The calibration method of torque wrench is as follows:

1、设定扭矩值

1. Set torque value

旋转松紧器（左转）

Rotary tensioner (left turn)

旋转副刻度，调整扭矩值（主刻度+副刻度）

Rotate the sub scale and adjust the torque value (main scale + sub scale)

旋转锁紧器（右转）（锁紧时，如果销钉接触锁紧器，应该变销钉位置）

Rotate the lock (turn right) (if the pin contacts the lock during locking, the pin position should be changed)

例：将扭矩值设定为42N.M。

Example: set the torque value to 42N. M.

转动副刻度的度盘，直至主刻度指向40。主刻度为40后，将副刻度对准2（主刻度的值会像时钟的短针和长针那样与副刻度连动）

Turn the dial of the sub scale until the main scale points to 40. After the main scale is 40, align the sub scale to 2 (the value of the main scale will be linked with the sub scale like the short needle and long needle of the clock)

2：设定扭矩后，将套筒插入方形驱动头。

2: After setting the torque, insert the sleeve into the square drive head.

3：将套筒套在螺栓头部或螺母上

3: Put the sleeve over the bolt head or nut

4：将扭力扳手向右转动进行紧固。

4: Tighten the torque wrench by turning it to the right.

5：听到“咔嗒”声后，紧固结束。

5: After hearing the "click", the fastening is completed.

扭力扳手的简介：扭矩扳手又叫电动力矩扳手、扭力扳手、扭矩可调扳手，是扳手的一种，一般分为三类：手动力矩扳手、气动扭力扳手和电动力矩扳手。定扭扳手广泛用于对拧紧工艺有严格要求的装配线，使产品各个紧固件扭矩值一致，生产出来的产品质量有保障。

Introduction to torque wrench: torque wrench is also called electric torque wrench, torque wrench and torque adjustable wrench. It is a kind of wrench, which is generally divided into three categories: manual torque wrench, pneumatic torque wrench and electric torque wrench. Fixed torque wrench is widely used in assembly lines with strict requirements for tightening process, so that the torque value of each fastener of the product is consistent, and the product quality is guaranteed.

扭力扳手的使用注意事项：

Precautions for use of torque wrench:

1、使用扭矩扳手时，应平衡缓慢地加载，切不可猛拉猛压，以免造成过载，导致输出扭矩失准。在达到预置扭矩后，应停止加载。

1. When using the torque wrench, it shall be loaded slowly and balanced, and it shall not be pulled and pressed violently, so as to avoid overload and inaccurate output torque. After reaching the preset torque, the loading shall be stopped.

2、不能使用预置式扭矩扳手去拆卸螺栓或螺母。

2. Do not use a preset torque wrench to remove bolts or nuts.

3、严禁在扭矩扳手尾端加接套管延长力臂，以防损坏扭力扳手。

3. It is forbidden to add a sleeve at the end of the torque wrench to extend the force arm to prevent damage to the torque wrench.

4、根据需要调节所需的扭矩，并确认调节机构处于锁定状态才可使用。

4. Adjust the required torque as required and confirm that the adjusting mechanism is locked before use.

5、预置式扭矩扳手使用完毕，应将其调至小扭矩，使测力弹簧充分放松，以延长其寿命。

5. After the preset torque wrench is used, it shall be adjusted to a small torque to fully relax the force measuring spring, so as to prolong its service life.

6、应避免水分侵入预置式扭矩扳手，以防零件锈蚀。

6. Avoid moisture intrusion into the preset torque wrench to prevent parts from rusting.

7、所选用的扭矩扳手的开口尺寸必 须与螺栓或螺母的尺寸相符合，扳手开口过大易滑脱并损伤螺件的六角，在进口汽车维修中，应注意扳手公英制的选择

7. The opening size of the selected torque wrench must be consistent with the size of the bolt or nut. If the opening of the wrench is too large, it is easy to slip off and damage the hexagon of the screw. In the maintenance of imported vehicles, attention should be paid to the selection of metric and British system of the wrench

8、各类扳手的选用原则，一般优先选用套筒扳手，其次为梅花扳手，再次为开口扳手，选活动扳手。

8. For the selection principle of various wrenches, socket wrenches are generally preferred, followed by box wrenches, open-ended wrenches and adjustable wrenches.

9、为防止扳手损坏和滑脱，应使拉力作用在开口较厚的一边，这一点对受力较大的活动扳手尤其应该注意，以防开口出现“八”字形，损坏螺母和扳手。

9. In order to prevent the wrench from being damaged and slipping, the pulling force shall act on the thicker side of the opening, which shall be paid special attention to the adjustable wrench with large force, so as to prevent the "eight" shape of the opening from damaging the nut and wrench.