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Need a New Career? How to Become a Welder

Anyone looking for a blue-collar career using their hands might be interested in learning more about welding. Many apprenticeship programs will accept candidates who have completed tenth grade or higher at the high school level, although a high school diploma or GED is preferred




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Welding as a Profession
In today's society welding is one of the most sought after trades. Most companies and factories are looking to hire people who have had some form of training with regards to welding. Welding was not always this popular. At one time it was seen as a lower class profession and people, who were employed as welders, were not paid a high wage for the work that they do. However, today in society we see a different trend. The welding profession is considered a good trade and most welders are paid a good wage for the work that they do. Like any other profession there are variations in the amount of money that welders are being paid but this all depends on where you work and why type of welding work you do.
The area of welding itself dates back as far as 1885 when two people by the names of Nikolai Benardos and Stanislav Olszewski invented the first electric arc welder. They were granted the patent for their invention a few years later. This welder was called an electric arc welder that had a carbon electrode called an Electrogefest. These two are men are considered to be the founders and creators of the modern welder that we see being used today as all models of welders came from the first that was created.
There are some people that are completely sure what welding actually is. There are a variety of definitions of welding but the most commonly used definition states that welding is a technique that is used to join metallic parts usually through the application of heat. So in a sense it is the art of burning to metals together in some way. Welding was first discovered during efforts to manipulate iron into useful shapes.

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James Hunt has spent 15 years as a professional writer and researcher covering stories that cover a whole spectrum of interest. Read more at www.1st-in-welding.info

Recycling Of Acrylic by Savey Bakarne-5496
Parts of acrylic can be fastened by chemical bonding, ultrasonic welding, and heat staking. Types of agents which are commonly used to chemically bond acrylic are solvents and polymerizable adhesives. Solvents like dichloromethane dissolve the surfaces of two acrylic parts, which harden after the solvent evaporates and bond to one another. Similarly solutions of acrylic polymer dissolved in a solvent or methyl methacrylate monomer work. Polymerizable adhesives which are two part contain a viscous acrylic resin base and a liquid catalyst that when mixed together provide a strong joint. Second type of bonding is through ultrasonic welding. It is an efficient method of fusing two parts made from the same material. Contact welding and transmission welding can be used for joining acrylic parts.
But, materials with different melting points are not good candidates for ultrasonic welding, since even a few degrees difference can result in one material melting before the other reaches its melting point, preventing a fusion between the parts. Fastening if done mechanically concentrates loads at fastening points and is not recommended for acrylic parts, as the act of drilling holes or torturing fasteners can introduce potentially damaging stress. Coring of holes is better rather than drilling them out. If wrong grade of acrylic is selected then it can lead to unsatisfactory results. In the recent days a manufacturer of a blood clot analyzer experienced early production problems with several complex parts molded from a general-purpose grade of acrylic. Initially chosen formulation led to parts developed stress cracks upon ejection from the tools, primarily because of complicated geometries that included sharp corners, edges, and points. Streaking also occurred. It was observed that additional toughness and impact strength were required, in a high-flow grade that would fill the molds. Gamma resistant acrylic was supplied in injection-grade pellets which solved some tricky molding problems. Tensile strength if high and impact resistance were critical as the parts are used in the assembly of a cassette intended to contain blood.
The containers must be resilient enough to resist cracking if accidentally dropped. Another consideration is dimensional precision. Next requirement was ultra violet transmission ability, which was necessary for curing the adhesive used in the cassette assembly. When molded from the impact-modified grade, the cassette parts have proven to be sufficiently durable, both during fabrication and in use. Acrylic material provides the requisite impact strength as well as a high degree of optical clarity and scratch resistance, and presents a pleasing, glossy surface finish. Disposal and recycling of acrylic has also to be considered. Burning of acrylic is extremely clean and provides virtually smokeless combustion with end products of carbon dioxide and water. Also the material offers superior recycle ability that is acrylic can be reground and reused, which results in less material waste during molding.
Savey Bakarne is a professional retail display specialist and teaches store owners how to gain profits from utilizing the proper Custom Retail Store Displays.
Article Source: http://www.upublish.info


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Guide to Welding

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Become a Welder

Welding Safety

Arc Welding

Iron Arbors

Laser Machine

Welding Rod Gases

Trained welders

Welding Systems

Welding Basics

Welding Symbols

Tig Welding

Working Principle

Handy Skill

Welding of Plastics



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