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American Retro doing old furniture coating process techniques

Pretreatment of wood finishes
    The substrate processing is a successful first swing chain step in painting, but also a necessary condition of the complete set of quality products. So the quality of the wood surface treatment, related to the pros and cons of the painting and the finished product. American painting before processing the following:
    1) bleaching
    Wood heartwood and sapwood, wood color how much difference the line in order to make the wood color, especially light-colored products must be bleached, the purpose is to make the the uneven wood color by deep shallow, chromatic aberration smaller. Currently the most effective wood iron chain bleaching method is hydrogen peroxide, (commonly known as hydrogen peroxide) based, and use must be added to the catalyst in order to produce a bleaching effect, the most commonly used catalyst is ammonia. Use as follows:
    a. 10-20 parts of hydrogen peroxide solution (30-35% concentration), mixing an aqueous ammonia (23-25% concentration), brushing wood surface. Reduce bleach force can be diluted with water can also be used alcohol, there are differences, mainly have different effects on wood swellable.
    b bleached stop at room temperature for 1-2 minutes, and then at 45-55 ℃ thermal bake 10 minutes or dry for 30 minutes at room temperature; reusable bleaching, can not be reused;
    c sheet surface dry after washing with water, dried completely at room temperature or 50 ℃ baked for 90 minutes; then sanded.
    2) Fill
    Using configured finished fillers (commonly known as putty, putty), aims to fill a large natural defects in the material, such as insect eyes, cracks, dilute plus thinner, tone thick you can add a filler role is to increase the sand The grinding nature and maintain a smooth wood surface. Be dried for 1 hour or more, Note that the filler is fused substance, called embedded complement or substrate trimming some books.
    3) sanding
    Usually first with coarse sandpaper (80 # -100 #) sanding with fine sandpaper (150 # -180 #) the sanding or directly with 240 # sanding. The most commonly used automatic sander or belt sander sanding, the plane parts direct pressure regulating broadband sander, concentrates 5 to 10 wire. Note sanding to smooth wood clean, not too much grinding, and finally a machine sanding should adopt the 240 # sandpaper, preferably before painting on the line.
    4) destruction of processing
    To imitate some of the products by the use of long become damaged, old phenomenon, in the final after a white body sanding to do damage processing, namely the use of the different tools of destruction to make the antiquated appearance of the antique effect, its main tactics are as follows:
    a. of coarse sandpaper Zhuojiao and the leg of the table above be kibble another file with a file at the table wounds, to achieve the effect of natural wear and tear;
    b chained, beaten in the furniture edges, it traces of natural damage and pointed hammer, nuts and bolts, such as tools, slightly beat in the furniture surface to produce bruises dent;
    c with graver draw scratches infestation shaped effect;
    available with nails or screws beat wood surface, can be a similar infestation.
    This Road office renovation process must be done sanding, otherwise it will directly affect the coating effect.
    , Wood coating process
    1) material adjustment
    Use agent (commonly known as green water) or white side paint swatch color material adjustment (commonly known as red water, repair toner), and aims to further eliminate chromatic aberration. Note is generally used only one of them, and the material should be bleached in order to get the desired effect.
    2) the overall coloring
    Also known as the end of coloring or the material coloring, the use of a suitable colorant, and further approaches the background color swatch color, lint colorant can choose according to the substrates and products, medicines, Duro colorant and oily colorant. Commonly used by spraying all uniform spray.
    This procedure generally factory penetration background are not allowed to join a large proportion of the paste, or neither good leveling, but also lead to uneven penetration can not achieve the purpose of the fill holes coloring of. The transparent coating color unevenness is often the procedure to no avail caused.
    3) head-degree primer
    Also known as plastic solid primer solids is usually between 4 to 14 percent, due to the low viscosity and can quickly penetrate into the wood surface layer of a sealing background, two "extend" the effect of the subsequent coating process .
    The general production commonly used viscosity of 8 ~ 12s, the solids content of 8% to 12%, and sprayed Another important role is to cause the wood fibers Run rose again after mild sanding, spray primer before to get a clear color , the clarity of the processes to deal with improper or polished way will affect the color to no avail.
    4) Glaze colorants
    Also known as antique paint or antique oil, is in the slow dry and easy to wipe the oil or resin, a better transparency of the pigment dispersion agent, is made using the slow-drying solvent. Its role is to wipe the wood surface to form a soft contrast and shadow effects to produce classical taste. Slow-drying oil-based coloring agent, will not dissolve the lower head primer and upper-second primer, so do little effect by retaining with.
    If you encounter material catheter larger, deeper, better coating, smoothness, and the amount of savings paint production should generally be adding a small amount of filler, containing a small amount of resin and extender pigment, stir, do antique oil better.
    5) do shading
    Road Margulies coloring agent, # 000 or # 0000 steel wool, cis grain direction wipe the chiaroscuro operation, the last and then brush or rag to draw light and dark, the color of soft natural effect. The purpose is to show the timber three-dimensional effect, increasing shadow contrast.
    6) second primer
    Production is often referred SEALERS, a solid component is usually in the range of 14 to 25% of the primer, more rapid drying properties, the role is to protect the underlying colorant and Margulies colorant, and generally contains a sanding agent, according to circumstances viscosity adjustable in the 16s, to a 15-minute sanding, also act as, and topcoat bridging role.
    7) cloth printed
    Also known as patches colorant commonly used alcohol colorants. On the special color of the painted decoration with a soft cloth coating fabric printing operation, make bright level effect, strengthening the wood grain effect, increase the three-dimensional feeling.
    Operating technique is the use of a soft cotton cloth soaked in alcohol colorants, and then a little wrung out, and then hand holding the cotton in the surface of the substrate, in whole or in local tapping action, then 0000 # steel wool rags The styling has become softer and caught the light and dark.
    8) dry brush
    Played the role of Antique, generally used Margulies colorants. Local dip paint, make specific effect the corner, knife, trench or carved at the edge of the product.
    9) oxtail marks
    The plan the oxtail marks generally use Margulies colorants with oxtail pen light rejection draw, often in the light-colored regions at the edge of multi-zoned.
    Operating techniques is 4 to 5 cm of cotton, sealed with tape and a section of the former cm at one end of the wet head and said primer then no closure. Be dry and will form the an oxtail rope, with oxtail rope wet antique oil with a rag to wipe off that short irregular markings and curve before the board.
    10) flies black spots
    Flies black spots "is a decorative effect, but also become a spray point. Generally black and brown, alcohol colorant or the Margulies coloring agent, use the gun to adjust the gas volume and the amount of oil ejected, the role of revealing hidden old, classical furniture effect.
    Operating point is alcohol deployment into alcohol and dye cloth printed with toner into the gun, then spray some spray point the gun Pressure control generally requires repeated debugging in order to achieve the desired effect.
    11) topcoat
    Above do the old process, finishing top coat to protect the underlying effect and increase in coating thickness, mostly sprayed twice.
    If you need a trench paint, after the first topcoat, and Note Do not finishing trench paint before sanding, easy to erase after coating; strict factory painted two normal production, the first available imitation nylon cloth Road 0000 # steel wool, and finally cleaned with a brush corner. This procedure is very difficult to operate, will be melted after most of trench paint in spray topcoat, the topcoat to keep in order to achieve the desired effect, the majority depends on experience.
    12) dust paint
    For product appearance obsolete old-fashioned or ancient painting, ancient effect, usually at the edge of the product groove carved at residue, specialized antique oil operations to form as if after a long time to gather a lot of dust in the furniture on.
    Such practice is common in American antique crackle paint coating, steel wool after finishing wipe clean only stay in the groove at.
    13) polishing waxing
    First with # 800 - # 1000 water sandpaper surface coarse sand polished stick lubricant or pine fragrance, use # 0000 steel wool polishing, and finally re 2000rpm high-speed polishing machine wool polishing wheel to the need brightness, with a clean, soft cloth to wipe clean; smoother painting surface, increasing the coating feel, enhance the appearance of the coating.

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