扭力扳手的选择

　　Selection of torque wrench

　　怎么来选择好的扭了扳手，根据扭力值的不同，请选择不同的扭力扳手，我们建议用户在购买时选择扭力值区间在扭力扳手的中间部位，即20%-80%扭力区间，例如我们在用100Nm的扭力去锁紧螺丝时候，我们建议选择HAZET的5122-3CT扭矩范围是40-200Nm，这样里面弹簧结构不会经常触即临界点，更好的保护扭力扳手，并能长期使用。

　　How to choose a good torque wrench? According to the different torque values, please choose different torque wrenches. We recommend that users choose the torque value range in the middle of the torque wrench when purchasing, that is, the 20% -80% torque range. For example, when we use 100Nm of torque to lock the screw, we recommend choosing HAZET's 5122-3CT torque range of 40-200Nm, so that the spring structure inside will not frequently touch the critical point, better protect the torque wrench, and can be used for a long time.

　　1. 为什么要选用扭力扳手来锁螺丝，而不是拆螺丝

　　Why choose a torque wrench to lock screws instead of removing them

　　扭力扳手与其说是一种工具，更适合说是一种量具，一般的螺丝我们可以用棘轮扳手或者普通扳手来拆装即可，使用的力是根据个人的力量大小决定螺丝的锁紧程度，而机械设备等比较重要的部位螺丝，需要一定的扭力值才能达到适合，即不会损坏螺丝又保证使用需要；拆卸螺丝的时候，会有瞬间强力，即使新装的螺丝，然后拆卸下来，这个松动力量远大于刚安装的扭力，很容易造成扭力扳手的损坏。

　　A torque wrench is not so much a tool as a measuring tool. Generally, we can use a ratchet wrench or a regular wrench to disassemble and assemble screws. The force used depends on the individual's strength to determine the degree of locking of the screw. However, screws in important parts such as mechanical equipment require a certain torque value to achieve the most suitable value, which will not damage the screw and ensure the use needs; When disassembling screws, there will be an instant force. Even if a new screw is installed and then removed, the loosening force is much greater than the maximum torque of the newly installed one, which can easily cause damage to the torque wrench.

　　2. 扭力扳手精准再校正

　　2. Precise recalibration of torque wrench

　　扭力扳手与汽车都是一样，行驶一定里程，使用一段时间后，都需要保养，扭力扳手在使用达到规定次数或者时间后，一般是5000次或者半年，需要进行扭力精准再校正，需要由人员使用设备调节校正，延长扭力扳手的寿命就必须要注意：每次用完后将扭力值归零，以免弹簧长期受压，弹性疲乏，导致扭力扳手寿命缩短。

　　A torque wrench is the same as a car. After driving a certain mileage and using it for a period of time, it needs maintenance. After using the torque wrench for a specified number of times or time, it is usually 5000 times or half a year, and it needs to be calibrated accurately. It needs to be adjusted and calibrated by professionals using professional equipment. To extend the service life of the torque wrench, it is necessary to pay attention to resetting the torque value to zero after each use, in order to avoid long-term compression of the spring, fatigue of the elasticity, and shorten the service life of the torque wrench.

　　扭力扳手常规维护

　　Routine maintenance of torque wrench

　　若达到预设扭力，又继续施压时会造成工作物受到伤害。

　　If the preset torque is reached and pressure is continued, it will cause damage to the workpiece.

　　设定扭力值之前，需检查扭力扳手是在锁定或者解锁 也就是LOCK OR UNLOCK的状态。

　　Before setting the torque value, it is necessary to check whether the torque wrench is locked or unlocked, that is, in the LOCK or UNLOCK state.

　　一般来说扭力扳手在出厂时，已经校正及测试，不同款式精准度不同，任意扭力值点分别为±4%，±3%，±1%，这是高精确测量仪器，因此仅有人员才可作维修，切勿浸泡在任何液体中，否则会影响其内部的润滑。

　　Generally speaking, torque wrenches are calibrated and tested before leaving the factory. The accuracy varies depending on the style, with any torque value point being ± 4%, ± 3%, ± 1%. This is a high-precision measuring instrument, so only professionals can perform repairs. Do not immerse them in any liquid, otherwise it will affect their internal lubrication.

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