How to choose a torque wrench

A torque wrench is a wrench, generally divided into two categories: electric torque wrench and manual torque wrench. Its main feature is that you can set the torque, and the torque is adjustable.It is now more widely used electric torque wrench, which handle is generated when fatigue optimized ergonomic design, comfortable grip, greatly reducing the high intensity operations, according to the torque requirements for the use of the lock nut, when the precise set torque value reported hearing and a clear sound, and the handle can feel a slight vibration, easy to operate, saving time and effort.

Scope - Flange Separator

Flange separator is the separation of large industrial machinery equipment, divided into one hydraulic flange separator and the split flange separator. Mainly used for pipeline maintenance, replacement pipeline construction, testing and flanges, maintenance pads, pressure vessel, cylinder head open, power plants, bearing removal, electricity and oil drilling, rotor removal, offshore platforms, lifting work, shipbuilding, industrial equipment, horizontal movement of the workpiece and other industry sectors. Use it with the bolt tensioning tool is completely the opposite.

Hydraulic torque wrenches classification and distinction

Hydraulic torque wrench into the drive hydraulic torque wrench and hollow hydraulic torque wrenches. Drive hydraulic torque wrenches are driven by the drive shaft to achieve the appropriate size sleeve nut preload, under circumstances permitted as long as the torque range, according to replace the corresponding sleeve high strength bolts to complete different specifications for general purpose hydraulic wrench , wider scope. Hollow hydraulic torque wrench is equipped with a transition sleeve used only within the scope of its comparative bolt specifications required to use this hydraulic torque wrench to achieve the conditions, which is hollow hydraulic torque wrench has become a special customized hydraulic torque wrenches because it uses conditions, generally more screw sticking out of a long, relatively small spatial extent, double nut, bolt spacing is too small, nut and equipment wall is too small, or some specific sectors of the difficult working conditions.

Hydraulic cylinder works

The hydraulic cylinder is a hydraulic energy into mechanical energy, reciprocating motion to do (or swing movement) of one hydraulic tools. Use in hydraulic systems hydraulic cylinder drive mechanism has a certain quality, with great kinetic energy when the hydraulic cylinder is moved to the stroke end, the Failing deceleration, hydraulic cylinder piston and cylinder head to mechanical impact, an impact, noise, there is destructive. To mitigate and prevent such harm occurs, it can be provided in the hydraulic circuit deceleration device or in the cylinder equipped with cushioning devices.

The cautions of the torque wrench calibration tool

The torque wrench calibration tool for high precision products, for this, please note:

1. Do not strongly in the use of impact;

2. Absolutely cannot be used as a hammer, tap on a workpiece;

3. Spanner alarm do not continue to work after;

4. Before use, please check if the arrow on the wrench with power works in the same direction, if not consistent, please install the rotate for 180 degrees to wrench;

5. Please remove the wrench parts, lest destroy the precision influence use;

6. torque wrench testers, after use, should be placed torque value to zero, to keep the wrench precision, prolong service life;

The use of the Square Drive Hydraulic Torque Wrenches

1. Set the Square Drive Hydraulic Torque Wrenches value;

A. the lock handle counterclockwise, loosen the adjusting wheel.

B. turn the adjustment wheel, causes the main scale and vice scale (round adjustment scale) value is equal to the sum of what you need to set torque value.

C. after torsion value setting, spin clockwise to lock tight grip, torque value after work.

2. Spanner Fang Sun set into the corresponding size of the sleeve;

3. The sleeve set into the nut or bolt head;

4. Uniform power works clockwise;

5. When they hear "clicking" sound, or feel wrench has unloading force feeling, I have to set hydraulic torque wrench chart value;

6. When you long screw bolt or tubing type of nut, sleeve, without zai-shallow pits method work at this point, the need to replace a verbal;

A. press positioning pin, along the direction of force applying, wrench head is desirable.

B. will choose corresponding size of the open after oral insert the wrench screw rotation, can make catapults dowel pin holes in a wrench head positioning.

dial indicator torque wrenches

dial indicator torque wrenches has the preset torque value and sound device. Use, first set a maximum torque, torque reaches the set value when, Mechanical Torque Wrenches "tower" noise or wrench joint bending Angle, at the same time companion has apparent handle vibration, it's representatives have tighten don't strength again, prompt to complete the work. After lifting force, wrench the relevant parts can be reset automatically.