SPC Innovations, In-machine gaging and attachments
Published

Upset Testing for Steel

An “upset” can be performed to determine how the steel will perform under compressive load.

Share

This photo shows how upset testing works.

Mechanical properties of a given steel under compression compare closely with its tensile properties. An “upset” can be performed to determine how the steel will perform under compressive load.

A brittle steel under compression will ultimately fail by breaking along cleavage lines at an angle approximately 30 degrees from the axis of pressure being applied.

A more ductile steel flattens out, rather than cleaving, showing vertical cracks around the outer circumference. This ductile steel will not break, but will continue to flatten as more stress (load or force) is applied.

This compression or upset test is helpful for assuring that steel will successfully cold work. It can also be used to determine the extent of seams, laps or other surface imperfections on the surface of the bar. That’s what I used to do when we were producing drawn wire for cold-heading applications.

 

Originally posted on PMPAspeakingofprecision.com blog.

 

Techspex
Star swiss-type automatic lathes
World Machine Tool Survey
Marubeni Citizen CNC
Kyocera
Efficient, Durability, Advanced CBN Abrasives
SolidCAM
manufacturer of machine tools
SolidCAM