Category: Tutorial

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…

Pneumatic spray guns are generall available as high-pressure and low-pressure spray guns according to air consumption. Usually, we use 0.2Mpa to judge whether the spray gun is a high-pressure or a low-pressure model. High-pressure spray gun: effective air pressure is about 0.4-0.5Mpa, it is the air pressure range of general pneumatic spray guns. It's a relative term to low pressure guns. The main feature is its strong atomization ability. It's able to quickly spray over products in different industries at large area which will greatly improve our work efficiency. But the big weakness is high rate consumption of coating. Low-pressure spray gun: As the name tells, it's able to atomize the paint well under low air pressure condition. The shinning point is there's no bounce back paint due to high…

Photo-catalyst paint or known as self cleaning paint is a special coating on building glass or ceramic production. This coating can create a super-hydrophilic glass surface, lubricate the glass when it rains, and take away contaminants such as dust through the sliding of the water film, it also has anti-fog and antibacterial effects. Once the glass or ceramic is painted by this type coating, there is no need for regular cleaning by workers. The photo-catalyst coating is great in performance but it's not easy to apply well on glass. We need either a professional technician or use a pre-programmed robot to spray properly for mass production purpose. Following is the coating spraying requirements To spray photo-catalyst coating perfectly under mass production, it's normally by conveyorised automatic painting system. One set…

Under some specific spray painting area such as polyurea and glue application, the liquid viscocity is quite high. The traditional pneumatic paint pump is not workable, especially when the paint or glue will be a problem of cleaning. Thus for such liquid spraying, we normally suggest pressurized pot or airless pump. Here we will introduce one advance choice for glue spraying - Timmer glue pump. Timmer glue pump is a piston pump with inside electric heater and control. liquid glue can be steadily supplied with digital displaying on control panel. As long as compressed air is powered in, glue can be delivered via pipelines. Fluid rate can be easily adjusted by valve. This Timmer-PTI-D2 glue pump specification as follows. General properties Drive Pneumatic - self suction Height capacity ≈2mWS (20…

Coating is a crucial stage of pipes for long life cycle. Especially under some special applications like gas and liquid transportation, it has special treatment requirements. Following we briefly introduce the popular five solutions used in pipe production industry. 1- Dry coating It's mostly used for pipe inside coating. Means the solvent must be fast drying. Under this application, air pressure is relatively high while paint volume is small and wet rate is high. After spraying, the paint will dry fastly. This is regularly for base coating and metallic coating. 2- Wet coating It's the opposite of dry coating. The solvent will dry slowly under low air pressure and high volume paint rate application. It requires curing in dryer. 3- Wet on wet coating Means to apply coating without waiting…

Plastic can be produced to fit with various requirements for its high flexibility. In decoration industry, metalized surface is required on a lot of components and have various surface requirements. That means we need to use different treatment solutions to meet with such requirements by the most reliable and economical way. Plastic metalization technique is generally available as follows: Vacuum metalization, plating and nano coating. In this article we'll briefly introduce the 3 ways for its Cons and Pros and find out which one to use for a specific project. Vacuum Metalization A popular way of doing metalization that has a long history. It's a matured solution and the technology is still improving to fulfill up to date needs. Actually, vacuum metalization is not only compatible with plastic but also…

What is the global explosion-proof compliance standards? Explosion-proof certification is used to determine that equipment meets the requirements of explosion-proof standards, type tests and adaptive routine tests, and issuance of relevant certificates of conformity. The certificate can be for Ex equipment or Ex components. Equipment and protection systems used in explosive gas environments must comply with a number of regulations, standards and directives in order to enter the global trade market. It's critical to fully understand those compliance in order to hand over the equipment to desired area. Especially in paint spraying industry, many countries require explosion-proof compliance. The European Union’s ATEX certification adopts EN standards The ATEX explosion-proof directive 2014/34/EU used to regulate equipment and protection systems used in potentially explosive environments is a mandatory regulation among EU member…

Powder coating has high production efficiency, excellent coating performance and eco friendly advantages, has been widely used in the world with a 10% yearly growth rate. By ensuring the appearance of powder coating film and mechanical properties, the most concerned is consumption of powder coating, that is, the production costs, so powder coating loading rate is common concern from both manufacturer and end user. The principle of electrostatic powder coating Electrostatic powder coating is the use of high-voltage electrostatic corona electric field. Spray gun needle connected to the high-voltage negative (generally 60 to 100kV), workpiece is grounded to form a positive pole, so between the spray gun and workpiece there's a strong electrostatic field. when the powder coating is sent from the powder supply barrel to the spray needle through…