Series: Construction of solvent-free epoxy coatings in the ship's freshwater/drinking water tank (V)

22.
remove protection, change the air pipe, coating defect treatment, repair
/
thickening
/
repair spray
1) 2
degree coating to reach a hard dry state after removing the protection changer pipe, pay attention to the wind pipe The masking position needs to be re-positioned, film thickness measurement, coating defects (hanging, accumulation, paint fog, unfilmed, orange peel, leakage, contaminants, etc.) check and mark, take care not to mark directly on the surface of the coating with a marker pen, tape paper on the need to mark the site, and record on the tape. After all this is done, the whole cabin is cleaned;
2)
repaired, thickened and sprayed. Repair and thickening before the repair spray, repair spray should not produce too much paint fog around the repair spray, along the weld to repair the spray or repair the spray around the intact coating to make the necessary blocking;
3)
the floor area is easily contaminated, and sometimes for the sake of appearance, the floor area will require sandpaper to be sprayed again at the end
4)
repair coating hard dry and continue to check for low film thickness and other coating defects
China
. According to personal experience, a check can certainly not find all the problems, only multiple double checks, the problem will only be less and less.
5)
The completion shall be reported for inspection and rectification shall be carried out in response to the questions raised. Personally, as long as the strict procedures to work, the result will naturally be water into the canal.
photo
51
: Coating defects before paint repair
Photo
52
: Mark Coating Defects
Photo
53
: Mark Coating Defects
Photo
54

: Treatment of coating defects
Photo
55
: Paint patching, dosing scale paint
Photo
56
: Paint patching, dosing scale paint
23.
Remove scaffolding, floor polishing coating
1)
coating completely cured (generally
23
degrees Celsius
7
days) to protect the floor, remove scaffolding, pay attention to scaffolding removal process do not destroy the coating, light, buckle do not throw to the floor, each layer of scaffolding should be inspected and repaired in a timely manner;
2)
the scaffolding, polish the frame, and pull the other intact coating. Due to the floor position personnel equipment back and forth, there will inevitably be pollution, damage and other problems, so the vast majority of shipowners will require the floor other intact coating power tools to re-pull the hair. Small editor think that according to the actual situation, if the appearance of the floor coating is too ugly to need to be pulled, some of the comparative rules of small fresh water compartment seats are less, can be removed before the repair of the overall sandpaper when the overall sandpaper to do a clean spray when the overall spray, after removing the scaffolding only need to repair the position of the shelf, the same will have a very good effect;
3)
For the iron-seeing area, the sand tray after grinding requires the mushroom head to be polished again to obtain a certain roughness;
4)
the floor when pulling hair requires heavy hair, a simple inspection method to put the flashlight flat on the floor, to see if the gloss of the coating surface can see whether the hair is in place, but also by hand directly shooting the coating surface, by checking whether the backlight is in place;
5)
clean the whole cabin after the grinding and pulling, be sure to use a vacuum cleaner, otherwise it is difficult to clean in place
6)
First use a brush in the iron area for
1
Degree paint (red) repair, generally at least twice to achieve the specified film thickness, and finally with
2
degree paint (white) to
1
degrees paint site repair, not required too thick, the purpose of this is to avoid spraying can not cover the primer, because the overall film thickness has basically been satisfied,
2
degree paint does not require spray too thick;
7)
repair the primer hard and dry after the necessary treatment to thoroughly clean again, spray second degree paint;
8)
second degree paint hard dry and then carry out the necessary inspection and repair, floor completion inspection, continuous ventilation until complete curing.
24.
Temporary hole sealing plate, polishing coating
1)
to protect the floor, sealing board to ensure that no contamination and damage to the surrounding coating;
2)
to the sealing plate for polishing, around the grinding out of the bee, mushroom head hit a certain roughness, cleaning;
3)
in accordance with the procedures to repair the paint, in order to a good appearance, generally
1
degree paint requirements brush construction, the final
2
degree paint spray construction, depending on the situation;
4)
to carry out the final report.
photo
57
: Temporary manhole grinding repair
Photo
58
: Temporary manhole grinding repair
Photo
59
: State after completion Photo
60
: State after completion
Photo
61
: Status after completion
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62
: Status after completion
Photo
63
: Status after completion
Photo
64
: Status after completion