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.  

Advantages of DTH Hammers

3. Durability Typically, 185% compressors are constructed from high-quality materials designed to withstand tough working conditions. They are resistant to wear and tear, ensuring longevity and reducing the frequency of replacement or repairs.

በቅርብ እንዲሕ ውሳኔ ቢይኖሪ በሚይukkut አነሳምይክቶቱ ለምርም ዳሩ ዬይወዛ፡፡

Furthermore, the dimensions of the 20mm drill rod provide a perfect balance, ensuring that it is neither too bulky nor too fragile. This balance allows for efficient drilling without excessive energy consumption. The weight of the rod also plays a crucial role in its transportation and handling, making it easier for workers to maneuver it on-site.

1. Mining Industry In mining operations, heavy slurry pumps play a critical role in the extraction and processing of minerals. They are used to transport slurries containing ores, which can be heavily loaded with solids. These pumps facilitate the movement of material from the mining site to processing plants, significantly enhancing operational efficiency while reducing the risk of equipment damage due to the abrasive nature of mine slurries.

(1) When using the drilling rig to drill, the driver should be placed in the drilling position, so that the front end is against the rock, and the distribution should be careful to let the drilling rig move forward, so that the drill bit touches the rock; When opening the hole, first quietly let the drilling rig drive, when the drill rod is in place in the rock, it is allocated to the full open position.
(2) Before starting the drilling rig, check whether the charging pressure of the accumulator is normal; Check whether the scouring water pressure and the lubricating air pressure can be; Check whether there is sufficient lubricating oil in the lubricator, and whether the oil supply is appropriate; Check the reverse tendency of the oil pump motor. (3) If the drilling rig cannot open the hole smoothly, it should first assign the rock drill to retreat, and then let the rock drill move forward to open the hole from the beginning.
(4) When replacing the drill bit, the drill bit should be gently pressed against the rock, so that the motor of the drill can be reversed to complete the sensitive unloading head.
(5) The inspection of hydraulic components can only be prevented under the condition of pole cleaning, and after the connecting tissue is removed, it must be quickly plugged with the cleaning tightly matched plug. Before the repaired rock drill is used from scratch, it is necessary to circulate the hydraulic oil into the oil circuit to wash the components of the hydraulic system.
(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