Abrasives & Chemical Division
NTC distributes the production range of Roditor & Philadelphia concerns abrasive compounds in solid and liquid version – for polishing and mirror finishing of various metals on manual, automatic and semi-automatic polishing machines – and buffs from 80 to 1600 mm. in diameter, made of sisal, cotton, Rodiflex, steel wire and tampico; with or without impregnation in many variations of manufacturing and assembly: simple sections, simple sections with stitching, ventilated, corrugated, stitched and pleated.
Rodiflex wheels, small buffs in sisal and cotton for cutlery, brushes and cylinders for the internal polishing of pots and pans, trays and sinks in stainless steel complete the range.
All the raw materials are selected to have the highest quality and the impregnation of the buffs are worked out in respect of the environment.
Our production range includes liquid and solid abrasive compounds for polishing, finishing and mirror finishing operations of metals, on automatic and semi-automatic polishing machines equipped with centralized feeding systems and also on traditional manual machines.
ABRASIVE / Liquid Compounds
Thanks to the homogeneity, the adherence to the polishing buffs and to the lubricating power that reduces the buffs wearing, our liquid abrasive compounds are suitable for the polishing and mirror finishing operations of various metals on automatic and semi-automatic machines, provided with a centralized feeding system.
The best way of using liquid abrasive compounds is that of spraying them with low or high pressure guns, by means of a centralized system – with pressure tank of 50 or 100 litres or tank “Siletto” with a pump – so as to obtain a light, regular and uniform supply.
ABRASIVE / Solid Compounds
The solid compounds with natural abrasives are suitable for the surface treatment of the brass and other alloys, while the solid compounds with synthetic abrasives have a high mirror finishing power on stainless steel and ferrous metals.
The supply of solid abrasive compounds is made by means of a pneumatic feeder – model “COSMEC”, applied on both manual and automatic polishing machines – which feeds the compound on to rotating buffs in such a way to obtain a perfect dosing, a correct pressure on the buffs, less waste of unused compound and, in case of manual machine, it allows the operator to have both hands free. The feeder can employ compound bars having the max dimensions of 160 mm., length 500 mm., height 50 mm
ABRASIVE / Various Compounds
The range of the various compounds includes specific solutions for special applications and operations, such as the tallow compound to lubricate the belts and the flap wheels of abrasive cloth; the solid compounds to bright finish polyester and plastic, marble, granite and polyurethane shoes soles.
ABRASIVE / Spraying and feeding system
The best way of using liquid abrasive compounds is that of spraying them with low or high-pressure guns, by means of a centralized system, so as to obtain a light, regular and uniform supply.
The supply of solid abrasive compound is made by means of a pneumatic feeder, mod. COSMEC, applied on both manual and automatic polishing machines.
ABRASIVE / Technical information
The abrasive compound must leave the tank at 4-5 atm; to operate low pressure guns use 5-6 atm; for high pressure guns follow the manufacturer’s instructions.
The low pressure gun sprays the compound at a force equal to that of the air supply to which it is connected (5-6 atm); the high pressure gun, which incorporates a multiplier, sprays the compound at a pressure 20-30 times superior than that of the air supply.
High pressure gun is necessary when the compound sprayed by a normal pressure gun is wasted by the polishing mops centrifugal force.
High pressure gun saves a lot of compound and due to the different angles of the nozzles (40°, 65°, 90° and 120° can be chosen) one single gun can spray the polishing wheel from 2 to 50 cm. wide.
The choice between the two types depends on the different purchase prices and the specific requirements of the work to be done.