A welder (also weldor, which term distinguishes the tradesman from the equipment used to make welds) is a tradesman who specialises in welding materials together. This article is about the skilled manual worker meaning of the term for other uses see Tradesperson (disambiguation A tradesman is a skilled manual worker This article is about the skilled manual worker meaning of the term for other uses see Tradesperson (disambiguation A tradesman is a skilled manual worker Welding is a fabrication process that joins materials usually Metals or Thermoplastics by causing coalescence. The materials to be joined can be metals (such as steel, aluminum, brass, stainless steel etc. The M acro E xpansion T emplate A ttribute L anguage complements TAL, providing macros which allow the reuse of code across Steel is an Alloy consisting mostly of Iron, with a Carbon content between 0 WikipediaNaming Brass is any Alloy of Copper and Zinc; the proportions of zinc and copper can be varied to create a range of brasses with varying properties In Metallurgy, stainless steel is defined as a Steel Alloy with a minimum of 11 ) or varieties of plastic or polymer. Plastic is the general common term for a wide range of synthetic or semisynthetic organic solid materials suitable for the manufacture of industrial products A polymer is a large Molecule ( Macromolecule) composed of repeating Structural units typically connected by Covalent Chemical bonds Welders typically have to have good dexterity and attention to detail, as well as some technical knowledge about the materials being joined and best practices in the field. Fine motor skills can be defined as coordination of small Muscle movements which occur e [1][2]
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Safety issues
Welding, without the proper precautions appropriate for the process, can be a dangerous and unhealthy practice. However, with the use of new technology and proper protection, the risks of injury and death associated with welding can be greatly reduced. Because many common welding procedures involve an open electric arc or flame, the risk of burns is significant. To prevent them, welders wear personal protective equipment in the form of heavy leather gloves and protective long sleeve jackets to avoid exposure to extreme heat and flames. Personal protective equipment (PPE refers to protective Clothing, Helmets, Goggles, or other garment designed to protect the wearer's body or Leather is a material created through the Tanning of hides and Skins of Animals primarily Cattlehide The Tanning process A glove ( Middle English from Old English glof) is a type of Garment (and more specifically a Fashion Additionally, the brightness of the weld area leads to a condition called arc eye in which ultraviolet light causes the inflammation of the cornea and can burn the retinas of the eyes. Arc eye, also known as welder's flash, bake eyes, corneal flash burns, or flash burns, is a painful ocular condition sometimes experienced by Ultraviolet ( UV) light is Electromagnetic radiation with a Wavelength shorter than that of Visible light, but longer than X-rays The cornea is the transparent front part of the Eye that covers the iris, Pupil, and Anterior chamber. The vertebrate retina is a light sensitive part inside the inner layer of the Eye. Goggles and welding helmets with dark face plates are worn to prevent this exposure, and in recent years, new helmet models have been produced that feature a face plate that self-darkens upon exposure to high amounts of UV light. Goggles or safety glasses are forms of protective eyewear that usually enclose or protect the eye area in order to prevent particulates water or chemicals from Welding helmets are headgear used when performing certain types of Welding to protect the eyes face and neck from flash burn Ultraviolet light, sparks and heat To protect bystanders, transparent welding curtains often surround the welding area. These curtains, made of a polyvinyl chloride plastic film, shield nearby workers from exposure to the UV light from the electric arc, but should not be used to replace the filter glass used in helmets. An optical filter is a device which selectively transmits light having certain properties (often a particular range of Wavelengths that is range of Colours [3][4]
Welders are also often exposed to dangerous gases and particulate matter. Particulates, alternatively referred to as particulate matter (PM or fine particles, are tiny particles of solid or liquid suspended in a gas Processes like flux-cored arc welding and shielded metal arc welding produce smoke containing particles of various types of oxides, which in some cases can lead to medical conditions like metal fume fever. Smoke is the collection of airborne solid and liquid Particulates and Gases ref> ''Smoke Production and Properties'' - SFPE Handbook of Fire Protection Engineering An oxide is a Chemical compound containing at least one Oxygen atom as well as at least one other element Metal fume fever is illness caused primarily by exposure to certain metal fumes The size of the particles in question tends to influence the toxicity of the fumes, with smaller particles presenting a greater danger. Toxicity is the degree to which a substance is able to damage an exposed organism Additionally, many processes produce fumes and various gases, most commonly carbon dioxide and ozone, that can prove dangerous if ventilation is inadequate. Carbon dioxide ( Chemical formula:) is a Chemical compound composed of two Oxygen Atoms covalently bonded to a single OZONE is an object oriented Operating system written in the C programming language. Furthermore, because the use of compressed gases and flames in many welding processes pose an explosion and fire risk, some common precautions include limiting the amount of oxygen in the air and keeping combustible materials away from the workplace. Oxygen (from the Greek roots ὀξύς (oxys (acid literally "sharp" from the taste of acids and -γενής (-genēs (producer literally begetteris the [3]
External links
References
- ^ Lincoln Electric (1994). Lincoln Electric ( is a company in Cleveland, Ohio, United States that manufactures Arc welding equipment The Procedure Handbook of Arc Welding. Cleveland: Lincoln Electric. Cleveland is a City in the US state of Ohio and the County seat of Cuyahoga County, the most populous county in the state ISBN 99949-25-82-2.
- ^ Weman, Klas (2003). Welding processes handbook. New York: CRC Press LLC. ISBN 0-8493-1773-8.
- ^ a b Cary, Howard B. and Scott C. Helzer (2005). Modern Welding Technology. Upper Saddle River, New Jersey: Pearson Education. New Jersey ( is a state in the Mid-Atlantic and Northeastern regions of the United States. ISBN 0-13-113029-3.
- ^ Blunt, Jane and Nigel C. Balchin (2002). Health and Safety in Welding and Allied Processes. Cambridge: Woodhead. The city of Cambridge (ˈkeɪmbrɪdʒ is a university town and the administrative centre of the county of Cambridgeshire, England ISBN 1-85573-538-5.
www. millerwelds. com
Further reading
- ASM International (2003). Trends in Welding Research. Materials Park, Ohio: ASM International. Ohio ( is a Midwestern state of the United States. As part of the Great Lakes region, Ohio has long been a cultural and geographical crossroads ISBN 0-87170-780-2
- Hicks, John (1999). Welded Joint Design. New York: Industrial Press. The City of New York ISBN 0-8311-3130-6.
- Kalpakjian, Serope and Steven R. Schmid (2001). Manufacturing Engineering and Technology. Prentice Hall. ISBN 0-201-36131-0.
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