Coating process: overview of powder coating process and product selection

Core tip: powder coating is a method of coating the substrate surface with powder material, heating it to a fluid state, then curing and covering the substrate surface to form a protective or decorative coating Powder coating has many advantages over traditional liquid coating, such as better environmental protection performance, thicker coating can be obtained once coating, various styles and so on Powder coating is also complex in some aspects, so it is necessary to select appropriate products and coating process according to different needs So how to do powder coating? 1 Procedure of powder coating 1.1 first determine the need for painting Paint knowledge how about Akzo Nobel Powder Coating Recommended introduction: powder coating is a kind of coating with different form from general coating, which is in powder form It is a new type of coating, because of its own advantages and more and more known by people Let's introduce Akzo Nobel Powder coating Akzo Nobel Powder coating is a cost-effective coating solution, which can be applied to different kinds of products After the treatment of static electricity and fire baking, a tough and durable coating surface will be formed, with the least impact on the environment Since the introduction of this technology, powder coating has been able to continue to maintain the Coating home news: powder coating is a method of coating the substrate surface with powder material, heating it to a fluid state, and then curing to cover the substrate surface to form a protective or decorative coating Powder coating has many advantages over traditional liquid coating, such as better environmental protection performance, thicker coating can be obtained once coating, various styles and so on Powder coating is also complex in some aspects, so it is necessary to select appropriate products and coating process according to different needs So how to do powder coating? 1 Step 1.1 of powder coating first determine the type of substrate to be coated Powder coating can be divided into two types: thermoplastic type and thermosetting type It is necessary to select appropriate powder coating according to different substrates to achieve the best coating effect 1.2 before painting, dismantle all threads or lubrication joints and all parts that do not need painting It sounds simple, but many people forget this step Powder coating will adhere to all things, including screws, nuts, bearings and other parts that do not need coating 1.3 thoroughly clean metal surfaces Use shot blasting or sand blasting to remove the dirt and rust on the surface Clean the grease and coating on the surface with chemical solvent, and polish them If necessary, aluminum, magnesium and other soft metal alloys can be cleaned with solvent and polished with wire brush 1.4 apply the powder coating on the surface of the substrate By using a spray gun or compressed air sprayer, the charged powder coating is absorbed on the surface of the grounded substrate The price of the gun is recommended by the supplier for a minimum of 100 US dollars In the experiment, the powder can be directly sprayed on the surface of the metal plate 1.5 select appropriate temperature to cure the powder coating attached to the substrate Oven can be used for curing, generally can be used for small size metal substrate, large-scale substrate can also be cured by infrared or other flameless heat source Generally, the object is heated to 175-190 ℃, about 10-15 minutes, and then cooled 2 The difference between thermoplastic powder coating and thermosetting powder coating 2.1 the thermoplastic powder coating can be remelted and solidified, but the thermosetting powder coating can not be remelted and solidified after curing, which is the most obvious difference between the two As the names of the two, the reason why thermosetting powder coating can not be re cured is that there is an irreversible chemical reaction In contrast, there is no chemical reaction during the curing process of thermoplastic powder coating 2.2 the choice of coating depends on the characteristics of the substrate to be coated Thermoplastic and thermosetting powder coatings are used for different substrates due to different chemical properties Thermosetting powder coating: it can strengthen the integrity of the substrate, apply to the substrate that will be severely worn, and provide chemical resistance and heat resistance Thermoplastic powder coating: can provide strength and flexibility, commonly used in plastic (9310, - 45.00, - 0.48%) and mechanical parts 2.3 advantages and disadvantages of thermosetting powder coating Generally, thermosetting powder coating is used for heat-resistant substrate Advantages: beautiful coating; low cost; good coating stability and heat resistance Disadvantages: the irreversible curing process means that the coating can not be recycled and it is difficult to be remelted and solidified 2.4 advantages and disadvantages of thermoplastic powder coating Thermoplastic powder coating is generally used on the base material of plasticity and durability similar to park bench, and it is also widely used on the outer surface of metal pipes Advantages: high lubricity; can be remelted and solidified; increase impact resistance disadvantages: Generally speaking, high cost; heating may melt Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,