Eliminate all potential sources of ignition. Stoving ovens 15 application equipment 15 ventilation and ducting 16 coating powder collection equipment 16 4.
Maintain a powder air concentration well below the minimum explosion concentration m e c of the powder being sprayed.
Powder coating oven safety. Manufacturers review chemical substances to determine if they are carcinogenic toxic an irritant dangerous to human organs flammable explosive or reactive. Most batch powder coating ovens are rated for sustained operation at temperatures of up to 450 f while some more expensive models are rated up to 500 f or higher. This information is available to workers in the material safety data sheets msds that are supplied with materials.
A properly designed and maintained powder coating oven is absolutely necessary for a quality finished product. Safe efficient design and operation of an electrostatic powder coating system is based on three fundamental rules. Powder coating safety products.
Learn how to powder coat how to choose a custom coater build your own powder coating oven how to coat over galvanizing the characteristics of different powder formulations oven maintenance pretreatment and masking considerations how to manuals and more. Incorporate and maintain appropriate safety features in the system. If you own a conventional 450 batch oven jumping up from 380 to 480 in an attempt to save a few minutes of cure time will harm the equipment possibly trip the safety devices leading to downtime and potentially damage the finish on your parts.
You can also use a gas oven just keep in mind that a cloud of powder has the potential to be flammable so powder coating in an enclosed room with no ventilation right next to your gas oven is a practice that should be avoided. Shield your powder coated part from any open flame and never spray the part while it is in the oven. Examples of antistatic floor layouts around spray booths 19 appendix 1.
Methods for the calculation of the concentration of a coating powder in a spray booth 20. All powder coating materials are finely ground particulates. Systems of work 17 figure 1.
Powder materials are thermally reactive by design meaning that heat will change them. The heat required to transform the powder material from its powder form to a solid thermosetting finish comes from an oven.