扭矩型扳手的选择需要注意什么呢？
What should be paid attention to when selecting torque wrenches?
一、看马达，目前的电动马达分为有刷和无刷两种。
1、 Look at the motor. At present, there are two kinds of electric motors: brushless motor and brushless motor.
什么叫碳刷？有刷电机里面顶在换相器表面，电机转动的时候，将电能通过换相器输送给线圈，由于其主要成分是碳，称为碳刷，它是易磨损的。应定期维护更换，并清理积碳。
What is a carbon brush? The brush motor is pushed on the surface of the phase converter inside. When the motor rotates, it transmits electric energy to the coil through the phase converter. Because its main component is carbon, it is called carbon brush, which is easy to wear. It shall be maintained and replaced regularly, and the carbon deposit shall be cleaned.
无刷电机工作原理?无刷电机采取电子换向，线圈不动，磁极旋转。无刷电机，是使用一套电子设备，通过霍尔元件，感知永磁体磁极的位置，根据这种感知，使用电子线路，适时切换线圈中电流的方向，保证产生正确方向的磁力，来驱动电机。了有刷电机的缺点。
How does the brushless motor work? Brushless motor adopts electronic commutation, the coil does not move, and the magnetic pole rotates. Brushless motors use a set of electronic devices to sense the position of permanent magnet poles through Hall elements. According to this perception, electronic circuits are used to switch the direction of current in the coil at the right time to ensure that the magnetic force in the right direction is generated to drive the motor. The disadvantage of the brush motor is eliminated.
无刷电机虽然稍贵，但是由于故障率极低，寿命长，相对性价比较高。
Although the brushless motor is a little expensive, it has a relatively high cost performance due to its extremely low failure rate and long service life.

二、看扭矩，一般国内扭矩型扳手的扭矩可达10000牛米左右，而德国电动扳手的扭矩可达40000牛米。根据螺栓大小和工艺要求，挑选合适的扭矩范围。
2、 According to the torque, the maximum torque of domestic torque wrenches can reach about 10000 Nm, while that of German electric wrenches can reach 40000 Nm. Select appropriate torque range according to bolt size and process requirements.
三、看转速，转速直接决定了工作效率，转速快的扳手，能为操作者节省宝贵的工作时间。
3、 It depends on the speed. The speed directly determines the working efficiency. A wrench with fast speed can save valuable working time for the operator.
四、看精度，精度高的扳手，会在达到预设扭矩时精确的停止旋转，特别是对拧紧精度要求高的法兰螺栓，建议使用高精度扳手，可以有效的防止泄露。
4、 The wrench with high accuracy will stop rotating accurately when the preset torque is reached. Especially for flange bolts with high requirements on tightening accuracy, it is recommended to use a high-precision wrench to effectively prevent leakage.
以上就是为大家介绍的有关扭剪扳手详细的介绍,希望对您有所帮助.如果您有什么疑问的话,欢迎联系我们.我们将以的态度,为您提供服务
The above is a detailed introduction to the torque shear wrench. I hope it will be helpful to you. If you have any questions, please contact us. We will provide services for you with our attitude