Valuable New Technologies – Arc Vision

December 19, 2014

How can you turbocharge your weld quality in mechanized welding? By viewing the weld, greatly magnified, with far greater clarity than possible with a welding shield, remotely from any location. How does this technology work, and why is it so much better? Cameron Serles’ blog post does a good job of explaining the basics of the breakthrough Xiris camera systems: http://blog.xiris.com/blog/bid/392061/How-to-Get-the-Best-View-of-an-Open-Arc-Weld

But beyond that, what about the hands-on opinion of an objective welding engineer?  This is a first-ever hands-on review in Visionary Welding, and it’s a story worth telling.  I was able to set up and demo a Xiris dual-camera setup in recent months with the help of the talented Cornelius Sawatzky, and coordinating aid from Machine and Welding Supply Company (Raleigh, NC branch, Mark Jeffries and Brent Ellis).  I saw fantastic benefits for long multipass mechanized welds. 

Operators control view during welding

Here’s how I would cram the WOW into one paragraph:  The screen perspectives are astonishingly good – so good that it makes you want to put a Xiris camera on your head and a smartphone screen in your helmet for doing manual welding.  It’s like what you see on a dark cloudy night, vs. wearing night-vision goggles.  It’s like the difference between what you can see, and what Superman can see – courtesy of logarithmic light intensity processing that lets you see the puddle, the arc, and the surrounding material all at the same time.  You can toggle between auto-recording (when the arc is active), or manual recording modes.  The ability to capture everything during a weld means that welder operator training can move ahead by a light-year, just by reviewing and using video segments to show ideal techniques, weld defects as they occur, and methods of error recovery which may avoid weld repairs.

In reviewing the welding videos that we made during a couple of days of production, several things stood out:

  1. The balanced location of the molten weld puddle has to be constantly monitored and frequently adjusted. The location needs to be adjusted not only to edges, but also to placement on the plane of the layer in planning for the width and sequence of beads that will effectively fill each required layer (and provide for post-weld machining to finish dimensions).  Doing this relies on proximity line-of-sight, which is normally limited, restricted, and distant: generally poor. Everything seen through a welding helmet lens under these conditions is difficult to interpret and even harder to teach.
  2. Producing a perfect weld takes not only great interpretive visual skills but constant, non-distracted attention.  Both of those were “bionically” enhanced while welding with the camera system.
  3. In historic mechanized welding, both the interpretive visual skills and this issue of non-distracted attention are not simply limited by the welder’s motivation: they are chained and blindfolded by the use of inadequately archaic manual technology. For example, the welder historically needs to peer through a welding hood and see the weld area clearly from more than one angle to properly interpret what is happening in the weld and in the joint. But, he cannot see everything clearly with only one lens shade, he can only get a second viewing angle by leaving the controls, and his eye is always at least three feet from the arc. So the welder functions in a world where everything is a compromise and he is limited to guesswork which is based on poor visual access, and a distant, squinting perspective.
  4. Many things can be done with a standard single-camera Xiris system.  But through placement of two cameras, you can gain a view of both sides of the weld – giving the welder an instant and continuous advantage which they never had before.  With a tap of your finger or glove, you can switch between three arrangements of the two views to maximize the advantages for the needs of the moment.
  5. “Supersize” the magnification advantage for the operator, or broadcast it to a wider, distant shop-floor audience by plugging in a big external flatscreen.  (Could be a high value deal-closer for customer visits or Open House events?)
  6. The Xiris software provides the important ability to automatically adjust or manually “tweak” the image characteristics for maximum clarity advantages.  After all, there are great differences between welding processes, weld parameters, materials, and joint configurations.  But frankly, the results of activating the auto-adjust were hard to beat and as fast as a digital camera in Auto mode, making it obvious that Xiris has invested a lot of brainpower to make it easy to get optimal viewing results of the weld puddle and the entire welding area – at the same time.  Finally, the focal point of the camera has everything to do with how clearly you can see what you want to see.  But since these cameras have built-in focal-length motors and easy screen-tap changes of focal point, it’s fast to make on-the-fly adjustments to focal-length.

Considering these issues, it becomes more clear why Xiris’ dual cameras with logarithmic light intensity processing of magnified images is a gigantic enabler for weld quality perfection. Not only can the operator see the weld and surrounding areas perhaps 5 times better than even closeup through a welding shield, and not only is it magnified much larger, but he never needs to stand/squat/peer/duck/walk-around while leaving the controls to glimpse a different view. Because he is at the controls when he sees the first hint of a problem, and because he can interpretively identify it much sooner, he is able to adjust to avoid the problem – instead of recognizing and adjusting a few seconds after the problem is full-blown. 

It is primarily the nuanced details occurring within the weld puddle motion, puddle placement, puddle shape and solidification profile that determine the quality of the weld deposit. Because of this, it seems inherent that giving the welding operator this 10-times improvement in detailed visibility (that’s an understatement) should reduce remote mechanized welding defects by at least 70 to 90%… but I suspect it can probably enable 95% defect reductions in many situations.

All considered, the system seems pretty cost-effective, with fast payback in many production environments.  What’s the cost?  Think “best new cars on a budget” without fancy options or extra-status badges and you’ll have an idea of the price range.

What about the Xiris equipment design and durability?

Well-engineered design seemed evident in almost every aspect of the Xiris equipment:Xiris control console interior

  • Engineered and tested durability in high-temperature environments, using Exair chilled compressed air in the temperature-monitored camera housings, and optional high-temperature insulating wraps. Its’ tested camera/cabling capabilities can comfortably handle a 500F preheat environment when fully outfitted.
  • Matured control console design, with cooling and filtration
  • Durable high-performance cabling with sealed end connectors
  • Intuitive software interface  design, with graphic-symbol-driven screen layouts and screen swapping 
  • Simple yet thorough system documentation
  • 3-layer password levels
  • Our optioned higher-storage capacity unit provided about 130 hours of dual-camera weld-arc recording time
  • Amazing pixel achievements in the clarity and value of the highly engineered weld imaging
  • Continued improvement efforts in the software-use details

In summary, I found the Xiris system is designed to be easy to use, easy to maintain, and quite durable with reasonable care and use.  How easy and intuitive was it to use?  I had confidently selected and labeled a hardback notebook, knowing that I would need to take a number of important notes on how to accomplish and recall various Xiris tasks and tricks.  I never do that, but I “knew” I would need it, and I wanted to “pick” Cornelius’ brain on such things.  I had the notebook with me the entire time, but I could never identify anything that I needed to write down: that’s how easy and intuitive it is to use, and how thorough the short Xiris system manual is. 

In short, this is disruptive, groundbreaking world class welding technology that’s not R&D: it’s ready for mainstream.  My congratulations to Xiris on a fantastic product line that should prove to be a game changer in profits and weld quality in many automated or mechanized welding applications.


Manufacturing Executives – What is Your Most Complex Process?

October 29, 2012

If your manufacturing production process includes welding assemblies together, here’s a valuable challenge. If you think it’s exaggeration to claim that arc welding is the most complex process in your plant, humor me for just one paragraph.  I bet you can’t name one other non-welding industrial process in your operations that is as complex as the most common arc-welding process: GMAW (Gas Metal Arc Welding, or MIG/MAG). GMAW (“MIG”) includes at least 13 variables, of which most are interactive with multiple other variables, and it joins metal via an open electric arc that creates simultaneous multi-phase high-speed transitions between solid, liquid, gaseous and plastic states to form 3-dimensional weld penetration profiles with various chemistries and conflicting/competing grain structures which have widely varying impacts on physical and chemical properties.

Think about it. Ask your engineering manager about it. Is there any process more complex?  Stamping? No. Extrusion molding? Nope. Machining? No again.

Are you convinced yet?  If so, here’s a question that’s likely worth a decade of your career:  how is your company doing in hiring, empowering and leveraging expertise in welding sciences to create a formidable level of competitive advantage and profitability?


The Top Two Welding Excellence Obstacles in US Manufacturing

April 4, 2012

Does your company want the profitability and competitive advantage of welding excellence?  What’s standing in the way?  Two years ago I started a survey poll asking manufacturing welding engineers “what do you think are the Top 2 biggest obstacles to welding excellence in American manufacturing, in the facilities you are personally familiar with?”

Many welding engineers responded, and here were the top answers as of April 4, 2012:

 20%     Staff don’t support weld requirements, and force upstream problems on welding.

20%     Poor welding process knowledge in the design team.

15%     Unqualified people dictate process without honoring Welding Engineering expertise.

14%     Manufacturing welded assemblies with NO degreed welding engineer.

7%       Welding Engineers lack time/support to find and justify the best solutions.

5%       The Manufacturer is too intently managing the economic death of the plant to invest and save it.

 (In general, most WE’s picked at least one of the top two answers, then their second pick ranged among the other choices. The other answers received only one or two votes. You can see them in the poll.)

It follows logically from this survey that if you want to remove obstacles and create welding excellence in your company, that those issues must be addressed.

Additional “gold” came in the comments responding to the poll, which I’ve added below. A key point for me is that because welding is the most complex process, it requires core expertise that can reach to the upper echelons of the company: the need is just as valid as for Tool and Die, or Quality, or OP Ex, or for Information Technology.  Even Six Sigma Blackbelts fall flat on their DMAIC’s when it’s a welding process project, yet when a Smart Welding Engineer is unleashed… the problem is quickly resolved.

The Title and corresponding role of “Welding Engineer” is far too limited in most company structures to enable excellence in welding processes. How many companies have a Director of Welding Technologies, or a Manufacturing Welding Engineering Manager? Very few. They are just as rare as the highly profitable welding operations they could produce.

Poll Comments: Read the rest of this entry »


The Welding Eye in Team

April 25, 2010

How Sharp are Your Team's Eyes?

How do you get welding excellence in new-product-launch in manufacturing?  Skilled contributors working with great teamwork. But what does that mean, and how does it work? Everyone has heard “there is no “I” in TEAM”. Still, every team member is an Individual. The “I” that counts most is the “eye” that team members have for real teamwork. They need a good “eye” for how they view themselves, their team, and their roles.

The critical part of the “eye” in team leadership is what John Maxwell calls the single most important factor in high-performance teams: The Law of the Niche, third of the 17 Indisputable Laws of Teamwork. The Law of the Niche says that every player on a team has a place where they add the most value. Their niche position takes advantage of a blend of their greatest skills.

I love producing exceptionally profitable high-quality results in manufacturing, and am keenly aware that it takes a great team. Exceptional welding automation is NEVER produced by a jack-of-all-trades engineer, nor by a micro-manager who dictates everything, nor by a talented robotic programmer whose ego ignores the input of a degreed welding engineer. Exceptional welding automation is produced by individuals with respect for each other’s niche skills in tooling, controls, and welding expertise, who are focused on exceptional results.

Legends of Welding Excellence and Teamwork

This welding engineering team developed and conducted several waves of a fantastic 4-week training program for robotic welding techs, covering process theory, troubleshooting, manual welding skills, PM’s, procedures, “crash” recovery, programming and “ninja” robot optimization secrets. Results were world-class because every W.E. played niche roles in different training segments, or covered for others. (Left to right above: Nick Perry, Mike Walther, Bill Stevens, Nick & Mrs. Erchak, Gerald Dunnigan, Jared Wilson, Brian Dobben, plus  Travis Sands and a couple of “top gun” robot integration programmers you don’t see)

Exceptional teams cultivate the “eyes” of the individual team members. Each member needs a realistic awareness of their niche skills, and a respect for the niche skills of their teammates. There’s room for pride and excellence in skills, because members know the excellent contributions of their unique skills are wanted and needed by the team. There is also freedom to learn from each other, to ask for help in weak areas, and to rely on others strengths.

A major team pitfall is not recognizing and valuing skills and weaknesses. Which expertise niches do team members bring, and not bring, to the team?

Drop pretense, and play to strengths. By consistently passing the ball to the person who is best able in that moment’s situation to move toward scoring, a team will consistently get high-performance results. By neglecting to help egotistical ball-hogs use the team’s skills, even teams with good athletes will consistently struggle and score low.

Just as you buy a drill to make holes, you buy welding automation to make welded products. It is crucial to realize that welding: is the core process;  is typically the most complex process in the plant; only welds like an expert when it is taught by highly trained experts.

To excel, every essential portion of a welding automation project must faithfully serve both the physics of the core process, and the end-goal of profitable stability and quality in production. Elegant simplicity and robustly profitable quality are hallmarks of automation excellence.  As leader of the core process, the Smart Welding Engineer is responsible to convey those process needs to the controls and tooling, and call the process shots as the welding quarterback.

And yet, every team-member is like the turtle on the fencepost, who didn’t get there on his own.

Brian Dobben


Top 10 Strategies for Expensive Welding Automation

April 11, 2010

It seems some companies love expensive low-profit welding automation.  Two frequent ops approaches are substituting myths for facts, and not allowing a welding expert to make welding decisions. Here are my Top 10 Production Management Strategies for Expensive Welding Automation in the manufacturing plant:

  1. “Just run it – that’s why we have weld repair”
  2. “Anyone in maintenance is qualified to adjust welds”
  3. “We can’t get time for PM’s” (we’ll take downtime instead)
  4. “We had to postpone weld training to save money”
  5. “If the weld fixture won’t run the parts, just shim it.”
  6. “We need to find the welding guy [engineer] something to do: he spends too much time standing around doing nothing” (except watching the processes to engineer and plan improvements)
  7. “We ordered cheaper weld wire to save money”
  8. “Quit complaining – just weld the parts” (out of spec)
  9. “Welding is simple – we don’t need experts: we have suppliers who need to earn their keep”
  10. “Don’t worry – the customer hasn’t complained”

(OK, yes, those are actual quotes from production management staff.)

I’m sure you’ve heard some “whoppers” – please share them in the comments so we can all moan and laugh! (And we can send a link here when we hear a “brilliant” welding management strategy suggested.)


The Fall Guys

January 7, 2010

Scapegoating – the practice of selecting a “fall guy” to take the blame, thus deflecting deserved outrage away from those at fault, and saddling the (mostly) innocent with undeserved suffering, penalties, and a mud-smeared reputation.

When it’s more fully defined like that, hinting at some of the abusive downside, it’s easier to see how damaging this ignoble practice really is.  Of course the most dastardly versions of scapegoating fire the fall-guy so that they can’t defend themselves or correct the concocted stories.  And if his boss is too noble to go along with the ploy, well, you have to fire him too.  But one of the most neglected aspects is illustrating the penalties and costs paid by the people still at the company… however long it might survive its’ management malpractices before workers are laid off or plants close.

Last year (not long ago), a consulting engineer mentioned to me that he had lost track of how many times executive staff had used him as a scapegoat.  And not long ago, I was inspired to write a poem that I suspect many can relate to.  I’ve decided to publish it here, as my tip of the hat to all those talented, honest and dedicated engineers who have suddenly found themselves struggling for breath and blinking at the sky as the Fall Guys.  May it inspire better decisions, greater boldness, more nobility, and a more wisely wary outlook for all.

The Manufacturing Company

There was a certain company, that welded many things,

and yet their questions rarely held an engineering ring.

Customers often urged them – hire a welding engineer.

But those sciences and physics were shunned without a fear.

.

Yet eventually the time would come from management-ly choices,

when a string of poor decisions drowned the ignorant wise voices.

These two sharp guys will likely do, from MIT and LeTourneau too.

We’ll hire them to do some magic, wait briefly for a furry rabbit.

.

This might be hopeless, it’s certainly bleak –

How long do we need an engineer you think?

When customers grow too irate, let’s fire the engineers we hired of late,

and hide our failures as their missed dates.

.

Ignorant of the lurking plan, yet alarmed at how the meetings ran,

the engineers were disturbed to find the obvious needs dismissed.

Then grave alarm set in, when contract terms were pushed aside

and executives announced a plan to sell their customers a lie.

.

Shouldn’t it be obvious – the deeper hole they dug

Was more desperate and impossible than fibbing with a shrug?

Why not face the growing stench of putrefied decisions,

And root out the unwillingness to replace fantasy with vision?

.

What do you do when you face a chasm with an uncompleted bridge?

Do you slow the train and rush ahead with the rails and spikes and girders,

Which were needed but never purchased because you gave those orders?

Or do you stoke the fire still hotter and yell ahead to hurry,

And throw off the patient bridge designers and blame them for the dirty

wreck you’ll soon be in,

When car after car goes sailing off the cliffs that you have chosen?

.

Ah, pretending all is simple and the answer’s “git ‘er done” –

Taxation’s cursed sea of MBA’s who can’t even make part one.

.

Brian Dobben – 2009

I know several people who can personally relate to that.  I’ve also met a few who claim that such unethical, abusive behavior is only wrong if you get caught.  That shouldn’t be surprising.  Harvard Business School and other “higher education” circles are reportedly gripped by moral retardation and long ago turned their “business ethics” classes into studies rationalizing how to separate low-risk fraud from high-risk fraud. The underlying assertion is that the only unethical decision is the one you publicly got caught in, which crassly ignores the penalties to the company in lost profits, missed business, and vital human talent assets jettisoned or crippled. So “wrong” and “evil” have become concepts as slippery as the meaning of “is” in the Clinton Administration, or “American citizen” or “bailout” or “terrorist” in the Obama regime.

I assert that real men are more grounded in reality than that, and that noble behavior is not dead. Even nobility like stepping up and admitting that you didn’t listen and made a poor decision, and committing to do much better.  But with nervous manufacturing staff feeling more at risk in a depression economy, has scapegoating now become a more widespread problem in engineering and management circles?

If so, what are the causes?  And how can we work to prevent or avoid such situations?

And if you’re an HR manager, or a Recruiter, or engineer that finds yourself an unwilling party to such professional abuse, what are your options?  What do you do?


Where Pulse Waveforms Meet Excellence

July 7, 2009

I thought that others might benefit from this Q&A on pulse GMAW welding.

Brian:

I have a cell that I am working on that has a pulse capable power supply.  It currently runs .035″ solid lincoln wire.

If I was to experiment with pulse, somewhere in the back of my mind I thought you always taught us to go up to .045″.  Is that correct or am I getting confused with some other application?

Thanks, N.

N –

Thanks for the question. You are correct.  This is the reason why various welding “experts” say that going to pulse causes a reduction in penetration that is often a problem. Going up one wire size is the “trick” that puts you back in the same ballpark on penetration, while gaining the benefits that pulse can bring – such as a longer arc length for lower spatter, spatter that is cooler and much less tenacious in adhering, and a different bead profile that often brings advantages.

Basic Variables of the Pulse Waveform

Basic Variables of the Pulse Waveform

Now, once you’re in pulse, then the window of opportunity opens in terms of waveform selection/alteration to optimize your weld characteristics for most advantage. Some say that “a factory waveform is already optimized and pulse is pulse”. That’s the voice of ignorance.  The Pulse-GMAW process is the waveform, which produces specific results. Repeatability of the results hinges on the consistency of that waveform’s reproduction and stability.  Each and every waveform produces a unique balance in target criteria such as travel speed, deposition rate, resistance to burn-through, spatter production, out of position capability, fit-up gap variations, sidewall penetration, bead width/depth, etc.  Sure, the “factory waveform” was optimized, but probably not for your factory or specific application. Odds are that the “canned” waveform does not have the target balance you need to get highly optimized results like fast cycle times, zero rework, and no quality concerns.    Read the rest of this entry »