What does the term "torque bleed off" mean?

What does the term "torque bleed off" mean?

• A. The initial release of tension after installation
• B. The loss of torque after installation
• C. The gain in torque over time
• D. The increase of tension during application

Answer: (B)

The term "torque bleed off" refers to the phenomenon where there is a measurable loss of torque that occurs after a bolt or similar fastener has been installed and tightened. This can happen due to several factors, such as material settling, thermal expansion or contraction, or the relaxation of the materials being joined. Understanding this concept is crucial, especially in mining and industrial applications where the integrity of bolted joints plays a significant role in safety and equipment performance. Incorrect torque values can lead to loosening of joints, potential failures, and safety hazards in a mining environment. In contrast, options that suggest concepts like initial release of tension or gain in torque do not capture this specific loss of torque following installation. Additionally, while tension can increase during application of torque, that does not relate to the definition or understanding of torque bleed off.

The term "torque bleed off" refers to the phenomenon where there is a measurable loss of torque that occurs after a bolt or similar fastener has been installed and tightened. This can happen due to several factors, such as material settling, thermal expansion or contraction, or the relaxation of the materials being joined.

Understanding this concept is crucial, especially in mining and industrial applications where the integrity of bolted joints plays a significant role in safety and equipment performance. Incorrect torque values can lead to loosening of joints, potential failures, and safety hazards in a mining environment.

In contrast, options that suggest concepts like initial release of tension or gain in torque do not capture this specific loss of torque following installation. Additionally, while tension can increase during application of torque, that does not relate to the definition or understanding of torque bleed off.