For normal working with Kupershlak, you need to know what the consumption of abrasive powder for sandblasting on 1 / m2 of metal structures (metal). It is also necessary to deal with the class of danger of this substance, with other features of its application. A separate topic – the choice of Kupershlaka Karabash Plant and other manufacturers in Russia.
What it is?
There is a huge amount of goods and products surrounding people. Along with extensively used or simply known in general terms, a significant role can also play those things about only narrow specialists. Such is Kupershlak (occasionally meets the name of the castle, as well as mineral fraction or grindzer). Now this product is very widely used for abrasive-free cleaning.
Partly similar to him Nickelschlak, distinguished only by high hardness.
How to make Kupershlak?
Often you can read that Cooker Slak is a copper slag. However, in fact, he refers to the number of synthesized materials. To obtain such a product, first really take slags resulting from copper melting. Semi-finished products are mechanically crushed in water, after which they dried and sift. As a result, the final composition does not contain copper, because it is trying to maximize it from ore and use in production.
Abrasive billets based on copper slags are taken to marke as Abrasive ISO 11126. Separate marking is prescribed for non-metallic products. There may also be a designation / G, which speaks about the form of an abrasive particle. Further numbers show what the cross section.
The established standard says that the cuerchlack particles cannot be larger than 3.15 mm, however, and the share of dust, that is, fragments less than 0.2 mm should have a maximum of 5%. It is worth noting that in some cases they are trying to use the exhaust Coopershlak repeatedly. This allows you to save many valuable resources. Practice has shown that it is possible to restore performance for 30-70% of the spent abrasive, depending on a number of circumstances.
Sophisticated apparatus for pumping recyclable usually do not need. Move along pipes to the crash it can and due to the strength of gravity. But it is characteristic mainly for semi-pedars.
In the industrial class devices, pneumatic or mechanical abrasive collection systems often use, of which the redeference enters the sorting unit.
Characteristics and properties
On the supplied Coopershlak (both primary and secondary row), a quality certificate must be issued. It reflects the basic parameters of the supplied product. The abrasive complex includes such chemical fractions:
- silica monoxide from 30 to 40%;
- Aluminum dioxide from 1 to 10%;
- magnesium oxide (sometimes for simplicity is referred to as Luggy Magnesia) from 1 to 10%;
- Calcium oxide is also from 1 to 10%;
- Iron oxide (he is avalast) from 20 to 30%.
Kupershlak is made up of dark acute-angular particles. Its density in bulk calculus ranges from 1400 to 1900 kg per 1 m3. At the same time, the true density rate varies from 3.2 to 4 grams per 1 cm3. Moisture content in the norm does not exceed 1%. There may be up to 3% maximum for extraneous enclosures. According to GOST, not only the proportion, but also the other technical indicators of the product. So, the share of lamellar and needle types may have a maximum of 10%. The indicator of specific electric permitability is up to 25 ms / m, and the exceeding parameter is not recommended.
The regulatory hardness of the MoSoic scale is up to 6 conventional units. Normated and the entry of water-soluble chlorides – to 0.0025%. Other Important Parameters: The level of abrasive ability from 4 and strength dynamic not lower than 10 units. Many people are naturally interested in the danger of Kupershlaka. Sandblasting is accompanied by a release in the air shallow suspension, and it is potentially able to cause harm to living organisms. And in this respect Kupershlak pleases: it refers to the 4th class of danger, that is, to the category of practically safe substances.
According to GOST for such reagents and abrasives, the following MPCs are installed:
- concentration in the air at the place of production of works over 10 mg per m3;
- fatal dose by swallowing 5 grams per 1 kg of body weight;
- fatal dose when entering an unprotected skin of 2.5 grams per 1 kg of body weight;
- Critically dangerous concentration in air, threatening life – over 50 grams per 1 cubic. m;
- The coefficient of air poisoning less than 3.
To track the presence of Coopershlaka in the air, gas analyzers are used. Sampling for a detailed laboratory study should be carried out at least 1 time in 90 days. This rule is also valid in industrial premises, and open work sites.
It is advisable to apply personal protective equipment during cleaning work. Create a drainage to sandblasting with a closed cycle.
Quartz sand comparison
The question “What abrasive is better” alarming of many people. You can only answer it with attentive analysis of technological nuances. When quartz grades are beaten over the surface, a large number of small dusty are formed. Their dimensions range from 15 to 30 microns. Along with the quartz, these dust can be clay, and impurities after breed destruction. Such inclusions can be clogged into the gaps of the peak of the treated surface. Pull them out from there with brushes, but this procedure, causing a significant overrun of money and time, does not allow to achieve perfect quality. Even the smallest residue of quartz provokes fast corrosion steel. Attempts to solve the problem with painting give only a short-term continuity effect.
Kupershlak is guaranteed to remove the likelihood itself the appearance of harmful dust. When you hit this abrasive, only partial destruction occurs. The probability of formation of a pronounced dust layer is minimized. If dust remains, sandy, then they are very easily cleaned due to compressed air supply. For such an operation, no additional specialists are needed, and you can do the minimal labor costs. Leading experts and companies report that it is Kupershlak that is optimally suitable for working with surfaces. The expected warranty period for purified by this method is up to 10 years. In some cases, it is even twice the longer. But there is another fact that you often underestimate. Namely, that in 2003 by the decision of the main sanitary doctor of Russia sandblasting with dry ordinary sand is officially prohibited. She is too dangerous for health.
Quartz dust includes pure quartz and silicon dioxide. Both components, to put it mildly, it is difficult to call health benefits. They cause such a formidable disease like silicosis. The danger concerns not only directly occupied in sandblasting (they are usually protected by special costumes, respiratory protection means), but also those who are nearby. A serious risk applies to all those who turn out to be within a radius of 300 m (when registering and air flow rates).
Silicosis is not treated with even modern medical interventions. No wonder in a number of states, cleaning surfaces with jets of quartz sand fell under the ban still in the last century. Therefore, the use of Kupershlaka is also an important security guarantee. Increased value it is fully justified:
- almost three times more quickly cleaning surfaces;
- reduction of consumption per unit surface;
- the possibility of secondary and even three-time use;
- less worn equipment used;
- reduction of labor costs;
- The possibility of cleaning the surface according to the international standard SA-3.
In Russia, the dominant positions on the production of Kupershlaka occupies a Karabash abrasive factory that in the city of Karabash. There is a full cycle of the production of the finished product. The company is also engaged in the implementation of its own products through the Karabash Abraziva trading house. Shipment usually goes in bags. The company also realizes a lot of sandblasting and working on the same principle of coloring equipment, consumables for such devices.
Uralgritis (Yekaterinburg) has significant positions on the market. There is a complete set of everything you need for anti-corrosion protection. The release of abrasive powders and equipment for the use of UralGritis has been engaged in over 20 years. Availability of warehouses throughout the Russian Federation allows you to quickly get the necessary product. The supplied products makes it possible to immediately deploy sandblasting.
Sending goods is possible both by rail and highway.
Abrasive powder for sandblasting is very important when you need to get rid of rust and signs of scale. The same composition is used in the preparation of various surfaces to staining, processing anti-corrosion mixtures. Kupershlak is suitable for pure concrete, reinforced concrete, metal, natural stone, ceramic and silicate brick. Apply abrasive from waste copper production
- in the oil and gas sector;
- in works with other pipelines;
- in construction;
- in various branches of mechanical engineering;
- In cleaning bridges and other extended metal structures (and these are only the most frequent and obvious examples).
It should be borne in mind that Kupershlak cannot be used in aquarium. Meanwhile, some unscrupulous sellers implement it for such a goal. Aquarisists note that the beeps of Kupershlaka inevitably leads to poisoning of all the inhabitants of the vessel. Even the most endless fish may die. The main reason is excessive metallization.
Abrasive can be used for river processing, ships. This composition is suitable for the processing of walls in residential and non-residential premises. It is used to clean the damaged and frosthed parts of objects when repairing. Very small powder fractions are suitable for cleaning aluminum. It will be possible to successfully remove the residues of rubber, paints and varnishes, solidol, fuel oil and many other unwanted components.
Cleaning is possible in everyday mode, and to fight for those who have solved pollution.
Cover spending rate in various situations varies from 14 to 30 kg per 1 cubic. m of the surface purified. Much, however, depends on the requirements. So, if you just need to bring the surface of the metal to the state of SA1, and the pressure does not exceed 7 atmospheres, will be spent from 12 to 18 kg of composition. With increasing pressure of more than 8 atmospheres of the cost of 1 / m2 of metal structures, it will range from 10 to 16 kg. If cleaning is required to SA3, the recommended numbers will be 30-40 and 22-26 kg, respectively.
The speech about the recommended indicators is because there are no strict regulatory requirements and in risen. Standards cannot regulate also the consumption of abrasive per M3. The fact is that practical work faces a large number of influencing factors. An important role is played by the degree of surface clogging and a specific type of metal, the Kupershlaka fraction, applied equipment, the qualifications of performers of work. To reduce costs, you need:
- acquire only a flawless product;
- use professional equipment and monitor its health;
- stimulate material savings with sandblastiers;
- monitor the order of storage of abrasive raw materials;
- Equipment Equipment Remote Control Systems Abrasive Stream.