UPSET WELDING
Upset welding (UW) is a welding process which makes use of the resistance offered by the two metals, which are to be joined, to electricity and thus helping the metals to be fused along the butt joint or over the area in which we should make the fusion. Pressure is applied to the joint in such a way that it’s application will enhance the welding process. An upset weld (source: Jefferson welding Encyclopaedia 18 Edition)
PRINCIPLE:
The welding process takes place in the solid state of both the metals that are to be joined. The input that is given is resistance heating to the metal at the joint. The heating is provided in such a way that the metal reaches its recrystallization temperature wherein the crystal structures of the
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The workpieces which are to be joined are fixed on the machine such that the fay surfaces touch each other.
2. Parts are to be clamped
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Current is provided by a resistance welding transformer. This transformer converts normal line power to high power current. No-load secondary voltages required ranges from about 0.4 to 8 V. The upset force applied can either be controlled automatically using pneumatics or manually by applying mechanically or hydraulically the required force.
ADVANTAGES DISADVANTAGES
• Fast process when compared to other welding processes.
• Can be used for any alloy which are difficult to weld using normal methods
• Have higher strength welds
• Due to non-melting process, properties of the base material are not altered.
• Can be used for joining very large structures to thin wires. • Permanent deformation on the welded body
• Initial setup cost is high
• Requires very high power supply on a continuous basis
APPLICATIONS:
• Used mainly in wire manufacturing industries.
• Used in joining bars, tubes etc. in industries so as to obtain the required length.
• Used in large structural fabricating industries.
• Used to join capsules, vessels, cylinders
According to Pickwelder, “This type of welding is used in welding wide varieties of metals and alloys such as magnesium, steel, stainless steel, nickel, copper, aluminum, bronze and many other nonferrous metals” (James). MIG can be used with a number of different metals making it very diverse. This is a good quality as it can bond to any metal with the right settings and welding wire. According to JobsiteUS, “A range of material thicknesses can be welded from thin gauge sheet metal right up to heavier structural plates” (Peter Apalais). MIG welding can weld through all different metals and their thicknesses. This is good for production because this process can do both while some processes can only weld thin or thick metal. According to Coastal Media Brand, “Capable for a variety of applications, including – trailer hitches, auto body repair and restoration, farm/ranch equipment, household projects, repairing wheel barrows, bicycles, etc” (Coastalmedia843) The multivariate MIG has so many possibilities that can be used for nearly anything that involves repair work or production. It is good for commercial use and even for your home. This shows the extent that MIG welding can go up to, and the list goes on. All in all Gas Metal Arc Welding is the best process that can be used for an expansive amount of uses for anything consumer grade and
Welding started back in the medieval days. But there was only one welding process, and it was called forge welding. Forge welding is the use of heating metal, shaping it (by pounding it with a hammer), then cooling it. People back then had to go to their local black smith go get things fixed. Some tasks required black smiths to be extremely precise, and have an even level of thickness throughout the piece of metal that they are foraging.
Thomas Jefferson said, “I find that the harder I work, the less I call it work”. I have often found myself in situations where I needed to fix something but could not because it is metal. I believe this might be why I began to show interest in welding. There is great satisfaction in being able to create or fix a metal object on your own. As a Certified Welder, I will be able to combine my hardworking drive with my personal interest in metal working to be a successful welder. This paper will explore the job description, requirements, and salary expectation for a Certified Welder.
"Welding Processes, Welding Faults, Defects & Discontinuities For NDT Technicians Part 3." Hera.org. Hera, n.d. Web. 15 Mar. 2014. .
What is welding some may ask. “Welding is the use of brazing or soldering to join together or split apart pieces of metal.” Says miller electric inc. The First recorded forms of welding was from the bronze age when metal boxes were made by “pressure welding lap joints together.” In medieval times welding was used by hammer to forge weapons of different types. “It was actually not until the late 1800’s that traditional welding
A tool for opening paint cans. Sometimes used to convert common slotted screws into non-removable screws.
There is different types of rods and different types of ways to weld. You need a lot of training for it. There are many schools and colleges you can go to receive welding education. The most common welding processes are Gas Metal Arc Welding, Flux Core Arc Welding, Gas Tungsten Arc Welding and Shielded Metal Arc Welding. The easiest of these is the Gas Metal Arc Welding. Welding options are stick, flux core, tig, and mig. The pipeline tig and stick welds a lot more than the other .The pipeline use many types of techniques but, the most common on the pipeline is downhill root pass and the up hill pass. The median annual wage of welders, cutters, solderers, and brazers is
"Purchasing Your First Robotic Welding System | Lincoln Electric."Lincolnelectric. N.p., n.d. Web. 08 May 2014.
A means to adjust the center distance between the hob and work piece for different size work pieces and hobs
were used in nature and strong and weak were used in quality. In the procedure
Welding is an art, science, and high paying career all in one. Welding is the most effective way to join two pieces of metal, it is the only way to join them so they act as one. Numerous things in our daily lives has been welded from coffeepots to skyscrapers. Welding can be done almost anywhere outdoors, indoors, underwater, and even space (“Welding Basics”). It is practically
Sasaki, Tomoaki. "Study for TIG-MIG Hybrid Welding Process - Springer." Linked.springer.com. Springer, 01 Jan. 2014. Web. 28 Apr. 2014.
used to make products such as plastic lumber, toys, containers, carpet, fiber fill for jackets
?Automation Reduces Weld Spatter? Welding Design & Fabrication (Jun. 2001): 37 EBSCOhost. Online. Nov. 2002 .