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LIU Hui, GAO Guanlin. Influence of Technical Parameters of Nuts on Bolts Pretension[J]. Safety in Coal Mines, 2018, 49(12): 126-127,131.
Citation: LIU Hui, GAO Guanlin. Influence of Technical Parameters of Nuts on Bolts Pretension[J]. Safety in Coal Mines, 2018, 49(12): 126-127,131.
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Influence of Technical Parameters of Nuts on Bolts Pretension

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  • Published Date: December 19, 2018
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  • The experiment of conversion efficiency of bolts tightening torque was carried out on site, the relation between installation torque and pre-tightening force was studied based on the different shapes, materials as well as damping filling modes. This experiment shows that: compared with the hexagon damping nuts, the nodular graphite nuts and the metal piece filling nuts respectively, the bolts with the square damping nuts, the malleable cast-iron nuts and the resin filling nuts require less installation torque to meet the equal pretension. Combining with the actual situation, the reasonable advices for improving the bolts pre-tightening force was given.
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    • References (10)
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