цирковый насос

The DTH hammer operates through a system of compressed air. High-pressure air is directed down the drill string, powering the hammer at the end of the drill bit. The hammer strikes the bit with considerable force, fracturing the rock immediately beneath it. As the bit penetrates further, the broken rock is then cleared from the hole by the same air stream, allowing for continuous drilling without the interruptions often associated with other drilling methods.


...

In summary, the price of drilling machines is influenced by various factors, including type, specifications, brand reputation, market trends, and location. While the initial cost is an essential consideration, businesses should also evaluate the long-term value and total cost of ownership associated with their purchases. By selecting the right drilling machine that aligns with their specific needs and budget, businesses can ensure efficiency and productivity in their operations. This comprehensive understanding of pricing helps companies make informed decisions when investing in essential drilling equipment.


...

It is important to know that the shape of the sand has an important impact on the surface finish of the casting. Circular sand is better than triangular sand because the triangular sand has a large gap, which is easy to lead to defects such as porosity; According to the nature of the casting, the sodium silicate quartz sand is selected to form a spalling layer, and combined with the characteristics of cooling and shrinkage of the casting, the surface defects are reduced. Coating a protective layer on the surface of large castings, such as the film on a coated sand mold, can improve the surface finish of the sand mold and reduce the surface defects of the casting.  

...

Плитагийн хийцэд зориулсан технологи нь сүүлийн жилүүдэд хөгжсөөр байна. Одоогийн байдлаар автоматжуулсан системүүд болон дээд зэргийн технологитай материалуудыг ашиглан плитагийн чанар, бүтээмжийг нэмэгдүүлэх боломжтой. Эдгээр шинэ шийдлүүд нь сумын гулсах, сантехник, системийн ачаалал, давтамжийг үйлдвэрлэлийн явцад зөрчилдүүлэхгүйгээр хянах боломжийг олгодог.


...