Came across a great informative article over at The Fabricator on different types of metal production.  Very detailed look into how the different ways of steel production can affect the quality of the steel itself, and how that in turn can affect the quality of the weld.  Porosity is a huge problem in welding, as any welder knows all too well.  This article gives you a lot of insight into how porosity can occur when the steel is originally cast.

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!

We came across a neat article on welding basics over at HotBikeWeb while reading up on some motorcycle repair information. It’s got a lot of great basic information as it relates to “virgin” welders and everything you’d need to know in order to get started welding:

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.

Master fabricators are always looking at ways to improve their weld quality…  This article has some great tips:

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!

One of the joys of working on the internet is that corrections can be made quickly.  You know what I’m talkin’ about:  typos, wrong part numbers, confusing images….

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.

As many TIG welders know, thoriated (red) tungsten has in the past, been a preferred tungsten electrode blend.  But that’s old skool thinking– there’s better options out there… more on that later.

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.

I don’t think I’ve ever laughed so hard at work before!  This guy has a gift – if not for welding, then definitely for writing!

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 ->

Excited for the new Iron Man 2 movie coming out this summer?  Well, while you’re waiting, why don’t you check out this new IronMan 230 All-in-One MIG Welder from Hobart Welders?  It has everything you could want in a MIG machine — we only wish it had a bit more in common with its namesake (flying while welding anyone??)

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 ->

What are you doing this Sunday?  Planning on going to church?

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

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.

History

Friction stir welding was invented by The Welding Institute (TWI) in December 1991. TWI filed successfully for patents in Europe, the U.S., Japan, and Australia. TWI then established TWI Group-Sponsored Project 5651,”Development of the New Friction Stir Technique for Welding Aluminum,” in 1992 to further study this technique.

The development project was conducted in three phases. Phase I proved FSW to be a realistic and practical welding technique, while at the same time addressing the welding of 6000 series aluminum alloys. Phase II successfully examined the welding of aerospace and ship aluminum alloys, 2000 and 5000 series, respectively. Process parameter tolerances, metallurgical characteristics, and mechanical properties for these materials were established. Phase III developed pertinent data for further industrialization of FSW.

Since its invention, the process has received world-wide attention, and today FSW is used in research and production in many sectors, including aerospace, automotive, railway, shipbuilding, electronic housings, coolers, heat exchangers, and nuclear waste containers.

“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 ->

Interested in learning about restoring classic cars? Well, you’ve come to the right place!

The folks over at Second Chance Garage have given us a step-by-step guide to choosing the right welder for the job:

Selecting the Right Welder for Classic Car Restoration Projects

What Welder To Use?

The most common welders used in auto restoration, therefore, are MIG (metal arc welders, gas or flux-cored), TIG (tungsten arc welders using shielding gas) and Arc Welders (the traditional “stick” electrode).

To choose the most appropriate one for your needs, you have to consider the following parameters:

* What is the maximum and minimum thickness of metal to be welded? Fortunately, automobiles use metals that fall into a relatively narrow range.

* What is the metal type? Again, automobiles generally are made of steel and, rarely, aluminum.

* What is the normal position the welding “head” will be put in? Do you need to do a lot of welding overhead? The answer is usually no here.

* How much current is available in your shop and do you have 220 volts? Check your circuits.

Let’s be frank. Our overwhelming favorite type of welder is the MIG. We’ll explain why shortly, but first we’ll give an overview of the other contenders. Here we go!

CONTINUE READING ONLINE ->

Once you’ve chosen a welder, come on over to Arc-Zone.com where you’ll find MIG guns, TIG Torches, Oxy-Fuel Torches, Plasma Arc Cutting Torches…  not to mention some really trick accessories like Trailing Shields, and everything you need to Weld Like a Pro!