4.0 Discussions
In this experiment, a butt joint was required to be made between two mild steels of dimensions 50 mm x 85 mm x 6 mm. A butt joint is one of the five basics joint in welding. Mild steel electrodes (MS 6013) of diameter 2.6 mm were provided to be used to join the two pieces of metal. For the diameter, the minimum amperage needed is 60A and the maximum it can retain is 100A.
For the welding to be successful, an arc gap of 2 mm must be maintained throughout the operation. Also, the travel speed of the electrode must be slow in order to produce a uniform weld and the current must be kept constant in order to produce a stable arc. The welding power supply was set to number 2 of scale 1-5 to provide the amperage between 60A to 100A.
After a number of practice, the first welding sample was made. The sample was made with minimal welding experience and hence resulting in an unsatisfactory welding. There were obvious holes in the weld area. Other than that, the weld was not uniform. There were areas that was too thin and other areas that
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From the first-hand experience obtained from the experiment, further understanding has been provided. By doing the hammer test, the strength of the metal can be identified and the quality of welded metals was also assessed. In can also be concluded that the second sample has much better quality than the first sample from the hammer test and visual inspection. All in all, a good travel speed, current and arc gap must be present in order to produce a good weld of metals.
6.0 Reference
Hicks, J. (2000). A Guide to Designing Welds. Cambridge, England: Abington Publishing.
Gourd, L. M. (1995). Principles of Welding Technology (3rd ed.). Bristol, Great Britain: Edward Arnold.
Helzer, S. C. & Cary, H. B. (2005). Modern Welding Technology (6th ed.). United States of America: Pearson Prentice
...anged innumerable times over the project's life. Continual rework and time delays had hampered progress. Bolger had reported design errors that necessitated the refitting of complex equipment and rework of the aluminum welding. Materials requirements included the use of welded aluminum. Bolger normally employed only steel welders; aluminum welders were in short supply and impatient during work stoppages. The Bolger contract was cost based plus a fixed fee. A particularly disturbing problem was Bolger's cost reporting system. Bolger contract negotiators waited for up to three weeks for cost data.
Welding is a very important job in today’s society. With new building designs, and bridges to every day metal products, welders are needed to do these tasks. Almost everything that you use every day has some sort of weld to it.
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.
Welders can use hand held welders or even robotic welders to produce welds. Both equally requiring a incredible amount of knowledge. They can also fill holes, produce structures and build custom parts for automotive race shops. Welders often work fulltime on shipyards, oil rigs, and pipelines or anywhere else where a specific job is needed. Welders are often required to interpret blueprints or sketches and weld accordingly to fulfill job duties. Arc welding is the most common type of welding today and is what most welders use. (bls) There are over 100 different welding processes that a welder can learn how to use however, Stick, Tig and Mig are the 3 most common used in the industry. These are used most to maintain equipment
"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
The first evidence of welding dated all the way back to the bronze age. The first people that found out how to weld were the Egyptians the Egyptians were smart enough to figure out how to weld. In the 19th century they figured out they could use acetylene for welding. A Englishman named Edmund Davy is the one that discovered acetylene in 1836. Then in 1880 Auguste De Meritens figured out how to fuse two lead plates together from the heat generated by an arc. Then in 1890 C.L Coffin discovered carbon arc welding which is one of the most common welding process used in today's world. Then in 1900 is were welding got introduced to a lot more advanced welding such as, seam welding, spot welding, flash butt welding, projection welding, and also electrodes were invented at the same time. A electrode is a piece of metal coated in lime to make the arc much more stable which results in better welding turn out. Then in 1919 CJ Holstag discovered alternating current. Then in 1920 P.O Nobel invented automatic welding which is a big thing in today's world. Then in 1930 New York Navy Yard developed stud welding which is used mainly for the construction industry. Then in the 1960s more welding techniques were developed such as, dualshield welding, innershield welding, and electroslag welding were
In doing so, they weld metal parts, fill holes, and can even repair cracks in a brace. Because of its heavy duty strength, welds can be used to repair cars, ships, and even airplanes. Also, welds are used in the construction of buildings and bridges. Various tools are needed to perform proper welding techniques, for example, a person may need clamps, welding rods, a chipping hammer, a torch, glasses, a welding helmet, an apron or non flammable clothing to properly weld metal. In addition, a person may also need a specific type of welder for a certain occasions.
The creation of oxy fuel welding and development of the first torch where two French engineers Edmond Fouche and Charles Picard became the first engineers to create the first stages of
Welding is a very important tool used in our daily lives. Welding is the process of joining two metal pieces together by applying heat. A filler helps to make the joint. Everything we use from trucks to houses have some type of welding in them. There are many types of welding careers to choose from. There is a great demand for welders today. My project was to build a table and candelabra out of metal. Most of the metal I gathered came from junk yards and had to be cleaned of rust.
Welding was invented in the 1900s but lets go back a little to middle age that was when blacksmithing was the best method to use before welding. Now Edmund Davy of England was the one who discovered acetylene in 1836. Some of the others inventors were Auguste De Meritens who worked on how heating of an arc can join two pieces of metal, C.L. Coffin was one one who created a welding process with an electrode. There was other people that helped make welding more efficient. As the years past by welding was getting...
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.
This lesson is designed to review and reinforce a few important concepts about plants (e.g. Needs, parts, sequence of planting) and to also guide the students through applying a few scientific inquiry (e.g. Making observations, experimentation, discussion, reflection, reporting results etc.). The students have previously planted corn and bean seeds and today’s lesson has provided the students a chance to see the results of the planted corn and bean seeds. Additionally, seeds have been planted under and growing under the following conditions: without water, and without soil. The students see the results of these seeds planted under these conditions for the past week. Two plants in particular have already been grown their growth has been
?Automation Reduces Weld Spatter? Welding Design & Fabrication (Jun. 2001): 37 EBSCOhost. Online. Nov. 2002 .