Electric wrench refers to screw and unscrew the bolt and nut of electric tools, is a tool which is used to tighten the high strength bolts. Used in steel structure bridge, building, chemical industry, power generation equipment installation construction of large hexagon head high strength bolt twist, twist and twist at the beginning of shear type high strength bolt at the beginning of the screw, and torque and axial force of bolt fasteners have strict requirements of occasions. Electric wrench the product name of the type, application scope is also different. Below small make up to introduce the common electric wrench type. , impact wrench impact wrench cannot set torque, generally is a common screw fastening, or at the beginning of high strength bolts. It's very easy to use and is aimed at bolt pull (power switch. , set the torque wrench electric torque wrench may end up as well as at the beginning of tight tight, its use is to adjust the torque first, tighten bolt again. It can be set torque, general tighten large hexagonal high-strength bolts. , corner Angle to the electric wrench electric wrench main also belong to a kind of constant torque wrench, can be set rotation degrees, such as turn round nut degrees clockwise. Its use is to adjust the rotation degree first, and then tighten bolts. And angular Angle to the electric wrench electric wrench is a kind of special fastening bolt steel Angle part electric wrench, the use of it and electric principle of torsion shear wrench, applicable to steel beams, the space is little contact. , torsional shear wrench mainly torsional shear type high strength bolt, only torsional shear type high strength bolt. It is the use of bolt pulling power switch, until the torsional shear type high strength bolt wobbler interrupted.
