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Hangzhou Color Powder Coating Equipment Co.,Ltd Banner
Home » Support » FAQ
FAQ
  • Q

    Ow About The Warranty?

    A

    Because of quality problem we supply free replacement included the shipping cost within one year according to the problem photo with series number.

  • Q

    What Is Powder Coating Line?

    A

    automatic powder coating line for metal products
    powder coating line for iron products
    we manifacture automatic, semi-automatic, manual and special type coating and painting lines for steel or alluminium profiles, for metal products.
    Dipping type and spraying type pretreatment lines
    Powder or liquid paint curing ovens
    Electrostatic powder coating booths, liquid painting booths(wet wall type or dry filter type)
    Powder coating recovery system
    Drying ovens
    Spray machine
    Reciprocators
    Special type liquid painting systems
    Special type furnaces
    Aerial conveyor system
    Spare parts

  • Q

    How To Test Powder Coating Quality?

    A

    Test methods are designed for two purposes:
    Performance reliability, (i.e.,to determine the suitability of a coating for a given use.)
    Quality control, (i.e., to maintain uniform quality in coating application and raw materials applied.)
    Some laboratory tests for reliability can be related directly to performance under service conditions, thus making coating evaluation simple. However, in other cases the evaluation of a coating in the laboratory is inadequate either because of time, or because there are no suitable methods for measuring the desired properties, or because the coating is designed for long-term service and the laboratory tests cannot be correlated. Generally, it is not possible to devise short-term tests that will give positive correlation with service because the tests must be accelerated by increasing the severity of exposure. Laboratory tests are set up to screen coatings, and the selected coatings must then be evaluated under actual service conditions. If a given material performs better in carefully selected laboratory tests, the formulator is generally confident that it will also perform better in actual service and will therefore approach field trials with considerable optimism.
    Some examples of tests that are commonly performed on products that have been powdercoated are listed below:
    The following examples are of actual tests that companies have been, or are now performing on powdercoated surfaces on the finishing line in actual production. Each has an ASTM testing standard.
    (1) SALT SPRAY CORROSION TEST (ASTM B117)
    Use a 5% salt solution at 92-97 degrees F in a sealed weather cabinet. Scribe X in steel zinc phosphated test panel to bare metal. Inspect every 24 hours. End test and total hours after 1/4" creepage from scribed area. Creepage shall not exceed 1/4" in either direction from scribe line after 500 hours exposure.
    (2) IMPACT TEST (ASTM D2794)
    Coating on .036 inch thick phosphated steel panel shall withstand impact with 1/2" Gardener impact tester ball at 26 inch pounds direct and reverse. No grazing or loss of adhesion. Finish shall not be able to be removed at impact area with 3M Y-9239 tape.
    (3) CHEMICAL RESISTANCE TEST (ASTM D1308)
    Place approximately 10 drops of test solvent, consisting of 95% by weight toluene and 5% by weight Methal Ethyl Keytone on the surface of the coating. Allow to stand for 30 seconds. Wipe off with soft, dry cloth. Coating shall show no more than a slight circular mark.
    (4) CROSS HATCH ADHESION TEST (ASTM D3359)
    Scribe parallel lines through coating to substrate, 1/4" apart over a distance of one inch. Scribe another set of parallel lines 1/4" apart and perpendicular to the first set. Apply any sticky tape then remove slowly. Results should be no lifting of the cured powder between scribe lines.
    (5) HARDNESS TEST (ASTM D3363)
    Faber Castell wood pencils are used in hardness of 1,2,3,4,. Coating shall show no marks from 2H pencil.
    (6) BEND TEST (ASTM D522)
    Coating on .036 inch thick phosphated steel panel shall withstand 180 degree bend over 1/4" mandrel. No crazing or loss of adhesion and finish at the bend be able to be removed with 3M Y-9239 tape.
    (7) GLOSS TEST (ASTM D523)
    Test coated flat panel with Gardener 60 degree meter. Coating shall not vary + or - 5% from data sheet requirements on each material supplied.
    As with any test accuracy depends on controlling the factors that are use within the testing procedures, i.e. the pencil hardness test depends on how much pressure is applied behind the pencil. Testing procedures are set up according to ASTM standards to establish nationally accepted guidelines. True comparative testing should be performed on finishes at the same time under the same conditions whenever possible. This will insure that the results, upon conclusion of the tests, are truly relative.

    Principle of Electrostatic Coating Guns
    Electrostatic spray application uses a fluidized bed as a feed hopper to hold the powder and fluidize it so that it can be pumped to the tip of a spray gun using compressed air for transport from the feed hopper to the gun tip.
    The spray gun is designed to impart an electrostatic charge to the powder material and direct it toward a grounded workpiece. This process makes it possible to apply much thinner coatings with a wide variety of decorative and protective features.
    The electrostatic charge can be imparted with voltage, called corona charging, or by frictional contact with the inside of the gun barrel, called tribo charging.
    In a corona charging system, a voltage source generates current through a voltage cable that carries it to the powder gun tip. Powder is pumped through the gun and out of the gun tip using compressed air. As the powder passes through the electrostatic field at the gun tip, it picks up a charge and is attracted to a grounded substrate. The part is then conveyed into an oven for curing of the powder. In the cure oven, the powder melts and cross-links to a hard film to complete the process.
    Electrostatic spray application of powder is the most common application method. The parts to be coated are cleaned, dried, and cooled, the coating is applied and cured at the required temperature for the required time and then cooled for removal from the line.
    An electrostatic spray application system includes a delivery system and a charging system.

    What Are the Different Types of Powder Coating Equipment?
    There are several types of powder coating equipment used for coating metal. The most common types of equipment for applying powder coating include the electrostatic spray gun and the fluidized bed. These are used to evenly coat the workpiece with powder, creating a chip-resistant finish that is more durable than a traditional paint finish. Other types of powder coating equipment include recovery systems, spray booths and cure ovens.
    One of the oldest methods for applying powder coat is the fluidized bed dipping process. A basic fluidized bed is made up of a tank, an air supply and a plenum, or membrane that allows air to pass but not solids. As air is introduced to the plenum, thermoplastic powder is suspended, or fluidized. The heated workpiece is then dipped into the fluidized powder. Some fluidized beds also have the ability to electrostatically charge the powder, allowing the use of a tougher thermoset polymer instead of thermoplastic powder.
    Among the newer and more commonly used types of powder coating equipment are electrostatic spray guns. There are three basic types of powder coating spray guns. All of them rely on a fluidized bed or tank to hold the powder and an air supply to fluidize the powder and deliver it to the gun. The main difference between these three types of powder coating equipment is the mechanism used for applying the charge to the thermoset polymer.
    One of the oldest methods for applying powder coat is the fluidized bed dipping process. A basic fluidized bed is made up of a tank, an air supply and a plenum, or membrane that allows air to pass but not solids. As air is introduced to the plenum, thermoplastic powder is suspended, or fluidized. The heated workpiece is then dipped into the fluidized powder. Some fluidized beds also have the ability to electrostatically charge the powder, allowing the use of a tougher thermoset polymer instead of thermoplastic powder.
    Among the newer and more commonly used types of powder coating equipment are electrostatic spray guns. There are three ba

  • Q

    How To Buy colo Powder Coating Equipment?

    A

    how to buy the colo powder coating equipment?
    inform us your email address ,your company address ,phone number , and confirm the model number , Quanitity
    and choose how to delivery ,by sea ,by airlines to airport or by DHL ,UPS ,TNT these courier serives
    we will make the proforma invoice for your confirm the details ,after you pay ,we will delivery within 1 -10days according to
    the order details ,usually 1-2pcs equipment delivery within 2days ,if above 10pcs usually it is 7-10days ,
    after delivery we will give you tracking number by email or delivery the original shipping docuemnts  to you for clearance
    it is easy and safe to do business with us ,because we are factory ,we are the biggest factory in the powder coating equipment ,
    we have many agents in different countries ,so do not worry about your service or spare parts ,at present we export the colo powder coating equipment more than 80 countries already
    you can visit https://www.youtube.com/watch?v=PCqV3pwhpRg or www.colourspray.com for more information fo my company
    payment term:  Paypal ,wester union ,money gram , bank transfer

  • Q

    The Electrically Conductive Powder Hose?

    A

    Who hasn’t had it happen to them? You pick up a powder hose and suddenly it’s literally like being struck by lighting! The problem: During the coating process powder flows through the hose. Due to the friction caused by this, the hose becomes electrostatically charged. Since it is not earthed, it discharges as soon as the opportunity arises. An unsuspecting operator can quickly become just such an opportunity. The solution: To resolve this problem the hose needs to be earthed – but normally plastic is not electrically conductive. This is why those resourceful people at Wagner have come up with a powder hose with an electrically conductive core, a vein of carbon running along the whole length of the hose. When the new powder hose is used with a suitable injector (PI-P1 or PI-F1), the discharges described above finally become a thing of the past. With a few adaptations older injectors of Types PJ-2020PRS and PJ-D1 are also compatible with the new electrically conductive powder hose

  • Q

    What Is The Surface Finishing?

    A

    Surface finishing in manufacturing applies to any final procedurer series of procedures that result in a change in a desired property of a face of the manufactured item. Physical or chemical properties may be altered. The metalworking, textile, and polymer industries often use surface finishing to improve the characteristics and value of their products. The roughness of a surface is a common physical feature that needs to be smoothed in a manufactured item. Grinding, sanding, polishing, and buffing are steps used sequentially to increase smoothness. A smooth surface may be desirable for material handling, the close mating of machined parts, or for aesthetic reasons. Reduction of friction between the object and another material is a frequent reason to smooth surfaces. Surface roughness, expressed as Ra, is a measurement of the arithmetic mean of the peaks and valleys of a surface. It may be measured directly by a contact profilometer, a device in which a diamond needle on a stylus rides up and down the profile, following a programmed grid while recording the results. These devices measure Ra from 0.1 to 0.4 microinches (3 to 10 nanometers). Non-contact profilometers and interferometers measure Ra by a wide variety of optical measurements, comparing the angles at which light is reflected and interference patterns. These machines can measure roughness in the range of 0.012 to 0.02 microinches (3 to 5 angstroms). Nickel Brazing Materials Your one stop source for powders. Brazing The surface properties of the mirrors used in telescopes largely determine the quality of the images obtained. The measurement of the smoothness of these mirrors becomes as challenging as the surface finishing techniques themselves. The surface of the Hubble telescope's primary mirror has a total variance of less than 0.04 microinches (10 angstroms). Metal sheets or objects are often coated with polymers or paint to protect the material from corrosion and pitting. These finishes may be applied by spray or sputtering, or by vapor or powder deposition. A mirror finish may be achieved by these methods. The final step may involve a curing, annealing, or baking to set the finish and ensure adhesion to the underlying material. Embossing or etching may also be employed to modify the surface of the finished object. Electroplating is the practice of bonding a surface coating of one material to another by electrochemical methods. Typically, these are metals or metal alloys bonded to other metal substrates. Tough, corrosion-resistant, and attractive surface finishing is a requirement for many car, airplane, and boat components. Likewise, medical components use electroplating to achieve a surface that may be sanitized or sterilized. In the textile industry, fabrics may go through surface finishing steps that add sheen to the material, starch to aid in handling, or an embossed pattern. The texture of the material may be enhanced by a brushing or scraping technique. Items made from polymers are often subjected to surface finishes to alter their texture, gas or liquid permeability, or stiffness.

  • Q

    Powder Coating :How To Apply?

    A

    Powder Coating is the current and modern way of surface finishing which, unlike the traditional wet paints, uses dry method of coating items or surfaces. The process basically involves placing the powder coated surface in an oven, then subjected to heat until it reaches its melting point. The finish is really impressive and very attractive and the layer it creates is so sturdy which is actually highly resistant from corrosion, abrasion and scratches unlike any other conventional wet paints. Moreover, electrostatic coating is also applied in this process. This actually commences application by putting the powder into the target area with the use of tribo or charging guns. A container is placed at the bottom with air cavity where it is filled with powder for sticking pre-heated coat to the surface which is to be applied with the powder. Moreover, the end finish greatly depends on the preparation of the surface. Preparation of the substrate or layer is vital in order to produce a quality coat. The surface or product which is to be coated must be free from oil traces, lubricants and dirt particles. This is the primary step towards achieving a successful and high quality finish. It is important to thoroughly clean the area and make sure that no chemicals or any particles are present to avoid uneven coat. If correct preparation is not done, the quality of your finish might be negatively affected. Additionally, there are different methods you can choose from to clean any stains or particles present on the surface area. Cleaning techniques may vary from the type and amount of actual stains but one of the common methods is sandblasting. You can apply sandblasting on wooden, plastic and glass surfaces while silicon carbide grit can be used for non-metal surfaces. Also, a cast steel shot is used for steel surface areas prior to actual application of powder. The powders utilized in this type of coating approach are basically made of finely ground particles and resin. Once the particles are charged, it will adhere to the electrically ground areas of the surface when heat is applied. The last and most important process is curing. This stage involves placing the coated item inside an infrared cure or convection cure oven and by letting the powders melt with the equipment set to 200 degree Celsius. Then, place the item inside for approximately 10 minutes. During this process, powders start to melt and react with the charged particles which make it adhere to the substrate permanently. Furthermore, in order to achieve a long-lasting and durable finish, one must take into consideration the proper usage of the equipment as well as the proper application of the powders. Powder coating has become successful in making an impression of durability, affordability and eco-friendly. That is why most manufacturers opt to use this technology in their products especially in bulk production

  • Q

    How Can Poeder Coating Benefit You As A Consumer?

    A

    Powder coating is a new technology that uses dry paint powders. It delivers a very beautiful finish that will surely satisfy customers. It can be comparable to traditional wet paints however; this approach is a lot better in many aspects. There are tons of benefits and advantages when choosing this method rather than the typical solvent based paints. This technique is eco-friendly as well as not harmful to the overall well-being of the public. The process does not produce toxic waste materials that can be harmful to human health as well as to the surroundings. In fact, unused or excess powders can be reused so basically there will be no powder wastage. Just imagine how much money you can save because of this recyclable powders. If you run a manufacturing business, you can save a lot of investment capital when you take advantage of this technique to paint your products. It is very simple to use and apply so the workload will be lessened. Every minute a worker spent in creating or finishing a product is equivalent to a certain amount of money which is normally called production cost. So, the lesser time he will spend on finishing the job, the more money you can save. Aside from this, the quality of finish it delivers is way better than what regular wet paints can provide. It guarantees excellent finish by providing you a smooth and solid coat. This innovative technique can also be applied to different materials like metal, ceramics, wood, plastics and aluminum. As a matter of fact, products made from these materials are most likely powder coated. Its affordability, efficiency and durability just made it the number choice in coating materials. On the other hand, if you want to know how this is applied, this article will give you some hints and ideas. The first thing that needs to be done is to thoroughly clean the surface you are going to coat. It must be free from dust particles and any other substances. After that, apply the coating material properly and evenly. Once the surface is entirely covered with paint powders, curing process now takes place. Curing is the final step which involves application of heat in order to melt the powder and creates a uniform and seamless finish. This type of painting approach is now becoming more and more popular to most businesses and even ordinary people who might want to coat their household fixtures opt to use this. Its benefits are incredible and just hard to ignore therefore you must try powder coating and achieve good results.

  • Q

    What Are The Best Tips For Diy Powder Coating?

    A

    Do-it-yourself (DIY) powder coating, may save a person money in the long run if he or she invests in quality tools and does powder coating regularly, but it is important to consider a few important aspects of this activity before investing in any tools. First and foremost, DIY powder coating will require a workspace that is well-ventilated, since the powder can cause health issues that can be potentially dangerous. Safety equipment such as goggles, gas masks, and gloves should be worn at all times to prevent injury or other health problems. The effectiveness of DIY powder coating will be affected by the quality of tools used for the process. This includes the powder coating equipment as well as an oven that can be used to cure the pieces once the powder is applied. This oven should not be the same one used in the house for cooking food, as powder residue can contaminate the oven, making the oven unusable for food preparation. The oven should also be large enough for the size of the pieces being powder coated, and the temperature of the oven should be easily regulated. Aside from the investment of money into the proper DIY powder coating tools, a person will need to spend some time preparing a work area for the powder coating process. The powder can be messy, and it is possible to recollect some of the spent powder that does not adhere to the piece, but a person will need to set up the workspace properly to contain the power. A beginner is likely to spend a lot of powder on the first few attempts, so he or she should be prepared to keep powder from going everywhere it should not go. It is a good idea to do some test coats when doing DIY powder coating. Scrap metal can be used as a test piece so the final piece to be powder coated does not get ruined with practice runs. It will be very important to thoroughly clean any pieces to be powder coated, which includes the removal of grease, dirt, grime, and rust. Removing rust can be difficult and may require some specialty tools like a wire brush or angle grinder. The powder will not effectively adhere to the metal if it is greasy, dirty, or rusty; the DIY powder coater will find himself having to repeat the process several times on a dirty piece.

  • Q

    What Are The Different Types Of Powder Coating Kits?

    A

    There are many powder coating kits available commercially. They each come with a different set of supplies and equipment, but all serve the same purpose of allowing powder coating to be performed at home. All powder coating kits come with a spray gun to be used to apply the coating and usually a selection of different tips to allow for various spray patterns. Most powder coating kits also provide a few starting colors so the gun can be used right away. One item that not all kits come with is an air compressor so the gun can be used. Power coating is the process of applying a fine powder to a surface to create a durable colored coating. At home, the powder must be applied with a spray gun. The quality of the spray gun that comes with a home powder coating kit can vary greatly. A poorly designed gun will have a large amount of overspray, causing the coating dust to spread far beyond the target item. A high-quality gun will have several tips and possibly be adjustable, allowing for a focused application of the coating. Some more expensive powder coating kits come with a collapsible spray box. This is a set of panels that can be assembled into a box shape with one side open. These boxes are good to have because they will capture the overspray and keep the powder isolated. This can be advantageous when powder coating an item, because the overspray — which is just powder — can be gathered up and reused. One vital piece of equipment that only some higher-end powder coating kits come with is an air compressor. The spray gun requires compressed air to move the powder onto the surface of the object to be coated. Canned air might work for small parts but also might have insufficient pressure to coat a larger piece. If a powder coating kit does not come with an air compressor, then one will have to be secured separately. One item that none of the powder coating kits comes with is an oven. The final step of powder coating is to bake the part in an oven so the powder melts and forms the completed finish. The oven must be electrical, because the powder could cause ignition with an open flame, and it must not be an oven that is used for making food. If it is not possible to get a separate oven for the powder coated part, then some options include very powerful heat lamps or space heaters.

  • Q

    Tips For Powder Coating?

    A

    Tips
    Powdercoating is an environmentally friendly, corrosion and UV light resistant finish. Although it is best done with precision industrial equipment, it is possible to experiment with it in a home workshop.
    Clean and rinse all metal surfaces thoroughly, as with all paint coatings.
    Use in a well-ventilated, clean area.
    Collect all excess powder for reuse in future applications.
    Remember, you will have to heat the coated object to cure the powdercoat, so you will have to have an oven which will hold the piece, or be willing to apply heat directly with an infrared lamp for a sufficient time to cure it.
    There are a number of sources for powdercoating powder, guns, and other equipment online.COLO is the biggest supplier of
    powder coating equipment  in china.
    Always Pre-heat the part in the oven prior to coating. This will outgas any grease or oil still embedded on the surface. If the part is not pre heated, any grease or oil still left after cleaning will outgas during curing and bubble the finish during curing.

  • Q

    How To Powder Coating?

    A

    1.  Determine the type of material you are going to powdercoat and then select a suitable powder for the finish. Powdercoating is done with thermoplastic or thermoset polymer powder, and these materials are formulated for bonding with different base metals to give the best results.

    2.  Clean the base metal thoroughly. Using bead or abrasive blasting on hard metal, such as cast iron or steel, will remove mill and rust scale, dirt and foreign materials. Chemical solvent cleaning will remove any grease, oil, or paint, and light sanding can be done to finish preparing the surface. Aluminum, magnesium, and other soft alloy metals can be solvent cleaned and wire brushed, or sanded if needed.

    3.  Apply the powder to the object to be powder coated. This is done using a "gun" or compressed air sprayer which electrostatically charges the powder material so that it sticks to the grounded base metal object receiving the coating. These guns are available from various suppliers, and cost as little as $100. For experimental purposes, you can apply the powder to a flat metal surface by dusting it directly on, and spreading it to a thin, even layer.

    4.  Cure the metal at a temperature appropriate for the powder material you use. A conventional oven is suitable for this purpose if the metal is small enough to fit, otherwise, an infrared heat lamp or other flame less heat source needs to be used. Normally, the object is heated to 350 to 375 degrees F. for about 10 to 15 minutes, and allowed to cool

  • Q

    What Is A Powder Coating Machine?

    A

    A powder coating machine is a device that applies protective coatings on metal parts similar in finish to conventional liquid paint. The main difference between the two processes is the method by which the coating is applied. In the case of powder coating, a stream of positively charged powder is applied to a grounded or negatively charged metal surface. This electrostatic method creates a better coating to metal bond than is possible with conventional paints as well as offering several other benefits not possible with liquid coatings. There are several different powder coating machine types in general use with the most common being the corona and tribo spray gun variants.Powder coating is the process of coating metal items with layers of powdered thermoplastic or thermoset polymer. The process is an efficient and highly effective method of coating a wide variety of consumer products ranging from domestic appliances to garden furniture. These finishes are applied with several different powder coating machine types including spraying, electrostatic disc, electrostatic magnetic brush, and fluidized bed systems. Of these, the spray types are the most widely found in most commercial applications. The corona and tribo spray coating machines see the most use.The corona gun powder coating machine consists of a powder dispenser, a high voltage generator, a corona spray gun with powder feed hoses, and a negative or ground connection. To operate the corona gun system, the ground connection is attached to the workpiece and suitable powder coating material is loaded into the machine's dispenser. The high voltage generator energizes an electrode in the gun, thereby imparting a powerful positive charge in the powder and creating a high energy electrical field between it and the workpiece. This electric field serves as a motivating agent which draws the positively charged powder to the surface of the workpiece. Upon contact, the powdered coating bonds to the metal surface, thus forming an even layer. The tribo type powder coating machine also relies on a electrical field to bond the powder to the metal surface but uses compressed air to transport it through a Teflon庐 tube and nozzle towards the workpiece. The positive electric charge in the powder is imparted by friction between it and the surface of the Teflon庐 tube and bonds the layer of powder to the metal in the same way as the corona gun method. After coating with both systems, the workpiece is often heated to allow the plastic coating to spread out more evenly and complete the bonding and curing process.

  • Q

    What’s your main production?

    A

    Hangzhou Color Powder Coating Equipment Co.,Ltd is a company who is specialized in R&D and manufacturing of many kinds of copper and aluminum heat sinks. The company founded in 2003, and located in Dongguan City, Shipai Town which is near the Pearl River delta development center. During the past 13 years, our company has been keeping forward to strengthen constantly the competition of hardware and software together with the construction of teamwork and the improvement of manufacturing skills.

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