E-Mobility — Opportunity, Not Existential Crisis 

“We firmly believe that e-mobility presents a significant opportunity for innovation and growth.” — Markus Horn

by Miles Free III

Director of Industry Affairs, PMPA

Published August 1, 2023

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I recently had the opportunity to speak one on one with Markus Horn, CEO at Paul Horn GmbH in Tubingen, Germany, at their June 2023 Technology Days event. Knowing the importance of the conventional internal combustion and diesel markets to Horn’s precision tool manufacturing, I asked for his critical thinking on the threat of the move to e-mobility to the company. The critical thinking and outline of different facts raised by Markus is a welcome change that helps us look through the hype of the “inevitability of e-mobility” to see a much different vehicle market in the future than the media would have us believe.

Full disclosure — I have been a proponent and early adopter of e-mobility. My first white paper for PMPAin 2003 was about 42-volt hybrid auto technology. I am a delighted EV owner. 

n the United States, the automotive industry is the largest market served by our precision machining shops. The automotive industry plays a crucial role in the global economy, with approximately 100 million vehicles produced worldwide each year. Knowing that just one of Horn’s insert lines (the 312) alone had created more than 1,165,071 miles of piston grooves for internal combustion engine (ICE) for automobiles — the equivalent of cutting your way 147 times around the Earth or flying to the moon and back nearly five times — I expected some fear of e-mobility’s impact on the company and our industry.

I was pleased when Markus Horn stated that, “While some perceive this transition as an existential crisis for traditional automotive manufacturers, we firmly believe that e-mobility presents a significant opportunity for innovation and growth.” So much for the inevitable loss of our legacy internal combustion vehicle market.

Comparing the number of parts on an ICE vehicle to an electric vehicle (EV) highlights another aspect of the shift toward e-mobility. Traditional ICE vehicles consist of numerous complex parts, whereas EVs have significantly fewer components. This reduction in parts not only simplifies the manufacturing process but also provides an opportunity for streamlining production and reducing costs. But decreased parts counts could mean reduced production in our shops.

Markus refuses to be pessimistic about potential decreased parts. One of the key opportunities for innovation and growth in the transition to electric vehicles is the need for greater precision in sealing and rotating surfaces to reduce vibration and noise. The sounds created by the equipment for controlling battery, motor and cabin thermal management are no longer hidden beneath the din of the engine and gear train noise as in legacy ICE autos. This requirement creates a demand for advanced manufacturing tools, and it is in this application that companies like Horn have a substantial role to play. 

While the increasing electrification of vehicles presents numerous benefits, it also poses certain challenges. One of the key concerns is the consumption of copper, a vital component in electrical systems. In 2022, global copper consumption stood at 25.1 million metric tons, with the U.S. accounting for 1.9 million metric tons. Forecasts predict a further increase in global copper consumption to 29.19 million metric tons by 2027, a 16.92% rise. This surge in demand necessitates the development of efficient copper recycling and supply chain management systems to meet the needs of the e-mobility market. But difficulty with the supply of copper and other e-materials could constrain the growth of e-mobility.

Furthermore, the transition to EVs highlights infrastructure limitations and energy supply intermittency issues. Markus points out that in Germany, for example, the housing stock’s electrical service is not currently capable of supporting the load required for widespread EV charging. In multiple domicile buildings, perhaps only a fraction of the residents will be able to have charging equipment installed, due to the limits of the building’s electrical service. Additionally, the grid in Germany, which has replaced baseline nuclear power with coal (needed because of the intermittent nature of solar and wind power) faces challenges in supporting the charging infrastructure effectively. And what is the climate sense of replacing carbon-free nuclear with coal?

Addressing these challenges requires a multifaceted approach. Markus has done the math. While battery storage can help relieve intermittency issues, it also adds challenges and obstacles to investment. These include additional energy losses at the battery and potentially prohibitive payback periods/ROI declines on investments. No one expects technology and innovation to remain at current levels, but we are not seeing any dramatically more efficient energy storage solutions or advancements in renewable energy generation in the immediate future.

It is important to note that the decision to transition away from internal combustion engine vehicles by 2035, as ordered by the European Parliament, does not solely determine market dynamics. Markus is emphatic that market demand is primarily driven by customers rather than officials. While it is essential to consider regulations and policies, they must be aligned with the ever-evolving needs of the customers and the realities of the national infrastructure and technology deployed.

Horn, as a leading player in the automotive tooling industry, embraces the opportunities presented by e-mobility. It understands that standing still is not an option in today’s rapidly evolving automotive landscape. By focusing on science rather than politics, Markus recognizes there is an alternative to the “e-mobility is inevitable, winner-take-all,” paradigm. He points out that a combination of diesel and hybrid technologies currently offers the best and cleanest transport solution. While the current regulations have ordered no further ICE vehicles by 2035, he sees no reason to panic. 

“The officials in the Parliament in 2030-2035 will have different facts and different agenda. The logics they have then will certainly differ from our logics today. The regulations of today reflect the desires of today, not the realities of the future. An all-electric transportation system is neither inevitable nor likely when one gives an honest review of the facts.”

Markus sums up, “We are at the most technological point that you can reach today, and we are organized to lead the next needed developments in all mobility, not just e-mobility. Our tools and processes continue to evolve to serve applications in other areas impacted by the waves of demographic change and progress globally. We are optimistic that together we will continue to develop and master the tools needed to embrace the technological advancements and new developments in physics that will shape the future — not just of mobility — but of our world.”

E-mobility is an opportunity, not an inevitable, existential threat. If you think carefully about the facts, and the value that we all can add, our very best will continue to lead to solutions that will improve our quality of life and sustainability.  

 

 

Author

Miles Free III is the PMPA Director of Industry Affairs with over 50 years of experience in the areas of manufacturing, quality and steelmaking. Miles’ podcast is at pmpa.org/podcast. Email Miles

 

STATE OF MANUFACTURING – Pennsylvania Manufacturing

by Joe Jackson

Marketing & Events Assistant, PMPA

Published August 1, 2023

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Fabricated Metal Products Manufacturing is a subsector of manufacturing that makes critical goods from metal components.

Precision Turned Products Manufacturing is a subsector of fabricated metal product manufacturing that makes the components that MAKE IT WORK!

 

Fabricated Metal Products Manufacturing is a subsector of manufacturing that makes critical goods from metal components.

Precision Turned Products Manufacturing is a subsector of fabricated metal product manufacturing that makes the components that MAKE IT WORK!

 

PENNSYLVANIA ECONOMIC OUTPUT

Pennsylvania Manufacturing
NAICS 31-33
$101,950,000,000

Fabricated Metal Product Manufacturing
NAICS 332
$17,841,106,000

Precision Turned Product Manufacturing
NACIS 332721
$665,648,000

PENNSYLVANIA MANUFACTURING ACCOUNTS FOR

Manufacturing Is Productivity –12.67% of the Pennsylvania total output (GDP)

Manufacturing Builds Businesses – 12,138 manufacturing establishments in the state of Pennsylvania.

Manufacturing Creates Jobs – Jobs: 9.53% of all Pennsylvania employees are in the manufacturing sector. (562,700 employees)

 17.51% of all Indiana employees are in the manufacturing sector. (546,000 employees)

On average, each manufacturing job created provides 2.5 additional jobs in Pennsylvania.

 

Manufacturing produces for PENNSYLVANIA!

  • Pennsylvania ranks 5th in the nation among all the states in manufacturing employment.
  • Manufacturing is the largest GDP producer in Pennsylvania.
  • Fabricated metals is the third largest manufacturing sector in Pennsylvania.

 

Pennsylvania is a great place for a career in manufacturing

  • Manufacturing jobs pay on average 36% more than the average jobs in in Pennsylvania.. (according to NAM.org)
  • These higher paying jobs provide workers more than just higher wages; 90% of manufacturing workers have medical benefits,
    along with 78% of workers receiving retirement contributions from their employers

 

Sources: NAM.org, US Census, dced.pa.gov, pamanufacturingcouncil.com
Data selected to show relative values. May not be directly comparable due to differences in
sampling, analysis, or date obtained.

 

 

 

Author

Joe Jackson

Marketing & Events Assistant, PMPA

Email: gro.apmp@noskcajj — Website: pmpa.org.

PMPA Craftsman Cribsheet #118:
Put A Little Shine In Your Day

A few hours of preventive maintenance time now will save you an order of magnitude in downtime later by getting ahead of problems.

Published August 1, 2023

By David Wynn, Technical Services Manager, PMPA

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Make it Shine (a Dave & Davey video)

We talk about 5S a lot in manufacturing. There are signs hanging up everywhere. We get emails about it. We go to sessions at conferences that give us all types of systems and tricks. Some of this gets lost in the day-to-day struggle in a shop. We build the system but bypass some of the steps. 

If you had a collector’s car, you would wash it and wax it. You would not let it sit in the garage gathering dust. If you took it out and drove it, you would certainly not let it stay grimy and park it. You take care of an expensive collector car. It’s something you spend time checking for oil leaks and the door seals, and ensuring everything is in tip-top shape.

Now I ask you, do you do the same for your machine tools? Most of the tools in our shops cost as much or more than a new Ferrari. When is the last time you washed and waxed your machine tool? You read that right. I just asked when the last time was you did a full detail on your machine tool. That is the third S in 5S right? You are supposed to shine. 

If you are not doing detail work on your machine tools, this is why you should. When you walk up to a machine tool that has oil and grime all over it, how do you tell if it is leaking oil or if that was just splashed on there? If there is hydraulic oil all around the way oil reservoir, how do you know if it is leaking? Is the sight glass so cloudy you can’t even see how much oil is in there? If so, there is no way you will be able to see the condition of the oil in the reservoir. How often do you trace down the way lube lines to ensure they are pumping? If the drip points are full of chips and debris, you can’t. The way lube may not even be reaching its intended target. 

You should be doing regularly scheduled details on your machine tools. Once a month is a good time frame. You don’t even have to shut the machine down for external work. Just wipe down covers and keypads while it’s in production. Then schedule a few hours of downtime a month to go in and do a deep clean on the parts you can’t reach with it running. A few hours of preventive maintenance time now will save you an order of magnitude in downtime later by getting ahead of problems. Think of this machine like that collector car. Clean all the areas. Make sure to clean your keypads. Keypads that look worn, are usually just grime.

Make sure to clean the fans on all the motors and cabinets — those fans keep your sensitive electronics cool and you don’t want coolant mist clogging them. Check for hydraulic leaks. Check for air leaks. Are there chips building up anywhere they shouldn’t? Check that door interlocks are working correctly. Check seals on doors and spindles. This is the time to really make sure everything is as it should be. 

A couple tablespoons of Dawn dishwashing liquid in a spray bottle filled with water works well. For the bulk cleaning — such as chips, debris and heavy oily grime — use a heavy duty wiper, then use a softer disposable shop towel to buff the finish. Also, buff the paint to make your machine shine. Take pride in what you do. Our machine tools are like Ferraris that we use every day. 

 

 

 

 

 

 

 

 

 

 

 

Author

David Wynn

David Wynn, MBA, is the PMPA Technical Services Manager with over 20 years of experience in the areas of manufacturing, quality, ownership, IT and economics. Email: gro.apmp@nnywd — Website: pmpa.org.

PMPA Speaking of Precision Podcast:

Pricing: An Interview with Nicole Donnelly of DMG Digital

Miles Free and David Wynn chat with Nicole Donnelly, Founder and CEO of DMG Digital about all things pricing and some ways we should be going about it in our precision machining shops.

 

Published July 17, 2023

 

 

PMPA Speaking of Suppliers Podcasts:
All About Copper

Miles Free and Chip Libengood, Vice President of Sales for Aviva Metals discuss the importance of copper based alloy segregation to the infinite recyclability of copper.

Published July 12, 2023

 

Turned and Polished Steel Barstock: How It Is Manufactured, How It Impacts Your Shop

Understanding the benefits provided by turned and polished steel barstock and its differences from cold-drawn steel barstock can help you and your team avoid unexpected performance issues.

by Miles Free III

Director of Industry Affairs, PMPA

Published July 1, 2023

Turned and polished steel bars have the mechanical properties of hot-rolled steel bars, but exhibit a greatly improved surface finish and dimensional accuracy. Turned and polished steel bars are produced from hot- rolled steel bars that have been descaled, straightened and had stock removal taken in a turning machine before final polishing. This minimizes any surface imperfections and ensures dimensional conformance with ASTM A 108 Table A1.1 (carbon grades) and Table A1.2 (alloy grades.) These bars are held to the same requirements for straightness (Table A1.4) as cold drawn. Turned and polished bars are relatively free from residual stresses, compared to cold-drawn, non-stress-relieved steel bars, due to the lack of cold-working strain.

The stock removal is taken from the outside diameter of the bar by tools held in rotating cutting heads as the bar is fed through the machine. A second station presses hardened steel rolls against the newly turned surface to smooth the surface and impart a bright finish. Turned and polished steel bars cost more than hot-rolled steel bars because of the cost of their processing as well as the yield loss resulting from the stock removal (chips removed) from the turning operation.

The turning and polishing process results in a bright finish relatively free of seams, slivers and other imperfections, but does not enhance mechanical properties because there is no cold work applied. The turned and polished bars are then protected with a rust preventive prior to packaging and labeling for shipment.

In contrast, to produce cold-drawn steel bars, hot-rolled steel bars, either in cut lengths or in coils, are first cleaned by shot blasting or acid pickling to remove the hard abrasive oxide scale on the surface. 
Then they are pulled through a carbide die in the presence of high-pressure lubricants which reduces the bar’s cross section. This process is called cold work (no heat is added in the process). 

The cold work trues up shape and holds diameter size to a very tight tolerance. The process also  improves strength (increasing both yield and tensile strength) and hardness, while reducing ductility (% elongation and % reduction in area). The drawn bar is then straightened and cut to length with further testing for surface imperfections, if specified. 
Bars then have rust preventive applied and are packaged and labeled for shipment. 

The difference between turned and polished and cold- drawn steel bars is two-fold: (1) there is no cold-working enhancement of mechanical properties in turned and polished steel bars which means no improvement in machinability, and (2) turned and polished steel bars have had stock removal taken to minimize surface imperfections, cold-drawn steel bars have had no stock removal taken. 

Why Choose Turned and Polished Bars?

The turning operation adds value by improving the quality of the hot rolled, as rolled steel bars, by minimizing decarburization, seams, slivers and any other surface imperfections. As no cold work is performed, the mechanical properties of the turned and polished bars are those of the hot-rolled steel bars used as their feedstock. 

The process of cold drawing is done at ambient temperatures, increasing mechanical properties by a process called cold work. This cold work increases yield strength, substantially; the tensile strength somewhat; as well as the hardness. At the same time, the ductility is reduced. These changes improve the steel’s machinability. 

Turned and polished bars are therefore a less suitable choice for machining, as the lack of cold work makes them less machinable than a comparable cold-drawn bar. Turned and polished bars are used in applications requiring a minimum of machining such as shafting and power take off applications where little machining to produce the part are required.

Tolerances for both turned and polished and cold- drawn steel bars are unilateral (to the minus only) from the specified size. Out of roundness in these products is one-half the size tolerance, per footnote D for both tables. The chemistry which identifies the material as a particular grade as well as other requirements such as product analysis tolerances and grain size can be found in ASTM A 29, Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot Wrought, which is included by reference in ASTM A 108.

The reasons to select a turned and polished steel bar are few but compelling:

  • The hard abrasive scale has been removed — the product is bright, smooth and has a workmanlike finish. 
  • The turning operation removes the outer layers of the hot-rolled steel bar, minimizing decarburization and the presence of seams, slivers, laps and other surface imperfections.
  • The  turning and polishing operation also ensures dimensional conformance and an improved surface finish.  (RMS 20 is typical)
  • The tight dimensional and out-of-round tolerance may result in a reduction in processing needed. 
  • The straightness (lack of runout) as well as the better concentricity and dimensional tolerance makes turned and polished bars ideal for shafting applications. 
  • Standard grades and sizes are widely stocked and available for prompt delivery.

What don’t you get with Turned and Polished Steel Bars?

Enhanced mechanical properties. And, because of that, lower machinability. As no cold work has been imparted to the material, the existing mechanical properties of the starting hot-rolled steel bar carry over into the turned and polished bar. This results in lower machinability than found in a cold-drawn bar.  What you do get is similar dimensional and straightness tolerance, bright smooth finish, relative freedom from decarburization, seams, slivers and other surface imperfections. Turned and polished bars are often the choice for safe reliable transmission of torque and mechanical power. For applications where resistance to wear is required, turned and polished bars can have their surface enhanced by hardening treatment.

Final Word — “Cold Finished” Steel Bars

Both turned and polished and cold-drawn steel bars are “cold-finished” steel bars. They are processed at ambient temperatures. So, when someone uses the term “cold-finished steel bar” it is important to determine exactly what they mean by cold finished. For best machinability — and enhanced mechanical properties — cold drawing is indicated. Turned and polished is often the best choice for shafting and other applications requiring little machining but having a high need for surface and dimensional integrity. 

 

Author

Miles Free III is the PMPA Director of Industry Affairs with over 50 years of experience in the areas of manufacturing, quality and steelmaking. Miles’ podcast is at pmpa.org/podcast. Email Miles