大扭力電動(dòng)扳手主要用在鋼結(jié)構(gòu)行業(yè)，用來緊固有扭力要求的大六角螺栓，電動(dòng)扳手是扭力越大越好嗎?電動(dòng)扳手扭矩多少合適呢?
Large torque electric wrench is mainly used in steel structure industry to fasten large hexagon bolts with torque requirements. Is the larger the torque, the better? What is the proper torque for the electric wrench?
在施工中，使用電動(dòng)扭矩扳手控制施工扭矩具有很重要的意義。
In construction, it is of great significance to use electric torque wrench to control construction torque.
高強(qiáng)螺栓除了剪切力和拉力之外，還會(huì)受到振動(dòng)、溫度、側(cè)向應(yīng)力(風(fēng)力、流量、壓力等)、負(fù)載的改變等其他的一些作用力。
In addition to shear force and tensile force, high-strength bolts will also be subjected to vibration, temperature, lateral stress (wind, flow, pressure, etc.), load change and other forces.
電動(dòng)扭矩扳手扭力其實(shí)并不是越大越好，需要根據(jù)螺栓的大小來設(shè)定電動(dòng)扳手的扭矩值，如果所設(shè)定的扭矩值偏小，就會(huì)造成緊固不足，螺栓就會(huì)因振動(dòng)或循環(huán)載荷而松脫，如果緊固過度，用力不均勻會(huì)是法蘭轉(zhuǎn)動(dòng)使鋼結(jié)構(gòu)斷裂。所以要按標(biāo)準(zhǔn)扭緊連桿螺栓,千萬(wàn)不能認(rèn)為越緊、力量越大越好。
In fact, the greater the torque of the electric torque wrench, the better. It is necessary to set the torque value of the electric torque wrench according to the size of the bolt. If the set torque value is too small, it will cause insufficient tightening, and the bolt will loosen due to vibration or cyclic load. If the tightening is excessive and the force is uneven, the flange rotation will break the steel structure. Therefore, tighten the connecting rod bolts according to the standard. Never think that the tighter and the greater the force, the better.
