...Fabfurnish Following my under graduation, to tap the taste of start ups and ever growing interest in marketing – I started working ……<framing this> The front end marketing analytics, where direct cum indirect interaction with the customers and their reaction pushed us how to increase the conversion rate and engagement with audiences. <need to frame this> Customer Insights – based on that taking further actions Launching the new campaigns on facebook and optimizing them on the key metrics like CTR(Cost to revenue Ratio),CPC(Cost per Click),CPV(Cost per Visit)– lowering the CRR (Cost to Revenue Ratio – inverse of ROI) bought down by 70%. Optimization was done on the basis of reports in which number are stacked up from Google Analytics and FB Power Editor to check the bounce rate and Conversion Rate Good with reports and reports making Engaging in Mobile as this was the time in India (late 2014) where mobile grew as a major player in the advertising industry and various different inventory of FB like MPA (multiple ads) and doing the category wise segmentation & performing the strategic group analysis which help in growth of 40% mobile revenue. - - -> key insight ran ads of those products which have low basket value (<1000 INR) since audience have more interaction for these products on mobile platform and thus increasing the funds in this segment and generating a 14 lac transaction in a single day through optimized reports * To show interest in...
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...preheat holes or in a two-piece tip the cutting tip will overheat and explode. a. True b. False 4. A cutting torch is used for cutting, welding, and heating. a. True b. False 5. Most hand torches can cut metal up to seven inches thick. a. True b. False 6. It is possible to cut steel that is four feet thick. a. True b. False 7. Acetylene should be used in a two-piece cutting tip. a. True b. False 8. Acetylene cutting tips should be one piece with 1 to 6 preheat holes. a. True b. False 9. The chance of a flashback is less with low pressure regulator settings that with high pressure settings. a. True b. False 10. The oxyfuel gas cutting torch works as a result of the metal being rapidly melted. a. True b. False 11. Hard slag is easier than soft slag to remove. a. True b. False 12. Distortion is not a problem if the correct fuel gas is used. a. True b. False 13. By looking at the drag lines in a cut, you can determine whether the cut was made correctly or incorrectly. a. True b. False 14. The two major methods for controlling distortion while make a cut is making two parallel cuts at the same time and speed and making a short cut and skipping a strip to keep the plate from separating. a. True b. False 15. The advantaged of a combination welding and cutting...
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...Electroslag Welding Electroslag Welding Electroslag Welding is a welding process, in which the heat is generated by an electric current passing between the consumable electrode (filler metal) and the work piece through a molten slag covering the weld surface. Prior to welding the gap between the two work pieces is filled with a welding flux. Electroslag Welding is initiated by an arc between the electrode and the work piece (or starting plate). Heat, generated by the arc, melts the fluxing powder and forms molten slag. The slag, having low electric conductivity, is maintained in liquid state due to heat produced by the electric current. Electroslag welding (ESW) is a highly productive, single pass welding process for thick (greater than 50 mm) materials in a vertical or close to vertical position. An electric arc is initially struck by wire that is fed into the desired weld location and then flux is added The slag reaches a temperature of about 3500°F (1930°C). This temperature is sufficient for melting the consumable electrode and work piece edges. Metal droplets fall to the weld pool and join the work pieces. Electroslag Welding is used mainly for steels. Electroslag Welding equipments Power source Wire feeder Electrode guide tube Retaining Blocks Welding head and Controls Power source 100 % duty cycle AC and DC (EP) power source 10,000 Amp OCV 60V (range is 30 V to 100 V) Remote controled Wire feeder Feed roller Drive motor Provide oscillation...
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... JULY INTAKE 2012 RESISTANCE WELDING REPORT NAME | TRAINEE ID | JACK LAI KAR HAO | 323265 | ALLEN LAW CHI SEAN | 323359 | L.F NAME : MOHD. FADZIL BIN MUSA CONTENTS m/s Overview and introduction 3 Variables in welding process 4 How is resistance welding work 5 Types of resistance welding 6 Advantages and disadvantages of resistance welding 10 Application of resistance welding 11 Conclusion 12 Overview of Resistance Welding Introduction In simplest terms, welding is a process by which two or more pieces of metal are joined by applying heat and pressure. Back in the good old days, blacksmiths and other crafty people would heat metals in a furnace and then weld them by hammering the red-hot metals together. By hammering the metals as they cooled, the weld would be made stronger. This heating-and-hammering method is known as forge welding. While forge welding worked quite well for most of the welding done back then, today's welding requirements are a bit more advanced. After...
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...late 1800’s to the early 1900’s welding was invented. Welding has helped us in so many ways when something become broken. Not only are there many kinds of welding, but there is one that has to do with everybody’s favorite topic in chemistry, thermochemistry! That type of welding is called thermite welding. We all know that thermite can be dangerous and can destroy things, but with the railroads it can put things back together. “A blast furnace that fits in a vest pocket.” “In 1893, a German chemist, Dr, Hans Goldschmidt, was in Berlin, developing a process that could weld thick sections of steel together in the field. While doing that he made the process of thermite welding on accident. With that accident he discovered that thermite...
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...| THERMIT WELDING | RESISTANCE WELDING | FRICTION WELDING | PRINCIPLE OPERATION | * the heat is produces by highly exothermic reactions between metal oxides and a metal reducing agent * is used in this process to melt the metal. After the metal is in a liquid state, it is poured between the two workpieces to form the joint | * Apply force and current through electrodes contacted metal parts to be welded; and resistance heat is generated at the interface of metal parts and makes a nugget, resulting in melt joint * the coalescence of metals is the result of the heat obtained from resistance offered by the work piece to the flow of electrical current | * is the solid state welding process which produces coalescence of material by the heat obtained from a mechanically induced sliding motion between the rubbing surfaces of two cylindrical work pieces under pressure. | APPLICATIONS | * for butt welding pipes end to end * for welding broken frames of machines * replacing broken pieces or large gears | * is used for joining vehicle body part * for joining wire end * pipes of gas oil & water pipeline | * used in shipbuilding industries * Widely being used in shipbuilding industry to join sheet and plate material. * Used with thermoplastics. | 1)The difference between thermit welding, resistance, & friction welding 2)Comparison between Cold Isostatic Pressing (CIP) & Hot Isostatic Pressing (HIP) Isostatic pressing is a powder processing...
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...Ben Cantrell Mr. Riley Brit/Lit 20 October ,2016 History of Welding Well in the history of welding. where the first welding was spotted was in Egypt during the 4000 B.C. (Welding history is thorough to begin in Egypt in starting in 4000 B.C in seral civilization started with cooper then progressed bronze to silver to gold to iron.) (Jeff grill). Just like on down the time line they have discovered tin. (Humans started working with bronze between 3000 and 2000bc. During the bronze and small gold circular boxes.) (Jeff Grill). Just like all the golden statues in Rome or even Egypt. That’s how they made their swords amour helmets. (The Samurais made swords using soldering) (Jeff Grill). Just like a little way down the timeline. (Cobalt used by Persians to color glass) (Jeff Grill). The Persians used this technique to color glass to make a picture in the church windows. In Egypt they used a technique called brazing. (painting discovered of brazing on a tomb of Vizien Rekh-mi-re) (Jeff Grill). The Egyptians also use a blow pipe and soldering trick to make a cups or vases. (Egyptians used solider and a blow pipe to in 1330bc for metal soldering) (Jeff Grill). In the 1000bc they found out how to bend metal and make stuff. (Iron work started bending metal while the use of a furnace to produce...
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...NATIONAL INSTITUTE OF TECHNOLOGY DURGAPUR A PROJECT REPORT ON “SPOT BURR REDUCTION BY IMPROVING THE WORKABILITY OF SPOT GUN” Submitted in the partial fulfilment of the requirements for the award of the Degree of Bachelor of Technology in Mechanical Engineering Submitted By Mayukh Biswas ( 10/ME/27) Project Work Carried Out at Toyota Kirloskar Motor Private Limited Under the Guidance of Mr. Abhinand S AM Underbody, Weld Shop ( Plant 1 ) Toyota Kirloskar Motor (TKM) NATIONAL INSTITUTE OF TECHNOLOGY DURGAPUR (DEEMED UNIVERSITY) M.G. ROAD, DURGAPUR 713209 CERTIFICATE This is to certify that the Project work entitled “SPOT BURR REDUCTION BY IMPROVING THE WORKABILITY OF SPOT GUN” Carried out by Mayukh Biswas bearing R. No. : 10/ME/27 in partial fulfilment for the award of Bachelor of Technology in Mechanical Engineering of National Institute of Technology, Durgapur. It is certified that all corrections/suggestions indicated for internal assessment have been incorporate in the Report. The project report has been approved as it satisfies the academic requirements in respect of project work prescribed for said Degree. Mr. Abhinand S AM Underbody, Weld Shop (Plant 1) Toyota Kirloskar Motor (TKM) Ms. Mili Mathew HR Learning & Development Toyota Kirloskar Motor (TKM) Acknowledgement It gives me great pleasure to acknowledge the numerous personalities involved in lending their help to make this Project Work titled “ SPOT BURR REDUCTION...
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...Variations of Joint Designs or Energy Directors For the design of plastic parts for assembly with ultrasonic energy, many recommendations exist to save time, energy and tooling modifications. The first step for a designer is to determine the most suitable joining technique. The following variations are possible: Ultrasonic Welding Ultrasonic Swaging, Staking, Spot-Welding Ultrasonic Insertion Ultrasonic Welding The molten material builds at the contact area of the energy director between the to be welded parts. The ultrasonic waves are transferred through the part to the joint area. Common "standard" joint designs include: Basic 90 Degree Energy Director 90 Degree Energy Director Step Joint 90 Degree Energy Director Tongue & Groove Herrmann Ultrasonics Mash Joint Double V-Point Tongue & Groove The recommended process examples listed above can be varied with inserted gaskets or in-molded 2K injection molded gaskets. Ultrasonic Swaging, Staking, Spot-Welding please click for enlargement In addition to conventional types of joint design for bonding injection molded plastic parts, ultrasonic welding can be used in a verity of forms to accomplish a mechanical bond when only one part is of thermoplastic material. Common applications include: Swaging, for deforming or bending an area of a plastic piece to trap the other part (of different plastic or other materials). Through swaging, different kinds of plastic parts...
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...revolution to that of Yield strength, Ultimate strength and Weld quality are obtained. Also, simulations are performed, and the actual values are compared with the predicted values. Finally, multi-objective optimization of mechanical properties fuselage aluminium was undertaken using Genetic Algorithm to improve the performance of the tools industrially. AIMS AND OBJECTIVES Objectives of the dissertation include Understanding the basic principles of operation of Friction Stir Welding (FSW). Gaining experience in modelling and regressive analysis. Gaining expertise in MATLAB programming. Identifying the best strategy to achieve the yield strength, Ultimate Tensile strength and Weld quality of Friction Stir Welding. Performing optimization of mechanical properties of FSW using Genetic Algorithm. I To draw conclusions on prediction of mechanical properties of FSW optimization of aircraft fuselage aluminium. ACHIEVEMENTS The basic principles of friction welding of the welding operations are well studied and understood. The theoretical concepts of modelling techniques are familiarised. Gained expertise in MATLAB programming. The best model that can predict the mechanical properties of friction stir welded aircraft fuselage aluminium has been developed using ANFISRegressive modelling. Performed optimization of mechanical properties friction stir welded...
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...16 PREPARING TO WELD 17 17 17 18 18 2 3 COMPRESSED GASSES AND EQUIPMENT HAZARDS ................................... 3 ADDITIONAL SAFETY INFORMATION ......... 4 PREPARING A SAFE WELDING WORK AREA.. PREPARING THE WORK PIECE ............. ALUMINUM WELDING PREPARATION ........ CONNECT WELDER GROUND .............. PRODUCT DESCRIPTION 5 5 5 5 5 OPERATION GETTING TO KNOW YOUR NEW WELDER .... SETTING THE CONTROLS ................. HOLDING THE GUN ....................... Position of the Gun to the Work Piece ......... Distance from the Work Piece ............... LAYING A BEAD .......................... CLEANING THE WELD BEAD ............... 19 19 19 20 20 21 21 21 SPECIFICATIONS ......................... WELDER CONTROLS AND THEIR FUNCTIONS. DUTY CYCLE ............................. INTERNAL THERMAL PROTECTION .......... ASSEMBLY AND INSTALLATION 6 6 6 7 7 7 8 8 8 9 UNPACKING YOUR WELDER ................ INSTALL THE GROUND CLAMP .............. INSTALL WELDING GUN ASSEMBLY .......... PROVIDE REQUIRED POWER ............... Power Requirements ....................... Connect Welder to Power Source ............. Extension Cord Use ........................ INSTALL TANK TRAY AND BRACKET .......... SELECT SHIELDING GAS ................... WELDING TECHNIQUES...
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...Friction stir welding is a promising solid state joining process and is widely being considered for aluminum alloys. In this work, the microstructural and corrosion properties of friction stir welded 7075 Al alloy were studied. The microstructures of the base metal, bore metal, thermo-mechanically affected zone (TMAZ) and weld region were characterized by optical microscopy and transmission electron microscopy. Micro-hardness profile was obtained across the weld. The pitting corrosion properties of the weldments were studied in 3.5% NaCl solution. Friction stir welding of this alloy resulted in fine recrystallized grains in weld nugget which has been attributed to frictional heating and plastic flow. The process also produced a softened region in the weld nugget, which may be due to the dissolution and growth of possible precipitates, identified as Mg32(Al,Zn)49. Corrosion resistance of weld metal has been found to be better than that of TMAZ and base metal. 1. INTRODUCTION High strength precipitation hardening 7XXX series aluminum alloys, such as 7075 are used extensively in aerospace industry. These alloys are difficult to join by conventional fusion welding techniques. Hence realizing a fusion-welded joint in such alloys without impairing the mechanical properties is a difficult task for the welding engineer. Consequently the welding engineer has to rely on rivets and fasteners with substantial increase in fabrication cost and structure weight. The process of Friction...
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...The Art of Welding Welding is defined as the process of joining together metal pieces or parts by heating the surfaces to the point of melting using a blowtorch, electric arc, or other means, and putting them together by pressing or hammering. Welding is more of an art rather than a skill. It takes a special person to be able to completely master the art. Skills that a welder would need to have would be a very detail-orientated mind set. (Welding Basics) anyone can weld, but nobody is going to pay someone to weld something together crappily. The reason I am doing my research on welding is because I want to figure out if this is what I would like to do the rest of my life. I only have minor experience with welding. But, the experience I have had so far has been fun and exciting. Most of the work I have done with welding has involved my cars which is most likely the biggest reason that I have become so interested in this field of study. I have figured out that training for welding workers can range from a few weeks of school or on-the-job training for low-skilled positions, to several years of combined school and on-the-job training for highly skilled jobs. Training is available in high schools, and other types of institutions such as technical institutes, community colleges, and private welding schools. The Armed Forces have welding schools as well. (Jeffus,153) While some employers provide basic training, they prefer to hire workers with experience or more formal training...
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...solution, a common, single pipeline was selected by Statoil for transport of the multiphase well stream from the two oil reservoirs. The Norne field is located at 66° North and subjected to strict environmental requirements. Therefore a Carbon steel pipeline, built with a corrosive resistant alloy layer ( CRA ), had been selected for the resistance against the corrosive fluid without the use of chemicals. An implication of this construction method is that the pipeline girth welds have to be made with an austenitic welding consumable (typically Inconel), which is very difficult to inspect using ultrasonic testing method. Furthermore the reeling process used for the pipeline installation require severe weld flaw detection capabilities. An extensive AUT-CRA qualification program has been utilized by Technip and Statoil to confirm that the proposed CRA inspection method meet the quality standards and requirements of DNV OS F101 Appendix E. Throughout the qualification process it has been verified that the CRA inspection technique adequately detects and qualitatively sizes the weld defects that also have been observed in destructive, microscopic evaluation. The so called Primary & Coincidence CRA inspection method* has been demonstrated to be very versatile in comparison with...
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...Introduction Resistance welding covers a wide range of specific processes, mainly use for highly automated or even fully mechanized welding application, the majority in mass production. All these processes, except one (ESW, electroslag welding), need a mechanical clamping and pressurizing system to compress the workpiece areas intended to be welded prior to welding. Thus, these welding applications are categorized as resistance pressure welding processes (See figure 1-1) Figure 1-1 principal types of resistance weld In Resistance Spot Welding, passage of a relatively high welding current I [kA] throughout a locally compressed workpiece area (by means of an electrode force F [daN]) during a properly defined period of time t [cyc, ms] heats this area due to resistive heating following (Figure 1-2) Figure 1-2 principal of resistance of spot welding Values for Welding Force [daN], Welding Current [kA] and Welding Time [cyc, ms] are available in database format, and these values are commonly used to make a base setting to start from. Fine tuning within the parameter range (weldability lobe) can be done in order to optimise towards a specific application according to EN ISO 14327-2004 (Resistance welding – Procedures for determining the weldability lobe for resistance spot, projection and seam welding). Such a weldability lobe...
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