When installing the high-strength bolt in the torsion hole, it is not allowed to strike the high-strength bolt by force. When the bolt cannot be penetrated freely, it is not allowed to use gas cutting to ream the hole. It is necessary to use a cutter to ream the hole. When repairing the hole, it is necessary to make the plate layer close to each other to prevent iron chips from entering the plate seam. After reaming, it is necessary to use a grinder to remove the burr at the edge of the hole and iron chips.

初拧紧固到螺栓标准轴力(即设计预拉力)的60%～80%，初拧的扭矩值不得小于终拧扭矩值的30%。从接头刚度大的地方向不受约束的自由端进行。

The initial tightening shall be 60% - 80% of the standard axial force (i.e. design pretension) of the bolt, and the initial tightening torque shall not be less than 30% of the final tightening torque. From the place with large joint stiffness to the free end without restraint.

电动扭剪扳手主要是终紧扭剪型高强螺栓的，它的目的是把扭剪型高强螺栓的梅花头剪断即可，工作时将扳手头对准螺栓头，扣动开关即可开始工作，几秒后，螺栓梅花头将被扭断，然后抽出扳手扣动扳机将梅花头弹出，这样就紧固好扭剪型高强螺栓了。

The electric wrench is mainly used to tighten the high-strength bolt. Its purpose is to cut the box head of the high-strength bolt. When working, align the wrench head with the bolt head and pull the switch to start working. After a few seconds, the box head of the bolt will be twisted. Then pull out the wrench and pull the trigger to eject the box head, so as to fasten the high-strength bolt.

电动扭剪扳手的特点：

Features of electric torsion wrench:

1、整机体积小、重量轻，操作方便，并且可以在狭小空间使用

1. The whole machine is small in size, light in weight, easy to operate, and can be used in a small space

2电动扭剪扳手采用德国进口电机，功率大，体积小，扭剪速度快，可明显提高劳动效率

2. The electric torsional shear wrench adopts the motor imported from Germany, which has the advantages of large power, small volume, fast torsional shear speed, and can obviously improve the labor efficiency

3、使用寿命长，采用高品质原材料，数道加工工序，加特有的热处理技术及车床加工技术，生产出的产品使用寿命长。

3. Long service life, using high-quality raw materials, several processing procedures, plus the unique heat treatment technology and lathe processing technology, the product has a long service life.

4、耐撞击性强，采用优质原材料，坚固耐用

4. Strong impact resistance, using high-quality raw materials, durable

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