In the finishing industry, there is a real connection between safety and quality-especially in terms of spray booths, which can run the potential risk of causing fire if not properly maintained. Equipment for dust collection is strategically created to meet specific needs in terms of performance, including airflow velocity; fan, filter and burner capacity; and safety regarding fire prevention and operator wellbeing.
However, once the manufacturer ships the machine, installation, operator training and maintenance get to be the responsibility from the finisher. Therefore, it is advisable to give both Ce Approved Car Spray Booth and associated processes a complete review for fire safety hazards along with other incidents that could occur.
Dust Collection – There are two sides of dust collection: quality and safety. A top quality finish is the direct reaction to adequate removing of airborne particles that may contaminate finished surfaces. This contamination causes rejects or rework of product which results in lost profits.
It’s not simply surface finish that particle build-up can impact, though. Or even cleaned, particles can migrate to places that operators may not have proper breathing protection, and fire becomes a real hazard. Sufficient airflow is essential.
The top causes of fire in dust collection systems include: static electricity discharge, exothermic reaction due to chemical reaction of collected dust,
cutting or welding too near the area.
The bottom line is to collect the dust having a well-designed dust collection system that contains a smart layout and balanced air replacement. As suggested through 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 into the facility. Outdoors dilution ratios for a facility also need to consider heat, off-gases, and odors from ancillary processes such as sanding or grinding.
Additionally, doors or pressurized plenums may be used to contain dust. A smart investment in containment is going to be reflected in less cash used on cleaning and correcting finish rejects.
Spray Finishing Systems and Booths – Hobby Spray Booth 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 eliminate particulate from the air, the right filter media or chamber is essential. Then, the fresh air supply has to be not only clean, but additionally in the correct temperature. More sophisticated coatings might also require humidity control. Not to mention, all equipment must be properly grounded.
The very best fire prevention may start with comprehension of so what can result in a fire in a spray booth. In a conventional system, leading causes of fire include:
using spark-producing equipment like cutting, welding or grinding near the spray area; friction, in most cases brought on by overheated bearings on the exhaust fan, or by rubbing of exhaust fan blades against overspray deposits on the wall in the duct; arcing electrical equipment;
spontaneous combustion; and discharge of static electricity.
In electrostatic spray operations, main reasons for fire include: ungrounded or improperly grounded objects in the spray area, failure to totally discharge equipment before cleaning, pinhole leaks in the paint tubing towards the spray gun, other causes comparable to conventional systems including smoking, cutting and welding.
Most of these situations are entirely preventable, and some of them connect with maintenance within the spray booth, an issue called outside in Chapter 10 of 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 very good information.
When spray booths and finishing equipment are installed, they fulfill the criteria for a quality job the very first time through. It’s as much as the store to help keep the device clean so that it meets that perfect, first-time performance each and every time. The program should enable: proper airflow to have overspray into the filters instead of on the booth floor, and proper filtration to help keep contaminants from the air but in addition to stop overspray buildup on the fan or even in the exhaust duct.
For excellent prevention standards, keep Powder Coat Spray Booth, modify the booth filters regularly, look into 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 inside the shop. Again, the best advice would be to keep the area clean and provide adequate intake air. Remove combustible deposits, and also to eliminate the risk of spontaneous combustion, be sure you hold the correct exhaust volume and purge time. Keep solvent load inside the oven underneath the “Lower Flammability Level,” and purge the oven before startup.
Exactly the same considerations for airborne contaminants should be placed on oven maintenance. Filtered recirculating air or filtered air seals can be critical, and both should be considered.
Airflow for ovens should 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 are available in many temperature ranges to suit any process.
Ovens, when employed for whatever they are designed are for, certainly are a safe operation since many solvents are evaporated and other airborne contaminants and combustible deposits shouldn’t be present. It’s really dangerous when a convection oven is 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
E-mail: [email protected]