is to splice a left outer plate as a base surface, sequentially position and mount a platform plate part 2 and a rib plate, then sequentially fold and assemble a lower opening arc sheet body 3 and a stem cast steel part 1, and finally perform segmented integral forming. The precision control method comprises the following steps: 1) checking the goods incoming precision of the bow steel casting 1; 2) manufacturing and controlling the precision of the lower opening arc sheet body 3 in the segmentation stage; 3) mounting and precision control of the jointed boards and the internal components are carried out by taking the outer plate on the left side of the segmented body as a base surface; 4) and carrying out closure precision control and precision inspection on the bow steel casting 1 and the lower opening arc sheet body 3.
Specifically, the invention relates to a manufacturing method of a stem section on a large container ship, which comprises the following steps:
firstly, manufacturing a bow steel casting 1 by adopting a pouring mode, checking the precision of the bow steel casting 1 after the ship comes, measuring and recording the distance between each platform of the bow steel casting 1 by taking the upper opening of the bow steel casting 1 as a reference, wherein the precision of the distance is +/-2 mm, and the method is shown in figures 2 and 3.
Secondly, manufacturing according to a drawing to finish the lower arc sheet body 3, and mounting the lower arc sheet body 3 as a sheet body member at the bottommost opening of the stem, wherein the manufacturing is to sequentially mount the FR ribs and the section steel by taking a platform as a base plane and a central line as a reference, and finally, assembling the outer plate body 4; the structure of the platform plate component 2 is shown in figure 4, and the lower arc sheet body 3 is shown in figure 5.
And thirdly, mounting a platform plate and a rib plate by taking the outer plate on the left side of the stem as a base surface, manufacturing a jig frame according to the outer plate on the left outer side of the stem, finishing the precision of the jig frame to be +/-2 mm, sequentially hanging plate assembly, paying attention to guarantee the end face degree and the major dimension of the jointed plate during plate jointing, drawing the allowance of the outer plate at the upper opening in advance, making a joint line, and accurately confirming and trimming the allowance at the upper opening of the outer plate by using a total station.
And fourthly, taking the finished left outer plate as a base surface, sequentially folding the bow steel casting 1 and the lower opening arc sheet body 3, and finally scattering the right outer plate in the outer plate body 4 to ensure the end surface overlap ratio and the opening size precision, wherein the opening precision is controlled to be +/-3 mm.
And fifthly, after the integral positioning is finished, detecting a sample punching point by using a total station instrument in the welding process, and adjusting the welding sequence in time according to the measurement data to ensure that the integral precision of the integral stem subsection is controlled within 5mm after the welding is finished.
As shown in fig. 2 and 3, the precision inspection method after the delivery of the bow steel castings in the first step comprises the following steps: firstly, placing a bow steel casting 1 in a roughly leveling state, wherein points a and b are central ocean punching points at the upper and lower port positions of the bow steel casting 1, points c and d are sample punching points on the bow center of the bow steel casting 1, carrying out horizontal detection by the sample punching points a, b, c and d, controlling the precision within 5mm, and carrying out readjustment or initiating explosive work when the precision exceeds the standard. A, b, c and d sample punching points on the bow steel casting 1 confirm a central line in advance in the casting stage and mark the sample punching points, a total station is used for measuring the a and b points, the connecting line of the a and b points is an X axis, the position of the central point on each rib position is checked for straightness, and the straightness is required to be within 5mm so as to ensure that the central line of the steel casting is not distorted, and the requirement of fire adjustment or processing is met when the straightness accuracy is over. Reference numerals 1-17 in fig. 3 indicate the spacing intervals among the platforms on the bow steel casting 1, and the control spacing precision is +/-2 mm.
In the second step, the points e and f in the lower arc sheet body 3 are located at the central position of the outer plate, the central position is confirmed and the outer plate is subjected to sample punching marking in the outer plate machining and forming stage, the end-to-end direction of the contact ratio is hung with the points e and f during the assembly of the outer plate sheet body 4, the end-to-end direction of the contact ratio is parallel and level to the base surface of the platform, the half-width direction is coincident with the central line, the precision control standard is +/-2 mm, and the contact ratio precision of the points e and f is guaranteed by paying attention during welding.
And in the third step, a jig frame is manufactured according to the shape of the outer plate on the left outer side of the stem, the precision of the jig frame is +/-2 mm after completion, the precision of a landmark is +/-2 mm, then the operation of hanging plate splicing is sequentially carried out, the upper opening and the tail part are used as references, the end surface of the spliced plate is confirmed according to the jig frame landmark, the main scale record of the outer plate splicing plate is confirmed, after completion, the precision of the spliced plate is checked by using a total station, the allowance of the upper opening outer plate is drawn in advance, the alignment line is made, and trimming and cutting operation is carried out on the allowance line.
In the fourth step, as shown in fig. 1 and fig. 6, the component installation on the outer plate sheet 4 adopts offset management, the precision of the upper opening platform plate is strictly controlled according to the principle of line assembly, the punching point positions of g and h are taken as the central line positions of the upper opening 5 of the platform plate and the lower opening of the platform plate, when the lower opening arc sheet 3 is positioned, the upper opening g and h are taken as the X axis, the point position of e and the point positions of g and h are ensured to be 90 degrees, the included angle between the connecting lines of g, h and g and e is 90 degrees, the distance between the points of g and e is ensured to be consistent with the theoretical value of the design size, the precision standard is +/-3 mm, when the bow cast steel piece 1 is positioned, the center point punching butt joint of a and f is ensured, the line type matching is good, the level of a, b, c, d, e, f and g is controlled in a plane by using a total station instrument, the precision standard is within 5mm, and the verticality distance between b and h is simultaneously checked, the precision standard is +/-2 mm.
In the fifth step, when the right outer plate in the outer plate body 4 is scattered, the contact degree of the end faces is confirmed by using the line vertical direction, the opening size is checked according to the opening size on the subsection self-checking sheet, and the opening precision is controlled to be +/-3 mm.
The invention also relates to an integral stem subsection on a large container ship, which comprises a stem cast steel part 1, a platform plate part 2, a lower port arc sheet body 3 and an outer plate body 4, wherein the platform plate part 2, the stem cast steel part 1 and the lower port arc sheet body 3 are connected together, the outer plate bodies 4 are paved on the outer sides of two sides of the platform plate part 2, the outer plate bodies 4 are divided into a left outer plate and a right outer plate, and the stem subsection is manufactured by the manufacturing method.
The manufacturing method of the invention can quickly position and inspect the precision of the large container ship stem in the manufacturing stage, can also improve the efficiency of field positioning and the labor intensity and the labor amount of field operating personnel, and shortens the whole manufacturing period.
Claims (7)
1. The manufacturing method of the stem subsection on the large container ship is characterized in that the stem subsection structurally comprises a platform plate part, a stem steel casting, a lower opening arc sheet body and an outer sheet body, the platform plate part, the stem steel casting and the lower opening arc sheet body are connected together, the outer sheet body is laid on the outer sides of the two sides of the platform plate part, and the manufacturing method comprises the following steps:
firstly, manufacturing a bow steel casting in a pouring mode, checking the precision of the bow steel casting after goods come, and measuring and recording the distance between each platform of the bow steel casting by taking the upper opening of the bow steel casting as a reference, wherein the precision of the distance is +/-2 mm;
secondly, manufacturing a lower arc sheet body according to a drawing, taking the lower arc sheet body as a sheet body member at the lowermost opening of the stem for installation, sequentially installing the FR ribs and the section steel by taking the platform as a base surface and the central line as a reference during manufacturing, and finally assembling an outer plate;
thirdly, mounting a platform plate and a rib plate by taking the outer plate on the left side of the stem as a base surface, manufacturing a jig frame according to the outer plate on the left outer side of the stem, finishing the precision of the jig frame to be +/-2 mm, sequentially hanging plate assembly, paying attention to guarantee the end face degree and the major dimension of the jointed plate during plate jointing, drawing the allowance of the outer plate on the upper opening in advance, making a joint line, and accurately confirming and trimming the allowance of the upper opening of the outer plate by using a total station;
fourthly, taking the finished left outer plate as a base surface, sequentially folding the bow cast steel and the lower opening arc sheet body, and finally scattering and pasting the right outer plate to ensure the end surface overlap ratio and the opening size precision, wherein the opening precision is controlled to be +/-3 mm;
and fifthly, after the integral positioning is finished, detecting a sample punching point by using a total station instrument in the welding process, and adjusting the welding sequence in time according to the measurement data to ensure that the integral precision of the integral stem subsection is controlled within 5mm after the welding is finished.
2. The manufacturing method of the stem section on the large container ship according to claim 1, wherein the precision inspection method after the first step of the delivery of the cast steel comprises the following steps: firstly, placing a bow steel casting in a roughly leveling state, wherein points a and b are center ocean punching points on the upper and lower port positions of the steel casting, points c and d are sample punching points on the center of the bow of the steel casting, carrying out horizontal detection on the sample punching points a, b, c and d, controlling the precision within 5mm, carrying out readjustment or initiating explosive work when the precision exceeds the standard, and confirming a center line in advance and marking sample punching at the casting stage of the sample punching points a, b, c and d on the bow steel casting; and measuring points a and b by using a total station, wherein a connecting line of the points a and b is an X axis, and checking the straightness of the central point position on each rib position, wherein the straightness is required to be within 5mm, so that the central line of the steel casting is not twisted, and the fire adjustment or the machining is needed when the straightness accuracy is out of tolerance.
3. The manufacturing method of the stem section on the large container ship according to claim 1, wherein in the second step, points e and f in the lower arc sheet body are located at the center point of the outer plate, the center of the outer plate is marked by punching in the outer plate machining and forming stage, the end-to-end direction of the hanging contact ratio of the points e and f is flush with the base plane of the platform during the assembly of the outer plate, the half-width direction is coincident with the center line, the precision control standard is +/-2 mm, and the contact ratio precision of the nodes e and f needs to be ensured during welding.
4. The method as claimed in claim 1, wherein in the third step, the jig frame is formed according to the shape of the outer left and outer side of the stem, the jig frame accuracy is ± 2mm after completion, the landmark accuracy is ± 2mm, the hanger plate splicing operation is sequentially performed, the end face of the spliced plate is confirmed according to the jig frame landmark on the basis of the upper opening and the tail portion, the major dimension of the outer plate spliced plate is confirmed, the splicing accuracy is verified by a total station after completion, the upper outer plate margin is drawn in advance, the alignment line is formed, and the trimming operation is performed on the margin line.
5. The method of claim 1, wherein in the fourth step, the mounting of the upper member on the outer plate body adopts a step management, the precision of the upper platform plate is strictly controlled according to a line assembly principle, the punching positions of g and h samples are taken as the central line positions of the upper and lower openings of the platform plate, when the lower arc body is positioned, the g and h are taken as the X axes, the e point position and the g and h point position are 90 degrees, the connecting line included angle between gh and ge is 90 degrees, the distance between the g and e points is consistent with the theoretical value of the design size, the precision standard is +/-3 mm, when the cast steel piece is positioned, the center point punching butt joint of a and f is ensured, the line type matching is good, the level of a, b, c, d, e, f and g is controlled in a plane by using a total station instrument, and the precision standard is within 5mm, and meanwhile, the verticality distance between b and h is checked, and the precision is standard +/-2 mm.
6. The method for manufacturing the stem section on the large container ship as claimed in claim 1, wherein in the fifth step, when the right outer plate body is attached in a scattered manner, the contact degree of the end surface is confirmed by using the vertical line, the opening size is checked according to the opening size on the self-inspection sheet of the section, and the opening precision is controlled to be +/-3 mm.
7. The integral stem subsection on a large container ship is characterized in that the integral stem subsection structure comprises a platform plate part, a stem cast steel part, a lower opening arc sheet body and an outer plate body, the platform plate part, the stem cast steel part and the lower opening arc sheet body are connected together, the outer plate body is laid on the outer sides of two sides of the platform plate part, and the stem subsection is manufactured by the method of claims 1-6.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115092348A (en) * | 2022-07-05 | 2022-09-23 | 上海外高桥造船有限公司 | Large-scale cruise ship bow side-pushing segmented construction process |
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| CN115092348B (en) * | 2022-07-05 | 2023-07-04 | 上海外高桥造船有限公司 | Large-scale mail wheel bow side pushing sectional construction process |
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