perforación de roca de 2 pulgadas

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.  

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1.Downhole drilling machine: When drilling a downhole gun hole with a aperture less than 150 mm, in addition to the application of a rock drill, it can also be used to drill a small diameter of 80 ~ 150 mm. When drilling a gun hole with a diameter of less than 70 mm in coal or softer mineral rock, it is generally used to drill or air drill, driven by a motor (or air motor) to drill the drill pipe, and the rock (coal) chips drilled out are discharged through the spiral groove on the drill pipe.

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В современных условиях многие отрасли требуют высокой эффективности и надежности оборудования для обеспечения производственных процессов. Одним из таких непреложных инструментов является дизельный воздушный компрессор с высокой производительностью, например, на уровне 200% CFM. В данной статье мы рассмотрим, что такое компрессор, как он работает, а также его преимущества и области применения.


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Directed drilling rods, often referred to as directional drilling equipment, are specialized tools that allow for the precise placement of wells at various angles. Unlike conventional drilling methods, which typically follow a vertical path, directional drilling enables operators to reach multiple reserves from a single drilling site. This not only optimizes resource extraction but also minimizes environmental impact by reducing the surface footprint.


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