Polishing paste is usually an abrasive mixture that includes micropowders and binders of a solid or ointment consistency. You can consider the properties and features of this material.
Main characteristics
Polishing paste can belong to one of two groups: water, fat-free or fat. The non-abrasive part of fatty compositions includes fatty acids, paraffin, oils and other components, that is, those that are not washed off by water under normal conditions. Such pastes can be easily removed with a dry clean cloth at the final stage of polishing. However, it is best to pre-test on a small surface area how well they are removed.
Features
Often the abrasive part is crucial for the area of application of the composition and its name. When micropowder of cubic boron nitride is included in the composition, polishing paste is called cubanite or elbor. In diamond compositions there are powders of diamonds of artificial or natural origin. In addition to powders, pastes usually include surfactants, fats, binders, etc. They are applied in a thin layer to the polishing tool used. It is customary to distinguish pastes by purpose: for polishing non-ferrous metals, hardened steels and other materials.
Polishing paste must meet certain requirements:
- guarantee a smooth surface with a mirror finish;
- be strong enough and viscous, as well as have a uniform composition;
- hold firmly on the working surface of the polishing wheel;
- Do not crumble or crumble, scratch or contaminate the surface to be treated.
Abrasive polishing paste
Aggressiveness of additives often depends on where the composition is to be applied. In processes such as milling, turning, drawing metal, as well as similar ones, relatively unstable compounds can be used, because corrosion in this case plays an insignificant role. But with ultra-thin abrasive lapping treatment, increased chemical corrosion can be caused.
A bunch of pasta is selected depending on the operation for which it is developed. Active additives, stearic and oleic fatty acids, as well as a fat base, are included in the paste bunch. A certain hardness of the composition is achieved by the addition of paraffin. As the main chemical reagents that contribute to the activation of the refinement process, stearic and oleic acids can be called.
Polishing paste, the price of which is from 1000 rubles (depending on the destination), includes non-abrasive components that play the role of a bundle in it. The composition of the ligament usually includes special intensifiers that prevent increased consumption and increase the utilization rate of the cutting properties of abrasive grains. With light pressure, they melt well exclusively in the cutting zone, keeping in a circle.
Polishing paste often contains dielectrics in its composition, which increase its productivity.