I would certainly suggest evaluating the Stencil Cleaner, Pattern as well as Misprinted Board Cleansing Handbook. It’s a very good introduction of Stencil Cleaner techniques, available chemistry types, as well as procedure factors to consider. It will provide you different choices to take into consideration when matching with your process and requirements.
The drying technique you state might require to be evaluated if you are utilizing “shop” air, dryed or otherwise. If you are utilizing store air, that’s infamous for lugging compressor oil through the system, either by insufficient filtering or blow-by. Ko separators hardly ever do a good task of getting rid of the oil contaminants.
I would recommend either getting a committed cyndrical tube of “5.0” pressed air or nitrogen if you feel you have to dry out the stencil after the IPA cleansing method. Advance Tech has a rather quick dissipation price and the extra drying out might not be necessary.
This is not an uncommon process to see when cleansing a pattern. It is necessary to not abuse making use of IPA during the bottom side cleansing of the stencil. Stencil Cleaner if it enters contact with the solder paste or penetrates to the surface of the pattern might affect solder paste residential properties adversely.
Cleansing the Stencil Cleaner with a complete wipe down as well as a last pressed air blast is acceptable as long as all apertures are free from any type of solder balls as well as change after cleaning. A close evaluation of the finer apertures is important to see to it all the paste or solder rounds are eliminated.
There are automatic systems that clean the bottom-side of stencils as well as pattern cleansing machines to successfully wipe paste residues but hands-on methods are still used in several areas.
Some solder pastes depending on their chemistry may be far better cleaned down with a cleaner consisting of a mix of solvents. It is likewise less complicated to clean up a pattern if cleansing is initiated after conclusion of the printing procedure. Time allows Stencil Cleaner to dry out cleaning more difficult. Constantly a good idea to use a mask, safeguarding goggles as well as gloves when doing this operation.