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Dino-Power Airless Paint Sprayers Blog

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Automated linear spray systems

Manufacturers who mass-produce wood products use automated spray systems, allowing them to paint materials at a very high rate with a minimum of personnel. Automated spray systems usually incorporate a paint-saving system which recovers paint not applied to the products. Commonly, linear spray systems are for products which are laying flat on a conveyor belt and then fed into a linear spray system, where automated spray guns are stationed above. When the material is directly below the guns, the guns begin to paint the material. Materials consist of lineal parts usually less than 12 inches (30 cm) wide, such as window frames, wood moulding, baseboard, casing, trim stock and any other material that is simple in design. These machines are commonly used to apply stain, sealer, and lacquer. They can apply water- or solvent-based coatings. In recent years ultraviolet-cured coatings have become commonplace in profile finishing, and there are machines particularly suited to this type of coating.

Electrostatic spray painting

In electrostatic spray painting or powder coating, the atomized particles are made to be electrically charged, thereby repelling each other and spreading themselves evenly as they exit the spray nozzle. The object being painted is charged oppositely or grounded. The paint is then attracted to the object giving a more even coat than wet spray painting, and also increasing the percentage of paint that sticks to the object. This method also means that paint covers hard to reach areas. The whole is then baked to properly attach the paint: the powder turns into a type of plastic. Car body panels and bike frames are two examples where electrostatic spray painting is often used.
There are three main technologies for charging the fluid (liquid or powders):
• Direct charging: An electrode is immersed in the paint supply reservoir or in the paint supply conduit.
• Tribo charging: This uses the friction of the fluid which is forced through the barrel of the paint gun. It rubs against the side of the barrel and builds up an electrostatic charge.
• Post-atomization charging: The atomized fluid comes into contact with an electrostatic field downstream of the outlet nozzle. The electrostatic field may be created by electrostatic induction or corona, or by one or more electrodes (electrode ring, mesh or grid).

Air spray guns (pneumatic sprayer)
The paint is applied to an object through the use of an compressed-air pressurized spray gun. The spray gun has a spray nozzle, air cap & needle, and need air compressor about 4 – 7 bar. When the trigger is pressed the paint mixes with the compressed air stream and is released in a fine spray.
The conventional air spray gun is normally 4-7bar (60-100psi) pressure, and the air spray guns normally equip with one extra tank like 600ml, 1000ml, so you have to fill the tank when the paint is finished. but there’s a lot of paint was wasted because of its big output volume and the atomization is not so good. Compare to the HVLP or LVLP, it has less atomization and more waste.

Types of nozzles and sprays
Due to a wide range of nozzle shapes and sizes (tip size from 0.8mm to 2.5mm), the consistency of the paint can be varied. The shape of the workpiece and the desired paint consistency and pattern are important factors when choosing a nozzle. The three most common nozzles are 1.4mm / 1.7mm / 2.0mm in the shape of full cone, hollow cone, and flat stream. In a manual operation method the air-spray gun should be held by a skilled operator, about 6 to 10 inches (15–25 cm) from the object, and moved back and forth over the surface, each stroke overlapping the previous to ensure a continuous coat. In an automatic process the gun head is attached to a mounting block and delivers the stream of paint from that position. The object being painted is usually placed on rollers or a turntable to ensure overall equal coverage of all sides.

HVLP (High Volume Low Pressure) spray gun
This is similar to a conventional spray gun using a compressor to supply the air, but the spray gun itself requires a lower pressure (LP) for low overspray. A higher volume (HV) of air is used to propel the paint at lower air pressure. The result is a higher proportion of paint reaching the target surface with reduced overspray, materials consumption, and air pollution. A pressure regulator is often required so that the air pressure from a conventional compressor can be lowered for the HVLP spray gun. Alternatively a turbine unit (commonly containing a vacuum cleaner derived motor) can be used to propel the air without the need for an air line.
A rule of thumb puts two thirds of the coating on the substrate and one third in the air. True HVLP guns use 8–20 cfm (13.6–34 m3/hr), and an industrial compressor with a minimum of 5 horsepower (3.7 kW) output is required. HVLP spray systems are used in the automotive, marine, architectural coating, furniture finishing, scenic painting and cosmetic industries.

LVLP (Low Volume Low Pressure) spray guns
Like HVLP, these spray guns also operate at a lower pressure (LP), but they use a low volume (LV) of air when compared to conventional and HVLP equipment. This is a further effort at increasing the transfer efficiency (amount of coating that ends up on the target surface) of spray guns, while decreasing the amount of compressed air consumption.

LVMP (Low Volume Medium Pressure) spray guns
This is a new type spray gun which occured in the market in the recent years.
the LVMP medium pressure spray gun will generate better atomization than LVLP sprayer. but you have to attach it to one bigger horsepower compressor which would generate more compressed air for this spray gun

Turbine HVLP paint sprayer Vs Compressor HVLP paint sprayers

Benefit for Turbine HVLP sprayer:

1) Complete Portability typically 20 lbs.

2) Built in filter system

3) All Self contained

4) Fast operation with heated material

4) Excellent finish quality

5) Very Low Overspray – Great for indoor applications

SGW: We prefer the 4 Stage turbine. If you are going to spend this much money on a turbine system, the added power of an under powered turbine (as compared to our compressor guns) will greatly benefit from the extra stage. We do carry 3 stage turbines for serious DIYs.

We also prefer the quiet turbine units. One of the greatest complaints we have of tubines was their annoying vaccume cleaner whine. The Fuji quiet compressors while, more expensive, have 50% less noise. Now, that’s a winner!

Benefit for Compressed air HVLP paint sprayers:

1) Highest Finish Quality

2) Compressor can be used with other tools

3) More versatile setups

We prefer the 4 Stage turbine. If you are going to spend this much money in a turbine system, the added power of an already under powered turbine (as compared to our compressor guns) will greatly benefit from the extra stage. We do carry 3 stage turbines Here

We also prefer the quiet turbine units. One of the greatest complaints we have of tubines was their annoying vaccume cleaner whine. The Fuji quiet compressors while, more expensive, have 50% less noise. Now, that’s a winner!

Top of the Line System 4 State Quiet 4 w/ New! XT2 Pressure Assisted

2-stage vs. 3-stage vs. 4-Stage Turbines sprayers

When portability, lightweight design and a fully self contained system with filtration both fluid and air is required, look at a Turbine HVLP.
About the size of a bread box, Turbines are terrific for painters who are on the go! just don’t have the room for a larger compressor or just want the option of a professional finish where ever they might want it without the hassle of a larger compressor.

By choosing a powerful 4 stage turbine you can get a professional top quality finish comparable to compressor driven HVLP.

2 Stage Turbines are very small and cute but deliver very little power and are not recommended for professional painters.

3 Stage turbines are the lowest you should go for a professional finish. The Fuji Mini Mite 3x is the strongest 3 stage on the market and is a terrific value.

4 Stage turbines are the standard for professional finishers. You can never have too much power when working with today’s modern paints. The stronger motor provides better atomization for your material, allows you to use a longer hose, and allows you to spray thicker materials like latex with ease.

Remember compressor HVLP are not interchangeable with Turbine HVLP. You CAN convert it about $100, but the cost makes it not worth it.

We also carry the quietest Turbine on the Market. The Q4 by Fuji is a terrific powerful turbine unit with very little noise. 50% quieter than regular turbine units.

What is a turbine stage?

Turbine HVLP uses a bypass vacuum motor in the box. This unit has fans (called ‘stages’) driving and moving the air at one end and its own small cooling fan at the other. In between the stages and the cooling fan are the copper windings necessary to power the motor. It is these copper windings that provide heat and evaporation to provide warm clean air.

The cooling fan is secured to the same shaft (rotor) as the main stages (fans). What this means is that all fans, including this small cooling fan, rotate at 19,000-21,000rpm (depending on the motor and certain conditions). This warms the air and the material to provide a finer flow. As you can see the more fans the more power, the more better.

Turbine Nozzle Size Conversion

The fluid jet and needle MUST always match exactly. However, the spraycap/air nozzle may be one size up or down from the norm. The sizes No.3 and 4 setups are both ideal for all fine finishing. 3 different setups are available as accessories. Generally speaking, the quality of atomization and finish suffers as you go to the largest size setups (No.5 and 6). Please note that the chart offers you a starting point only as to the setup size to be used. The best way to decide is by experimentation. If you are using the No. 3 setup and wish to spray faster, wetter then switch to No. 4.

IF YOU DO NOT INTEND ON SPRAYING WALLS & CEILINGS THEN THE ONLY TWO SETUPS YOU WOULD EVER NEED WOULD BE THE #3 AND THE #4.

Size # 3 – 1.0 mm (.039″) FINE TO MEDIUM OUTPUT

Most ‘fine-finishing’. WATER-BASED LACQUERS, NITROCELLULOSE LACQUERS, SEALERS, CELLULOSE, ACRYLICS, SYNTHETICS, POLYURETHANE, STAINS, VARNISH, GLITTER PAINTS, PRIMERS. Please note thicker material must be thinned as much as 30%. Thinning beyond manufacturers specs should not affect finish quality if done properly. No latex and house enamels with this tip.

Size # 4 – 1.4mm (.055″) MEDIUM OUTPUT

Similar to No. 3 but more coverage. Especially suitable for AUTOMOTIVE ENAMELS, NITROCELLULOSE LACQUER, CATALYZED LACQUERS and LATEX where finer finish is required such as louver doors, trim, cabinets (see section above about Latex). Also good for VARNISHES and OIL-BASED PAINTS. Latex paint must be thinned 20%-30%. We recommend floetro, extender or Penetrol.

Size # 5 – 1.8mm (.070″) HIGH OUTPUT

Larger surfaces, thick layers, spotted effects. SEALERS, VARNISH, POLYURETHANE, OIL BASE PAINTS, ENAMELS, EPOXY, PLASTIC, ADHESIVES, FLOOR PAVING PAINTS, LATEX (on walls) SPLATTER PAINTS, MULTI-FLECK ETC.

Size # 6 – 2.2mm (.086″) EXTRA HIGH OUTPUT

Very heavy flows, fast coverage. STONE FINISH PAINTS, TEXTURE COATING, INDUSTRIAL PRIMERS, LATEX (on walls, ceilings) ETC.

how to chose the airless tip for spraying the latex / varnish / stains coating?

If you use an airless paint spray gun to paint the interior of your house, you need to use several different nozzles to complete the task. For example Latex paint / stain and varnish, each have different viscosity. Each one requires a different size nozzle to ensure proper application.
Acrylic/Latex Paints
• When painting a typical wall or room with acrylic or latex paints, a nozzle with a wide-diameter orifice is used. Wide-diameter nozzles spray wide paint patterns, and allows thick acrylic paint to spray evenly, and in thicker coating. The result is being able to paint faster and in high efficiency. Size 515 to 517 nozzle is recommended.

The three digit numbers used to explain a nozzle size refers to the fan width and the orifice size. For example, “515″ nozzle has a fan width of 10 inches and an orifice size of 0.015 inches. The first digit denotes half of the pattern size. So, the 5 equates to 10 inches of fan pattern spray. The second and third digit measure the orifice size in thousandths of an inch. So, the 15 equates to an orifice size of 0.015 inch.
Wiping Stains
• An airless spray gun can be used to spray wiping stains onto wood trim. The nozzle is small in order to reduce overspray. Wiping stain has the consistency of alcohol and is not thick. Using a 409 to 411 nozzle will keep the spray pattern narrow, and allow a smooth spraying of stain onto the wood. If overspray is still a problem, use a 209 nozzle.
Varnish
• Spraying varnish onto stained molding requires a nozzle between wiping stain and latex. Using a 211 to 213 nozzle keeps the flow of varnish narrow to reduce overspray. The nozzle is large enough to prevent thicker varnish from clogging the orifice. If you use hand-mixed varnish or shellac mixed with flakes, a 413 nozzle or larger is recommended to prevent orifice clogging.

高压无气喷涂效率高,表面细腻平整,附着力强,涂料损耗少而得到建筑、机械、船舶、家具等行业的广泛使用。
  高压无气喷涂机分为气动式无气喷涂机,电动式无气喷涂机(柱塞泵)和电动无气喷涂机(隔膜泵),由于气动式无气喷涂机需要带压缩空气源而限制了气动喷涂机的使用。
  现仅将电动柱塞无气喷涂机与电动隔膜无气喷涂机作比较,柱塞泵是将直流电动机带动柱塞复运动将涂料吸入,加压后排出,由于其柱塞裸露,且柱塞在涂料中工作,在涂料研磨作用下柱塞磨损非常快,一旦配备口径较大的喷嘴,其柱塞往复频率提高,加剧柱塞的磨损,机器寿命短。而更换柱塞价格非常昂贵,如果电压不正常也将直接导致工作直流电的不正常。另外,由于大幅来回往复运动,柱塞泵的工作脉动很大,使得喷涂不稳定,涂料喷上的墙面平整度就不够好。但柱塞泵初始吸料较快是其长处。
  隔膜式无气喷涂机(隔膜泵),其设计是在柱塞泵基础上得到了更大的改进,原理为用电动机带动活塞往复工作(注意,活塞并不直接接触涂料),再推动隔膜运动,将涂料吸收加压后推出,通过喷嘴喷向涂装物体,由于其活塞在防磨损的油中工作,工作环境大大优化,寿命大大提高,经过掺透硬化处理的活塞更是不易损坏,加上高分子材料制成的高抗绞隔膜更使隔膜泵寿命进一步提高。运行可靠是隔膜泵的又一长处,故障率极底,对电压要求底,对环境要求底,维修容易,维修费用仅为柱塞泵的五分之一左右。
  隔膜泵性价比优,其优异的性能价格比将推动隔膜泵的推广。

Quel est l’avantage du système de peinture airless?

Vous pouvez toujours peindre votre maison par le pinceau et le rouleau traditionnel, mais de peinture au pistolet airless système peut réduire votre temps de la peinture en deux.
pistolets à air sont principalement alimentés par air comprimé, il a grand bruit, et il ne peut revêtements par projection à haute viscosité. mais “airless” pulvérisateurs sont également disponibles. Le pulvérisateur est considéré comme “airless” car la turbine électrique crée une pression élevée (environ 210bar) dans le mécanisme de la pompe pour faire sortir la peinture. et la peinture sera pulvériser ou a explosé à la buse.
l’avantage de la peinture airless est comme ci-dessous continue reading…

Airless paint sprayers come in many different configurations and designs, but all have the same general features and controls. The basic idea behind how a sprayers works is that it pumps the paint and forces it out a very small tip on the airless spray gun. There is no air or air compressor involved, hence the name is “airless” paint sprayer. They will apply a lot of paint very quickly and can make a tedious job very easy and quick.
airless painting
continue reading…

AIRLESS PAINT SPRAYER: Diaphragm VS piston
In these years some manufacturers of airless spray units launched the absurd spot “piston airless is better than diaphragm one”.
Particularly users from American / European countries seem to have absorbed this subliminal leitmotiv: in fact in these countries is quite uncommon to find a diaphragm spray unit, even though they are highly appreciated in continental Europe, former USSR, Arab countries, China, Northern and Southern Africa.
In spite of the evidence, some companies just convinced millions of users to leave diaphragm airless for piston type airless pump sprayer: in fact diaphragm airless sprayer was the real innovation, older users certainly remember it.
Who was not up to develop good diaphragm airless models came back to piston technology and launched a campaign to dissuade users buying diaphragm spray equipment.

above words are opinion from internet.
it’s just for your reference.
hope you will find it interesting for this article.

mitä hyötyä tyyni maalaus järjestelmä?

Voit silti maalata talosi kautta perinteinen pensseli ja tela, mutta maalausletku järjestelmä voi leikata sinun maalaus aikaa puoli.
Air ruiskupistoolit useimmiten paineistettua ilmaa, se on iso melu, ja se voi suihkuttaa korkea viskositeetti pinnoitteet. mutta “tyyni” ruiskut ovat myös saatavilla. Sumutin pidetään “tyven”, koska sähköinen turbiinin luo korkeassa paineessa (noin 210bar) pumpussa mekanismi työntää ulos maalata. ja maali on Atomisoidaan sokeakokeesta tai räjähti suutin.
etuna tyven maalaaminen on alle
1. täydellinen maalaus viimeistely
Jos käytät maalaustela tai pensseli, seinä ei ole niin sujuvaa, vaikka käytät parasta maalit, tulos ei ole niin hyvä.
mutta jos käytät tyyni maalaus laitteet, korkea paine Atomisoidaan sokeakokeesta maalaus osaksi erittäin pieniä hiukkasia, ja pudottaa ne seinään, lopullinen pinta on hyvin tasainen ja tiukka.
2. korkea hyötysuhde
Ilman maalausruisku voisi spray 30-100 neliömetriä tunnissa
mutta Suurpaineruiskutuksessa aseet voivat maalaus 300 – 1500 m² tunnissa
joten se säästää paljon teidän työajan
3. parantaa pinnoitteen kiinnittymistä ja pidentää käyttöikää ja maalaus
airless väripistooli tekee korkea paine 3000psi tai enemmän, se antaa pienen maali hiukkasia hyvin vahva voima vaipua seinään.
se merkitys pinnoitteen hiukkasen yhdistetään käsi käsin hyvin vahva liima.
ja voit suihkuttaa korkea viskositeetti pinnoite ei liikaa vettä.
Jos käytät maalaustela, et voi maalata vahva pinnoite, ellet laittaa liikaa vettä laimentamiseen.
4. Jos käytät korkeapaineruiskua pinnoite, voit säästää 15% – 25% pinnoite
koska kun käytät maalaustela, pinnoite pinta ei ole sileä tai yhtä suuri kaikkialla.
mutta jos valitsit tyyni maalaus, kaikki paikka on sama paksuus.
5. Voit käyttää airless järjestelmää spray johonkin nurkkaan, kulma, kallistuksen … …
6. Helppo käyttää ja hiljainen.
sinun ei tarvitse ostaa paineilmakompressori valta ilman pistoolissa,
Nyt sinun tarvitsee vain laittaa pistoke kaapeli liittimeen, kytke kaikki laitteet + letku + aseet, ja voit suihkuttaa heti prime kierrätystä.
Prime takaiskuventtiili on vain varmistaa käyttää kaikkia sisäilman letku ja pumpun rungossa.