Воздушная жесткая буровая штанга

At its core, submarine hammer drilling employs a powerful hammer mechanism to drive a drill bit into the seabed. The system utilizes both air and water pressure to deliver repeated impacts on the drill bit, which enables it to break through hard rock formations or sediments that might hinder installation efforts for marine infrastructure. The design of the hammer ensures that the energy is efficiently transmitted to the drill bit, allowing it to operate at significant depths.


...

Post-processing of large castings, large foundry processing manufacturers can use liquid sandblasting to clean the oxide scale and residue on the surface of the casting, which can not only remove impurities, but also play a role in polishing and improving the surface finish of the casting; Use grinding wheels, abrasive cloths, sandpaper and other abrasives to remove impurities such as burrs, protrusions and oxide scales on the surface of steel castings, so that the surface is smooth. In addition, methods such as mechanical, electrochemical and chemical polishing can further improve the gloss and corrosion resistance of castings.

...

Ecologically, spiral foraging promotes responsible harvesting practices. Foragers are encouraged to take only what they need, leaving enough resources for wildlife and for the plants’ own regeneration. The spiral pattern naturally leads foragers away from heavily trafficked areas, allowing plants to flourish undisturbed. By leaving some areas untouched, foragers contribute to the preservation of biodiversity, ensuring that ecosystems remain healthy and resilient.


...