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What is Tig Welding and How to Tig Weld?

October 1, 2017

TIG welding is the most versatile kind of welding. TIG welding is precise and can be used for most types of metal: aluminum, stainless steels, carbon, magnesium, titanium, cobalt, nickle, copper alloys, niobium, as well as tungsten.

Here are the most commonly asked questions involving TIG welding.

What is tig welding?

TIG stands for Tungsten Inert Gas.

Technically it is called Gas Tungsten Arc Welding GTAW and also known as Heli-arc welding. Heli-arc welding historically, is a nod to the Hobart “Heli-Arc” machine from the 1930s developed to weld magnesium.

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What is tig welding used for?

Mechanically strong and visually appealing, TIG welding is becoming increasingly critical for industry and has attained a new popularity in recent years.

In the automotive and aerospace industries the process has helped reconfigure components making them lights thereby reducing fuel consumption and savings on ever-higher fuel costs.

It is a particularly effective and economic way for welding light gauge metals (under 3mm thickness) and for welding metals difficult to weld with the conventional welding process.

How does tig welding work?

In TIG, metals are fused together by heating them with an electric arc established between a non-consumable (does not melt) tungsten electrode and the workpiece. The molten metal, tungsten electrode and the welding zone are protected from the atmosphere (the air around it) by a stream of inert gas through the welding torch. The resulting welds have the same chemical integrity as the original base metal.

TIG welding is similar to oxy-acetylene welding in that you use a filler material for build-up or reinforcement.

Can you TIG weld aluminum?

The process is well suited for aluminum and is most frequently associated with the process. However the process can be used to weld almost all metals and metal alloys in use today.

Such metals include the following:

  • Aluminum and aluminum alloys
  • Magnesium and magnesium alloys
  • Low alloy steel and carbon steels
  • Copper and copper alloys
  • Nickel and nickel alloys
  • Joining carbon and alloy steels
  • Reactive materials (for example, titanium and tantalum)

Exotic alloys and aluminum are being used more than ever to build vehicles.

What kind of gas do you use with a tig welder?

Shielding gases are used to protect and cool the welding area from atmospheric gases, heat transfer, not to mention help start and maintain a stable arc.

Normally for TIG welding Aragon is used. Helium may also be added to increase penetration and fluidity of the weld pool.

What kind of gas do you use for tig welding steel?

An argon/ hydrogen mixture is the preferred gas for manual TIG welding for stainless steel (of austenitic grades). The hydrogen helps to collect oxygen close to the weld pool for a cleaner weld surface, and minimizes the need for a post weld clean.

Where is tig welding used?

Gas Tungsten Arch Welding or TIG has found applications in the:

  • Aerospace industry – aircraft
  • Sheet Metal Works
  • Metal Furniture
  • Most Notably Automotive Transport Industry
    • for any vehicles including cars, trucks, hot rods, choppers, professional racing teams, as well as auto hobbyists and enthusiasts

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Veriform’s TIG Welding Services

New 250 ton x 120 inch long CNC 5-axis press brake

July 25, 2017

VeriForm received its 6th brake press earlier this year, making VeriForm the largest bending shop in Ontario and possibly the Eastern USA.  With over $1 million in brake press tooling, VeriForm can form practically anything your engineers can design.

What is Metal Fabrication?

June 29, 2017

Fabrication Meaning

Metal fabrication is the process of constructing structures from raw materials by process like cutting, bending, and assembling. Metal fabricators (companies specializing in the process) are known as fab shops. Metal fabrication is a “value-added” process because additional value is added through various stages of production.

Machine shops and fabricators, are very similar with the expectation that fab shops concentrate on welding and forming of metals.

Metal Fabrication Process

Processes

Metal fabrication begins at the planning stage. Fab shops employ many different experts, including iron workers, welders,  boilermakers, blacksmiths, and professionals that convert raw materials into their final products. Since metal fabrication is the overarching process, it involves many different processes, including specialty techniques, which can involve:

  •  punching, welding, forging, casting, brazing, shearing, drawing and spinning
  •  as well as
  • Die cutting, hydroforming, finishing, shrinking, roll forming, spinning, stretching and stamping

Even higher levels of specialization include electrical and hydraulics services

Materials

Standard raw materials used include plate metal, fittings, castings, formed and expanded metal, sectional metal, flat metal, and welding wire.

Future of Metal Fabrication

Where is the future of the metal fabrication industry headed?

The key to success in a volatility market in this industry is keeping up with rapidly changing demands of customers while maintaining high output capability, with machinery that is becoming more sophisticated. Its is about learning to balance capacity with variability.

For metal fabrication shops this means

  • continually optimizing machinery and the manufacturing process
  • keeping an eye on the customer base and economic trends
  • innovating new ways to support customer demands and variability
  • increasing streamline practices
  • focusing ability in reliably to product out-capacity output

Veriform since the beginning has made modern investments, streamlining our manufacturing process from top to bottom, to meet the demands of our diverse customer base without cutting corners. All this while, trying to help preserve the environment. This has helped us cater to your needs at any given time.

Lets Talk about Your Metal Fabrication Needs

VeriForm Graduation Certificate Acceptance Speech

May 16, 2017

Veriform was recognized with a graduation certificate for its 10 year commitment to reducing energy consumption and becoming a Sustainable Waterloo Gold Pledging Partner. The company proudly attended the 8th Annual Evening of Recognition on Thursday, April 27th 2017 at Maxwell’s 35 University Avenue East to

Acceptance Photo of Veriform from Sustainable Waterloo as a Gold Pledge member for energy reduction Left to right: Tova Davidson (Executive Director of Sustainable Waterloo), Gerry Cutting (Energy Manager at VeriForm, Emily Aria Rak (daughter of Paul Rak VeriForm’s owner), and Matthew Day (RCI Program Manager) Emily Rak received the diploma on stage that evening on behalf of VeriForm, for graduating from the 10 year commitment for sustainability. Photo Courtesy of Sustainable Waterloo


Reducing the amount of CO2 emissions via electricity and natural gas usage has always been a priority for us however since the year 2015, 100% of CO2 emissions were completely eliminated. Going from 245 tons of carbon emissions to an amazing 64 tons. On top of that, VeriForm has been growing and building by 145% since 2007. And if that doesn’t impress you, VeriForm is the 4th company in Canada to achieve ISO 50001 certification for their energy management system, which results in a 5% reduction in energy use year after year.

Acceptance GraphCarbon Emissions Results Up Until 2016


See the acceptance speech below:

We are proud to say that it has been 12 years of CO2 awareness for the company and 2 years of being carbon neutral. These numbers highlight the true commitment and dedication of the VeriForm team with many more to come!

Increasing Productivity with Laser Cutter Machines

January 31, 2017

In 2017 modern laser cutters have innovative features, faster controls and powerful beams. Many industries are opting to outsource cutting for laser cutting services to other conventional alternatives.

Laser Cutting

Laser cutters work like printers, etching materials, using computer directed high-powered laser beams at precise focal lengths. The lasers will melt the metal while an assisting gas blasts the molten metal out of the cut.

Laser Cutter Features and Advantages

Recommended for projects involving intricate detailing and precise dimensions.

Programs are automated to change parts not to mention require relatively inexpensive replacement parts contributing to shorter set, and longer machine uptimes. Productivity is further improved with the following features:

  • Precise High-Quality Cutting
    • Most can achieve precision of +/- 0.005 inches or +/- 0.13 millimetres and controlled by computer programs
  • Edge Quality
    • Metal is cleanly cut without deformation or blurs
    • Cuts exceptionally fine contours and virtually radius-free inner edges
  • Complex Shapes
    • More human input can be dedicated to design rather than production
  • Cuts Smaller Diameter Holes
    • With complex detail and good edge quality
  • No Contact Cutting
    • Eliminates tool wear problem
    • Low noise, vibration and pollution
  • Less Maintenance 
  • Automation
    • Leading to time savings and allowing for smaller production runs to more competitive job costing

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