Welding Fabrication - Frame Fabrication

This is one of two frames that an oil tank will sit on we built in the field. It took one full twelve hour day to fabricate the entire thing which is pretty good considering we had no engineering diagrams to work off of. All measurements were taken in the field and that took the most time. The Welding went pretty quickly with three guys.

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Welding The Frame Down

Now the fun of installing the frames we built begins!

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Laser Welding Steel Sheets

This video shows the laser welder being used in a semi-automatic mode to produce precise seam welds on steel sheets. See www.lightmark.com.au for more information about our laser welding services. Lightmark uses the latest laser welding technology from Alpha Laser

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CIS/2 - Robotic Welding

www.strucim.comStruCIM® is a powerful 3D simulation software that allows fabricators to quickly simulate and evaluate alternative methods for automating the fabrication of structural steel. StruCIM® provides on-the-fly, smart tool path generation for cutting, scribing and welding directly from the steel detailing CAD model. This minimises data preparation time, dramatically reduces robot programming efforts and empowers users to handle different assemblies very efficiently. StruCIM® automatically recognizes features such as copes, holes, welds and automatically generates tool paths for scribing, cutting, welding and drilling. StruCIM® recognises all sub materials associated to a member assembly and generates the tool path needed to mark their position and piece mark on the main member material.

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Tig Welding Certification - Differences in the Pipe Welding, Aerospace, and Aviation Industries

2 industries that require tig welding certification are:

Industrial piping, (including boiler tubes)
Aerospace and aviation (manufacture and overhaul/repair)

For tig welding certification in piping, pressure vessels, and boilers, ASME section IX of the "Boiler and Pressure Vessel Code" specifies the criteria for acceptable welding tests.

For Aerospace tig welding, the American Welding Society (AWS) D17.1 - "Specification for Fusion welding for Aerospace Applications" is the code for welding certification tests.

More often than not, a 6G position welding test is required to certify for Pipe welding jobs. On many boiler jobs, 2" heavy wall tubing is tig welded all the way out in the 6G position making the welder either switch hands, or at least get in some uncomfortable positions. That is why 6G position Tig welding tests are considered the most difficult.

Most of the time, sheet metal test pieces in the 0.020"-0.125" thickness range are used for aerospace welder qualification testing. The 6G welding test is only used occasionally because it does not accurately represent the scope of welding tasks performed for most aerospace and aviation welding applications. AWS D17.1 even has a provision for welders to certify on a scrap part or mock up of a weld that is not represented well by a plain groove or fillet weld.

ASME section IX Boiler and Pressure Vessel Code has been around for a very long time, but AWS D17.1 is relatively new and was written to replace 2 old Mil standards... 1595a and 2219.

One thing both welding certification specifications have in common is that the test welds that are selected to be used for certification tests only qualify the welder for a range of positions, thicknesses, and joint types. No single test qualifies for all the possible material, thickness, positions, and joint types that are possible. That is why some welders hold a dozen or more certifications.

One main difference in welding tests for these 2 industries is that the initial welding test for Pipe welding jobs are largely done using low carbon steel or stainless steel. Other materials like inconel are sometimes used also but not nearly as much as carbon steel and stainless.

In the Aerospace and aviation industries, It is not uncommon for a welder to be tested on carbon or low alloy steels, stainless steels, nickel alloys, aluminum, magnesium, titanium, cobalt alloys, and even some refractory alloys like Niobium...with separate welding tests required for each material category.

One of the main differences in Tig welding pipe and tig welding aircraft or aerospace parts is in the thickness of material. In Aircraft welding , most everything is thinner. and that means smaller electrodes, smaller filler wire, smaller torches...and in Aircraft and Aviation tig welding, a 1/16" rod is considered pretty big.

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Grays Harbor College Welding

A video walk through of the Grays Harbor College Welding Shop. Most of the fixtures such as tables and equipment racks have been student made. My teacher prides himself on making real knowledgable experienced welders and not just "test jockeys." He has had students fabricate several stations outside including 2G, and 6G pipe, square tube, and I-beam (wide flange beam) stands and there is a crane to fit up large pieces of iron to weld in the 5G position, and restricted access joints. There is also an elevated work station for students to prep a joint while on the ground and then it must fit to be bolted and welded in place while elevated. In this welding program you will learn to weld competently with SMAW, GTAW, GMAW, and FCAW processes on steel, aluminum, and stainless steel. Stop by and see for yourself because as far as i'm concerned it is the best welding program in the country.

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