The drill string, or the steel drill rod, is considered the most important tool in a drilling operation, and therefore, it should be able to withstand the strain of drilling in difficult places. The drill line must be able to withstand the force of drilling for long periods of time without breaking. The quality of the drill string depends on the material used in making it; however, the most common drill string is made from a mixture of steel and cobalt-coated iron.
Hard bands are used as an insulator between the drilling machine and the drill rod for preventing corrosion. These hard bands are generally plated with zinc, which provides good conductivity and mechanical strength while protecting against corrosion. Machine oil is used to lubricate the armbands after they are drilled into the surface of the material to prevent wear and tear. The drill strings are then bent into a U-shape, which makes it easier for the drill to penetrate the surface with increased penetration.
When choosing a drill string with hardbanding and machine coating, you should take note of the material you’re drilling holes into. For example, diamond drill bits have a diamond core that is solid and hard, allowing it to drill into many surfaces with less friction and with more precision. Other drill bits are made from either cobalt or stainless steel, which are also durable and give the same results as the diamond drill bits. Before buying a drill string, make sure it’s the right one for what you’re drilling.