Torque vs Tension:
Before comparing torque vs tension, first, you should understand how a tightened bolt behaves.
Bolts that are correctly tightened make use of their elastic properties. To create a tight joint they must behave like springs.
When a load is applied by a torque wrench or tensioner, the bolt stretches and tries to return to its original length. The tension produced by the load leads to a clamping force, which works with the friction from the bolt’s threads to produce a secure joint.
The Difference Between Torque & Tension
Torque is the measurement of the force that causes something to rotate, for example, the turning force needed to spin a nut around the threads of a bolt.
Tension is the stretch or elongation of a bolt that provides the clamping force of a joint.
Bolt torquing and bolt tensioning are both widely accepted ways to seal a joint. Each has different advantages and disadvantages and suits different types of application.
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Description: This Video is the second step to get familiar with a Welding Procedure Specification. How It looks, What are the basic components of WPS? Essential Non Essential variables, From where to pick the data? Comparison of the International Qualifying Standards in relation with the WPS Variables. ASME B 31.3, ASME B31.4, ASME B31.8, API 1104 Comparison of the WPS requirements. Discussion of all modules of a WPS taking a sample example.
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