the Features of impact socket set

Although the concave shape of the impact socket set the same, but the outside diameter, length and other equipment for the corresponding shape and size of the design, the state is no uniform requirement, can be used with a wide range of torque wrenches with, so the impact of the sleeve design relatively flexible, to meet the needs of the public.
First, the use of advanced chrome - molybdenum steel, more resistant to wear, long life
Second, forging molding, reasonable hardness, high impact resistance
Third, through multiple heat treatment process, the organization is reasonable, uniform hardness
Fourth, high precision, reduce screw wear

Torque screwdriver functional principle

torque screwdriver is also called torque screwdrivers, popular understanding is that there screwdriver torque value. There are two main preset torque screwdrivers, Analog (dial) torque screwdriver commonly used. When the preset torque screwdriver can be preset torque value, when the fastener is screwing torque reaches a predetermined value, the screwdriver inside the automatic clutch is disengaged, issued a "despair, despair, despair ..." sound, and this action can be felt by hand. In this case, even if the operation was continued urging, will not exceed the limit set in advance. Coupling quality torque screwdriver fasteners directly affect the various instruments, using quality electrical and
mechanical equipment, household appliances and other products to the reliability of these products.

Hydraulic torque wrenches classification

Hydraulic torque wrenches have driven hydraulic wrench and hollow hydraulic wrench two series. As the name suggests, the drive hydraulic torque wrenches are driven by the drive shaft corresponding specifications impact socket set to achieve preload nut, lower torque range as long as the circumstances permit, according to replace the corresponding sleeve high strength bolts to complete different specifications for general purpose hydraulic wrenches, a wider scope. Hollow hydraulic torque wrench is equipped with a transition sleeve use. Generally screw sticking out a long, relatively small spatial extent, double nut, bolt spacing is too small, nut and equipment wall is too small, or more difficult conditions some specific industries.

Hydraulic Nut Splitters

Hydraulic Nuts Description:
Locking and separation is the common thread of torque generated by the rotation torque wrench to use the friction between the locking screw and separation. For large diameter threaded connection, affected manpower, tools and work space, its preload failed to reach the design requirements, so it is easy to loose the vibration occasions. Hydraulic Nut Splitters completely changed the traditional way of tightening the locking torque axial tensile locked by means of ultra-high pressure pump power, the threaded screw axially elongated elastic material itself will use thread lock so the hydraulic nut has a very high capacity and unique preload can synchronize multiple sets of bolt tightening achieve the same preload notable feature gradually been widely used in various industries. Hydraulic nuts are mainly used frequently disassembly or axial top tight bolted on various occasions, preload and locking requirements, and as a hydraulic interference fit coupling disassembly tools.

The Use notes and Caution of hydraulic jack

Hydraulic jacks Caution:
1. When using a hydraulic jack, you should first try to jack up the first part of the weight, carefully check the hydraulic jacks without exception, and then continue lifting heavy objects. If it is found after the compression plate is not flat, not solid or hydraulic jacks tilt
2. Be sure to return the hydraulic jacks relief, after timely deal before operating again.
3. In the lifting process, should be at the bottom of the hydraulic jacks Insurance sleepers bedding planes with increasing weights to prevent hydraulic jacks tilt or cause a sudden drop in the piston and causing the accident, should be gradually withdrawn when the decentralization of heavy sleepers out, the distance between the sleepers and heavy sleepers shall not exceed the thickness of the piece, to prevent accidents!
4. If the weight exceeds the lifting height required hydraulic jacks rated highly, you must first hydraulic jacking weights underlying good sleepers, lowered hydraulic jacks, padded bottom, repeated lifting, until the desired lifting height
5. Hydraulic jacks can not be used as a permanent bolt tensioner tool. For a long time support, should increase support portion beneath the weight, in order to ensure that the hydraulic jack from damage.
6. If lifting weights with only one end of a hydraulic jack, hydraulic jack should be placed on the axis of symmetry of the weight, and hydraulic jacks consistent base length direction and the direction of the weight and easy dumping. If the heavy end of the use of two hydraulic jacks, and the direction of the base should be slightly splayed symmetrically placed on both sides of the axis of symmetry weights.
7. Use two or more hydraulic jacks simultaneously lifting operations shall be unity of command, coherence, while lifting.
8. A hydraulic jack should be stored in a dry, dust-free place, unsuitable for acid-base, workplace corrosive gases, but not on the outside sun and rain!

Features bolt tensioners

Bolt tension elongated bolt directly using pure tension, shear and lateral force without twisting, to join the contact surface without friction damage, it is the best way to precisely control bolt preload. Than is responsive, accurate, no torsional stress, no friction damage, can synchronize multiple bolt preload hydraulic torque wrenches, bolt tensioners advantages; therefore bolt tension preload in more stringent requirements for the occasion applied more widely. The disadvantage is the need to have sufficient elongation, and thus narrow axial space is very limited occasions.

Role of hydraulic bolt tensioners

Hydraulic bolt tension referred hydraulic tensioners, the role of its dynamic components of the original motivation of the mechanical energy is converted into fluid pressure energy, it refers to the hydraulic system of pumps, hydraulic bolt tensioners to provide power to the mechanical energy of a fluid hydraulic pumps transformation. Acting hydraulic bolt tension power components of the original motivation of the mechanical energy is converted into fluid pressure energy, it refers to the hydraulic system of pumps, which provides power to the entire hydraulic system.

Torque wrenches required verification or calibration it

All professional measuring tools in factories and enterprises, including torque tools, before use to measure local hospital for testing, if the local metrology department without qualification, it is necessary to specify other cities to detect this type of torque tools, especially in the machinery manufacturing and automobile manufacturing as an important actor, and this tool is to be conducted annually detection. Torque wrench calibration in two ways:
1. Please seller before buying tool to help you detect, will cost added to the inside
2. alone detection

Hydraulic Torque Wrench Calibrators

Control flange flatness and introversion degree

flange alignment tools used by the positioning device and the locking device consisting of a flange alignment to determine the positioning hole, flange heating has the following three
1. flange with flame varus correction using a linear heating methods. About the width of the linear heating should not be too large, and generally plate thickness of 0.5 to 2 times the depth of the heating plate is 1/2 to 2/3 plate thickness
2. Flame straightening barrel distortion and flange generally use dot heating manner during deformation. Spot focus point is heated at a heating, roasted torch circular motion, so as not to exceed the maximum temperature
3. Generally triangular linear heating and heating with a flame straightening  T type flange flatness

Instructions on the use of the electromagnetic valve electric pumps

A. in the use of the electromagnetic valve electric pumps, first of all, according to the requirement of the measurement of workpiece, selecting moderate range torque wrench, torque values measured is less than twenty percent of the torsion device in use range, should not be too great A range for small torsion part of reinforcement, small range of torsion is less can outrange that;

B. when using hydraulic flange spreader, wrench square tenon connection first good auxiliary accessories (e.g., sleeve, all kinds of batch of mouth), ensure that the connection has no problem. Before strengthening torsion, set need reinforcement force value, and lock the lock device, adjust direction switch knob to the strength of the direction, then when use fast for 5 to 6 times in a row, first make a wrench on the internal components special lubricant can sufficient lubrication, make more accurate torque wrench, durable use.

The characteristics of hollow hydraulic wrench

Hollow hydraulic wrench hydraulic torque wrench force in a series, it has its own unique characteristics
1. The use of ultra-high-strength light metal, thin design, double-acting, high-speed, large angle
2. Snap-in, interchangeable plug-in, without special tools, torque repeatability up to ± 3%
3. The full range of rotary hose connectors, suitable for compact occasions convenient positioning
4. wrench full member strength design, the overall reaction arm, fewer moving parts, durable, reliable
5. scalable metric, British hex plug and socket, a power head can be realized simultaneously with multiple plug-ins

The structure of the torque wrench

hydraulic flange spreaders is also called the torque meter, torque screw whorls. It is the theory of beam bending, torsion bar

Principle of bending and compression principle of helical spring, designed to measure the effect on the nut torque size. flange alignment tools with a long elastic rod, the end with a handle, the other end with a square or hexagon head, in a square or hexagon head suit a replaceable sleeve, with steel ball stuck. Also equipped with a long pointer on the top. Scale plate fixed to the handle seat, each grid scale value is 1 n (or kg/m). Before use, first will be installed in the indicator on the wrench to adjust to the required torque, then throw a wrench, when reach the predetermined torque, indicator pointer will turn to pin a party, the last pointer to collide with the pin shaft, through sound signal or sensing signal to inform the operator.

Torque wrench

hydraulic torque wrench chart moment is the product of the force and distance, when the thread fasteners such as fastening screw bolt and nut torque size need to control, to ensure the thread fastening and not because of destruction of the torque wrench calibration tool is too large, so use the torque wrench to operate. First set a maximum torque, torque reaches the set value when, wrench "card tower" noise or wrench joint bending Angle, this is already tightening torque.

Hydraulic bolt tensioners matters needing attention

This product is a high precision products, when used to remind you:

1, hydraulic bolt tensioners in use should avoid knock against, and fall;

2, it is strictly prohibited to knock and collision with sharp hard objects display area;

3 and applying pressure should be smooth, absolutely more than detection range of use;

4, long-term outage Square Drive Hydraulic Torque Wrenches should remove the battery to prevent battery leakage;

5, it is forbidden to use strong solvents (such as benzene, nitro) wipe the panel and the display area;

6, beware of liquid into the wrench, lest damage electronic components;

7, when the battery voltage to can't work, should replace the battery;

8, it is strictly prohibited to free disassembly, lest affect accuracy, if encounter problems, please contact the manufacturer or seller.

9, after using this product should be put back in box;

10, calibration method is only for reference calibration, other people do not move;

11, the product from the date of sale and a half years, in normal use, the non-artificial factors resulting in failure of the products belong to the warranty scope;

The torque wrench testers

torque wrench testers, is a test instrument for checking various 100ton hydraulic jacks. The instrument adopts single-chip microcomputer control technology and the high precision torque sensor and bearing bracket, etc. Its test precision, stable performance, feature-rich, easy to operate. Method of the instrument in accordance with Confucianism in the industry leading technology, the indicators to achieve the domestic first-class level, is a high performance testing instruments, has been widely used in electric power, light industry, machinery, engines, internal combustion engine, electric cars, motorcycles, cars, ships, aircraft and other manufacturing industries and metrological testing department.

The structure of the hydraulic torque wrench chart

hydraulic torque wrench chart is also called the torque meter, torque screw whorls. It is the theory of beam bending, torsion bar

Principle of bending and compression principle of helical spring, designed to measure the effect on the nut torque size. torque wrench calibration tool with a long elastic rod, the end with a handle, the other end with a square or hexagon head, in a square or hexagon head suit a replaceable sleeve, with steel ball stuck. Also equipped with a long pointer on the top. Scale plate fixed to the handle seat, each grid scale value is 1 n (or kg/m). Before use, first will be installed in the indicator on the wrench to adjust to the required torque, then throw a wrench, when reach the predetermined torque, indicator pointer will turn to pin a party, the last pointer to collide with the pin shaft, through sound signal or sensing signal to inform the operator.

The working principle of hydraulic bolt tensioners

 hydraulic bolt tensioners card tower sound principle is very simple, can be divided into the following steps to understand:

1, Square Drive Hydraulic Torque Wrenches is prompt after issued a "tower" sound has reached you claim on the torque value;

2, "tower card" is issued by a torque wrench by itself of the internal structure of torque to release them to release the joint structure is divided into spring pressure, torque, torque of plunger, three structure.

3, first on the torque wrench set the required torque value (from the spring set on the plunger to the torque pressure release joints), locking torque wrench, began to tighten the bolt. When the bolt to the torque value (when using torque greater than the pressure of the spring), will produce instant effect between. At the moment have a disconnect effect issued a joint percussion, wrench metal case of "tower" sound. Thus to confirm be reminded torque values (as we arm joints bend in iron pipe into 15 degrees will encounter after the "straight steel tube principle as a fraction of a second).

The above is the most commonly used manual torque wrench, there are electric torque wrench, pneumatic torque wrench and so on.

dial indicating torque wrench

dial indicating torque wrench is also called the torque wrench, torque wrench or torque wrench, torque is the product of the force and distance, when the thread fasteners such as fastening screw bolt and nut torque size needs to be controlled, to ensure that the thread fastening and not because of destruction of the torque is too large, so use the torque wrench to operate. First set a maximum flange alignment, torque reaches the set value when, wrench "card tower" noise or wrench joint bending Angle, this is already tightening torque.

dial indicator torque wrenches

dial indicator torque wrenches is also called the torque wrench, torque is the product of the force and distance, when the thread fasteners such as fastening screw bolt and nut torque size needs to be controlled, to ensure that the thread fastening and not because of destruction of the torque is too large, so use the Mechanical Torque Wrenches to operate. First set a maximum torque, torque reaches the set value when, wrench "card tower" noise or wrench joint bending Angle, this is already tightening torque. Torque wrench can be divided into: preset torque wrench, 

Construction of calibration of torque wrenches

Camshaft is a cylindrical rod of the same length with the cylinder group.Above there are several cam, used to drive the valve.Camshaft bearing at one end, and at the other end is connected to the drive wheels.
Side of the cam is egg-shaped.calibration of torque wrenches design goal is to ensure that the cylinder sufficient intake and exhaust, specifically, in the shortest possible time in the valve opening and closing action.Taking into account the durability and smooth operation of the engine, valve or the deceleration during opening and closing movements too much impact, otherwise dial indicating torque wrenches will cause severe valve wear, noise, or other serious consequences.
Generally inline engine, one cam per valve, v engine or a horizontally opposed engine is one cam per two valves share.Rotary engine and valve valve engines due to their special construction, does not need the cam.

Torque wrench calibration, week

1. Hexagon reducer bushes in accordance with JJG707-90 of the torque wrench calibration procedures.Refer to torque wrench torque wrench accuracy test results with a torque wrench setting of deviation.Repeatability means the same torque wrench on the same conditions, hydraulic torque wrench chart detected the same torque value, the consistency of the test results.Prevailing torque wrench accuracy of 4%, torque wrench is detected, more than 4% the scope of errors depending on the torque wrench.Torque Wrenches out there are two main reasons: ⑴ torque wrench mutations (jam or poor repeatability).Because of the torque wrench and high frequency of use for a long time, internal parts subject to wear, deformation, resulting in torque mutations.

⑵ excursion of the torque wrench.Passed due to torque wrench measures rely on springs, in frequent use, can produce some drift.(Drift refers to the actual testing of torque wrench error with the torque wrench setting value)
2. refers to the day in the week just before using a torque wrench to the torque wrench settings for testing and understanding of the torque wrench.Due to the torque wrench after frequent use and are prone to drift, it should verify that the torque wrench before starting the work week, check the status of a torque wrench and adjust the drift, ensure the accuracy of the torque wrench.

Torque wrench use

When the torque is applied, hand preset torque screwdrivers the tick mark locations in the middle of the handle.Square head and sleeve, nut/bolt secure connections (for opening/plum series Low Profile Torque Wrench, open/ring ends should be fully inserted into the sink/nut), the force only in the direction of the torque wrench marked,

Torque wrench setting adjusted to roughly 2 forms:

One, belonging to the adjustable screw driven loading calibrators adjustment method.Loosen the rear lock clamps according to the needed value benefits at the end of indexing wheel (clockwise increases the torque, counterclockwise to reduce torque) the index wheel scale consistent with the torque wrench setting torque wrench calibration device calibration.
Second, belongs to the set-value hydraulic torque wrench testers adjustment.Release the rear cover the corresponding Allen key loosen the locking screw adjusting tool to rotate the push ring setting torque values torque Tester calibration torque fixed locking screw locked back cover

Torque wrench with torque process and structure

With torque wrench calibrator imposed torque Shi, through and torque wrench of ratchet head solid connection of sleeve connection need imposed torque of nut/bolt, hand master in portable torque wrench calibrators handles Shang of effective scale line, Shun clockwise or inverse clockwise Afterburner, this force led nut/bolt, dang nut/bolt tight solid, and by with of torque and torque wrench set of torque equal Shi, torque wrench of ratchet led torque wrench of head, put torque passed to triggers, triggers to right sliding (unloading force).When the roller getting tube, will issue a "clicked" signal, stop immediately after you hear the signal strength, remove the torque wrench to complete torque.

Torque wrench calibration procedures

1. calibration of torque wrenches preparations
1.1 before the first use of the torque meter is fixed on the wall or on a level platform;
1.2 the torque meter power cable connected to the 220V power supply, turn the power switch on, Preheat for 20 minutes;2. periodical calibration
2.1 types of hydraulic torque wrench manufacturers time is 6 months;2.2 dial torque wrench
2.2.1 under be liable to join square drive wrench, choosing the right connection head insert the sensor hole, normal, peak torque meter switch to normal, torque meter track display function, rotate the zero potentiometer to zero point, fitted tested wrenches (should be zero before zero adjustment wrench insert).Note: after you insert the wrench, torque meter displays a certain value before without Afterburner, this value is generated by the wrench weight, can no longer be eliminated;

2.2.2 holding the handle of the wrench parts along the vertical direction flipping the wrench, uniform testing three points observation point by point the torque of the torque meter shows values and repeat 3 times.According to the following formula to calculate the present value relative errors (Q) and the relative variation in the indicating value (b), and fill in the result in the torque wrench calibration log sheet: q = (m – m) x100%
B=(Mmax―Mmin)×100%
In the formula: M-----testing torque value m---three times displays arithmetic mean Mmax----torque maximum torque Mmin----test display test three times three times display the minimum torque 2.2.3 calibration determination
2.2.3.1 the absolute value in Q and the b value ≤ 10% ≤ 10%, the torque to normal use;
2.2.3.2 Q the absolute >10% or b >10% should repair the torque wrench adjustment under the circumstances;Still not up to the required torque wrench adjusted scrap should be given;

The principle of Torque Wrench

Torque Wrench - also called Torque Wrench or torque wrench, torque is the product of force and distance, when fastening screws threaded fasteners, such as bolts and nuts need to control the size of the torque applied to ensure that the thread tight and not because of the torque is too large thread damage, so use a torque wrench to operate. First, set the upper limit of the value of a good torque required when the applied torque reaches the set value, the wrench will be issued, "Cartagena" sound or a little wrench junction bend angle, which representatives have tightened do not add capacity.

Works

Principle torque wrench issued Kata sounds very simple, can be divided into the following steps to understand:
1,A torque wrench is issued, "Cartagena" sound is prompted you have reached the required torque value up.
2, "Catania" is released by its own internal structure of the torque produced, which structure is divided into a pressure spring, the release of the joint torque, a torque wrench torque ram three structures composed emitted.
3, the first set on the torque wrench required torque value (set by the spring torque on the plunger to release the pressure on the joints), locking torque wrench, tighten the bolts began. When the bolt reaches the torque values ​​(greater than when using a torsion spring pressure), it will produce an instant effect disjointed. Issued a joint percussion, "Cartagena" sound emitted by metal wrench instantly produce disjointed effect. Thus to achieve torque values ​​confirm the reminder (in fact, as we have a 15 degree bend arm joints on iron tube encounter straight pipe after the instant application of the same principle).
Mentioned above are the most commonly used manual torque wrench, in addition to electric torque wrenches, pneumatic torque wrenches.

Structure

Torque wrench, also known as torque, torque screwdriver. It is based on the principle of beam bending, torsion and bending principle coil spring compression principle and design, can measure the torque acting on the nut size.
There are flat-type torque wrench and dial two. Torque wrench has a long elastic rod, which is filled with a handle at one end and the other end is equipped with square head or hex head, square head or hex head in an interchangeable sleeve suits, stuck with the ball. In the top end is also equipped with a long pointer. Scale plate fixed to the handle base, each grid scale is 1N (or kg / m). Before use, the first indicator mounted on the wrench is adjusted to the desired torque, and then pulling the wrench, when the predetermined torque is reached, the pointer indicator on the pin will be rotated to one side, and finally the pointer collisions with pin to inform the operator through speaker signal or sensor signal.

The meaning of torque

The material generated during torsional deformation force is applied, the unit N · m. When torsional rigidity or torsional modulus and other mechanical measuring material when to reverse the dynamic mechanical properties of materials testing methods, are required torque applied to the specimen. Especially in many dynamic mechanical measuring instruments, as relatively easy to achieve free oscillations or forced oscillation of torque applied to the form, so the use is more widespread. Such as Wiggler analyzers, twisted braid analyzers, such as rotational rheometer torque is applied to the sample.

The so-called Torque is an object of the reaction by the axial force and torsion, commonly used to measure torque wrench, the unit is Nm. Common torsion
Force objects have screw nut drive shaft and so on.

The so-called "torque" in physics should be called "torque" because the results of many rumors, we say that a "torque", also handed down since then, as the guide straight. The concept of torque from the elementary school's "lever principle" to explain over the definition of a "vertical force multiplied by the distance from the center of rotation", metric units of Newton - meters (Nm), divided by the acceleration due to gravity 9.8m / sec2 After that, the unit can be converted to the people familiar with the kilogram - meter (kg-m). Imperial units, compared with pounds - feet (lb-ft), in the United States is more common car catalog, to be converted into metric, as long as the digital divide lb-ft to 7.22.

Torque units and conversion

"Torque" in physics should be called "torque", "turning moment" is the object by the moment an object rotation direction of the cut to the force generated when, commonly imported products are torque wrench (now also in the domestic setting factory assembly), torque approved (torque screwdriver), torque meter, electric screwdriver torque tester, cap torque tester to measure. Because the result of many rumors, we say to "Torque."
Simply torque = force multiplied by the arm. For example, arm (i.e. wrench) long 1M, 100N of force is applied, the torque is 100N.m. The concept of torque from the elementary school "lever principle" to explain too, is defined as "the force multiplied by the vertical distance between the center of rotation." After the international common metric units of Nm Nm, divided by the acceleration due to gravity 9.8m / sec2, units can be converted into people familiar kgf. M kgf.m or kgf. Cm kgfNaN. Imperial units, compared with pounds. Ft lb.ft, to convert to metric, as long as the digital divide 7.22 lb.ft can.