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Engineering guide

Author:   Time:2012/3/11 16:16:36

Coating construction basic level processing

Basic level processing is the foundation of the construction of the coating:

Construction of very important link, directly affect the coating adhesion, flatness, adornment sex and long service life.

The main method of basic level processing has four kinds: a

1. Use the tool of the more easily to clean the removal of dust, corrosion, and old film, etc.

2. Use the power equipment or chemical ways to clear the tricky matter on, grease, acid and alkali content, etc.

3. Through the chemical immersion, sandblasting and other methods based on process to make it rough, in order to improve adhesion.

4. When the original foundation of color or performance is unfavorable coating, the use of chemical and other ways to improve the color or performance, make its surface

Mission in finishing and can improve the quality of it.

Of the basic level requirements (no matter what the roots, or after treatment of grassroots) :

1. The surface must be solid, no SuSong, pulverization, peeling, the drum, etc.

2. The surface must be clean, no dirt, dust, grease and plaster coating adhesion of the influence of any sundry stains.

3. The surface should be smooth, neatly into line, but also need not too smooth so as not to affect the bond. No larger defects, l l, honeycomb, this hole

Pits and crack, and no obvious fill mark.

4. The surface must be dry. With water emulsion paint; when moisture content should be in 1 0%, with oily coatings requirements; the water

Rate no day in 8%.

5. The pH value should be less than 8.

The wooden handle

Cement materials containing the grassroots are strongly alkaline, must pass at least a month of thoroughly dry, curing (if not thoroughly dry still need

Extend), to FanJian, analyse the salt can be a 1 0% 3% the hydrochloric acid for cleaning, then wash with water. If there are more

Repeat cleaning, but acid in surface residue time should not be more than five minutes, and surface too smooth time can be appropriately extended.

Concrete, cement and cement mortar grassroots processing

Will DingMao protruding into and make the surface antirust processing, the edges and corners of wooden thing with rounded for good, unfavorable use sharp edges, go against coating

Material of hang attached, easy to be premature wear. Wood of the basic level moisture content must not be more than 1 2% general a 1 to 5%. To cause the parts in color

The first blow be bored with child after a 200 available VA alkyd resin coating closed. The materials are adjustable expansion coefficient, difference, will cause the answer

Seam opened, so in order to strengthen filling and bonding material, packing should fill the bottom seams, then put about 50 mm wide perforated tape

Glass or plastic coated fabric (known as gauze), then use to be bored with child scraping the flat.

The paper face plasterboard processing

The quality of the paper face plasterboard and flatness general are better, to basic level surface except under special beyond the requirement, the blow be bored with child fill flat party

Method and treatment can, main is to solve the problem of the joint between slabs processing, the processing of joints is to use AnShiDan special be bored with child will board seam embedded flat,

Then put about 50 m m wide perforated tape or plastic coated glass fabric (known as gauze), then use to be bored with child scraping the flat, but be aware that don''''t

Can plasterboard of higher.

The old coating processing

In the IB film again when finishing, can according to IB film adhesion and the quality of the surface conditions to determine whether need all clear or whether

Part of the cleanup. The film will loose scrape off, exposing the edge of solid, grassroots show enzyme parts, burnish and clean point primer. Fill up

Filling the hole, crack and other rough parts, and then polished surface, except for paint film produced by the dust content, make the surface roughness change, easy

Adhesion. ''''

Construction tools

According to the construction environment and construction requirements can choose appropriate and necessary construction tools including shovel knife, be bored with child I scrape shovel, steel scraper, paint, sand filter screen

The burnish machine, paper YouShua, roller, spray gun, etc.

Inside wall emulsioni paint construction guidelines

Construction conditions: temperature in a 37 ℃ within 50 C. Room temperature remain balanced, should not suddenly change, humidity is not more than 85%, metope have dry.

Moisture content is not more than 8% a 1 to 0%.

Construction method: deal with the grassroots and wind gray metope, sanded gently draw with clean float ash, and then from up to down to use it again enclosed

Primer, dry solid (2 hours) with a time or two times varnish, such as wood or wall body larger crack, can choose strong explosion-proof strong

Force paint.

Rare shih: usually, brush-a 50% 30% JI] water, roller coating can add 5% to 20% of a water, coating can 20% pure

Water, stir and construction.

Note meaning: recoat 2 hours, surface coating construction must be dry curing 7 days, enough to washing clean ability. If want to better effect, besmear brushs should be

In part of the coating, and again from metope in the upper left started by piecewise besmear on down, when the metope with wide th inches tall, should be

Horizontal triangulating besmear to brush, or the opposite. To avoid brush mark, to the ground a fragment of coating finish before did not work to join.

Exterior wall emulsioni paint construction guidelines

Construction conditions: temperature in 5. C a 37 ℃ less than, humidity is not more than 85%, the moisture content 6% a 8%, should avoid the rainy day, wind and corrupt

Dye sex material environment construction.

Construction method

Rare release

Note meaning

Go to the basic level processing, according to the different, choose oil directly or blow be bored with child after make level oil, then apply again alkali

Closed primer. Dry curing (2 hours) besmear above lacquer, wall body larger crack, explosion-proof elastic paint strong selection.

Usually, waterborne coatings don''''t dilute, according to the requirement, can add 30% or painted with right amount of water, roller coating or

Spray paint can add 5% a 1 O % water.

Face paint construction must be dry curing seven days later, will have enough to wash brush ability, if want to better effect, besmear brushs should brush wall body

Brush doors and Windows, YanGou, after the pipe and so on, and should be at the top of the house down by coating, appropriate choice doors and Windows, space, corner, article

Such as the main boundary where do besmear brushs the starting point. These parts easy to cover the starting the formation of trace.

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