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We know,Torque wrenchGenerally, it takes one year to do torque verification to determine that its accuracy is within the qualified range of ± 3% before it can be used in some industries with high bolt pretightening accuracy requirements, such as wind power and other industries. So manual torque wrench generally use torque is small, also need to do regular torque verification!

Whenever it comes to bolt connection, it is necessary to consider the reliability of its connection, especially in the manufacturing industry such as aircraft, automobiles, high-speed rail and other precision equipment. In order to ensure the tightening quality of fasteners, torque wrenches are widely used in the tightening process of various mechanical products to ensure the scientific and accurate tightening torque of bolt fasteners, and reduce the thread fracture and failure of threaded connectors due to excessive torque, which seriously exceeds the yield limit of threaded connector materials, fastening failure and fastening failure caused by too small torque. The existing precision must be the same as the hydraulic torque wrench, there are factors that affect the torque accuracy, suchTorque wrenchParts wear, corrosion, force spring failure, etc. will cause the torque wrench accuracy is reduced. Therefore, in order to ensure the pre-tightening effect of the torque wrench, regular torque verification is very necessary.

So how long is it usuallyTorque wrenchWhat about torque testing? It is generally recommended to use 5000 cycles, or use less than 5000 times in half a year as a half-year verification cycle. If the spare parts are not used for a long time, the recommended verification cycle is one year.

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