The Importance of Torque Auditing

DI-12 Breakaway Torque Tester
DI-12 Breakaway Torque Tester

Controlling the tightening torque on fasteners (bolts and screws) being tightened by impact and non-impact power tools is challenging. Power tools provide dynamic torque that can vary depending on many variables, such as joint material types, joint layer thicknesses, temperature, the presence of lubricants, etc. As a result, “applied torque” does not equate to “actual tightening torque.“ For this reason, auditing the actual tightening torque is critical.
The most common torque auditing method is breakaway torque testing. This process involves applying additional torque to a tightened fastener to detect actual tightened torque as the fastener starts moving. This assumes (theoretically) that torque values dip down briefly before climbing to higher than original tightened torque. However, auditing fasteners made of plastic or small-size screws is often challenging, as standard breakaway testing will not always show a clear dip in torque. Additionally, performing a good breakaway test requires a skilled operator and many hours of training and experience.
Using an Imada DI-12 motorized auto-detect breakaway torque tester, operators achieve a more reliable and consistent breakaway torque measurement, even in the case of small or plastic fasteners. The DI-12 also can be used to detect the yield torque value of a specific joint, to help establish an ideal tightening torque value by testing—not by commonly used calculation methods. It’s easy to use and provides rapid, reliable testing for actual tightening torque.

Summary
The Importance of Torque Auditing
Article Name
The Importance of Torque Auditing
Description
Determining actual tightening torque using breakaway torque tester
Imada, Inc.