... ABSTRACT Sand production is a common challenge in oil and gas industry and will lead to loss of wall thickness due to erosion mechanisms. One way of reducing the impact of erosion due to sand is to select weld overlay cladding on the interior of the pipe. Weld overlay cladding is a welding...

... composition (iron dilution) and other defects. These issues are widely noticed in the industry particularly in CRA weld overlay. Many of these cases have been detected during final inspection before commissioning and any repairs or rework at that stage incurs heavy economic costs and also delayed projects...

... Abstract Weld overlay of the UNS K1157 (ASME SA213-T11) boiler tubes is required in coal fired boilers operating in a low-NO? combustion mode to prevent excessive corrosion of the pressure tubes. When retrofitting boilers to a low-NO? combustion mode (to reduce emissions), it was found...

... Abstract Corrosion tests were carried out to determine the effect of iron content on localised corrosion and stress corrosion cracking (SCC) resistance of Ni-Cr-Mo alloy weld overlays (i.e. Alloy 625) in H2S environments. In addition, the influence of iron content on the fatigue crack growth...

... Abstract Corrosion tests were carried out to determine the effect of iron content on localised corrosion resistance of Ni-Cr-Mo alloy weld overlays (e.g. Alloy 625) in chloride ion-containing environments. A range of iron contents (i.e. 5 – 50%) were examined using coupons extracted from weld...

... Abstract The corrosion resistance of Ni-base weld overlays including Ni-Cr-Fe, Ni-Cr-Mo and Ni-Mo alloys was evaluated in immersion tests in the 80 wt.% H 2 SO 4 at 150 0 C (302 0 F) for 48 hours. Test results in terms of corrosion rates based on the mass loss data are presented. Internal...

... steel UNS K02599, low-alloyed steel UNS K11562, carbon steel with UNS N06022 weld overlay, and carbon steel with 50Cr-50Ni thermal spray coating for waterwall tubing; and on austenitic stainless steels UNS S34709, UNS S30432, UNS S31042, Ni-based alloys UNS N06617, Alloy 740, Ni-Cr-Fe alloys UNS S35045...

... ABSTRACT Sulfidation has been a frequently encountered high-temperature corrosion issue in petroleum refinery processing. Corrosion-resistant claddings and weld overlays have been widely used to provide protection of refinery equipments against sulfidation attack. Current study examines...

... ABSTRACT The ASTM G48-A test (ferric chloride test) is widely used for pre-qualification of corrosion resistant alloys, welds and weld overlays for oil and gas industry. The test methods and their acceptance criteria vary between the different oil companies, and all the described methods...

... low NO x combustion conditions. The early trials and adoption of weld overlays of chromia-forming alloys by the industry in mid-and late-1990s showed surprising successes in eliminating the tube wastage issue for the water walls. However, with longer services under the low NO x combustion conditions...

... well integrity Pipeline Corrosion Subsurface Corrosion resistance Corrosion Management texas 77084 application stainless steel corrosion resistant alloy H2S management Publication Division alloy metals & mining Production Chemistry Upstream Oil & Gas weld overlay permission...

... these carbon or Cr-Mo steel waterwall tubes is the application of sulfidation-resistant weld overlay claddings. For some supercritical units, corrosion attack can take the form of preferential sulfidation penetration which could lead to circumferential cracking in waterwall tubes. Superheaters and reheaters...

... ABSTRACT: UNS R20033 is produced as a welding consumable and is covered under AWS A.9 under the designation of ER33-31. This material is now being widely used as weld overlay material in the fossil boiler industry. The high chromium content of ER33-31 has been shown to provide excellent...

.... However, equipment flanges may be of low alloy steel base metal with weld overlay (WO) of type 347SS. RTJ grooves of these solid stainless steel or overlaid flanges may develop cracks in operation and if not detected and repaired in time may eventually leak. Cracking usually takes place due to various...

... ABSTRACT Alloy 625 (UNS N06625) has successfully been used as a weld overlay for many years in waste-toenergy systems to combat corrosion. UNS N06625 will likely remain the preferred alloy for the most aggressive regions of the boiler; however there are other regions in the system where leaner...

... samples taken from actual production hydraulic cylinders. In this paper, the CPT and CCT measurements that were successfully employed for evaluating UNS N06625 weld overlay materials compared with two potential HCRAs coated steels (UNS R31233 and UNS W73021). The main objective was to develop a rapid...

... ABSTRACT The use of corrosion resistant weld overlay materials has proven to be a very effective method to extend the life of boiler tubes in coal fired boilers. In order to properly select the best material to use for a weld overlay, the corrosive conditions need to be understood...

...) located 61 km (38 miles) south of LaBarge. Corrosion Inhibition oilfield chemistry well integrity corrosion inhibitor weld overlay well site flowline corrosion Production Chemistry Upstream Oil & Gas inspection injection facility operation materials and corrosion riser corrosion...

... corrosion US government Pipeline Corrosion riser corrosion materials and corrosion weld metals & mining Subsurface Corrosion co-extruded alloy 625 weld overlay composite tube inspection carbon steel alloy 625 recovery boiler butt weld black liquor recovery boiler examination interface...

... incinerator composition metals & mining riser corrosion incineration weld overlay alloy alloy 50 Case History exposure Houston application vci localized corrosion resistance Chromium corrosion resistance CONTRIBUTIONS OF NICKEL ALLOYS IN SOLVING AQUEOUS AND HIGH TEMPERATURE CORROSION...