Published August 2013
By PMPA Staff
The Precision Machined Products Association will be awarding Continuing Education Units (CEUs) to individuals who take part in the association’s various learning opportunities.
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
Published August 2006 By PMPA Staff Bill Sammon, the senior White House correspondent for the Washington Examiner, will speak at the PMPA Annual Meeting during the Business Session to be held on Tuesday, October 3, 2006. VIEW ARTICLE
Unavailability of Bessemer Steels Bessemer Steel is no longer produced. So why isn’t it produced and what do you do when the print says “Bessemer steel”? by Miles Free Director of Industry Research and Technology, PMPA Published September 1, 2022 From time to time, our customers ask our shops to quote on Bessemer steel for…
Friction or inertial welds are a key process for attaching precision machined components to other parts like shafts or bodies or forgings.
Easily joins dissimilar metals. This means the ability to use more expensive corrosion resisting materials where needed, and less resistant but sufficiently strong materials where there is no need- ON THE SAME PART.
The full surface of the cross section is made up of both metals, airtight and absent of voids.
Friction welds are higher strength than other means of joining.
Friction welds often cost less as there are no consumables like filler metals fluxes etc. (This would be the bottom line for most businessmen, but I chose another, see # 7 below.)
Friction welds minimize the Heat Affected Zone (HAZ).
Friction welding minimizes the need to clean furnace residues from the entire part post welding.
The ability of a designer to optimize material choices by using friction welding cannot be overstated
Lead has no apparent effect on the yield strength, tensile strength, reduction of area, elongation, impact strength, or fatigue strength of steel. ”
For this reason, the addition to lead to steel is not considered an alloying addition. The addition of lead is a great way to improve the economics of machining and improving the surface finish of complex parts from steel.
Published April 2011 By PMPA Staff The Corps Group is excited to be a part of the 2011 Precision Machined Products Association’s (PMPA) National Technical Conference. VIEW ARTICLE