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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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venda de barras de perfuração2025-08-14 16:44
1543

Submarine hammer drilling represents a significant advancement in underwater drilling technology, offering effective and efficient solutions for a variety of applications. Its capacity to penetrate tough materials, versatility in use, and adaptability to different projects underscore its importance in maritime engineering and natural resource exploration. As industries continue to evolve and adapt to the demands of underwater construction and resource extraction, submarine hammer drilling will undeniably play a pivotal role in shaping the future of marine operations. The continued research and innovation in this field will likely expand its capabilities and applications, ensuring that it remains a crucial technique in the modern engineering landscape.


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venda de barras de perfuração2025-08-14 16:12
2481

DTH drilling refers to a method where the drilling bit is located at the end of a drill string, below the surface of the ground. This technique is distinguished by the use of high-performance percussion hammers, which are positioned on the drill bit. DTH drilling involves the use of compressed air to deliver rapid impacts, breaking rock into smaller fragments. This method is particularly effective in hard rock formations, making it a preferred choice for mining operations and various drilling applications.


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venda de barras de perfuração2025-08-14 16:00
1950

In recent years, the industrial landscape has undergone significant transformations driven by the need for efficient equipment and reliable performance. Among various tools that have gained prominence, air compressors have become invaluable assets across various sectors such as construction, automotive repair, manufacturing, and even home improvement. Among these, the 185 cubic feet per minute (CFM) air compressors have set a benchmark for functionality and versatility. This article will explore the features, applications, and growing demand for 185 CFM air compressors, often regarded as the workhorses of the industrial sector.


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venda de barras de perfuração2025-08-14 15:54
1727

In terms of operational costs, the 185 CFM portable air compressor is designed to be fuel-efficient. Modern models often incorporate advanced engine technology that not only conserves fuel but also reduces emissions, making them more environmentally friendly. By optimizing fuel consumption, users can save on operating expenses while minimizing their ecological footprint. Additionally, the investment in a high-quality air compressor often pays off in the long run due to reduced maintenance costs and increased productivity.


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venda de barras de perfuração2025-08-14 14:44
2872