Customer Requirements: An oil exploration and production company required a series of heavy-duty and corrosion-resistant steel parts for their newly designed offshore drilling equipment. These parts included large-diameter shafts for the drilling rig's transmission system, which needed to withstand extremely high torsional and axial loads. The shafts had to have a hardness of HRC 45 - 50 and a surface roughness not exceeding Ra 1.6 μm. Additionally, various valve bodies and fittings were needed, which had to have precise internal bores and threaded connections to ensure leak-free operation in the harsh marine environment.
Solutions and Machining Processes:
CNC Lathe and Heat Treatment for Shafts: The enterprise utilized a powerful CNC lathe with a heavy-duty chuck and rigid bed structure to machine the large-diameter shafts. The lathe was programmed to cut the shafts to the required dimensions with strict control over the diameter and length tolerances. After the rough machining, the shafts were heat-treated using a combination of quenching and tempering processes to achieve the desired hardness. Then, a precision grinding operation was carried out to ensure the surface roughness met the specifications.
CNC Milling and Threading for Valves and Fittings: For the valve bodies and fittings, a CNC milling machine was used to create the complex external shapes and precisely mill the internal bores. Special attention was given to the threading operations, where high-precision taps and dies were employed to ensure the threaded connections were accurate and leak-proof. The parts were then coated with a corrosion-resistant layer using a specialized spraying process to protect them from the corrosive effects of seawater and petroleum fluids.
Results and Customer Feedback: The machined parts were installed in the offshore drilling equipment, and they performed flawlessly during the initial testing and subsequent field operations. The equipment's reliability and durability were enhanced, leading to increased productivity and reduced downtime. The oil exploration and production company was highly impressed with the quality and performance of the components. They recognized the enterprise's expertise in machining for the petroleum industry and initiated additional orders for spare parts and upgrades to their existing equipment.
Customer Requirements: An oil exploration and production company required a series of heavy-duty and corrosion-resistant steel parts for their newly designed offshore drilling equipment. These parts included large-diameter shafts for the drilling rig's transmission system, which needed to withstand extremely high torsional and axial loads. The shafts had to have a hardness of HRC 45 - 50 and a surface roughness not exceeding Ra 1.6 μm. Additionally, various valve bodies and fittings were needed, which had to have precise internal bores and threaded connections to ensure leak-free operation in the harsh marine environment.
Solutions and Machining Processes:
CNC Lathe and Heat Treatment for Shafts: The enterprise utilized a powerful CNC lathe with a heavy-duty chuck and rigid bed structure to machine the large-diameter shafts. The lathe was programmed to cut the shafts to the required dimensions with strict control over the diameter and length tolerances. After the rough machining, the shafts were heat-treated using a combination of quenching and tempering processes to achieve the desired hardness. Then, a precision grinding operation was carried out to ensure the surface roughness met the specifications.
CNC Milling and Threading for Valves and Fittings: For the valve bodies and fittings, a CNC milling machine was used to create the complex external shapes and precisely mill the internal bores. Special attention was given to the threading operations, where high-precision taps and dies were employed to ensure the threaded connections were accurate and leak-proof. The parts were then coated with a corrosion-resistant layer using a specialized spraying process to protect them from the corrosive effects of seawater and petroleum fluids.
Results and Customer Feedback: The machined parts were installed in the offshore drilling equipment, and they performed flawlessly during the initial testing and subsequent field operations. The equipment's reliability and durability were enhanced, leading to increased productivity and reduced downtime. The oil exploration and production company was highly impressed with the quality and performance of the components. They recognized the enterprise's expertise in machining for the petroleum industry and initiated additional orders for spare parts and upgrades to their existing equipment.
