The abrasive powder is known in various industries under names: kupershlak, mineral fraction, shlifzerno, etc.
The abrasive powder is intended for jet clearing of following surfaces:
Metal - removal of old covers, scales, rusts, surface preparation before sheeting drawing;
Brick, concrete, stone - removal of the destroyed and defrozen plots at repair, and also before coloring, grinding of floors.
Processing of surfaces by an abrasive powder is carried out peskostruynyim, a hydroabrasive or ardently-abrasive method.
According to required technology of drawing of sheetings of foreign manufacturers Ameron®, Hempel®, Teknos®, Tikkurila® and other, and also some Russian manufacturers surface preparation should be carried out by an abrazivno-jet method with application of an abrasive powder. By surface preparation by an abrasive powder a number of manufacturers furnish a guarantee on the covers till 10 years, and on some covers till 20 years.
In comparison with the other materials used in given technologies, the abrasive powder has a number of advantages. For example, at comparison of characteristics of an abrasive powder and quartz sand it is possible to reveal advantages on several indicators, comparisons are resulted in the table:
Characteristics
Abrasive powder
Quartz sand
The maximum cleanliness of a surface (SIS 05 59 00 or ISO 8501)
Sa 3
Less Sa 2
The cost of an abrasive necessary on clearing 1m2 surfaces, kg.
30
100
Sanitary restrictions
No
Causes the prof. disease of respiratory ways and lungs (silikoz)
Use abroad
It is widely applied
It is forbidden
Productivity m2 at an o’clock
17
6
The cost of an abrasive powder in comparison with quartz sand in 3-4 times is less, and productivity in 3-4 times above. At use of an abrasive powder time of fulfilment of anticorrosive works is considerably reduced, hence, besides economy of an abrasive material expenditures of labour are reduced also.
At blow of particles of quartz sand about a processed surface the considerable quantity of a small dust in diameter of 15-30 micron which except pollution of a working zone is hammered between peaks of the processed surface covered on 70-85 % particles of quartz sand is formed. For removal of these particles realisation of labour-consuming operations on obespyilivaniyu (washing off by water with a high pressure) which attract expenses of money resources and time is required. Absence of such operations leads to formation of intervals between cover and the processed surface owing to what metal begins korrozirovat, and in 2-3 years occurs otsloenie anticorrosive cover. Application of an abrasive powder removes the given problem as the structure of grains and their diameter after blow interfere with dust formation on the processed surface. By the conducted tests it is proved, that after peskostruynoy surface clearings by an abrasive powder the surface is covered by small particles of an abrasive powder on 15-20 %, and the given particles completely leave brushes or obduvom surfaces.
The abrasive powder is packed into soft containers MKR 1 (big-beg) by capacity 1 ton with polyethylene loose leaves. Water-proof packing, supplies possibility of storage of an abrasive on the open area, including under adverse weather conditions (a rain, snow) without change of properties.
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