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.  

The roller drill uses the rolling action of the roller bit to break the rock and is suitable for drilling holes of 150 ~ 440 mm in diameter on the hard rock. It has the advantages of high efficiency and low labor intensity, and is widely used in large and medium-sized open-pit metal mines. The drill consists of an impactor (or drill bit), a rotary mechanism, a lifting mechanism, a pressure device, a walking mechanism, a slag discharge system, a drill frame and a drill pipe. Rotary drilling machines are only suitable for drilling softer minerals and coal.

(6) The oil level and oil supply of the lubricator should be checked regularly; The gear with reverse structure is regularly filled with high-temperature grease; Check the oil level in the lubricating oil tank regularly and remove the dirt in the oil tank.

Jaw crushers play a crucial role in the operational processes of various industries, notably in mining and recycling. These machines are designed to break down hard materials into smaller, manageable pieces, making them essential for numerous applications, from aggregate production to ore processing. To fully appreciate how jaw crushers function, it's vital to understand the different mechanical parts involved in their operation.

Accurate calculations concerning the mud pump are vital for several reasons. First, underestimating the necessary flow rate or pressure can result in insufficient cooling and lubrication for the drill bit, leading to quicker wear or even catastrophic failure. Conversely, overestimating these values can lead to excessive costs and energy consumption.

Another notable benefit is their compatibility with various drill rigs. Many modern drilling machines are designed to accommodate drill rods of different sizes, and a 20mm rod fits well within this spectrum. This compatibility reduces downtime during rig setup and allows for faster transitions between different drilling tasks.

Jaw plates are commonly made from manganese steel, an alloy that boasts high wear resistance and toughness. Manganese steel typically contains between 11% to 14% manganese, which contributes to its unique and advantageous properties. The addition of manganese enhances the alloy's hardenability, allowing it to become exceptionally hard when subjected to heavy impacts. This characteristic makes manganese steel an ideal choice for high-stress applications, such as crushing abrasive materials in mining.

Advancements in Drilling Technology

China's manufacturing industry has developed a reputation for producing high-quality industrial equipment at competitive prices. Here are some advantages of sourcing heavy slurry pumps from Chinese manufacturers