*WELDINg weld PieC ewelding, and insulated plastic housing with an IP23S rating ensures your safety...
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* WELDING 62 WWW.TRADEMAGS.COM.AU/BCM WWW.TRADEMAGS.COM.AU/BCM 63 VRD ensures voltage at the Stick before you start is just 8V, integrated Fail To Safe will shut the unit down if voltage exceeds 35V whilst not welding, and insulated plastic housing with an IP23S rating ensures your safety when working in confined spaces or outdoors. The 170i weighs in at a slight 11.5kg and the 130i is a shade over 7kg, so you can throw one of these over your shoulder or in the back of the ute and get straight on with the job. With Stick (MMAW) and Lift TIG (GTAW), Cigweld has designed the range to meet the demands of a wide range of industries – from farming to construction, general maintenance, building and on-site repair. Cigweld has also got a model specific to mining – these robust units offer extra protection without compromising on performance. So wherever you weld, whatever your industry, with a Transarc 130i or 170i from Cigweld, you know that you and your contractors can finish a quality job and head home safe at the end of the day. For more information, please go to www.cigweld.com.au GET ON WITH THE JOB Loaded with safety features, Transarc 130i and 170i amp single-phase inverters are efficient and easy to control. WELD PIECE Welding is the trade that’s been around the longest – although the modern method is a lot cleverer, easier and safer. The process of welding consists of bonding two pieces of metal, often with a filler material between them, through the application of heat and/ or pressure, to create a strong joint. Unlike the somewhat similar process of soldering, which also uses heat to join two materials with a third, the welding process changes the materials being joined. Soldering utilises less energy and only changes the bonding material. As a result, welding creates a much stronger bond. Welding has been with us, quite literally, for ages. The initial method, ‘forge welding’, utilising malleable metals because the heat produced was not enough to melt them. The process required a lot of pressure – in the form of hammering. Think: medieval blacksmiths beating red-hot metal into swords or armour. This method of welding is still practiced by some cultures – primarily, ones that do not have electricity at their disposal, since it was the advent of the electricity and greater technology during the industrial revolution that led to advances in welding. In 1802, Russian physicist Vasily Petrov discovered the ‘electric arc effect’ – a high-density electric discharge across a normally non-conductive medium (such as air) – and used an electric arc in some simple welding experiments. It wasn’t until the 1880s that the arc effect was applied specifically to industrial tasks, thanks to Nikolay Benardos’s invention of carbon electrodes. The process of arc welding was further developed later that decade with the invention of metal electrodes. However, one of the flaws was oxidation of the metals involved, which introduced impurities and made the weld porous, brittle and weak. This led to dangerous situations: boilers, for example, utilising welding in their manufacture, were prone to exploding when the pressure build-up was stronger than the welded join. This problem was overcome with the invention of a flux-covered electrode – the welding rod; flux provides a more stable arc, and shields the weld from oxidation and other impurities, ensuring the join holds. The basic requirements for welding are a welding rig, the material being welded and – very important – correct safety gear. Basic rigs are set up for shielded metal arc welding, also known as stick welding (the ‘stick’ is the welding rod). The act of arc welding requires the attachment of a grounding wire to the welding material or other metal surface; another wire is attached to the welding rod. An electric arc is created as the rod is pulled away from the welding surface, creating enough energy to melt the material being welded, along with the rod, which forms the filler material. Other forms of arc welding include gas metal arc welding, also called metal inert gas (MIG) welding, in which the gas provided prevents oxidisation of the weld; and gas tungsten arc welding, or tungsten inert gas (TIG) welding. Stick welding is cheapest and easiest to get a handle on, but is slower and less versatile than the others, which require more elaborate rigs and provide higher-quality welds. Torch welding is another popular method, utilising oxyacetylene gas – fed from acetylene and oxygen cylinders – burnt in the welding torch. French engineers Edmond Fouche and Charles Picard pioneered oxyacetylene welding in 1903. Irrespective of method, welding involves a number of safety concerns. Most obviously, the carbon arc produces temperatures of 3000 degrees Celcius; the oxyacetylene flame burns at 3500 degrees Celcius. Both radiate bright incandescent flares and sparks, thus necessitating the use of personal protective equipment: helmets, goggles, heavy leather gloves, aprons and long sleeve jackets to protect against and minimise exposure to heat and flame and the brightness of the welding flare. When oxyacetylene welding, maintaining correct gas pressure will ensure there is no flashback (in which flame burns down the hose, risking explosion). In all kinds of welding, a less obvious but just as serious aspect of health and safety is that of toxic fumes and gases. Gases such as carbon dioxide and ozone and fumes containing heavy metals are present in the welding process, so make sure your workplace or part of the building site where you’re welding is well ventilated. The lenses of goggles and masks are equipped with face plates consisting of dark UV-filtering lenses since the incandescent flare produces frequencies of light that will damage vision. In some instances, helmets and goggles, or helmets and masks, are combined in the same unit. In arc welding, in which the filler material and the electrode take the form of the single rod, the welder has a free hand to hold a mask whose design curves around the face. This is not an option with oxyacetylene welding, in which the filler rod is held in one hand, the torch, in the other. Note that some goggles that protect against oxyacetylene spark and flare may not be sufficient to protect against that of arc welding – so make sure you check. The most modern welding helmets, combining the mask and faceplate, have the best technology: clear lenses that cloud in the presence of the dangerous UV, infrared and infra blue light frequencies. The basic requirements for welding are a welding rig, the material being welded and – very important – correct safety gear. PROPLUS+ HELMETS • Complies to Australian Standards AS/NZS 1337.1 & AS/NZS 1338.1 • 4 Sensor Auto-Darkening Filter Lens • High Impact Rating • Low Amperage TIG Welding Rating • Digital Display and Controls • Reaction Time 1/25,000 sec • Magnification Lens Compatible • Replaceable Batteries • 2 Years Limited Warranty Blue 454350 Pro Racer 454353 Web 454351 1/30,000” Move between welding, cutting and grinding without distraction - the helmet reaction time is 1/25,000th of a second. The low amperage TIG rating of 2 amps and above supports even the most subtle welding applications, so you can control the arc while your helmet intelligently controls the visibility. Barbed Wire 454352
Transcript of *WELDINg weld PieC ewelding, and insulated plastic housing with an IP23S rating ensures your safety...
*WELDINg
62 WWW.TRADEMAgS.COM.Au/BCM WWW.TRADEMAgS.COM.Au/BCM 63
VRD ensures voltage at the Stick before you start is just 8V, integrated Fail To Safe will shut the unit down if voltage exceeds 35V whilst not welding, and insulated plastic housing with an IP23S rating ensures your safety when working in confined spaces or outdoors.
The 170i weighs in at a slight 11.5kg and the 130i is a shade over 7kg, so you can throw one of these over your shoulder or in the back of the ute and get straight on with the job.
With Stick (MMAW) and Lift TIG (GTAW), Cigweld has designed the range to meet the demands of a wide range of industries – from farming to construction, general maintenance, building and on-site repair.
Cigweld has also got a model specific to mining – these robust units offer extra protection without compromising on performance.
So wherever you weld, whatever your industry, with a Transarc 130i or 170i from Cigweld, you know that you and your contractors can finish a quality job and head home safe at the end of the day.
For more information, please go to www.cigweld.com.au
geT oN wiTH THe joBLoaded with safety features, Transarc 130i
and 170i amp single-phase inverters are efficient and easy to control.
weld PieCeWelding is the trade that’s been around the longest –
although the modern method is a lot cleverer, easier and safer. The process of welding consists of bonding two pieces of metal, often with a filler material between them, through the application of heat and/or pressure, to create a strong joint. Unlike the somewhat similar process of soldering, which also uses heat to join two materials with a third, the welding process changes the materials being joined. Soldering utilises less energy and only changes the bonding material. As a result, welding creates a much stronger bond.
Welding has been with us, quite literally, for ages. The initial method, ‘forge welding’, utilising malleable metals because the heat produced was not enough to melt them. The process required a lot of pressure – in the form of hammering. Think: medieval blacksmiths beating red-hot metal into swords or armour. This method of welding is still practiced by some cultures – primarily, ones that do not have electricity at their disposal, since it was the advent of the electricity and greater technology during the industrial revolution that led to advances in welding.
In 1802, Russian physicist Vasily Petrov discovered the ‘electric arc effect’ – a high-density electric discharge across a normally non-conductive medium (such as air) – and used an electric arc in some simple welding experiments. It wasn’t until the 1880s that the arc effect was applied specifically to industrial tasks, thanks to Nikolay Benardos’s invention of carbon electrodes.
The process of arc welding was further developed later that decade with the invention of metal electrodes. However, one of the flaws was oxidation of the metals involved, which introduced impurities and made the weld porous, brittle and weak. This led to dangerous situations: boilers, for example, utilising welding in their manufacture, were prone to exploding when the pressure build-up was stronger than the welded join. This problem was overcome with the invention of a flux-covered electrode
– the welding rod; flux provides a more stable arc, and shields the weld from oxidation and other impurities, ensuring the join holds.
The basic requirements for welding are a welding rig, the material being welded and – very important – correct safety gear. Basic rigs are set up for shielded metal arc welding, also known as stick welding (the ‘stick’ is the welding rod). The act of arc welding requires the attachment of a grounding wire to the welding material or other metal surface; another wire is attached to the welding rod. An electric arc is created as the rod is pulled away from the welding surface, creating enough energy to melt the material being welded, along with the rod, which forms the filler material.
Other forms of arc welding include gas metal arc welding, also called metal inert gas (MIG) welding, in which the gas provided prevents oxidisation of the weld; and gas tungsten arc welding, or tungsten inert gas (TIG) welding. Stick welding is cheapest and easiest to get a handle on, but is slower and less versatile than the others, which require more elaborate rigs and provide higher-quality welds. Torch welding is another popular method, utilising oxyacetylene gas – fed from acetylene and oxygen cylinders – burnt in the welding torch. French engineers Edmond Fouche and Charles Picard pioneered oxyacetylene welding in 1903.
Irrespective of method, welding involves a number of safety concerns. Most obviously, the carbon arc produces temperatures of 3000 degrees Celcius; the oxyacetylene flame burns at 3500 degrees Celcius. Both radiate bright incandescent flares and sparks, thus necessitating the use of personal
protective equipment: helmets, goggles, heavy leather gloves, aprons and long sleeve jackets to protect against and minimise exposure to heat and flame and the brightness of the welding flare.
When oxyacetylene welding, maintaining correct gas pressure will ensure there is no flashback (in which flame burns down the hose, risking explosion). In all kinds of welding, a less obvious but just as serious aspect of health and safety is that of toxic fumes and gases. Gases such as carbon dioxide and ozone and fumes containing heavy metals are present in the welding process, so make sure your workplace or part of the building site where you’re welding is well ventilated.
The lenses of goggles and masks are
equipped with face plates consisting of dark UV-filtering lenses since the incandescent flare produces frequencies of light that will damage vision. In some instances, helmets and goggles, or helmets and masks, are combined in the same unit. In arc welding, in which the filler material and the electrode take the form of the single rod, the welder has a free hand to hold a mask whose design curves around the face. This is not an option with oxyacetylene welding, in which the filler rod is held in one hand, the torch, in the other.
Note that some goggles that protect against oxyacetylene spark and flare may not be sufficient to protect against that of arc welding – so make sure you check. The most modern welding helmets, combining the mask and faceplate, have the best technology: clear lenses that cloud in the presence of the dangerous UV, infrared and infra blue light frequencies.
the basic requirements for welding are a welding rig, the material being welded and
– very important – correct safety gear.
PROPLUS+ HELMETS• CompliestoAustralianStandards AS/NZS1337.1&AS/NZS1338.1
• 4SensorAuto-DarkeningFilterLens
• HighImpactRating
• LowAmperageTIGWeldingRating
• DigitalDisplayandControls
• ReactionTime1/25,000sec
• MagnificationLensCompatible
• ReplaceableBatteries
• 2YearsLimitedWarranty
Blue454350
Pro Racer454353
Web454351
1/30,000”
Move between welding, cutting and grinding without distraction - the helmet reaction time is 1/25,000th of a second. The low amperage TIG rating of 2 amps and above supports even the most subtle welding applications, so you can control the arc while your helmet intelligently controls the visibility.
Barbed Wire
454352
