Key points of using constant torque wrench all constant torque wrench shall be operated according to the operation instructions, and the key points are as follows:

1、按所需定力数值，选择相应的并经校验合格的定扭矩扳手，不准使用没有经过校验的定扭矩扳手；

1. According to the required torque value, select the corresponding and qualified constant torque wrench, and do not use the constant torque wrench without verification;

2、要用平衡、缓慢的力扭转扳手，不能急扭，手握住定扭矩扳手手柄中间点，垂直于扳手线拉动手柄，直到达到所要求的力矩为止，不允许随意手握根部和端点；

2. It is necessary to use balanced and slow force to twist the spanner. Do not twist it quickly. Hold the middle point of the handle of the constant torque wrench and pull the handle perpendicular to the wrench line until the required torque is reached. It is not allowed to hold the root and end points at will;

3、不要施加大于定扭矩扳手额定值的扭矩，不准用定扭矩扳手拆卸螺栓或螺母，定扭矩扳手只能顺时针转动；

3. Do not apply a torque greater than the rated value of the constant torque wrench. Do not use the fixed torque wrench to remove the bolt or nut. The constant torque wrench can only rotate clockwise;

4、用定扭矩扳手拧紧螺栓时，应尽可能不使用转接器，非用不可时，必须遵守下列要求：转接器有各种不同形状时，可合理选用；为减少拧紧力矩误差，转接器长度应小于定扭矩扳手长度；连接转接器时，其线应和扳手线成一条直线，若需要也可使用轴线偏移的转接器，但不超过15°角。

4. When tightening bolts with constant torque wrench, the adapter should not be used as far as possible. If necessary, the following requirements must be observed: when the adapter has various shapes, it can be selected reasonably; in order to reduce the tightening torque error, the length of the adapter should be less than the length of the constant torque wrench; when connecting the adapter, its line should be in a straight line with the wrench line, and if necessary, the axis offset rotation can be used Connector, but no more than 15 ° angle.

5、不允许将定扭矩扳手当做普通扳手使用，如用来拧松螺母或螺栓等；

5. Constant torque wrench is not allowed to be used as ordinary wrench, such as used to loosen nuts or bolts, etc;

6、右扭矩定扭矩扳手不能左旋，而左扭矩定扭矩扳手也不能右旋；

6. Right torque constant torque wrench can not be left-handed, and left-hand torque constant torque wrench can not be right-handed;

7、不能用镀铬的定扭矩扳手和转接扳手接触钛及合金制的螺栓或产品结构；

7. Do not use chrome plated constant torque wrench and adapter wrench to contact titanium and alloy bolts or product structure;

8、定扭矩扳手施加的扭矩不允许超过定扭矩扳手的额定扭矩值。

8. The torque applied by the constant torque wrench shall not exceed the rated torque value of the constant torque wrench.

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