Case hardened steel is a unique material coupling
a hard and wear resistant outer skin with a tough
impact resistant core. The result is a material with
desirable properties for harsh environments such
as automotive gearboxes and drive train components.
The nature and use of components produced
with this material demand high and repeatable
machined tolerances, surface finishes and
surface integrity. To meet these demands PCBN
cutting tools have evolved to offer a cost effective
and reliable machining solution for case hardened
Seco has been very active in the machining of
this material for many years, offering class
leading grades such as CBN050C and CBN160C.
We are continuing to demonstrate that through
grade and format innovation we are able to meet
your ever increasing demands.
Tapered plugs are used to repair and stop leaks in condensers, chillers and heat exchangers. They are driven into tube ends with a soft faced hammer until seated and sealed tight eliminating future leaks. Welding is optional depending on your application. Select a plug where the middle diameter will approximately match your tubing ID. It is best not to drive the plug in flush when installing, but to leave 1/4″ of the length exposed. The photo reveals grooved finishes for a better gripping surface, but smooth plugs are available as well. A wide range of sizes are manufactured from 2” down to .25”. Materials shown in the photo are 360 brass, 316L stainless steel and titanium; however, we will manufacture to your specifications and provide material certifications to suit your application. We understand that quick deliveries are critical for field maintenance and we won’t let you down. Please contact us for all your tapered plug needs. Author: Bill Wilke