A, paint: three times on the substrate to play primer, paint four times, each time the paint, are sent to clean room temperature barn, baking.
B. Spray paint: Grind woolen cloth on the substrate, spray paint on it, and air dry naturally.
Second, the film.
Practice: touch the edges and corners of the paint door, whether smooth, credential; observe the color of the corners, whether the same color with the door.
Contrast: A, paint: smooth edges and corners, the same color. Prove film uniform, full color.
B, spray paint: rough edges and corners, the color is lighter than the door. Prove that the film is not uniform and the color is not full:
Third, lines.
Practice: Control the light and see if there is orange peel on the surface of the paint door.
Contrast: A. Baking paint: The surface of the door is smooth, with no grain and orange peel.
B. Spray paint: There are lines on the surface of the door, not smooth, orange peel phenomenon.
Fourth, the surface.
Practice: Touch the surface of the door to paint, if there are dust particles, bubbles.
Contrast: A, paint: The door surface is smooth and smooth. $_Gwo2
B, spray paint: Particles on the door surface, not smooth, touch a sense of strangeness.
Fifth, wear.
Practice: Hit with a hard object.
Contrast: A, baking paint: No abnormalities, no damage to the paint film.
B, spray paint: cracks, severe paint film off, off the white skin.
Baking room structure and working principle
Paint room structure
The entire paint room is an assembled structure. The room body adopts the inserting and inserting heat-insulation sprayed wallboard, which has good sealing and heat preservation performance. The side of the room body is equipped with working doors to facilitate the entry and exit of the staff; the aluminum alloy edging door has a observation window at the center of the door and can be observed at any time in the room. dynamic. Low-noise, high-air volume fans are used to ensure the perfection of the painting effect; high-quality stainless steel heat exchangers have high heat exchange efficiency and long service life.
Paint room working principle
The paint room is generally used for spraying and baking paint. Therefore, the most accurate description of the paint room should be "spray paint room."
When painting, the outside air passes through the primary filter and is sent to the roof by the fan, and then passes through the top filter and is filtered and purified into the room. The air in the room is fully descending and flows downward at a speed of 0.2-0.3 m/s, so that paint mist particles after painting can not stay in the air but are directly discharged out of the room through the bottom air outlet. This continuous cycle of conversion, so that when the painting room air cleanliness of more than 98%, and the air into the air has a certain pressure, can form a constant airflow around the car to remove excess paint, so as to ensure maximum The quality of spray paint.
When the paint is applied, the damper is adjusted to the paint position, the hot air is circulated, and the temperature in the baking room rapidly rises to a predetermined drying temperature (55°C-60°C). After the fresh air is initially filtered by the fan, the heat is exchanged with the heat exchanger and sent to the air chamber at the top of the paint booth. After a second filtration purification, the hot air passes through the internal circulation of the damper, except for a small amount of fresh air. The vast majority of hot air is again heated and utilized, causing the temperature in the paint room to gradually increase. When the temperature reaches the set temperature, the burner automatically stops; when the temperature drops to the set temperature, the fan and burner are automatically turned on again, so that the temperature inside the paint room is kept relatively constant. Finally, when the paint time reaches the set time, the paint booth automatically shuts down and the paint finishes.
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The following content is compiled by this site's network building materials Xiaobian, for your reference.
Three coats of primer and four coats of paint are applied on the substrate. Each time the paint is applied, it is sent to a clean, temperature-controlled baking room and dried.
There is no big difference between the process of painting and the process of hand painting. Spray painting is generally used for large-area construction or spraying of objects, parts, etc. that have complex shapes and are difficult to paint with a paint brush. The key to the spray is the number of passes. More often than not, and each time you spray thin, the effect is good. Once sprayed too thick, the paint can easily flow, which is commonly known as "sag (falling)" When using the spray gun, take care to wear a mask to avoid inhaling the paint. The spray gun should be spaced from the spray surface...
When you first enter the home building materials market, many people will be confused. In the face of a dazzling array of goods, you don't know how to go shopping. Now Xiaobian tells you how to identify the quality and daily maintenance requirements of paint cabinet doors.
1, do not underestimate the difficulty of painting, overestimate their own ability of DIY, this type of hand-painted automatic spray gun and professional spray gun compared to the biggest feature is that it is difficult to spray evenly, this type of spray cans used to write on the wall is quite convenient; 2, do not listen to the business statement, a small bottle (400ml) can indeed spray more than a square, but this simply can not cover the background, especially the light-colored cover dark case, basically about 1 liter per square to be satisfied The effect; later we again...
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