Creating the Next Generation of Superheater Boiler Tubes
Boiler tube maintenance is expensive.
Steamside oxidation and oxide exfoliation can plug traditional austenitic stainless steel boiler tubes in tight-bend areas and potentially cause accelerated wear in steam turbines downstream. Exfoliation-related damage results in expensive maintenance and cleaning as well as a major disruption to productivity through plant down time. Shotpeening is a proven surface treatment to minimize exfoliation of the inside diameter, ID, of stainless steel Super 304H and 347H boiler tubes.
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Global Leader
MetFin has developed, customized and installed multiple boiler tube peening systems. Our customers have reported that these systems are critical to their operations and have proven to be robust and dependable. A MetFin peening system will process tubes that are resistant to the forces that cause scale exfoliation and offer extended boiler up time.
Installing tubes that have been peened through cold working the ID in a MetFin peening system will increase the fatigue life expectancy of the tubes and drastically lower the incidence of failures associated with interior tube scale exfoliation. Downtime from pipe failure will be minimized and maintenance time will be reduced through this low cost, safe and reliable means of preventing exfoliation of oxide scales in boiler tubes. By taking corrective and preventive action by utilizing peened stainless steel tubes in boiler manufacture and repair, utilities can expect to save millions of dollars and thousands of hours of downtime over the life of a typical boiler.
Superior Design
MetFin’s interior tube peening system for superheater boilers
The utility industry has recently recognized the importance of shot peening stainless steel boiler tubes as the best method of preventing exfoliation of oxide scales on the ID of boiler tubes. Peening the internal surfaces of austenitic stainless steel Super 304H and 347H tubes controls the occurrence of scale exfoliation.
MetFin peening systems effectively deter this process by imparting residual compressive stress to the material resulting in the interior surfaces of tubes to be work hardened. This process changes the durability and microstructure of the surface of the tube interior effectively making the tubes able to maintain their integrity when used under the extreme pressure and high heat now present in ultra-high efficiency superheater boiler systems.
MetFin Boiler Tube Peening Systems offer:
A MetFin system will provide years of productivity and positive results. The MetFin team will set standards for the maintenance of the system to assure continued and confident up time and reliable results.