SOM Report
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This report summarizes an experiment conducted to test the tensile strength of a welded steel specimen. A group of 5 students welded together two steel rods and tested the welded specimen on a universal testing machine. Their observations showed that the welded region withstood less tensile stress than a normal un-welded specimen, as hypothesized. The report documents the objective, instruments used, welding and testing procedures, observations recorded in a table, and conclusion that the welded material had lower tensile strength than the original non-welded material.
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Submerged arc welding (SAW) involves heating metals with an arc between a bare metal electrode and the workpiece. The arc is shielded by a blanket of granular fusible material on the workpiece. Key aspects of SAW include:
- Equipment includes a welding machine, wire feeder, flux hopper, and sometimes a travel mechanism.
- The arc is not visible as it is submerged under the layer of flux. The flux forms a slag that protects the weld area.
- Filler metal is obtained from the continuously fed electrode. As the electrode melts, the metal transfers through the arc to the workpiece where it becomes the deposited weld.Numerical simulation of friction stir butt welding processes for az91 magnesi...
Numerical simulation of friction stir butt welding processes for az91 magnesi...eSAT Publishing House
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This document describes a numerical simulation of friction stir butt welding for AZ91 magnesium alloy. A 3D nonlinear thermo-mechanical finite element model was developed using ABAQUS to predict temperature distribution and evaluate mechanical properties during the welding process. The model considers heat generation due to friction between the rotating tool and workpiece. Results show the maximum temperature reached was 483属C and residual stress was highest along the weld path. Pressure was also highest in the weld midpoint. Graphs of internal energy and strain energy over time were produced from the simulation results.Numerical simulation of friction stir butt welding processes for az91 magnesi...
Numerical simulation of friction stir butt welding processes for az91 magnesi...eSAT Journals
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Abstract Friction Stir Welding (FSW) is a solid state welding process. In particular, it can be used to join high-strength aerospace magnesium and other metallic alloys that are hard to weld by conventional fusion welding. It was performed on 4 mm thickness AZ91 Magnesium alloy. Magnesium alloy have more advantage than aluminum such as light weight, softer, tendency to bend easily, cost effective in terms of energy requirements so magnesium alloy has selected in this FSW technique. In friction stir welding (FSW), a momentous residual stress is present in weld due to complex nature of fixturing system compared to fusion welding. These residual stresses can affect properties of welded components during service. Therefore, for estimating magnitude of welding residual stresses and their nature of distribution along with thermal history, a three dimensional non- linear thermo-mechanical finite element (NLTMFE) model using ABAQUS/ CAE package was developed for butt welded magnesium alloy AZ91. The objective of this work is to predict the temperature distribution in both materials and evaluate the mechanical properties during the friction stir welding on magnesium alloy. Keywords: Fsw, Nltmfe, Abaqus, Cae, Az91.Spatter Reduction by Prateek Biswas
Spatter Reduction by Prateek BiswasPrateek Biswas
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Project on Spatter Analysis and Reduction in Automated Welding Plant B, Maruti Automobile Plant, Manesar.
Prateek Biswas
Summer Trainee
MSIL, WBMS
Manesar PlantMechanical Testing.pptx
Mechanical Testing.pptxAjith Damodaran
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The document discusses various mechanical property tests used to characterize materials including tensile tests, hardness tests, and impact tests. It provides details on how these tests are conducted and the types of properties that can be determined from the test results, such as strength, stiffness, ductility, and toughness. Both destructive and non-destructive methods are covered. Specific tests discussed in detail include tensile testing, Brinell hardness testing, Rockwell hardness testing, Charpy/Izod impact testing, and wear testing.QUALITY ASSURANCE
QUALITY ASSURANCEShankha Goswami
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This document discusses quality assurance for metric thread screw production. It defines quality assurance as activities that ensure a product will meet quality requirements. It describes implementing quality assurance through mechanical integrity testing and conforming to applicable standards. It also provides an overview of screw threads, describing the nominal contour and tolerance series for ISO metric screw threads. It discusses material selection factors and conducting tests to measure thread geometrical accuracy and preload force during the manufacturing process.Chapter4 mechanical testing
Chapter4 mechanical testingWan Zulfadli
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This document discusses various mechanical testing and non-destructive testing methods. Mechanical tests determine properties like strength, hardness, elasticity and ductility by applying loads or forces that often damage specimens. Hardness tests include Brinell, Vickers and Rockwell methods. Impact tests include Izod and Charpy tests. Non-destructive tests like magnetic particle, ultrasonic and X-ray methods detect subsurface flaws without harming samples.Analysis of Tensile Strength Properties for FG260 Welded Cast Iron : A Review
Analysis of Tensile Strength Properties for FG260 Welded Cast Iron : A ReviewIRJET Journal
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This document reviews research on analyzing the tensile strength properties of welded cast iron FG260. It discusses how gray cast iron can be welded if cooling rates are controlled during and after welding. The welding was carried out using oxyacetylene welding and nickel-based filler metals to join gray cast iron pieces. Tensile strength and hardness tests were conducted before and after salvaging castings with defects via welding. The studies found that after welding, the tensile strength and hardness properties of the cast iron increased. A literature review discussed how casting process parameters like pouring temperature and time can affect tensile strength and hardness, but pouring time has the most influence.EXPERIMENTAL ANALYSIS OF WELD PARAMETERS FOR FRICTION STIR WELDING OF ALUMINI...
EXPERIMENTAL ANALYSIS OF WELD PARAMETERS FOR FRICTION STIR WELDING OF ALUMINI...IRJET Journal
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This document analyzes the weld parameters for friction stir welding of aluminum 6082 plates. Six specimens of aluminum 6082 were friction stir welded with varying root gaps (0.25mm, 0.5mm, 0.75mm) and tool speeds (1400 rpm, 1800 rpm). Hardness tests using Brinell and Vickers hardness testing machines, tensile tests using a universal testing machine, and microstructure analysis under an optical microscope were performed on the specimens. The results showed variations in hardness values, tensile strength, and grain structure depending on the root gap and tool speed used for friction stir welding.FYP PROGRESS PRESENTATION FOR WELDING INSPECTIO
FYP PROGRESS PRESENTATION FOR WELDING INSPECTIOMuhsinAminudin
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This presentation compares the strength of a conventional butt joint design to a new butt joint design using friction stir welding (FSW). The objectives are to study the weld strength, hardness, and heat affected zone of each joint design. Methodology discusses preparing aluminum alloy samples, using a milling machine for FSW, testing weld strength via tensile testing and hardness via Vickers hardness testing. Initial results showed both new designs failed while the conventional butt joint passed strength testing. Hardness testing also observed the heat affected zone. Further trials are still in progress.IRJET- Analysis on Thread Rolling using Flat Dies
IRJET- Analysis on Thread Rolling using Flat DiesIRJET Journal
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This document analyzes thread rolling using flat dies. It discusses how thread rolling is a cold forging process that uses reciprocating motion between two flat dies to form threads on a workpiece. An experiment was conducted using aluminum workpieces between 6-16mm in diameter rolled with flat dies on a shaper machine. Loads between 157-200kg were required. Both experimental and analytical results for rolling load, stresses, and power consumption are presented and compared. Finite element analysis in ANSYS was also used to model stresses and deformation during thread rolling with different sized workpieces. The results show thread rolling can effectively form threads on workpieces up to 14mm in diameter using this setup.Study of effect of cooling rate on mechanical and
Study of effect of cooling rate on mechanical andeSAT Publishing House
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IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and TechnologyEffect of pouring temperature and stirring speed on
Effect of pouring temperature and stirring speed oneSAT Publishing House
油
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and TechnologyBHEL CFFP TRAINING 
BHEL CFFP TRAINING vipul nigam
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The document summarizes the summer training presentation at Bharat Heavy Electricals Limited's Central Foundary Forge Plant. It describes the key processes involved in steel melting including the electric arc furnace, secondary steel making using VAD and VOD, and sample testing. It also discusses non-destructive testing methods like dye penetration and radiography testing. Destructive testing methods covered are tensile and hardness testing. The central foundary forge plant divides production into steel melting, foundary, forge, and machine shops.project.pptx
project.pptxDANIELDAS8
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This document summarizes a student project to optimize friction welding of a tube plate using an external tool through a hybrid approach. The project aims to join aluminum tube to plate using friction welding with an external tool (FWTPET). Key process parameters like tool speed, pin clearance, and shoulder diameter are investigated. Initial results show better weld interface and microstructure at optimized parameters of 1030 rpm, 1 mm, and 30 mm. Further analysis of mechanical properties will provide insights into parameter optimization to produce high quality welds through this hybrid approach combining experiments and modeling.WeldingProject_Group2A
WeldingProject_Group2AKristopher Saladin
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The document summarizes an experiment to determine the effect of travel speed and arc current on the material properties of welds in 1075 steel using an autonomous gas tungsten arc welding machine. Six samples were welded at two different travel speeds (7 and 10 inches per minute) and three arc currents (100, 125, and 150 amps). Hardness tests found that the weld created at 7 inches per minute produced the highest hardness values, indicating better penetration and tensile strength compared to the weld created at 10 inches per minute. However, limitations in the testing process may have skewed some results. Overall, a travel speed of 7 inches per minute and arc current of 150 amps produced the best weld forIRJET - Effect of Groove Angle on Tensile Strength and Micro-hardness of AISI...
IRJET - Effect of Groove Angle on Tensile Strength and Micro-hardness of AISI...IRJET Journal
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The document summarizes a study that investigated the effect of groove angle on the tensile strength and microhardness of gas tungsten arc welded AISI 304 stainless steel joints. Three joints were fabricated with groove angles of 45, 60, and 75 degrees and root gaps of 1, 1.5, and 2 mm, respectively. Tensile and microhardness tests found that the joint with the smallest groove angle of 45 degrees possessed the highest tensile strength of 652 MPa and maximum microhardness of 236 HV. In general, tensile strength and microhardness decreased as groove angle increased. The study concluded that smaller groove angles produced welded joints with better tensile strengthStudy and Analysis of the Fatigue Behaviour of Friction Stir Butt Welded Dis...
Study and Analysis of the Fatigue Behaviour of Friction Stir Butt Welded Dis...IRJET Journal
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1) The study analyzed the tensile strength and fatigue behavior of friction stir butt welded dissimilar aluminum alloys AA6082 and AA5754.
2) Fatigue tests showed the dissimilar welds had lower tensile strength and fatigue strength than the base materials AA6082 and AA5754, but comparable strength to AA5754.
3) The fatigue performance of the AA6082 and AA5754 friction stir welded joints showed a shallower stress-life (S-N) curve with improved fatigue performance at lower stress ranges.Numerical simulation of friction stir butt welding processes for az91 magnesi...
Numerical simulation of friction stir butt welding processes for az91 magnesi...eSAT Publishing House
油
SOM Report
- 1. REPORT STRENGTH OF MATERIALS Faculty: Mr. Vijay Kumar Jatti Group Members:- 1. Nakul Agrawal - 650 2. Manish Manoj - 645 3. Sujith Reddy - 648 4. Navneet Roy - 651 5. Girish - 629 CONTENTS INTRODUCTION DESCRIPTION PROCEDURE OBSERVATION CONCLUSION
- 2. 1 | P a g e INTRODUCTION OBJECTIVE: - To conduct the tensile stress test on a welded specimen. HYPOTHESIS: - Welded region has lesser tensile stress capacity in the welded material. Instruments used: - specimen to be tested, metal arc welding machine, bench grinder, hacksaw, chipping hammer, wire brush, universal testing machine. DESCRIPTION:- This project helps us in finding out that welded specimen (esp. at the welded region) has lower tensile strength when compared to a normal specimen. A metal rods tensile strength solely depends on the arrangement of particles at the microscopic level. Ideally when welding is done to two rods, it should possess the same tensile as a single piece original specimen. But practically it is not possible. Therefore for an effective weld to take place, a lot of parameters are to be considered, out of which slag removal and the initial alignment of the rods are the major parameters for this project. Then the welded specimen is subjected to tensile stress test using the universal testing machine.
- 3. 2 | P a g e PROCEDURE:- Firstly,chamferthe piecesof torrsteel specimenon the table grindingmachinetoreduce the diameter.The material shouldbe chamferedtoreduce itsdiametersothatweldingcanbe done easilyandprecisely.The chamferedpartshouldbe made intoaconical shape. NOTE: wearsafetygoggleswhiledoingthisjob!!!! 1) Weldboththe piecesof torr steel onmetal arc weldingmachine.Setthe voltage upto240v. Weldingmustbe done inthree rounds. While doingwelding,removethe slag usingchippinghammer.Alsomake sure noholesare leftin weldedpart. Now dothe finishingof the weldagainontable grindingmachine. 2) cut the extralengthusinghacksaw to make the complete lengthof 260 mm.
- 4. 3 | P a g e 1) Now,dothe tensile strength testonuniversal testing machine. 2) Note downthe readingsof elongationandload. 3) Plotthe graph and calculate the necessaryparameters
- 5. 4 | P a g e OBSERVATIONS OBSERVATION TABLE:- ELONGATION(in mm) LOAD(in KN) 0 0.42 0.5 34.62 1.0 37.86 1.5 39.94 2.0 42.42 2.5 44.32 CONCLUSION: - Thus we conclude that the tensile strength of the welded material is less than the non- welded material of same specimen.