Within the finishing industry, there is a real link between safety and quality-especially in terms of spray booths, which can run the risk of causing fire if not properly maintained. Equipment for dust collection is strategically created to meet specific needs with regards to performance, such as airflow velocity; fan, filter and burner capacity; and safety regarding fire prevention and operator wellbeing.
However, when the manufacturer ships the equipment, installation, operator training and maintenance get to be the responsibility from the finisher. Therefore, it is advisable to give both the Furniture Painting Room and associated processes a complete review for fire safety hazards as well as other incidents which could occur.
Dust Collection – There are two sides of dust collection: quality and safety. An exceptional finish will be the direct result of adequate removing of airborne particles which could contaminate finished surfaces. This contamination causes rejects or rework of product that leads to lost profits.
It’s not simply surface finish that particle build-up can affect, though. If not cleaned, particles can migrate to places that operators might not have proper breathing protection, and fire gets to be a real hazard. Sufficient airflow is essential.
The best reasons for fire in dust collection systems include: static electricity discharge, exothermic reaction as a result of chemical reaction of collected dust,
cutting or welding too near the area.
The end result is to accumulate the dust having a well-designed dust collection system that boasts a smart layout and balanced air replacement. As suggested by the National Fire Prevention Association (NFPA): “Air flow needs to be carefully considered.” Criteria for dust collection processes usually include air velocity in the booth of 125 to 150 FPM. If properly filtered, this air could be recycled back into the facility. Fresh air dilution ratios for a facility also need to consider heat, off-gases, and odors from ancillary processes like sanding or grinding.
Furthermore, doors or pressurized plenums could be used to contain dust. A smart investment in containment will likely be reflected in less cash spent on cleaning and correcting finish rejects.
Spray Finishing Systems and Booths – Water Painting Cabinet have several their particular specific requirements for safety and quality. First, sufficient and laminar airflow is required so the exhaust can capture overspray and pull it to the filtration systems, which can be either a dry filter or perhaps a water wash. To get rid of particulate through the air, the proper filter media or chamber is important. Then, the new air supply must be not only clean, but in addition in the correct temperature. More sophisticated coatings may also require humidity control. And naturally, all equipment has to be properly grounded.
The very best fire prevention may begin with comprehension of exactly what can result in a fire in a spray booth. In a conventional system, main reasons for fire include:
using spark-producing equipment such as cutting, welding or grinding near the spray area; friction, typically caused by overheated bearings on the exhaust fan, or by rubbing of exhaust fan blades against overspray deposits on the wall of the duct; arcing electrical equipment;
spontaneous combustion; and discharge of static electricity.
In electrostatic spray operations, leading causes of fire include: ungrounded or improperly grounded objects inside the spray area, failure to fully discharge equipment before cleaning, pinhole leaks inside the paint tubing for the spray gun, other causes similar to conventional systems such as smoking, cutting and welding.
Most of these situations are entirely preventable, and some of them connect with maintenance inside the spray booth, a problem called out in Chapter 10 from the NFPA 33: Standard for Spray Application Using Flammable or Combustible Materials. The section covers general maintenance requirements, removing of combustible deposits, maintaining high-pressure hoses, waste containers, clothing and cleaning operations amongst other excellent information.
When spray booths and finishing equipment are installed, they fulfill the criteria for any quality job the first time through. It’s up to the store to keep the program clean to ensure that it meets that perfect, first-time performance every time. The system should allow for: proper airflow to have overspray into the filters instead of on the booth floor, and proper filtration to keep contaminants out of the air but additionally to prevent overspray buildup on the fan or in the exhaust duct.
For excellent prevention standards, keep Automotive Car Painting, modify the booth filters regularly, check the fan and stack for buildup, guard against static electricity and browse the NFPA 33.
Paint Curing or Drying Ovens – Infrared and convection ovens employed for paint curing or drying are another obvious fire hazard in the shop. Again, the best recommendation would be to keep the region clean and provide adequate intake air. Remove combustible deposits, and also to eliminate the risk of spontaneous combustion, make sure you have the correct exhaust volume and purge time. Keep solvent load within the oven below the “Lower Flammability Level,” and purge the oven before startup.
The identical things to consider for airborne contaminants should be placed on oven maintenance. Filtered recirculating air or filtered air seals may be critical, and both should be considered.
Airflow for ovens must have sufficient exhaust to evacuate solvent vapors and smoke. Also, analyze product conveyance and design the airflow in the oven to reduce stirring or tracking in dirt. Intake and mkmozc filters can be purchased in many temperature ranges to fit any process.
Ovens, when utilized for what they are designed are for, really are a safe operation as most solvents are evaporated and other airborne contaminants and combustible deposits shouldn’t be present. It’s really dangerous whenever a convection oven can be used for other means, such as to evaporate solvents by the drum-load, harden booth filters or ‘treat’ other waste deposits.
SD Longxiang with a professional team for designing and manufacturing spray booth, we try to support the products and service packages for every customer with their customized request, we are not only supply the products, we supply are designer for your painting and spraying works, we supply the solution that helps you work smarter, save time and money and achieve outstanding results, now and in the future.
Shandong Longxiang Machinery Co., Ltd.
Address: Longyao Industrial Park, Xinzhai Township, Zhangqiu district, Jinan city, Shandong, China