1. Know Your Welding Machine

To properly hook up your TIG torch to your welding machine, the first thing you need to know is what kind of connection your machine supports.  With older power supplies the TIG torch bolts onto the machine via a threaded stud terminal on the front panel of the power supply.  Newer welding machines make use of an international style Dinse connector which is a twist-locking quick disconnect system.  There are two sizes of Dinse connectors:  small, which the pin size is 3/8″ (9.5mm) in diameter, or the more common large Dinse connector with a pin size of 1/2″ (12.7mm) in diameter.  Some machines allow for a Gas Through Dinse connection, whereby your torch’s shield gas supply flows through the Dinse connector, eliminating the need for an additional gas connection.  The gas flows from your tank and flowmeter/regulator through the machine to the connector and into the torch.  Some power supplies use a Tweco type (also called American style) split pin connector that also twists and locks into place.

The newest twist on machine connections is happening with the increasing prevalence of import machines using a quick-disconnect for gas and water connections.  And some cases, the female receptacle on the Dinse plug may be slightly shorter than the industry standard, and you may need to trim off a portion of the male pin on the Dinse connector.

Consult your welding machine manual to know which connector type you have.  Or, if you no longer have your manual, contact the manufacturer directly and have ready your machine’s model and serial number.

2. Know Your TIG Torch

Different TIG torches have different TIG torch adapter connections at the machine end.  A water cooled TIG torch has a 7/8” x 14 left-hand threaded male fitting on the end of the power/water return line.  Generally an air-cooled TIG torch rated 200 amps or above has a 7/8” x 14 right-hand threaded male fitting and an air-cooled torch rated 150 amps or below has a 3/8” x 24 right-hand threaded male fitting on the end.  Some specialty torches like the CK TrimLine series use a “B” size 5/8” x 18 right-hand thread. While these fittings may look like parts you can buy at your local hardware store, they are unique to the welding industry and available through welding suppliers only.

3. Standardize Your Connections

Upgrade your machine(s) to accept a Dinse style connector to make switching from one torch to another easy.  For a large corporation, this means you can standardize your connections and run different applications at different times, or accommodate different shifts, removing and storing torches to protect them from theft or damage.  Even a small fabrication shop will want to be able to use different torches on the same welding machine.  With the Dinse connectors you don’t need tools to change your torch, and all your torches will connect the same way.  Also, the connection is insulated with a rubber or plastic boot.

If you have an older style welding machine with the threaded stud, you can buy a stud-to-Dinse female converter to upgrade your machine’s stud connection.  A machine with a Tweco style connection can also be converted to accept a Dinse style plug with an adapter that mounts onto the machine as well.

4. Use Quick Release Gas And Water Hose Couplers

Standard gas and water hoses require the use of a wrench to tighten the mechanical connection.  If you’re in the field or in the shop and need to change torches frequently, this can be cumbersome.  Like the Dinse connectors, quick-release hose couplers are available and allow you to change torches without tools.  These quick-release couplers thread onto the male fitting at the end of your gas and water hoses then mate to a corresponding female adapter that is mounted on your water cooler or gas connection.  They are similar to air line quick release couplers, and connect by twisting and locking into place.

Heavy-duty gas hose couplers are also available for just a couple dollars more and are a better choice for welding in the field.

If you’re not sure what type of adapter you need, give Arc-Zone.com a call toll free, 800-944-2243 (US) or 1-760-931-1500 (worldwide).  We have welding experts on staff that can help you find what you’re looking for!

By Carl Smith

Metal production processes introduce flaws (dimensional and integral discontinuities) and cleaning requirements that affect welding.

Most metals actually are mined as minerals—metal combined with another element. Commonly used metals—not the exotic metals—are combined with nitrogen, oxygen, or sulfur. Those combined with oxygen are called oxides. Metals combined with sulfur are called sulfides, and those containing nitrogen are called nitrides. (Some stainless steels are treated with nitrogen to harden the surface.)

CONTINUE READING AT THE FABRICATOR –>

And don’t worry, Arc-Zone.com stands by every product we sell.  We’ve got your every Welding Accessory covered, from TIG Torches to TIG Rod, to all sorts of welding apparel, helmets and more.  We’ll get you dialed in, and ready to weld!

By Bob Colvin

A few years ago on 60 Minutes Jesse James said, “There are two kinds of people in the world, those that can weld and those that can’t.” You see it every week on cable TV, a fabricator shapes a piece of metal or a couple pieces of metal and then pulls out a MIG or TIG welder, tacks the parts together, and then runs a bead fusing the two pieces together permanently-well hopefully. When they’re done it’s another perfect part. They make it look easy and after welding bits and pieces of metal together a masterpiece emerges. Can the home hobbyist/enthusiast do the same level of fabrication? Possibly, with the right tools and training almost anyone can create or repair anything. But where do you start? There is a lot to learn, but it’s not as daunting as you may think. It does take time and effort though.

CONTINUE READING OVER AT HOTBIKEWEB–>

If you’re looking to get into welding but don’t know where to start or what you need, head over to Arc-Zone.com.  We’ll get you equipped with one of our TIG Pro Kits, or one of our TIG Torch Packages.  And if you’re ready to start some welding education classes, Arc-Zone offers a special 10% educational discount to welding students.

22 possible causes of weld metal porosity
Take a look at gas flow, material conditions, and consumables to prevent this defect
By Phil Evans, Contributing Writer, The Fabricator

Porosity is a weld defect that is fairly common, but also fairly easy to fix. What issues contribute to weld porosity? This checklist gives a welder a good idea of what might be causing the problem.

Weld metal porosity is not a welcome sight in a weld bead, but it shows up all too often. Porosity is weld metal contamination in the form of a trapped gas. Shielding gases or gases released as a result of the torch being applied to treated metal are absorbed into the molten metal and released as solidification takes place. In other instances, the shielding gas doesn’t completely reach the weld pool and the atmospheric air adversely affects the weld bead. CONTINUE READING OVER AT THE FABRICATOR–>

These tips are nothing new, but its always a good reminder (or a great checklist if you’re a noob!) You’ll notice that many of these welding tips have to do with shield gas, especially the delivery of it (are you outta gas??  is your torch properly maintained?  did you check your O-Rings lately?) and quality of materials.

Our own Joe Welder offers these instructions for taking care of your TIG  / GTAW torch:

And at Arc-Zone.com can set you up with all the equipment you need to ensure your welds are top quality!

Print, however, is different.  An operations manual, for example, printed hundreds of thousands of times over– with an error–  could potentially cause confusion, and none of us are immune– not even the most respected manufacturers.

We recently ran across just such a case, when a manufacturing engineer contacted us via this very blog, in response to an article we’d posted about the installation of the ceramic electrode insulator/gas distributor on the Thermal Dynamics 3A Plasma Arc Welding Torch.

Allen wrote:

The article about Plasma Arc Welding Tips from June 2007 shows a particular way to install the insulator sleeves part # 9-2240 for a Thermal PAW 3A torch. This is opposite to what my Thermal factory manual says. The manual says the collar goes towards the tip and your article says the collar goes to the torch cap. I’m confused now.

I emailed a response that included a direct link to the manufacturer’s data sheet on the 3A PAW torch which correctly shows the direction of the installation of the part.

Imagine my surprise when Allen wrote back to tell me he had called the manufacturer himself and a service tech confirmed that the manual was incorrect!

Now I’m not saying we’re always right, but I am saying it is always a good idea to double check, and ask questions.  When you’re talking about Plasma Arc Welding, there are so many variables, and the last thing you want is for you an incorrectly installed part to cause a $500 torch failure.

At Arc-Zone.com we carry a complete line of performance proven no-OEM plasma arc welding torches and replacement parts for the Thermal Dynamics(R) torches, manufactured to exacting specifications to meet your production needs.

So give us call if you’re in need of plasma arc welding torch replacement parts, accessory kits, and be sure to ask about our blanket purchase order program.  We’ll make sure you not only have your parts installed correctly, we’ll make sure you have the parts you need when you need them.

If you’re like me, you enjoy learning about all kinds of things especially as it relates to welding and metal fabrication.  I recently stumbled across this column over at Salon.com, Blogging the Periodic Table.  It’s a fascinating look at each of the elements in the periodic table–  and each one has a story.  You can read all about Thorium. Though this column doesn’t include information on welding, there some interesting and fun facts sprinkled throughout.

Now if you’ve been TIG welding for a while, you’re all too familiar with the RED tungsten electrodes.  This thoriated blend of tungsten electrode is popular because it is a good general purpose electrode (good for all metals and all machines) has excellent arc behavior and lasts long….  because of the nature of thorium, however, there are some health concerns due to vapors and grinding dust. At Arc-Zone we recommend you only use it if you are contractually required to, especially as there are better alternatives out there.

For more detailed information on health and safety concerns regarding the use of thoriated tungsten electrodes, check out the AWS Safety and Health Fact Sheet: Thoriated Tungsten Electrodes.

We almost always recommend our ArcTime Hybrid Tungsten… it is truly a state-of-the-art improvement over the old thoriated electrodes with excellent ignition properties, low burn off rate and it lasts a long time! I’ll let our spokes model tell you more about it:

To explore other options, check out Arc-Zone.com’s Guide to Selecting Tungsten Electrodes.

Attempting to weld in the age of duct tape

Al Batt, Tales from Exit 22
Published Wednesday, March 10, 2010

I don’t like to wear socks.

I wear them but I don’t like it.

I consider socks to be a fire hazard.

I took a welding class at a college that once thrived in Waseca.

It wasn’t my idea. It was my employer’s idea. He felt that the duct tape I used wasn’t as strong as a weld. He was annoyingly conscientious. Welding started during the Bronze Age, and it survives into the Duct Tape Age. I went to college during the day and worked nights. The welding class gave me something to fill those hours that I had been wasting on sleep.

My father had taught me how to weld with a derelict welder he had rescued from a junkyard. It was a serious stapler that performed basic farm welding with little attention paid to aesthetics.

On the farm, I welded broken wagon tongues and tractor hitches. I gave up welding once I quit breaking wagon tongues and tractor hitches.

I would have been happy not knowing anything more about welding. Welding isn’t even an Olympic event. It could be in the Winter Olympics. Replacing the brooms with welders would make curling a little more exciting.

CONTINUE READING ONLINE ->

Hobart Introduces IronMan 230 All-in-One MIG Welder with Superior Arc Quality and Greater Precision
Jon Crowley | Jan 14, 2010

Hobart Ironman 230

The IronMan™ 230 is a total redesign of the full-size MIG platform, outperforming the competition on arc quality, voltage control, duty cycle and value. It delivers 30-250 amps of pure power in a heavy duty cabinet. The arc of the new IronMan™ 230 is optimized to deliver a flawless weld, making spatter and post-weld cleanup almost non-existent. The IronMan™ 230 easily runs aluminum – just add the optional Hobart DP-3545-20 spool gun and you’re ready to weld aluminum from 18 gauge to 1/2″.

For improved feedability with aluminum wires or for extended reach with other wires add the Hobart 3545-20 spool gun with its 20 ft. cable length.

CONTINUE READING ONLINE ->

How about Metal Church, with your favorite preacher, Jesse James?!?

“If you can’t stand the heat, get out of the kitchen.”

This expression makes absolutely no sense if you’re in the profession of welding.

#1:  If you can’t stand the heat, why the heck are you a welder?

#2:  There is no kitchen.  What kitchen?  If you’re welding in a kitchen, get out of that kitchen. Right now! There are gas mains!

#3:  If you can stand the heat, and you’re not in a kitchen, then why would you move?  Stand right there!

In fact, let’s add some more heat.  Let’s add some… friction.

That’s right, you heard me. Friction, as in friction stir welding. FSW. It’s all the rage in… in…

Just read.

An introduction to friction stir welding

By Jeff Defalco, Contributing Writer
September 15, 2009

A relatively new joining process, friction stir welding (FSW) produces no fumes; uses no filler material; and can join aluminum alloys, copper, magnesium, zinc, steels, and titanium. FSW sometimes produces a weld that is stronger than the base material.

Friction stir welding (FSW) is a relatively new joining process that has been used for high production since 1996. Because melting does not occur and joining takes place below the melting temperature of the material, a high-quality weld is created. This characteristic greatly reduces the ill effects of high heat input, including distortion, and eliminates solidification defects.

Friction stir welding also is highly efficient, produces no fumes, and uses no filler material, which make this process environmentally friendly.

CONTINUE READING ONLINE ->