Riser tensioners are used on floating deepwater drilling platforms to maintain constant tension on the drill string, independently of platform motion resulting from currents, waves, and wind. The hydraulics of the system, constantly exposed to corrosive seawater, must always actuate smoothly and efficiently.

Ball valves are extensively used in the oil and gas industry for flow diversion and safety applications. Their rugged design allows them to be used in high pressures applications. The precision-fit balls and seats are subject to galling, abrasion, and erosion in service that can result in unintentional backflow or leakage.

The drill collar is located at the lowest part of the drill string and is the main component of the lower drilling tool assembly. Its main function is to make the drill bit work smoothly. As an essential component of oil rig drilling, the drill collar adds weight to the bit so as to effectively break rock. Usually comprised of steel or carbon steel, drill collars are subject to abrasion and slurry erosion that limits their downhole life and increase project maintenance costs.

Drilling tool stabilizer is an important tool for preventing well deviation changes in oil, natural gas and geological exploration drilling engineering. Drill stabilizers prevent unintentional sidetracking and vibration of the bottomhole assembly. While drilling, the stabilizer blades are subject to extreme slurry abrasion. Sand or gravel exposure results in additional impact and slurry erosion wear. Damage to the blades can result in an undesired drillstring trip for change out.

Remanufacturing and repairing damaged parts is an important way to recover huge economic and time losses, improve resource utilization, and realize the sustainable development of the national economy. Select alloy powders with excellent performance for laser cladding repair, analyze the macro/microstructure characteristics, hardness and wear resistance of the laser cladding layer, and then grind the cladding layer to realize the remanufacturing of the lathe spindle