CN104290869B

CN104290869B - Coating protection method during block assembly

Info

Publication number: CN104290869B
Application number: CN201410559380.2A
Authority: CN
Inventors: 谢永和
Original assignee: Zhejiang Ocean University ZJOU
Current assignee: Zhejiang Ocean University ZJOU
Priority date: 2014-10-21
Filing date: 2014-10-21
Publication date: 2017-01-11
Anticipated expiration: 2034-10-21
Also published as: CN104290869A

Abstract

Disclosed is a coating protection method during block assembly. The coating protection method includes placing a first section and a second section which are assembled according to a blueprint and arranging a welding groove; piling up mud walls beside a welding bead, and isolating places to be welded of the mud walls; paving soft magnetic strips on the outer sides of the mud walls, and arranging fireproof cloth on the soft magnetic strips; arranging a plurality of supports beside the fireproof cloth, and fixing the supports via suckers, so that falling down of the fireproof cloth can be effectively prevented, and damage to ships due to splashing welding spatters is avoided; automatically welding via a welding cart, so that splashing welding spatters can be adsorbed on the mud walls, heat of the spatters can be absorbed, and coating degeneration nearby is avoided; trimming after welding and removing the degenerative coating beside the welding bead by a handheld sand blasting machine; the peripheral coating is unaffected under protection of the mud walls, and better effect of local isolation is achieved.

Description

Coating guard method during a kind of segment folding

Technical field

The present invention relates to coating guard method during a kind of segment folding, be particularly suited for large ship, belong to marine technology Field.

Background technology

Close up abutment joint coating damage and use the power tool polishing St3 level that specifies to GB/T8923-1988 of rust cleaning, or more Good, or be the Sa2 level that specifies of GB/T 8923-1988 time feasible；According to assessment result, following manner is used to carry out coating damage Process.If next-door neighbour's coating damage is less than 25m²Or little scope breakage area summation is not more than full on-deck and amasss 2%(and do not include closing up Abutment joint coating damage) time, then use power tool polishing rust cleaning to GB/T 8923-1988 regulation at the coating damage of full cabin St3 level；If next-door neighbour's coating damage is more than 25m²Or little scope breakage area summation amasss 2%(more than full on-deck and do not includes closing up docking Seam coating damage) time, the most non-closing up at abutment joint coating damage, use sandblasting (ball) rust cleaning to GB/T 8923-1988 regulation Sa2 level.Coating lap-joint surface should be processed into ramped shaped.

After IMO " coating performance standard " regulation body section closes up, coating damage area must not exceed 2%, otherwise need into Row blasting treatment.Thus, not only shipbuilding cost, construction period are brought the biggest impact, and to the coating quality after repairing Also adverse effect is brought.

Fully investigating by closing up demonstration shipyard, coating damage situation is quite serious, especially middle group ratio Low, segmentation is relatively small, breakdown of coating at the segment folding caused during block assembly, is attended by the welding slag breakdown of coating of diversity Repairing difficulty, and be all the most coarse manual repair, quality is uneven, has a strong impact on Bulk coat quality, is a urgent need The problem solved.

Summary of the invention

Coating guard method when it is an object of the invention to provide a kind of segment folding.

The deficiency that when the problem to be solved in the present invention is existing segment folding, breakdown of coating is serious.

For realizing the purpose of the present invention, the technical solution used in the present invention is:

Coating guard method during a kind of segment folding, comprises the following steps:

Together with the first segmentation that needs are first closed up by A and the second segmentation are placed into by drawing, and hold the groove of welding successfully；

B, by the weld seam of the first segmentation and the second segmentation, piles up one mud wall；

C is equipped with soft magnetic stripe outside mud wall, and soft magnetic stripe is provided with fire insulation cloth；

Being provided with multiple support by D fire insulation cloth, support is fixed by sucker, the most effectively prevents fire insulation cloth from falling Collapse；

E carries out automatic welding followed by welding tractor, and the welding slag of splashing will be adsorbed by mud wall and absorb heat, and prevents Neighbouring coating goes bad；

F welds rear trimming and by hand-held sandblasting machine, and the other rotten coating of removing weld seam has no effect on peripheral Coating, after cleaning is good, lays down by heat setting mud wall and fire insulation cloth, and then butt welding taps into row application so that it is have good Sealing property.

Described hand-held sandblasting machine includes baffle plate and connecting rod, and baffle plate is for regulating angle and the scope of sandblasting, and baffle plate is by even The amount of spin of bar regulates angle, to prevent sandblasting to be splashed in intact coating.

Described mud wall cross section is triangular in shape, has good stability, and mud can carry out stable beating by glass rifle Shoot out.

Being provided with groove in described soft magnetic stripe, fire insulation cloth is inserted in groove.

Advantages of the present invention: the coating scope destroyed when using this technique to weld is little, and be neatly conducive to the later stage quick Fill, and repairing quality is reliable, compensate for the quality unstability of existing diversity secondary application so that it is meets IMO and " is coated with Layer performance standard " regulation.

Accompanying drawing explanation

The schematic diagram of coating guard method segment folding welding when Fig. 1 is a kind of segment folding of the present invention；

The structural representation of coating guard method hand-held sandblasting machine when Fig. 2 is a kind of segment folding of the present invention；

In figure: 1, the first segmentation 2, mud wall 3, the 4, second segmentation 5 of fire insulation cloth, support 6, sucker 7, soft magnetic stripe 8, hand-held sandblasting machine 9, baffle plate 10, connecting rod.

Detailed description of the invention

Below in conjunction with the accompanying drawings and embodiment the present invention is further illustrated.

Two middle set of segmentation for ton bulk freighter describe, coating guard method during a kind of segment folding, bag Include following steps:

Together with the first segmentation 1 that needs are first closed up by A and the second segmentation 4 are placed into by drawing, and hold the groove of welding successfully；

B, by the weld seam of the first segmentation 1 and the second segmentation 4, piles up mud wall 2, and twice mud wall 2 will need the ground of welding Side's isolation is got up；

C is equipped with soft magnetic stripe 7 outside mud wall 2, and soft magnetic stripe 7 is provided with fire insulation cloth 3；

D fire insulation cloth 3 is other is provided with multiple support 5, and support 5 is fixed by sucker 6, the most effectively prevents fire insulation cloth 3 collapse, and prevent the welding slag splashed from injuring hull；

E carries out automatic welding followed by welding tractor, and the welding slag of splashing will be adsorbed by mud wall 2 and absorb heat, anti- Coating near only goes bad；

F welds rear trimming and by hand-held sandblasting machine 8, removes the other rotten coating of weld seam due to by mud layer Protection have no effect on periphery coating, reached local cut off good result；After cleaning is good, lay down by heat setting rotten Mud wall 2 and fire insulation cloth 3, owing to the rationally dismounting of its structure is the most convenient；Then butt welding taps into row application so that it is have good close Sealing property.

Described hand-held sandblasting machine 8 includes that baffle plate 9 and connecting rod 10, baffle plate 9, for regulating angle and the scope of sandblasting, reach Good sandblasting scope, baffle plate 9 regulates angle by the amount of spin of connecting rod 10, to prevent sandblasting to be splashed in intact coating, Connecting rod 10 is made up of two transfer levers, can realize freely regulating of multi-angle.

Described mud wall 2 cross section is triangular in shape, has good stability, and mud can carry out stable beating by glass rifle Shoot out.

Being provided with groove in described soft magnetic stripe 7, fire insulation cloth 3 is inserted in groove, convenient installation and dismounting, does not the most damage ship simultaneously Body coating.

By the coating of this technique, during segment folding, breakdown of coating area is little, and next-door neighbour's coating damage is less than 15m^2,More do not have The breakdown of coating of method diversity, compensate for coating quality uneven defect during segment folding, substantially increases body section Coating quality, and use advanced corollary equipment, coating efficiency is higher, greatly reduces the cost of shipbuilding, in nowadays ship city Low market substantially increase the competitiveness of shipyard.

Claims

1. coating guard method during a segment folding, it is characterised in that: comprise the following steps

Together with the first segmentation (1) that needs are first closed up by A and the second segmentation (4) are placed into according to drawing, and hold the slope of welding successfully Mouthful；

B, by the weld seam of the first segmentation (1) and the second segmentation (4), piles up one mud wall (2)；

C is equipped with soft magnetic stripe (7) in mud wall (2) outside, and soft magnetic stripe (7) is provided with fire insulation cloth (3)；

D fire insulation cloth (3) is other is provided with multiple support (5), and support (5) is fixed by sucker (6), the most effectively prevent every Fire cloth (3) collapses；

E carries out automatic welding followed by welding tractor, and the welding slag of splashing will be adsorbed by mud wall (2) and absorb heat, and prevents Neighbouring coating goes bad；

F welds rear trimming and by hand-held sandblasting machine (8), removes the other rotten coating of weld seam and has no effect on peripheral painting Layer；After cleaning is good, laying down by heat setting mud wall (2) and fire insulation cloth (3), then butt welding taps into row application so that it is have Good sealing property.

Coating guard method during a kind of segment folding the most according to claim 1, it is characterised in that: described hand-held sandblasting machine (8) including baffle plate (9) and connecting rod (10), baffle plate (9) is for regulating angle and the scope of sandblasting, and baffle plate (9) passes through connecting rod (10) Amount of spin regulate angle, to prevent sandblasting to be splashed in intact coating.

Coating guard method during a kind of segment folding the most according to claim 1, it is characterised in that: described mud wall (2) Cross section is triangular in shape, has good stability, and mud can carry out stable beating by glass rifle and shoot out.

Coating guard method during a kind of segment folding the most according to claim 1, it is characterised in that: described soft magnetic stripe (7) Inside being provided with groove, fire insulation cloth (3) is inserted in groove.