Effect of Welding Consumables on Dissimilar AISI304/AISI1015 Steels Butt Joint Properties

2018 ◽  
Vol 777 ◽  
pp. 344-349
Author(s):  
Surat Triwanapong ◽  
Kittipong Kimapong
Keyword(s):  
Impact Strength ◽  
Weld Metal ◽  
Welding Current ◽  
Interface Structure ◽  
Butt Joint ◽  
Shielded Metal Arc Welding ◽  
Metal Arc Welding ◽  
Joint Properties ◽  
Covered Electrodes ◽  
The Impact

The butt joint of dissimilar AISI304/AISI1015 steels was produced by a Shielded Metal Arc Welding (SMAW) with 3 types of the covered electrodes and the welding current of 80-120 A. The investigation of joint properties for the impact strength, the hardness, and the microstructure, was performed. The SMAW butt joint that was welded by the E312 covered electrode and 100A welding current showed the highest impact strength of 112 J. The chromium was the important reinforced element affected to increase in the hardness and the impact strength of the joint by forming and dispersing the chromium carbide in the weld metals. Interface structure of the carbon steel/the weld metal clearly showed a small combined area of the metals in opposition to the interface structure of the stainless steel/ the weld metal which had a large combined area of the metals.

SMAW Electrodes Selection for Producing Hard-Faced Layer on FC25 Cast Iron Surface

2018 ◽  
Vol 777 ◽  
pp. 339-343
Author(s):  
Pramote Poonayom ◽  
Kittipong Kimapong
Keyword(s):  
Cast Iron ◽  
Impact Strength ◽  
Weld Metal ◽  
Welding Current ◽  
Welding Parameters ◽  
Alloying Element ◽  
Shielded Metal Arc Welding ◽  
Metal Arc Welding ◽  
Covered Electrodes ◽  
Selection For

A shielded metal arc welding (SMAW) using various covered electrodes applied to produce a hard-faced weld metal on FC25 gray cast iron bare surface. It found that all welding parameters such as 3 electrode types and welding currents of 90-130 A were able to produce a sound weld metal without a defect that could deteriorate the joint strength. The white cast layer thickness that was formed at the interface between the weld metal and the base metal was increased when increasing in the welding current and the alloying element in the electrode. Impact strength tended to increase when the alloying element such as chromium (Cr), molybdenum (Mo), and manganese (Mn) was existed, and it showed the maximum impact strength when H600 electrode was applied. In a comparison of microstructure characteristics of the joints, the joint that showed the maximum impact strength had the formation of fine needle-like grain in the weld.

scholarly journals Variation of Microstructural and Mechanical Properties With Respect to Polarity in Shielded Metal Arc Welding of Mild Steel

2019 ◽  
Vol 4 (2) ◽  
pp. 521-530 ◽  
Author(s):  
Bijaya Kumar Khamari ◽  
Balamurali Gunji ◽  
Swapan Kumar Karak ◽  
Bibhuti Bhusan Biswal
Keyword(s):  
Impact Strength ◽  
Mild Steel ◽  
Arc Welding ◽  
Maximum Growth ◽  
Work Piece ◽  
Shielded Metal Arc Welding ◽  
Double Pass ◽  
Material Thickness ◽  
Metal Arc Welding ◽  
The Impact

Welding has been done by taking mild steel as work piece material in shielded metal arc welding (SMAW) process. Material thickness and current were considered as input parameters. Joining of metals has been completed in two ways. In first process double pass welding has been done in which 1st pass was in reverse polarity and the second pass was in straight polarity and in the 2nd process both the passes of welding were completed with straight polarity. The comparison of microstructure and impact toughness has been investigated. It was found that more amount of heat was generated in the 2nd process as compared to the 1st process. Therefore, growths of grains in heat affected zone occurred and maximum growth occurred in 2nd than 1st process. Impact strength increased with decrease in current value and increase in material thickness respectively. The impact strength values for 1st process welding were relatively less as compared to 2nd process.

Effect of Butt Joint on Mechanical Properties of Welded Low Carbon Steel

2013 ◽  
Vol 845 ◽  
pp. 775-778 ◽  
Author(s):  
Toto Triantoro Budi Wardoyo ◽  
S. Izman ◽  
Denni Kurniawan
Keyword(s):  
Carbon Steel ◽  
Weld Metal ◽  
Base Metal ◽  
Arc Welding ◽  
Low Carbon Steel ◽  
Hardness Test ◽  
Butt Joint ◽  
Low Carbon ◽  
Shielded Metal Arc Welding ◽  
Metal Arc Welding

Effect of variation of the connection (butt joint) in low carbon steel resistance welding (shielded metal arc welding, SMAW) performance is investigated in this paper. Three types of butt joint was varied: square, single V, and double V. The results from tensile test showed that welded specimens are of similar tensile properties with base metal and one another. When hardness test was performed on weld metal, HAZ, and base metal of each specimen,.it was found that weld metal and HAZ were of higher hardness than the base metal. Specimen with square joint exhibits the highest hardness while specimens with single V and double V joints show similar hardness. Microstructure analysis revealed that weld metal of specimen with square joint is of bainite-martensite phases while weld metal of specimens with single V and double V joints are of ferrite-pearlite phases. This difference in microstructure, and hence in hardness, is related to the corresponding heat input during welding.

Influence of Gas Metal Arc Welding Parameter on Lap Joint Properties of SS400 Carbon Steel and SUS304 Stainless Steel

2018 ◽  
Vol 789 ◽  
pp. 110-114 ◽  
Author(s):  
Kittipong Kimapong ◽  
Surat Triwanapong
Keyword(s):  
Carbon Steel ◽  
Weld Metal ◽  
Arc Welding ◽  
Gas Metal Arc Welding ◽  
Welding Current ◽  
Welding Parameter ◽  
Joint Interface ◽  
Lap Joint ◽  
Metal Arc Welding ◽  
Joint Properties

SS400/SUS304 steels lap joint was applied in various industries due to flexible andbeneficial properties of these dissimilar metals joint. Therefore, an investigation for optimization ofa gas metal arc welding (GMAW) for producing the dissimilar metal lap joint should be conductedfor advancing the manufacturing industries. This research applied GMAW with various currents andspeeds to weld SS400/SUS304 lap joint and studied the relationship between the parameters andresuted joint properties. The experiment showed that an increase in the wedling current and a decreasein the welding speed affected to increase the fracture strength, the displacement of the lap joint, andthe joint hardness due to high combination of the materials at the joint interface. The uncombinedmaterials at the carbon steel/weld metal interface had the different hardness and resulted to initiatethe crack that then was propergated until the joint was broken. The weld metal showed the formationof the finer and smaller dendrite structure with increasing the welding current and decreasing thewelding speed.

Microstructure and Bending Strength of Dissimilar SS400/SUS304 Steels T-Fillet Joint by Gas Metal Arc Welding

2018 ◽  
Vol 773 ◽  
pp. 189-195 ◽  
Author(s):  
Kittipong Kimapong ◽  
Surat Triwanapong
Keyword(s):  
Weld Metal ◽  
Base Metal ◽  
Arc Welding ◽  
Joint Strength ◽  
Gas Metal Arc Welding ◽  
Welding Current ◽  
High Chromium ◽  
Metal Arc Welding ◽  
Joint Properties ◽  
Fillet Joint

In this paper, experiments on welding a dissimilar SS400/SUS304 steel T-fillet joint using high chromium electrode, and an effect of welding current on joint properties were studied. T-joints wielded by the designed specific welding currents were mechanically prepared and systematically investigated for joint properties. The experimental results were summarized as follows. Dissimilar SS400/SUS304 steels T-fillet joint could be successfully welded using a gas metal arc welding process with no defect in a weld metal. The optimized welding current in this experiment was 160 A that showed the least crack length of 0.247 mm. from a bending test. A different chemical composition of low carbon steel and high chromium weld metal produced a small interface shown with a smaller mixed zone of reinforced elements and base metal. It was also affected to decrease in the joint strength. However, the increase in the welding current could increase a combination of reinforced elements and a base metal on the interface, and it showed an effect to increase in the joint strength.

scholarly journals Application of hard surfacing for repairing of agricultural parts

2013 ◽  
Vol 59 (No. 2) ◽  
pp. 61-67 ◽  
Author(s):  
J. Viňáš ◽  
J. Brezinová ◽  
A. Guzanová ◽  
M. Kotus
Keyword(s):  
Arc Welding ◽  
Base Material ◽  
Wear Test ◽  
Crushed Rock ◽  
Metallographic Analysis ◽  
Shielded Metal Arc Welding ◽  
Metal Arc Welding ◽  
Covered Electrodes ◽  
Material Wear

The contribution deals with the analysis of claddings quality realised by shielded metal arc welding with covered electrodes. For cladding, covered basic electrodes marked as E Z Fe 8 EN 14700 and E Z Fe 15 EN 14700 were used. The third type of electrode was experimentally made basic electrode with operating name EW11 (wolfram content 11%). New share made of C50R EN10083/1-98 was used as reference material. Quality of repairing deposits was evaluated by micro hardness measuring and by metallographic analysis of claddings and base material. Wear resistance of claddings was determined by weight loss during abrasive wear test by wading in following loose abrasive agents &ndash; Al<sub>2</sub>O<sub>3</sub> (corundum), crushed rock and arable soil. &nbsp;

Fracture Mechanics of Conventional and Narrow Groove Pulse Current Gas Metal Arc Welds of HSLA Steel

2012 ◽  
Vol 710 ◽  
pp. 451-456
Author(s):  
Ravi Ranjan Kumar ◽  
P. K. Ghosh
Keyword(s):  
Fracture Toughness ◽  
Weld Metal ◽  
Tensile Properties ◽  
Arc Welding ◽  
Hsla Steel ◽  
Gas Metal Arc Welding ◽  
High Strength ◽  
Compact Tension ◽  
Shielded Metal Arc Welding ◽  
Metal Arc Welding

Mechanical and fracture properties of 20MnMoNi55 grade high strength low alloy (HSLA) steel welds have been studied. The weld joints were made using Gas Tungsten Arc Welding (GTAW), Shielded Metal Arc Welding (SMAW) and Pulse Gas Metal Arc Welding (P-GMAW) methods on conventional V-groove (V-Groove) and Narrow groove (NG-13). The base metal and weld metal were characterised in terms of their metallurgical, mechanical and fracture toughness properties by following ASTM procedures. The J-Integral fracture test was carried out using compact tension C(T) specimen for base and weld metal. The fracture toughness and tensile properties of welds have been correlated with microstructure. In conventional V-groove welds prepared by P-GMAW shows the improvement in initiation fracture toughness (JIC) as compared to the weld prepared by SMAW. Similar improvements in tensile properties have also been observed. This is attributed to reduction in co-axial dendrite content due to lower heat input during P-GMAW process as compared to SMAW. In the narrow groove P-GMA weld prepared at f value of 0.15 has shown relative improvement of JIC as compared to that of the weld prepared by SMAW process.

Study of arc stability in underwater shielded metal arc welding at shallow depths

2008 ◽  
Vol 223 (3) ◽  
pp. 699-709 ◽  
Author(s):  
J A E Mazzaferro ◽  
I G Machado
Keyword(s):  
Weld Metal ◽  
Fourier Transforms ◽  
Short Circuit ◽  
Welding Current ◽  
Shielded Metal Arc Welding ◽  
Metal Quality ◽  
Electrode Coating ◽  
Welding Condition ◽  
Porosity Level ◽  
Arc Stability

The main objective of this work was to study the effects of changes in hydrostatic pressure and electrode coating composition on the shielding metal arc behaviour during underwater wet welding. Thus, wet welding operations were performed by an automatic device using a hyperbaric chamber to simulate depths of 5.0, 12.5, and 20.0 m. A covered electrode already developed in W & RTL was used as reference and compared with others with different amounts of CaCO3, TiO2, and aluminium added to their coatings. Hence, effects of welding condition and electrode coating on weld metal were evaluated through visual inspection of the weld beads, measurement of porosity level, and the results related to welding current and voltage signals. The welding arc signals were analysed through indexes calculated from instantaneous values of current and voltage, and fast Fourier transforms frequency spectrum. The mixtures containing CaCO3 additions exhibit fewer defects, while those containing aluminium additions have presented a great amount of pores and other discontinuities in the weld metal. As expected, all consumables showed a higher deposition rate, as welds were performed at greater depths (pressures), confirming the effect of arc constriction and the consequent increase in current density. Moreover, a region of transition in the metal transfer mode was identified around a depth of 12.5 m, probably from short-circuit to globular. Also, a clear tendency of increase in arc stability for those welds performed at greater depths could be noticed, as well as better weld metal quality. On the other hand, those consumables with CaCO3 added to the coating exhibited the best arc stability for welds performed at shallow depths.

scholarly journals Analysis of Welding Position and Current on Mechanical Properties of A36 Steel using Shield Metal Arc Welding

2021 ◽  
Vol 2117 (1) ◽  
pp. 012001
Author(s):  
F Vietanti ◽  
A F Rajan ◽  
A A Arifin ◽  
D H Feryanto ◽  
Suheni ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Base Material ◽  
Welding Current ◽  
Butt Joint ◽  
A Value ◽  
Metal Arc Welding ◽  
Strict Condition ◽  
Joint Connection ◽  
A36 Steel ◽  
Welding Position

Abstract Welding is an assembly process that is most often used in the world of construction today. Welding is often used for repairing and maintenance of all tools made of metal, both as a process for filling cracks, temporary joining, or cutting metal parts. This study aims to determine the effect of welding current and position on the tensile strength and Vickers hardness (HV). This study uses ASTM A36 steel plate as base material. The variation of welding currents used are 90A, 110A, and 130A combine with variations in positions 1G, 2G, and 3G. The electrode used in this study is E6013 electrode with a diameter of 3.2 with a butt joint connection. All of processes are performed in room temperature with a strict condition. The results are as follow, the highest Ultimate Tensile Strength is obtained at 90A current and 3G position with a value of 471.93 MPa. For the highest hardness in the Vickers test, it is also obtained at 90A current and 3G position with a value of 242.20 Kgf/mm2.

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