A Review of Corrosion Resistance Alloy Weld Overlay Cladding Material for Geothermal Applications

2021 ◽  
Vol 1047 ◽  
pp. 120-127
Author(s):  
Reylina Garcia Tayactac ◽  
Edward B.O. Ang

Geothermal is known as renewable energy and a clean energy source but inherent properties make this energy clean. Minerals and deposits in geothermal reservoirs create a scale that is persistent in its corrosive nature. In addition, heat extremes and pressure variations present challenges to the integrity of the wellhead components and the downhole casing. Such challenges need to be mitigated to achieve maximum output from these aging or even newly commissioned wells. The geothermal power industry has reported a wide range of corrosion problems. Given the highly corrosive conditions to be treated in the geothermal sector and the benefits of reduced unplanned downtime, operating cost savings would be expected if more CRAs clad products were used. In many cases, only the material's surface requires corrosion resistance and carbon or alloy steel can be clad with a more corrosion-resistant alloy. Up to 80% of the cost of using solid alloy can be saved by cladding. Carbon or low-alloy steel cladding can be carried out by overlay welding. This paper reviews available literature on corrosion in the geothermal environment and presents the successful use of clad products in other industries to support the rising demand for Philippine geothermal applications.

Alloy Digest ◽  
1987 ◽  
Vol 36 (5) ◽  

Abstract SAE 1345 is a through-hardening, manganese alloy steel with intermediate hardenability. It is most commonly used where good strength is needed but low-to-medium toughness is sufficient. Its wide range of uses in tools and machinery includes hand tools, gears, shafts, bolts and housings. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-425. Producer or source: Alloy steel mills and foundries.


Alloy Digest ◽  
1981 ◽  
Vol 30 (7) ◽  

Abstract SAE 8642 is a triple-alloy steel that can be hardened by austenitizing and quenching in oil. This steel has moderate hardenability with relative high strength and toughness, especially in the quenched-and-tempered condition. It is used in a wide range of components, parts and tools; examples are bolts, shafts, gears, wrenches, axles and housings. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-382. Producer or source: Alloy steel mills and foundries.


Alloy Digest ◽  
1985 ◽  
Vol 34 (3) ◽  

Abstract UNS NO. G50461 is a low-chromium alloy steel with boron added to increase its hardenability. This steel has medium hardenability and strength with good ductility. It is used in a wide range of machinery and tool applications where its properties meet the requirements. Another grade (UNS No. H50461) has similar properties but slightly wider ranges in percentages of carbon, manganese and chromium; this is known as the H-grade (Hardenability grade). This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-408. Producer or source: Alloy steel mills and foundries.


2017 ◽  
Vol 24 (2) ◽  
pp. 203-212 ◽  
Author(s):  
Monika Janas ◽  
Alicja Zawadzka

Abstract Energy willow as a species with broad adaptation possibilities, large production capacity and a wide range of applications, takes a special place among the plants grown for energy production. In this work an analysis was conducted in respect of the usefulness of this type of wood from experimental plantations as a clean source of energy generated in the combustion process. The heat of combustion and net calorific value of dry matter of energy willow wood, including selected sorts and classes of thickness were determined. Energy willow has a natural ability to accumulate heavy metals which are oxidized during the combustion process or remain in the ash, and consequently repollute the environment. In order to determine the environmental impact the content of heavy metals was examined in energy willow wood and in the soil of the experimental plantation. Metal concentrations were determined by the Atomic Absorption Spectrometry method (AAS). Results of the tests confirmed a close relationship between the heat of combustion, calorific value and wood thickness as well as its location in the tree structure. Furthermore, very large differences were found in the content of heavy metals in the samples of both willow wood and soil. The levels of heavy metal content in the wood of energy willow determine the agricultural use of ashes produced during combustion.


Alloy Digest ◽  
1977 ◽  
Vol 26 (6) ◽  

Abstract AISI 5147 is a low-chromium (nominally 1% chromium), intermediate-hardenability alloy steel for medium-duty applications. It is normally hardened by quenching in oil. It has a wide range of applications for transportation equipment, farm implements, tools and industrial machinery. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SA-334. Producer or source: Alloy steel mills and foundries.


Alloy Digest ◽  
1982 ◽  
Vol 31 (10) ◽  

Abstract SAE 50B50 is a low-chromium alloy steel with boron added to provide a substantial increase in its hardenability. Its higher hardenability is reflected in higher hardness, especially in the liquid quenched-and-tempered condition. It is used a wide range of machinery and tool applications where its medium hardenability and strength meet the requirements. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-386. Producer or source: Alloy steel mills and foundries.


2021 ◽  
Author(s):  
Dr. Ramakrishna G. Bhat ◽  
Pankaj D. Dharpure ◽  
Mousumi Behera ◽  
Archana S. Thube

Base dependent oxidative rearrangement of dithiolanes and dithianes to access disulfide-linked-dithioesters under visible-light photoredox catalytic conditions has been disclosed. The protocol demonstrated the ability to synthesize either rearranged product or sulfoxide by simply switching the base with inherent ability to make hydrogen bonding with sulfur atom. Unlike, the usual deprotection of thioacetals to corresponding aldehydes under the oxidative conditions, we observed the unique regioselective oxidative reactivity of thioacetals to form disulfide-linked-dithioester or sulfoxides. The generality of the protocol has been demonstrated by exploring a wide range of substrates. As an application the in-situ generated thyil radical has been trapped with disulfides to prepare hetro-disulfides of potential utility. The protocol proved to be practical on gram scale quantity and relied on clean energy source for the transformation. Based on the series of control experiments, cyclic volametry and Stern-Volmer studies the plausible mechanism has been proposed.


2018 ◽  
Vol 32 (3) ◽  
pp. 20
Author(s):  
Manas Kumar Saha ◽  
Ritesh Hazra ◽  
Ajit Mondal ◽  
Santanu Das

Alloy Digest ◽  
1982 ◽  
Vol 31 (8) ◽  

Abstract ANACONDA Alloy 268 is a copper-zinc alloy with excellent cold-working properties; it can be cold worked by all the conventional fabrication processes. Its corrosion resistance is excellent-to-good in most environments. This alloy has a wide range of applications including items such as springs, bathroom fixtures, automotive radiators, lamp sockets and sanitary traps. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-442. Producer or source: Anaconda American Brass Company.


Alloy Digest ◽  
1987 ◽  
Vol 36 (2) ◽  

Abstract SAE 1020 is a low-carbon steel combining good machinability, workability and weldability. It is carburized for use in case-hardened components and it is used for a wide range of applications in the hot-worked, cold-worked, normalized or quenched-and-tempered conditions. Its many uses include bolts, rods, plate applications, machinery components, case-hardened parts, spinning tools and trimming dies. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on low temperature performance and corrosion resistance as well as heat treating, machining, joining, and surface treatment. Filing Code: CS-113. Producer or source: Carbon steel mills.


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