scholarly journals The possibility of extending work time of tribocouple welding improved stainless steel with improved carbon steel

2018 ◽  
Vol 184 ◽  
pp. 01014 ◽  
Author(s):  
Vlatko Marušić ◽  
Predrag Dašić ◽  
Ivan Opačak
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Tensile Load ◽  
High Hardness ◽  
Life Time ◽  
High Yield ◽  
Welding Parameters ◽  
Additional Material ◽  
Tensile Tester ◽  
Bucket Elevator

In the conditions of tribo-corrosion wear, extending of life time of parts can be achieved by using stainless steel, which is hardened to sufficiently high hardness. In the tribopair bolt/shell/slice of the bucket elevator transporter conveyor machine, the previously improved martensitic stainless steel for bolts is hardened at ≈ 45 HRC and welded with the improved high yield carbon steel for bolts. As the additional material, an electrode based on Cr-Ni-Mo (18/8/6) is used. The structure and hardness of welded samples are tested. On the tensile tester, resistance of the welded joint is tested with a simulated experiment. Dimensional control of wear of elements of tribopair was performed after six months in service. The analysis of test results showed that with regulated additional material and by applying the recommended welding parameters, the properties of the weld, which provide the necessary reliability of the joint in the conditions of tensile load, can be achieved, with a significant increase in the wear resistance of bolt.

Failure Analysis of Duplex Stainless Steel in an Atmospheric Tower

2018 ◽  
Author(s):  
Chengsi Zheng ◽  
Gang Wang ◽  
Xiang Wu ◽  
Zhibin Ai
Keyword(s):  
Stainless Steel ◽  
Chemical Composition ◽  
Carbon Steel ◽  
Weld Metal ◽  
Duplex Stainless Steel ◽  
Statistical Data ◽  
Welding Parameters ◽  
Physical Metallurgy ◽  
Σ Phase ◽  
Formation Of Cracks

An atmospheric tower head, manufactured using a clad plate of carbon steel + 2205 duplex stainless steel (DSS), was reported to show clear cracks in the DSS layer after serving for four years at an atmospheric distillation unit of a refinery. The cracks propagated in a dendritic manner within the heat-affected zone (HAZ) and the weld metal, accompanying locations with a higher hardness than that of locations without cracks. Some nondestructive methods were used to analyze the chemical composition, microstructure, hardness of the base metal, HAZ and weld metal. An analysis based on these results and the statistical data of an HCl-H2S-H2O corrosion environment was proposed to explain the formation of cracks from the viewpoint of physical metallurgy. The analysis showed that there were conditions favorable for the precipitation of the sigma (σ) phase in the DSS layer during the manufacturing process of the head, resulting in the occurrence of stress corrosion cracking (SCC) in the DSS layer under the harsh HCl-H2S-H2O environment. Moreover, some solutions, i.e., the enhancement of anticorrosion measures, the optimized microstructure of the DSS, and modified welding parameters were recommended to avoid a similar failure.

scholarly journals Static Structural Analysis of Different Materials for Connecting Rod

2021 ◽  
Vol 9 (12) ◽  
pp. 1083-1089
Author(s):  
Sumeet Sivadas
Keyword(s):  
Stainless Steel ◽  
Titanium Alloy ◽  
Cast Iron ◽  
Structural Analysis ◽  
Carbon Steel ◽  
Compressive Load ◽  
Tensile Load ◽  
Grey Cast Iron ◽  
Connecting Rod ◽  
Grey Cast

Abstract: Connecting Rods are an important and irreplaceable part of IC Engines. It is responsible for converting the reciprocating motion of the piston into the rotary motion of the crankshaft. During this process, the connecting rod is subjected to various loads. Therefore, the materials used for connecting rod are also very important. In this paper, a static structural analysis of a connecting rod made of 5 different materials: Forged Steel, Carbon Steel, Stainless Steel, Grey Cast Iron and Titanium Alloy are compared. The connecting rod is analyzed only for the axial compressive load and not the axial tensile load because the tensile load is very much lesser than the compressive load. The connecting rod’s model is developed in FUSION 360 software and then imported to and analyzed using Finite Element Method in the ANSYS 2021 WORKBENCH software. The equivalent stress, total deformation along with the factor of safety for all the materials is found and compared in the analysis and all the results are shown with the help of images and graphs. Keywords: Connecting Rod, FEA, ANSYS WORKBENCH, Structural Analysis, Forged Steel, Carbon Steel, Stainless Steel, Grey Cast Iron, Titanium Alloy.

Effect of welding parameters on residual stresses in dissimilar joint of stainless steel to carbon steel

2010 ◽  
Vol 46 (9) ◽  
pp. 3225-3232 ◽  
Author(s):  
E. Ranjbarnodeh ◽  
S. Serajzadeh ◽  
A. H. Kokabi ◽  
A. Fischer
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Residual Stresses ◽  
Dissimilar Joint ◽  
Welding Parameters

scholarly journals CMT Welding of Titanium and Stainless Steel Using CuSi3 Electrode

2019 ◽  
Vol 67 (1) ◽  
pp. 147-153
Author(s):  
Nela Poláková ◽  
Petr Dostál
Keyword(s):  
Stainless Steel ◽  
Fusion Welding ◽  
Gas Absorption ◽  
Protective Atmosphere ◽  
Metallographic Analysis ◽  
Welding Parameters ◽  
Additional Material ◽  
Measurement Results ◽  
Cmt Welding

The article deals with the possibility of a tight permanent joint of X5CrNi 18–10 austenitic steel and UNS N50400 titanium. The nuclear and chemical industries are in particular interested in solving this problem. The joining by means of fusion welding has come up against unreliability due to the formation of brittle intermetallic compounds between titanium and iron. The article deals with joining of these two heterogeneous materials by an innovative CMT welding method. CuSi3 soldering electrode was chosen as the additional material. Protective atmosphere consisting of clean argon has been chosen due to the undesirable gas absorption by titanium at temperatures over 600 °C. The results will compare different welding parameters and their impact on the quality of the weld joint. The quality of the created welds will be verified on the basis of the tensile test and the results will be graphically visualized. The microhardness in the weld and its surroundings will be measured. The microhardness measurement results will be graphically displayed. The experimental results will be supplemented by macrostructure snapshots and metallographic analysis snapshots.

Pyrolytic carbon filaments and associated catalytic particles formed in steel tubes

1984 ◽  
Vol 42 ◽  
pp. 662-663
Author(s):  
Y. L. Chen ◽  
J. R. Bradley
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Catalyst Particle ◽  
Pyrolytic Carbon ◽  
Plain Carbon Steel ◽  
304 Stainless Steel ◽  
Hydrocarbon Gases ◽  
Steel Tubes ◽  
Filamentous Carbon ◽  
Carbon Filaments

Considerable effort has been directed toward an improved understanding of the production of the strong and stiff ∼ 1-20 μm diameter pyrolytic carbon fibers of the type reported by Koyama and, more recently, by Tibbetts. These macroscopic fibers are produced when pyrolytic carbon filaments (∼ 0.1 μm or less in diameter) are thickened by deposition of carbon during thermal decomposition of hydrocarbon gases. Each such precursor filament normally lengthens in association with an attached catalyst particle. The subject of filamentous carbon formation and much of the work on characterization of the catalyst particles have been reviewed thoroughly by Baker and Harris. However, identification of the catalyst particles remains a problem of continuing interest. The purpose of this work was to characterize the microstructure of the pyrolytic carbon filaments and the catalyst particles formed inside stainless steel and plain carbon steel tubes. For the present study, natural gas (∼; 97 % methane) was passed through type 304 stainless steel and SAE 1020 plain carbon steel tubes at 1240°K.

Estimation of Some Mechanical Properties for Similar & Dissimilar Welded Joints

2014 ◽  
Vol 2 (1) ◽  
pp. 59-76
Author(s):  
Abdullah Daie'e Assi
Keyword(s):  
Stainless Steel ◽  
Carbon Steel ◽  
Austenitic Stainless Steel ◽  
Base Metal ◽  
Welded Joints ◽  
Plate Thickness ◽  
Low Carbon Steel ◽  
Dissimilar Metals ◽  
Low Carbon ◽  
Steel Type

This research deals with the choice of the suitable filler metal to weld the similar and dissimilar metals (Low carbon steel type A516 & Austenitic stainless steel type 316L) under constant conditions such as, plate thickness (6 mm), voltage (78 v), current (120 A), straight polarity. This research deals with three major parts. The first parts Four types of electrodes were used for welding of dissimilar metals (C.St A516 And St.St 316L) two from mild steel (E7018, E6013) and other two from austenitic stainless steel (E309L, E308L) various inspection were carried out include (Visual T., X-ray T., δ- Ferrite phase T., and Microstructures T.) and mechanical testing include (tensile T., bending T. and micro hardness T.) The second parts done by used the same parameters to welding similar metals from (C.St A516) Or (St.St 316L). The third parts deals with welding of dissimilar weldments (C.St And St.St) by two processes, gas tungsten are welding (GTAW) and shielded metal are welding (SMAW).        The results indicated that the spread of carbon from low carbon steel to the welding zone in the case of welding stainless steel elect pole (E309L) led to Configuration Carbides and then high hardness the link to high values ​​compared with the base metal. In most similar weldments showed hardness of the welding area is  higher than the hardness of the base metal. The electrode (E309L) is the most suitable to welding dissimilar metals from (C.St A516 With St.St 316L). The results also showed that the method of welding (GTAW) were better than the method of welding (SMAW) in dissimilar welded joints (St.St 316L with C.St A516) in terms of irregular shape and integrity of the welding defects, as well as characterized this weldments the high-lift and resistance ductility good when using the welding conditions are similar.

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