JB-300B Semi-automatic impact testing machine

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Product Description:

Main functions:

   The machine can be used for the determination of anti-impact performance of metal materials when it is under dynamic loading, thus judged the quality of materials under dynamic loading. It is applicable for the laboratory, which does continuous compact tests, metallurgy, machinery manufacturing, and other industries.

Product features:

   The machine with the semi-automatic control, operates easily and efficiently. It uses the electric control the knife of impact to raise, impact and fall. Moreover, the machine can use the remaining energy to raise and fall to prepare the next test automatically after thrusting specimens.

Main technical specifications:

Impact energy(J):  300
Impact speed:  5.2m/s          
Raising angle of pendulum:  150°
Span of support (mm):  40
Round angle of support:  R1.0-1.5mm  
Round angel of impact knife:  R2.0-2.5mm
Distance between pendulum center and impact point(mm):  750
Dimension of sample(mm):  10×10×55  
Power supply:  380V±10%50Hz  
Overall dimension(  L×W×H)mm:2124×600×340
Weight:  450kg

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Q:Function of electric contact pressure gauge
The upper and lower pressure can be set, the upper limit is reached, the power failure is stopped, the lower limit is lowered, the self starting voltage is raised, and the inner pressure is kept automatically in this range.
Q:What is the maximum allowable error of a precision pressure gauge of 0.4? How to calculate?
Maximum allowable error = + (range *0.4%)You can't tell the method of calculation only if you don't know the scale of your watch.
Q:Will the air compressor inspection (pressure gauge, safety valve, gas tank) is where to go to detect, how much is the approximate cost?
The safety valves go to the local Quality Supervision Bureau at the municipal level, and they will designate a place for you to check.Pressure gauge local measuring instruments inspection qualification institutions, general provincial and municipal metering Inspection Institute on the line.The cost will be determined according to the size of the safety valve. The 30 yuan of the path 25, the 32 yuan of the 60, the short checking time, and the half hour there (if no one goes there), the inspection report may take about 1 weeks.
Q:What's the function of the oil pressure gauge? Where does it fit?
For the vibration of the pump outlet, where the pressure meter for proof
Q:What is a pressure gauge and how to make it?
1. Pressure gaugeRefrigerant leakage is a common fault of air conditioning, refrigeration for dose adequacy of detection system, used to the pressure gauge, pressure gauge is a commonly used detection tool of freon refrigeration system, its shell diameter from 60mm to 250mm, a variety of specifications, suitable for air conditioner refrigeration system using a vacuum pressure gauge range to -0.1mpa 2.5MPa, as shown in figure 2-33,The pressure gauge and three way valve repair often supporting the use of clockwise three pass valve knob can make the valve repair, narrow hole, knob clockwise end, corresponding with the outdoor unit piping gas cut off, counterclockwise rotation knob, valve hole expansion, corresponding piping and outdoor group gas conduction, refrigeration system and the three way valve repair pressure gauge has been conducted, has nothing to do with the knob, together with three pass valve repair switch, can realize vacuum pumping, refrigerant filling and test pressure of the refrigeration system, etc..
Q:What's the basis for the inspection of the safety accessories (safety valve and pressure gauge) of the simple pressure vessel?
(1) the maximum working pressure is greater than or equal to 0.1MPa; (note 1-2)(2) the product of work pressure and volume is greater than or equal to 2.5MPa = L; (note 1-3)(3) liquid containing gas, liquefied gas and the highest working temperature is higher than or equal to its standard boiling point.The accessories of the pressure vessel that meet the above requirements need to be checked.
Q:The outlet flow of centrifugal pump to adjust the valve closed small, vacuum gauge and pressure gauge change?
The flow rate decreases, the loss is small, the vacuum of vacuum table decreases, the head increases, and the pressure of outlet pressure gauge increases
Q:Set up a factory. May I ask what equipment you need to build a pressure gauge factory?
Is the professional calibration equipment, you Baidu will know, I am Nanjing Wanda instrument factory. Hope to help you.
Q:Diaphragm pressure gauge
Diaphragm pressure gauge measuring element type is "spring pipe + diaphragm", the diaphragm is only isolated transmission components, rather than sensitive components; diaphragm pressure gauge directly to the diaphragm as a sensitive element, and no longer use spring tubeThe diaphragm meter by spring tube range limit, the minimum range is usually only 0.1MPa or 60kPa; diaphragm pressure meter is usually used for micro pressure, the minimum can be 1kPa to 2.5MPa. two, the highest range have overlapping and complement each other.
Q:Why should the pressure gauge be checked regularly?
As the pressure gauge is used for a period of time, the internal parts are subjected to wear and deformation, which results in various failures or variations in the magnitude of the instrument, resulting in loss of accuracy and over tolerance. In order to ensure the accuracy of the pressure meter value, in order to achieve the correct indication, safe and reliable operation of the purpose, the pressure gauges should be periodically tested.

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