Cummins partners with ORNL on repairs using metal Additive Manufacturing

September 22, 2017

Cummins partners with ORNL on metal 3D printed repairs

Cummins diesel engines are used in many heavy-duty truck makes globally (Courtesy ORNL)


Diesel engine maker Cummins, Inc., Columbus, Indiana, USA, is collaborating with Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA, to develop a method and material to repair the cylinder heads on heavy-duty engines by Additive Manufacturing.

Cummins diesel engines are used in many heavy-duty truck makes globally. According to the manufacturer, the cylinder heads on these engines typically wear out after a million miles on the road. Ordinarily, these cast iron parts would have to be replaced with new castings; a costly process in terms of time, energy and money.

Using the new method of repair, the research team ‘scoops out’ the worn section and uses a Direct Metal Deposition (DMD®) machine by DM3D Technology, Auburn Hills, Michigan, USA, to deposit a high-nickel-containing alloy over the damaged area. This material offers a number of properties which help to avoid cracking of the repaired cylinder head and increase its thermal efficiency

The goal of the new repair process is to save energy at the same time as extending the life and increasing the strength of the engine. “We’re decreasing the engine’s thermal conductivity, which holds heat in longer, and turning it into increased efficiency,” explains Nikhil Doiphode, Parts R&D Engineer at Cummins. “While these are not brand-new engines, we’re striving to make them better than new.”

In the latest issue of Metal AM magazine

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Extensive AM industry news coverage, as well as the following exclusive deep-dive articles:

  • Revolution, not evolution: General Motors on building an AM culture and the AM Dream Machine
  • The power of Additive Manufacturing in the hands of artists: Public works to small batch production
  • Growing momentum and broadening recognition: A status update on the rise of Electron Beam PBF
  • Improving carbon capture efficiency through Additive Manufacturing in the race for a liveable climate
  • The System of AM Systems: How Metal Powder Works’ in-process powder production could change metal AM
  • The next generation: Using metal AM to drive emissions reduction and educate the engineers of the future
  • Advances in the AM of refractory metals and hard materials at the 20th Plansee Seminar
  • Additive Manufacturing needs you: Why you and your company should get involved in standards development

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