"The shortage of available energy resources, increased activity in deep waters, high pressures, low temperatures, extreme conditions and the need for high productivity and stringent reliability make the oil and gas market a difficult sector," said a company spokesperson. "DANOBATGROUP has a business area specializing in turn-key solutions for the oil and gas industry and has worked with manufacturers such as Aker Solutions, Cameron, Metso, Mogas, NOV, Tenaris, Tpco and Vallourec to provide high value-added solutions for the manufacture of parts such as pipes, couplings, high pressure valves, ball valve seats, balls for ball valves and more."
DANOBATGROUP has developed the BGM, a solution for the machining of balls for ball valves. It is able to machine diameters up to 2,100 mm and materials with a complex machinability such as stainless steel, duplex and super duplex HVOF. Machining is performed with a segmented grinding wheel, and the power of the anti-backlash spindle ranges from 22 to 92 kW. "The machines govern the force exerted on the ball during the machining process, thus guaranteeing the surface finish requirements set by the client," said the spokesperson. Centering of the workpiece is performed by controlling the two axes to adjust the height of the wheel spindle to the horizontal work spindle axis.
"During the machining process, measuring can be done before, during and after grinding in order to obtain a more controlled result," said the spokesperson. "The operator can monitor and make adjustments to the entire process through the graphic 12-inch NC panel with CNC or PLC technology and specific software for grinding balls of ball valves. The bed is also designed and optimized to achieve the best results, facilitating the removal of residues produced during the grinding process so as not to damage the workpiece or the machine components.
"Even so, both the linear axis and the spindles are protected against residues with pressurized metal bellows to ensure the durability of the BGM. Several possibilities for customization are available to suit the needs of each customer and each process."
Optional equipment includes turning capability, diamond dressing with a diamond wheel and automatic tool changes. "These configuration modules facilitate several automation processes and, as a result, enhance the productivity of the machine," said the spokesperson.
The company also offers a comprehensive solution for machining the ring of the valve seat of between 100 to 1,700 mm. The DANOBAT-OVERBECK plant in Germany makes machines such as the IRD, which has been conceived to grind smaller valve balls.
For more information contact:
Danobat-Marathon, LLC
5515B FM 1960 East
Humble, TX 77346
281-812-2324
www.danobat-marathon.com