Category: Tutorial

Paintshop will make a big amount of waste air during operation. Based the current paint spraying technologies, the maximum paint application rate is about 60%. That means at least 40% paint will be extracted. If the paint booth provides up to 90% filtration capacity and save the solid particles inside booth tank, rest 10% is still hazard if we blow into atmosphere directly. Especially when the factory is close to a residential area, there're very strict extraction standards. Thus a proper treatmen solution is required for any paint shop construction. Waste paint air treatment or filtration is a complex system based the construction standards. Generally there're following stages for a complete clean filtration: water filtration - carbon filtration - VOC treatment - flame treatment. Water filtration - The primary and…

Automatic paint spraying is drived not only by a bare spray gun but also piping with backend pump system. The most popular selection of paint pump includes a pressure pot, diaphragm pump, gear pump and piston pump etc. A propriate choice will greatly help with our operation and reduce potential issues. In following section we will provide quick guidance on how to select among the different paint pumps to support our production requirements. Either diaphragm or gear pump or piston pump or even the pressure pot is widely used in painting industry, so what's the difference for each option? Let's describe using the most simple words and logic for quick understanding. Diaphragm pump - Diaphragm pumps feature a flat, diaphragm inside of a housing held together by screws. When pumping,…

Electrostatic spray gun is widely used for high end spraying. But it's not easy to have it working well while a good operation will improve the coating efficiency. Following we will provide a quick guide of electrostatic spray gun operation and tips of maintenance. Before spraying Electrostatic spray gun and it's related equipment should be cleaned and in normal working condition. Compressor is ready with air dryer and oil filter with safe connection to spraying equipment. Before we start spraying, we should inspect the following: if all cables and tubes are properly connected if the electrostatic generator is well grounded close the paint cycling valve then put the paint supply tube into supply drum workpiece must be conductive on conveyor To reach the desired atomization, we should set correct air…

Water base paint is the most eco friendly choice for modern coating solutions. However it's not just a simple replacing of paint to fit directly with existing painting line system. Some crucial parts has to be configured separately in order to follow its specific requirements. Here we introduce 3 most crucial parts of water base paint application. Paint Mixing & Piping Water is corrosive medium for metal. It will lead to equipment damage and generate metal ions, which will not only make the paint film yellow but also reduce its anti-corrosion ability. For this reason, the water base paint container and pipeline should be made of stainless steel and should be chemically passivated. Low shear type model should be selected for the paint mixing system, mixer and back pressure regulating…

PLC programming control over spray gun is modern choice of painting system configuration. With a central control panel by logical touch screen programming we can easily regulate spray guns by preset functions such as on/off, color changing and cleaning etc. All parameters can be saved in memory for quick application. The work principle: PLC program over action switch, fluid atomization, color switch and liquid level alert etc with digital display. HMI screen central operation over all programmable functions. Basic functions Move forward or continuous spraying FAN/CYL ratio control and spray gun on/off Automatic color change and cleaning (optional) Paint mixer speed control Advantages Single or multiple spray guns central control Up to 100 configurable properties for precise control Complete color change programming Complete fluid ratio control Flexible soft tube connection…

Soft touch coating /paint is also known as rubber coating, is ployurethane based two part industrial grade material. It's widely used on decorative items surface finishing such as game handle, mouse, hair dryer, pen and electronic devices etc. Unlike those traditional coatings, there're specific process of rubber coating application. Here we'll provide detailed guides how to handle the process in professional way. Soft touch coating properties Test Item Method Common Advance Adhesion 1MM² Cross-Cut 100/100 100/100 Hardness Mitsubishi Pencil HB 1H Hand sweat resistance By hand 48 Hr no change 96 Hr no change Alcohol Test 99.7% Alcohol wiping ≥100 200 Abrasion resistance 500g press 200S no change 400S no change Humidity resistance 40℃*98%RH*240H No change No change Heat resistance (-30℃*2h~60℃*2h)*40S No change No change Shampoo 50% 200S no change…

Infrared curing technology applies radiant energy to the part surface by direct transmission from an emitter. Infrared heats what needs to be heated, not the surrounding air, taking less time and energy to do the job. Infrared can cure a variety of finishing applications, from oddly shaped objects to demanding substrates and difficult coatings, for liquid or powder. Electric infrared oven provides modular design, has been engineered for use with all coating types and can be configured to meet all parts sizes and shapes. It's available in a full range of efficient wave length control for rapid, uniform heat up and accurate input temperature control. Either for preheat or flash off in painting line system, it's particularly effective where increased line speeds and multiple control zones are required to achieve…

Comparing to those crucial electric components, tube is not a seriously concerned part for spray painting system configuration. However, a lot of people are still in puzzle when selecting, such as how to choose the type of tube between air and paint. Incorrect selection will bring direct problem of high efficient spraying and maintenance. Here we will take a comprehensive look at how to choose a tube and explain the difference between a paint and air tube. In spray painting industry we mainly use the following 3 types tubes: PU air tube: made by high-resilience polyurethane material, it comes with excellent soft properties and usually used for air tube connection. PE tube: corrosion-resistance, the material is harder than PU. Double layer tube: the outer material is PU and inner Teflon,…

Coatings are accompanied by various dangerous and harmful elements whether during handling or application. Paints may contain hazardous substances therefore classified as dangerous goods. In the process of application, contact or accidental ingestion may cause injury and disease. These hazardous substances also include thinners, degreasers, paint strippers and dust from surface preparation. The main hazards during painting operations are fire and explosion, followed by the hazards posed by the equipment used, electricity, pressurized paint, heavy paint containers and noise. Harmful materials Hazardous substances include paints, thinners, cleaning agent, degreasers, paint strippers, and products used for surface preparation. Exposure to these harmful substances may cause short-term or long-term health issues. Short-term issues include irritant dermatitis; skin and eye burns; vomiting; nose, throat, and lung irritation; headache, dizziness, fatigue. Long-term effects such…

In order to make the metal surface better or for specific application, we always need to spray painting. According to the different properties of different metal pieces, the selection of surface coating and cleaning process is also different. Following we will explain the suggested pretreatment solutions for steel, galvanized steel , aluminum and other soft metals as well as alloy steel. 1- Steel The most effective way to clean unpainted steel is by solvent cleaning or steam cleaning after blasting. Actually according to SSPC standards, it requires solvent cleaning priorior blasting. Sandblasting is recommended for cleaning damaged areas. Water type sandblasting is good option where dry blasting is not acceptable. 2 - Galvanized steel Recommended cleaning methods for galvanized steel vary depending on surface conditions. Simple solvent cleaning of new…