CN110802340A - Production and manufacturing process of cargo ship hatch cover folding opening - Google Patents
Production and manufacturing process of cargo ship hatch cover folding opening Download PDFInfo
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- CN110802340A CN110802340A CN201911112727.8A CN201911112727A CN110802340A CN 110802340 A CN110802340 A CN 110802340A CN 201911112727 A CN201911112727 A CN 201911112727A CN 110802340 A CN110802340 A CN 110802340A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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Abstract
The invention discloses a production and manufacturing process of a closure opening of a cargo ship hatch cover, which comprehensively applies methods of vertically dividing, hanging plumb lines, guy wires and the like to determine closure and assembly positioning datum lines, and reasonably plans the assembly sequence of small groups, middle groups and general assemblies of all parts to achieve the purposes of avoiding overhead welding, simplifying the assembly to the general assembly closure in the hatch cover, turning over for 1 time after completion of inspection, ensuring that a product meets the requirements of closure matching precision of higher straightness, flatness and the like, avoiding the welding difficulty of overhead welding, reducing the safety risk of turning over the hatch cover and reducing the manufacturing cost. The invention is a new and suitable production and manufacturing process, which is used for ensuring the high precision and high quality requirements of finished products and simultaneously improving the working efficiency of production and manufacturing.
Description
Technical Field
The invention relates to a manufacturing process of a ship body hatch cover, in particular to a manufacturing process for a hatch cover folding opening of a helicopter capable of stopping a novel 82000-ton bulk cargo ship.
Background
At present, a hatch cover of a bulk cargo ship for ocean transportation is basically in a hanging-off type switch cabin mode through a crane on the ship or a wharf, the hatch cover of the helicopter which can be stopped by the 82000-ton bulk cargo ship in the novel design still adopts a traditional side sliding type switch mode, but the hatch cover needs to stop the helicopter. The cabin has special structural design and complex structure, uses thickened plates, has larger welding deformation, and is greatly improved and optimized in the design of watertight rubber, a launder and the like of a closure opening. Generally, the traditional closure opening structure is that stainless steel flat steel is welded on the flat steel and is obliquely installed, and double-layer flat steel is installed in a staggered mode, so that the structure is complex, and field assembly is difficult. The novel folding opening is formed by welding stainless steel round steel on flat steel and horizontally installing the stainless steel round steel, the same watertight effect can be achieved, the material purchasing cost is greatly reduced, and meanwhile, the field installation manufacturing cost is greatly saved. Since the rubber product itself is also a wearing part and needs to be replaced regularly, we still use the ordinary cat face rubber. Because cat face rubber manufacturer is more, and the price is more preferential, easily purchase, and is with low costs, and it is also convenient to install and change, and this also gives the shipowner in the use in boats and ships later stage, and the use cost of accessory change maintenance also reduces by a wide margin. Thus, the hatch cover of this new design is very promising for bulk carrier applications.
After the watertight structure design of the horizontal installation of the compression flat steel is adopted, the processing and manufacturing precision of the steel structure matched with the closing opening of the hatch cover is higher than that of the traditional design. Therefore, a production and manufacturing process for the novel folding opening structure design is urgently needed to be developed, and the work efficiency of production and manufacturing can be improved while the high-precision and high-quality requirements of finished products are ensured. .
Disclosure of Invention
The invention aims to overcome the manufacturing difficulties, and provides a production and manufacturing process for a closure opening of a cargo ship hatch cover, which simplifies assembly and final assembly closure in the hatch cover, ensures the requirements of closure fit precision of straightness, flatness and the like, avoids the welding difficulty of overhead welding, reduces the safety risk of turnover of the hatch cover, and reduces the manufacturing cost.
The invention discloses a production and manufacturing process of a cargo ship hatch cover folding opening, which comprises the following steps:
A) preparation work:
a) assembling and welding an L beam at a small assembly folding opening:
1) in the P cover, the small assembly of the L01 beam at the folding opening is realized by welding the water channel angle steel 1 and the water retaining angle steel 2 at the side of the folding opening, the rubber pressing strip of the hatch cover plays the important roles of water resistance, sealing, sound insulation, dust prevention and energy conservation in the folding process of the hatch cover and the hatch cover, and in order to ensure the fastening of the rubber strip and the sectional material, the sectional structure size of the rubber strip must be matched with the hatch cover, so the precision tolerance of installing the sealing rubber 3 between the water channel angle steel 1 and the water retaining angle steel 2 is emphatically ensuredmm；
2) In the S cover, a small assembly of an L01 beam at a folding opening is adopted, and a runner angle steel 1 is welded on the side of the folding opening;
3) the angle steel installed at the closing opening of the P cover/S cover comprises a runner angle steel 1 and a water retaining angle steel 2, and the installation camber of each angle steel is required to be ensured according to the camber requirement designed by a drawing;
4) the small assembly manufacturing of the L01 beam at the closing opening of the P cover/S cover comprises the following specific steps: l-beam panel 4 splicing welding correction and ejection center line and face web assembly line → L-beam web 5 splicing → L-beam web 5 fire leveling and camber setting → L-beam web 5 uses steel strip marking with the center line of the web length direction as the benchmark → L-beam web 5 upper elbow plate welding → L-beam web 5 upper jig welding with the center line as the benchmark;
5) after the welding and the flame correction of the beam of the P cover/S cover group L01 are finished, the report and check of the size is carried out according to the figure 1, if the out-of-tolerance needs to be corrected, the correction is carried out until the out-of-tolerance is qualified;
b) assembling and welding the middle group of single-piece hatch covers:
the manufacturing process flow is as follows by adopting a reverse manufacturing method: the deck lid top plate 8 is paved → welded → top plate marking → section bar welding → T beam assembling → L beam assembling → side plate assembling → end plate assembling → reinforced elbow plate 7 assembling → pre-welded trial → welded trial;
B) assembling and welding a closure opening after middle assembling and welding:
(1) the P cover 4 is still supported on the horizontal jig frame, and after the parts of the anti-collision blocks 9 and the rubber groove baffle plates 10 on the sides of the fore and aft top plates of the closure openings are arranged and positioned according to the positioning dimension required by the drawing, the parts are welded and tested to be qualified, and the QC is reported as shown in figure 2;
(2) the S cover is also kept supported on the horizontal jig frame, the panel side anti-collision block 6 is positioned according to the positioning size required by the drawing, and then the QC is welded and tested to be qualified, as shown in the figure 3(a), the figure 3(b) and the figure 3 (c);
(3) after the procedure of combining the openings in the P/S cover is completed, turning over the assembly jig frame, and performing one-time fire work to correct the flatness of the hatch cover for the procedure of assembling and folding;
C) assembling and welding a closure of the hatch cover assembly:
a) the two P covers/S covers are assembled and closed for positioning:
firstly, taking the rubber groove horizontal plane HZP as a reference, ensuring that the hatchcovers are on the same horizontal plane when the P cover and the S cover are combined, and simultaneously, when the hatchcovers are combined, pulling the distance between two adjacent hatchcovers apart by 500mm for ensuring the installation and welding operation of subsequent parts; secondly, taking the closing opening stop block as a reference, comprehensively applying methods such as vertical equal division, plumb line hanging, steel wire tightening and the like to determine a closing positioning reference line and a CVP line which are synchronously released, and turning to the next procedure after the final assembly QC is checked to be qualified as shown in FIG. 4;
b) according to the schematic of fig. 4, after the two-piece hatch cover P cover/S cover general assembly is positioned and qualified, adjusting and installing part of parts to be installed of a general assembly folding opening in accordance with general assembly tolerance; welding and straightening the closure part after the assembly is finished according to the positioning size and tolerance requirements of the drawing, reporting that the final assembly QC is qualified, and turning to the next procedure;
(1) the P-lid mounting part is schematically shown in fig. 5(a), 5(b) and 5(c),
(2) the S cover mounting part is schematically shown, as shown in FIG. 6(a), FIG. 6(b) and FIG. 6(c),
the installation of the most important folding opening pressing strip is included in the S cover installation part! The S cover pressing strip is matched with the rubber strip arranged in the P cover rubber groove, so that the sealing effect is achieved when the hatch cover and the hatch cover are closed, the hatch cover is not easy to open, and the important products with the effects of shock absorption, water resistance, sound insulation, heat insulation, dust prevention, fixation and the like are achieved; therefore, when the stainless steel pressing strip at the folding opening is installed, a steel wire needs to be pulled for installation, the straightness of the stainless steel pressing strip is guaranteed to be +/-3 mm, the gap between the stainless steel pressing strip and the rubber groove is guaranteed to be 37 +/-3 mm, after assembly, the stainless steel pressing strip and the rubber groove need to be subjected to final assembly QC inspection and confirmation, welding can be carried out, after welding is completed, the gap between the stainless steel rubber pressing strip and the rubber groove needs to be measured every 500mm, and records are made so as to measure the rubber compression amount during installation on a ship, as shown in FIG. 7;
c) the folding port parts are welded and straightened after being assembled according to the positioning size and tolerance requirements of the drawing,
d) and after the final assembly QC is checked to be qualified, the next procedure is carried out.
The invention is further improved in that: in the assembling and welding step of the middle group of single hatchcovers, when the top plate 8 of the hatchcover is paved: the welding plate is placed in a matched mode according to a splicing plate drawing, the large diagonal size and the flatness of the plate seam edge are noticed, all arc striking and extinguishing plates are installed after splicing, and semi-automatic submerged arc welding is adopted.
The invention is further improved in that: when the hatch top plate 8 is marked: an assembly line of the L-shaped beam at the side of the folding opening is determined and used as a reference, a cross reference line is formed based on the assembly line, structural lines and allowance around the assembly line are drawn by a steel belt, the distance between a plate seam and a structure is noticed, all the structural lines are drawn one by one according to the sequence of a longitudinal beam, a transverse beam and a longitudinal beam and a node, the L-shaped beam needs to be stretched into double lines according to the thickness of a web plate, and the subsequent T-shaped beam is convenient to position accurately.
The invention is further improved in that: when the T beam is assembled: the T-beam positioning needs to take into account the in-place conditions of two ends and an L-beam positioning line, the L-beam is inserted for positioning, the central line corresponds to the corresponding end plate, the two ends and the end plate can be positioned, borrow processing can be performed if a small amount of deviation exists, the positioning of the end plate takes the central line of the position of the stop block as a reference, and meanwhile, the closing opening L01 beam and the side plate are taken into account, and borrow processing of the two ends is performed.
The invention is further improved in that: in the middle group, a plurality of welding staff are required to be uniformly distributed (all parts assembled in the middle group comprise L beams, T beams, semi-finished products of various leading groups 11 and various small parts) which are manufactured by various groups, and the welding sequence is as follows: from the middle to the periphery, fillet welding is carried out vertically and then fillet welding is carried out horizontally.
Compared with the prior art, the invention has the following advantages:
the method comprehensively applies the methods of vertically dividing equally, hanging plumb lines, steel wires and the like to determine the folding and assembling positioning datum lines, and reasonably plans the assembling sequence of small groups, middle groups and general assemblies of all parts, thereby not only avoiding overhead welding, but also simplifying the folding from the middle group to the general assembly of the hatch cover, and turning over for 1 time after completion of inspection, ensuring that the product meets the requirements of higher folding matching precision of straightness, flatness and the like, avoiding the welding difficulty of overhead welding, reducing the safety risk of turning over the hatch cover, and reducing the manufacturing cost.
Description of the drawings:
fig. 1(a) and 1(b) are assembled precision measurement tables of a small beam of a folding opening L01;
FIG. 2 is a schematic view of the assembled welding of the assembled closing port in the P cover;
FIG. 3(a), FIG. 3(b) and FIG. 3(c) are schematic diagrams of the assembled welding of the gathering port in the S-shaped cover;
FIG. 4 is a schematic view of the MVP, CVP line vertical bisector positioning of the hatch;
FIG. 5(a), FIG. 5(b) and FIG. 5(c) are schematic views of the assembly welding of the P cover assembly folding opening;
FIG. 6(a), FIG. 6(b) and FIG. 6(c) are schematic views of the assembly welding of the S cover assembly folding opening;
FIG. 7 is a schematic diagram illustrating the gap inspection between a stainless steel rubber pressing strip and a rubber groove at a hatch cover closing opening;
FIG. 8 is a schematic diagram of a section of a closure and a main process route.
Reference numbers in the figures:
the structure comprises 1-runner channel angle steel, 2-water retaining angle steel, 3-sealing rubber, 4-L beam panels, 5-L beam webs, 6-panel side anti-collision blocks, 7-reinforcing brackets, 8-cabin cover top plates, 9-top plate side anti-collision blocks, 10-rubber channel stop blocks and 11-leading groups.
The specific implementation mode is as follows:
for the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
Fig. 1-8 show a cargo ship cang-flap closure manufacturing process, which comprises the following steps:
A) preparation work:
a) assembling and welding of L-shaped beam at small assembly folding opening
1) In the P cover, a small assembly of an L01 beam at a closure opening is adopted, and a runner angle steel 1 and a water retaining angle steel 2 are welded on the side of the closure opening; the hatch cover rubber pressing strip plays important roles of water resistance, sealing, sound insulation, dust prevention and energy conservation in the folding process of the hatch cover and the hatch cover, and in order to ensure the fastening of the adhesive tape and the sectional material, the section structure size of the adhesive tape must be matched with the hatch cover, so that the precision tolerance of the installation of the sealing rubber 3 between the water channel angle steel 1 and the water retaining angle steel 2 is emphatically ensured
mm。
2) In the S cover, a small assembly of an L01 beam at a folding opening is adopted, and a runner angle steel 1 is welded on the side of the folding opening;
3) the angle steel (comprising water channel angle steel 1 and water retaining angle steel 2) installed at the P/S cover closing opening is required to ensure the installation camber of each angle steel according to the camber requirement designed by a drawing;
4) the small assembly of the L01 beam at the closing opening of the P/S cover is manufactured by following the following method: l-beam panel 4 splicing welding correction and ejection center line and face web assembly line → L-beam web 5 splicing → L-beam web 5 fire leveling and camber setting → L-beam web 5 uses steel strip marking with the center line of the web length direction as the benchmark → L-beam web 5 upper elbow plate welding → L-beam face web upper jig welding with the center line as the benchmark;
5) after the welding and the flame correction of the P/S cover group L01 beam are finished, carrying out the inspection and the size report according to the figures 1(a) and 1(b), and if the error is out, correcting until the error is qualified;
b) assembling and welding middle-group single-piece hatch cover
The method is characterized by comprising the following steps of (1) manufacturing by adopting a reverse manufacturing method according to the following process flow and reporting that the product is qualified: the deck lid top plate 8 is paved → welded → top plate marking → section bar welding → T beam assembling → L beam assembling → side plate assembling → end plate assembling → other reinforcing elbow plate 7 assembling → pre-welded trial → welded trial;
(1) attention is paid to 8 jointed boards on the top plate of the cabin cover: checking in according to a jigsaw drawing, paying attention to the large diagonal size and the flatness of the plate seam edges, and installing all arc striking and extinguishing plates after splicing; semi-automatic submerged arc welding is adopted;
(2) hatch cover top panel 8 is marked with a line to note: firstly, determining an assembly line of an L beam at the side of a closure opening, taking the assembly line as a reference, drawing a cross reference line based on the reference, drawing a structural line and allowance around by using a steel belt, paying attention to the distance between a plate seam and a structure, drawing all the structural lines one by one according to the sequence of nodes after longitudinal beams and transverse beams, wherein the L beam needs to be bounced along a double line according to the thickness of a web plate, and the subsequent T beam is convenient to be accurately positioned;
(3) the middle group of the main beam is positioned and noted: the positioning of the T-beam needs to be carried out in consideration of the in-place conditions of two ends and an L-beam positioning line, the L-beam is inserted for positioning, and the positioning conditions of the two ends and an end plate are considered in consideration of the central line corresponding to the L-beam, so that the T-beam can be used for borrowing treatment if a small amount of deviation exists. The positioning of the end plate takes the central line of the position of the stop block as a reference, and simultaneously considers the closing opening L01 beam and the side plate, and the two ends are subjected to borrowing treatment;
(4) in the middle group, a plurality of welding staff are required to be uniformly distributed (all parts assembled in the middle group comprise L beams, T beams, semi-finished products of various leading groups 11 and various small parts) which are manufactured by various groups, and the welding sequence is as follows: from the middle to the periphery, fillet welding is carried out vertically and then fillet welding is carried out horizontally.
B) Assembling and welding a closure opening after middle assembling and welding:
(1) the P cover still keeps supporting on the horizontal jig frame, after installing and positioning the parts of the anti-collision block 9 and the rubber groove baffle 10 on the fore-aft top plate side of the closure opening according to the positioning dimension required by the drawing, welding and reporting QC to be qualified as shown in figure 2;
(2) the S cover is also kept supported on the horizontal jig frame, the panel side anti-collision block 6 is positioned according to the positioning size required by the drawing, and then the QC is welded and tested to be qualified, as shown in the figure 3(a), the figure 3(b) and the figure 3 (c);
(3) after the procedure of combining the openings in the P/S cover is completed, turning over the assembly jig frame, and performing one-time fire work to correct the flatness of the hatch cover for the procedure of assembling and folding;
C) assembling and welding a closure of the hatch cover assembly:
a) P/S two-piece hatch cover general assembly folding positioning
Firstly, taking the rubber groove horizontal plane HZP as a reference to ensure that the hatch covers are on the same horizontal plane when the P/S cover is matched; meanwhile, when the hatches are combined, the distance between every two adjacent hatches is 500mm, so that the subsequent installation and welding operation of parts can be guaranteed; secondly, taking the closing opening stop block as a reference, comprehensively applying methods such as vertical equal division, plumb line hanging, steel wire tightening and the like to determine a closing positioning reference line and a CVP line which are synchronously released, as shown in figure 4, reporting that the final assembly QC is qualified, and turning to the next procedure;
b) as shown in fig. 4, after the P/S two-piece hatch cover assembly is positioned and tested to be qualified, the part of the assembly opening of the assembly is adjusted and installed according to the assembly tolerance, the assembly opening part is welded and straightened according to the positioning size and tolerance of the drawing, and after the assembly QC is tested to be qualified, the next procedure is carried out,
(1) the P-lid mounting part is schematically shown in fig. 5(a), 5(b) and 5(c),
(2) the S cover mounting part is schematically shown, as shown in FIG. 6(a), FIG. 6(b) and FIG. 6(c),
the S cover mounting part comprises the most important mounting of a closure opening pressing strip, the S cover pressing strip is matched with a rubber strip mounted in a P cover rubber groove, and the S cover pressing strip plays a role in sealing when the hatch cover and the hatch cover are closed, so that the hatch cover is not easy to open and plays an important role in shock absorption, water prevention, sound insulation, heat insulation, dust prevention, fixation and the like; therefore, when the stainless steel pressing strip at the folding opening is installed, a steel wire needs to be pulled for installation, the straightness of the stainless steel pressing strip is guaranteed to be +/-3 mm, the gap between the stainless steel pressing strip and the rubber groove is guaranteed to be 37 +/-3 mm, after assembly, the stainless steel pressing strip and the rubber groove need to be subjected to final assembly QC inspection and confirmation, welding can be carried out, after welding is completed, the gap between the stainless steel rubber pressing strip and the rubber groove needs to be measured every 500mm, and records are made so as to measure the rubber compression amount during shipment installation (as shown in FIG. 7);
a) welding and straightening the folding part after the assembly is finished according to the positioning size and tolerance requirements of the drawing;
b) and after the final assembly QC is checked to be qualified, the next procedure is carried out.
The invention discloses a novel suitable production manufacturing process, which comprehensively applies methods of vertically dividing, hanging plumb lines, steel wire binding and the like to determine a folding and assembling positioning datum line, and reasonably plans the assembling sequence of small groups, middle groups and general assemblies of all parts to achieve the purposes of avoiding overhead welding, simplifying the folding from the middle group to the general assembly of a cabin cover, and turning over for 1 time after completion of inspection, and also can ensure that a product meets the requirements of higher folding matching precision of straightness, flatness and the like, avoid the welding difficulty of overhead welding, reduce the safety risk of overhead welding and reduce the manufacturing cost.
Claims (5)
1. A production and manufacturing process of a cargo ship hatch cover folding opening is characterized by comprising the following steps: the method comprises the following steps:
A) preparation work:
assembling and welding an L beam at a small assembly folding opening:
in the P cover, the small assembly of the L01 beam at the folding opening is carried out, the flow channel angle steel and the water retaining angle steel are welded on the side of the folding opening, the rubber pressing strip of the hatch cover is arranged in the folding process of the hatch cover and the hatch cover, in order to ensure the fastening of the rubber strip and the section bar, the section structure size of the rubber strip must be matched with that of the hatch cover, and the precision tolerance of the installation of the sealing rubber between the flow channel angle steel and the water retaining angle steel is ensured
mm；
In the S cover, a small assembly of an L01 beam at a folding opening is adopted, and a runner angle steel 1 is welded on the side of the folding opening;
the angle steel installed at the closing opening of the P/S cover comprises a runner angle steel and a water retaining angle steel, and the installation camber of each angle steel needs to be ensured;
the small assembly manufacturing of the L01 beam at the P/S cover closing opening comprises the following specific steps: l-beam panel splicing plate welding correction and popping up a central line and a face web assembly line → L-beam web splicing plate → L-beam web fire leveling and camber setting → L-beam web using steel strip marking with the central line of the web length direction as a reference → L-beam web upper elbow plate assembly welding → L-beam web upper jig assembly welding with the central line as a reference;
after the welding and the fire correction of the P/S cover group L01 beam are finished, the size is reported and checked, if the tolerance is out of tolerance, the correction is needed until the tolerance is qualified;
assembling and welding the middle group of single-piece hatch covers:
the manufacturing process flow is as follows by adopting a reverse manufacturing method: deck boards of a cabin cover top plate → welding → top plate marking → section material welding → T beam assembling → L beam assembling → side plate assembling → end plate assembling → reinforced elbow plate assembling → pre-welding trial → welding trial;
B) assembling and welding a closure opening after middle assembling and welding:
(1) the P cover still keeps supporting on the horizontal jig frame, after installing and positioning the anti-collision block and rubber groove baffle part on the top plate side of the fore and aft part of the closure opening, welding and checking QC to be qualified;
(2) the S cover is also kept supported on the horizontal jig frame, and after the panel side anti-collision block is positioned, the QC is welded and checked to be qualified;
(3) after the procedure of combining the openings in the P/S cover is completed, turning over the assembly jig frame, and performing one-time fire work to correct the flatness of the hatch cover for the procedure of assembling and folding;
C) assembling and welding a closure of the hatch cover assembly:
a) assembling and folding the P/S two hatch covers:
firstly, taking the rubber groove horizontal plane HZP as a reference, ensuring that the hatchcovers are on the same horizontal plane when the P/S covers are combined, and simultaneously, when the hatchcovers are combined, pulling the distance between two adjacent hatchcovers apart by 500mm for ensuring the subsequent installation and welding operation of parts; secondly, taking a closure stop block as a reference, comprehensively applying methods such as vertical equal division, plumb line hanging, steel wire binding and the like to determine a closure positioning reference line and a CVP line which are synchronously released, reporting that the final assembly QC is qualified, and turning to the next procedure;
b) after the P/S two-piece hatch cover general assembly is positioned and qualified, adjusting and installing part of parts to be installed of a general assembly folding opening in a matching way with general assembly tolerance; welding and straightening the closure part after the assembly is finished, reporting that the final assembly QC is qualified, and turning to the next procedure;
c) the folding port parts are welded and straightened after being assembled according to the positioning size and tolerance requirements of the drawing,
d) and after the final assembly QC is checked to be qualified, the next procedure is carried out.
2. The manufacturing process for the closing opening of the cargo ship hatch cover according to claim 1, wherein: in the assembling and welding steps of the middle group of single hatchcovers, when the top plate of the hatchcover is paved: the welding plate is placed in a matched mode according to a splicing plate drawing, the large diagonal size and the flatness of the plate seam edge are noticed, all arc striking and extinguishing plates are installed after splicing, and semi-automatic submerged arc welding is adopted.
3. The manufacturing process for the closing opening of the cargo ship hatch cover according to claim 1, wherein: when the hatch cover top plate is scribed: an assembly line of the L-shaped beam at the side of the folding opening is determined and used as a reference, a cross reference line is formed based on the assembly line, structural lines and allowance around the assembly line are drawn by a steel belt, the distance between a plate seam and a structure is noticed, all the structural lines are drawn one by one according to the sequence of a longitudinal beam, a transverse beam and a longitudinal beam and a node, the L-shaped beam needs to be stretched into double lines according to the thickness of a web plate, and the subsequent T-shaped beam is convenient to position accurately.
4. The manufacturing process for the closing opening of the cargo ship hatch cover according to claim 1, wherein: when the T beam is assembled: the T-beam positioning needs to take into account the in-place conditions of two ends and an L-beam positioning line, the L-beam is inserted for positioning, the central line corresponds to the corresponding end plate, the two ends and the end plate can be positioned, borrow processing can be performed if a small amount of deviation exists, the positioning of the end plate takes the central line of the position of the stop block as a reference, and meanwhile, the closing opening L01 beam and the side plate are taken into account, and borrow processing of the two ends is performed.
5. The manufacturing process for the closing opening of the cargo ship hatch cover according to claim 1, wherein: the welding of the middle group needs to be noted: a plurality of welding personnel should be symmetrically and uniformly distributed, and the welding sequence is as follows: from the middle to the periphery, fillet welding is carried out vertically and then fillet welding is carried out horizontally.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111889956A (en) * | 2020-06-23 | 2020-11-06 | 广州文冲船舶修造有限公司 | Large-area replacing and repairing process for top plate of cabin cover |
| CN112977751A (en) * | 2021-03-26 | 2021-06-18 | 广州文冲船厂有限责任公司 | Jointed board marking method |
| CN113859433A (en) * | 2021-10-22 | 2021-12-31 | 广州文冲船厂有限责任公司 | Container ship hatch cover separation joint seal structure |
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| CN108927591A (en) * | 2018-08-15 | 2018-12-04 | 江苏润邦重工股份有限公司 | Structure welding technique is organized in a kind of container hatch cover of ship |
| CN109591956A (en) * | 2018-11-16 | 2019-04-09 | 天津市宝洪源机械制造有限公司 | A kind of container ship closes up the manufacturing process of mouth with corrosion-resistant hatch board |
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| CN107252987A (en) * | 2017-07-19 | 2017-10-17 | 江苏润邦重工股份有限公司 | A kind of 3600TEU containers hatch cover of ship closes up the manufacturing process of mouth |
| CN108927591A (en) * | 2018-08-15 | 2018-12-04 | 江苏润邦重工股份有限公司 | Structure welding technique is organized in a kind of container hatch cover of ship |
| CN109591956A (en) * | 2018-11-16 | 2019-04-09 | 天津市宝洪源机械制造有限公司 | A kind of container ship closes up the manufacturing process of mouth with corrosion-resistant hatch board |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111889956A (en) * | 2020-06-23 | 2020-11-06 | 广州文冲船舶修造有限公司 | Large-area replacing and repairing process for top plate of cabin cover |
| CN112977751A (en) * | 2021-03-26 | 2021-06-18 | 广州文冲船厂有限责任公司 | Jointed board marking method |
| CN113859433A (en) * | 2021-10-22 | 2021-12-31 | 广州文冲船厂有限责任公司 | Container ship hatch cover separation joint seal structure |
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