Cleaning rods are brushes consisting of filament clamped between two metal wires twisted together. The result is a propeller-shaped brush (see picture). If the cleaning rod is to be mounted on mechanical equipment, the metal ‘shank’ is usually sheared off on both sides. If the use is manual, a part of the shank is left free of filament to be used as a handle, usually ending in a circular ring. The end of the brush can be folded over to make a small fan of filaments called a ‘rosette’, which serves to prevent the sheared wire from damaging the parts to be machined.
The main characteristic of pipe cleaners is the small core diameter, which makes them irreplaceable for internal cleaning of pipes, ducts and hard-to-reach crevices.
Brooms are used for :
- Cleaning and deburring holes, especially those smaller than 30 mm in diameter
- Cleaning curved channels, exploiting their flexibility
The special feature of the brush is that the work surface is made up of millions of individual elements, which are the ends of the individual filaments.
This gives the brush an adaptability that no other element, however deformable, can have.
It depends on various factors. In a nutshell, it can be said that 2 mm is a good compromise. The important thing is that the filaments of the brush work “at the tip” and not on the side.
Depending on the materials used and the dimensions, there is a tensile limit load that a single bunch can withstand.
Beyond this limit the bunch comes off, therefore the brush must be calculated according to the use. This limit can be greatly increased by building “sewn” or “tied” brushes by hand, where a continuous steel wire is placed instead of a single anchor element.
It can only happen if the brush has a manufacturing defect, like any other type of object (e.g. a roller made with silicone flakes, one of which is defective and breaks).
When it is important that no contamination occurs, it is advisable to use synthetic (non-natural) fibers with a diameter greater than or equal to 0.15 mm.
Virtually all degrees of hardness can be had, from very soft to very hard. In fact, the hardness is given by the combination between the diameter of the filament, its free length and the density of the bunches.
Of course, we can provide FDA or FOOD GRADE certifications and filament traceability.
Unfortunately not, as it is the machine + brush assembly that must be ATEX certified, not just the brush.
It is however possible to provide the materials that the certifier requires, eg. conductive bases, conductive filaments etc …
Generally speaking it is possible, but it is necessary to evaluate if it is economically convenient, and it is not always. Furthermore, in the case of a punched brush, it is not advisable to regenerate the brush more than twice in order not to reduce the holding of the bunches.