About Welders
Welders are skilled individuals who use welding tools to join together two different materials. A variety of welding tools are available, each with its own benefit. Welding has been in existence for millennium and became fully industrialized in the 1900s. Like all tradesman, a welder must go through an apprenticeship before being qualified to be a full-fledged worker.
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Function
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A tradesman or skilled worker who is responsible for welding materials together is known as a welder. Generally welders join metals such as steel, aluminum or copper together or a variety of polymers and plastics, each utilizing different degrees of tools. Welders must maintain good dexterity and attention to detail as the job is relatively delicate. In addition, they must possess knowledge of the different materials with technical knowledge of how a joined material will maintain.
Features
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The main tool used in welding is called a welder. It is a device that emits a form of energy used to merge two materials together. The most common form of a welder is a gas flame. The flame heats to temperatures high enough melt the material being joined.
An electric arc is also commonplace in welding, which provides an electrical breakdown of gas producing a discharge of plasma. The current of the electric arc flows through the air, which is a nonconductive mass that allows for proper welding technique.
Other forms of welding have also been utilized over time, each for different purposes, including lasers which are used in automated procedures. -
History
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Welding has existed since the Bronze Age, however, it wasn't until the Middle Ages that controlled welding began to take shape. Forge welding became the principle standard during that time, allowing blacksmiths to force two heated materials together through pounding. This continued as the standard for centuries, creating the metal-working industry.
In the early 19th century, an inventor named Sir Humphrey Davy discovered the electric arc, revolutionizing the possibilities of welding by adding precision to the process.
The first gas welders began appearing in 1893, using different mediums to produce the best plasma discharge. This experimentation ultimately led to the invention of the blowtorch, a device that allowed for a wider application through non-industrial needs.
The world wars revolutionized the welding industry by creating the need for large scale welding facilities and a more voluminous work force.
Warning
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There are a variety of dangers associated with welding, some of which can be life threatening. Because the basic tool uses an electric arc or a flame, precautions must be taken against burns. Welders wear leather gloves and long sleeves to lessen the impact of heat. Another problem is the bright light that is given off by the welder. It can cause damage to the cornea and ultimately lead to blindness. Welders wear protective helmets or shaded goggles to prevent this possibility.
Another hazard in welding is the fumes and matter released from the materials being joined. Dangerous gases can enter the lungs, damaging the tissue. Many welders have begun using filters to aid in the removal of these from the air.
Considerations
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Like most tradesmen, a welder must move through a series of stages in their career path. Unlike in previous times, however, a welder's apprenticeship is usually carried out through an accredited trade school. These programs usually last for two years, and give the beginning welder strong knowledge of the process, tools, and materials used in welding. It also provides safety information that is imperative for a safe career. A welder can use the qualifications they've learned to work as a welder for a company or establish their own business, however the majority work for another welder for at least two years.
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