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 main components of submarine hammer drilling equipment include the drill rig, hammer, drill pipes, and the drill bit. The drill rig is often mounted on a surface vessel or a floating platform and is designed to support the excessive weight and dynamic forces encountered during drilling operations.

The DTH hammer operates through compressed air, which is pumped through a series of valves and chambers within the hammer. When the air pressure builds up, it drives a piston that strikes the drill bit, creating a powerful force that breaks the material. This process continues in rapid succession, allowing the drill bit to penetrate the ground efficiently. The design of the DTH hammer allows for a larger drop height of the piston than traditional rotary drills, resulting in higher impact energy and better drilling performance.

Submarine hammer drilling sees extensive applications in several sectors

The reason:The suction pipe is not filled with water
Blocked suction line or inadequate valve opening
The inlet pipe of the pump, the meter or the stuffing box are serious

- Geothermal Energy The ability to create deep, straight boreholes makes DTH drilling an excellent choice for geothermal energy projects, allowing reliable access to thermal resources.

4. Reliability Built with robust components, portable rotary air compressors are designed to withstand tough working conditions. They require less maintenance and have longer service lives, resulting in cost savings over time for users.

Additionally, submarine hammer drilling is a versatile technique, suitable for various applications, including the installation of underwater pipelines, foundations for offshore structures, and the recovery of geological samples for research and analysis. This adaptability makes it an essential tool in the fields of marine engineering, environmental research, and resource extraction.

Conclusion