JB-300B Semi-automatic impact testing machine

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Ⅰ、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.

Ⅱ、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.

Ⅲ、Main technical specifications:

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

Q:Our unit has a 2.2kW water supply motor, running with EV1000. How to control according to the remote pressure gauge? Is to control the pressure within a certain range. Read the instructions, there is a process closed loop control parameters, but not quite understand.. please expert advice. It's best to say what parameters you need to change.Added 15 points to answer satisfaction.: Method for controlling water pump by remote pressure gauge by Emerson frequency converter:The remote contact signal is first transmitted into the PLC, and after the arrangement, the starting signal of the frequency converter is uniformly sent through the PLC. PLC can judge or delay method to control the frequency converter start and stop pump action, to achieve not only switch control water pump, but also soft soft stop pump effect. As for the wiring, relatively simple, PLC contact is connected to the frequency converter to start, stop contact. Of course, the water pump protection circuit is completed. Logical control is done by PLC.Note: it is not suitable to control the frequency converter directly with the contacts of the remote pressure gauge. First of all, the contact jitter, will damage the inverter, and secondly, the number of contacts is not enough.

Q:What are the requirements of the gas pressure test for the pressure gauge?: The maximum pressure shall not exceed the upper limit of the pressure gauge, preferably at the 2/3 position, and the measurement accuracy is relatively high. If the production needs to be calibrated by the technical measurement Institute, the validity shall be used within the period of validity. The watch list is better. The dial is larger. It looks clearer.

Q:Is the pressure meter the same as the pressure meter?: Generally, the pressure gauges are relative to the atmospheric pressure, so the pressure difference meter is also used. There is very little comparison between meter and absolute vacuum, do you think so?

Q:Seismic pressure gauge compared with ordinary pressure is what, what is the scope of application: Ordinary pressure gauges are suitable for measuring the pressure and vacuum of liquids, gases, or vapors that are free of explosion, crystallization, solidification, and corrosion of copper and copper alloys.Vibration proof pressure gauge is widely used in machinery, petroleum, chemical, metallurgy, mining, electricity and other sectors, measurement of non corrosive medium on copper and copper alloy pressure.Seismic pressure gauge pressure gauge has the advantages compared with ordinary:The utility model is suitable for the environment violent vibration places, and can withstand the pulsation of the medium, the impact and the sudden unloading, and the instrument indication is stable and clear.

Q:What are the procedures for checking the pressure gauge in that department?.: Quality Supervision Bureau

Q:Why is the stop valve in front of the pressure gauge?: The valve should be called pressure gauge switch is a small valve or throttle valve is mainly used to connect the pressure gauge and oil cut off, or adjust the opening size plays a role to prevent, reduce pressure rapidly beating, prevent damage, but also can be used for the general small flow valve or throttle use. The pressure oil interface is internally and externally threaded.

Q:Can you use the precision pressure gauge of level 0.25, measuring range (0~10) and MPa to verify the general pressure gauge of level 1, measuring range (0~6) MPa? Why?: Yes, measurement pressure gauge inspection requirements, standard table accuracy requirements greater than or equal to 4 times

Q:See others welding, found that there are two pressure gauges on the cylinder, one is 0-0.3 range as if, and the other is 0-4 range, ask why, is it safety considerations or other reasons? thank: 0-0.3MP is a low pressure meter, which is an oxygen pressure reducer. It converts the high-pressure oxygen into a uniform low-pressure oxygen through the knob handle to supply welding or cutting. 0.3MP's pressure is very common.0- 4MP is a high pressure oxygen meter. The oxygen bottle allows 15MP gas to be filled. This is the gas left in the cylinder at present, 4MP. High pressure makes gas cylinders fill more gas.

Q:Do not understand ah, general repair air conditioning is to see that MPa ah, this temperature is what temperature ah? What's the saturation temperature? Oh, thank you: There are two main air conditioning test pressure, a condenser outlet pressure, a back pressure evaporator, the refrigerant from the condenser outlet state is liquid, so the pipe is fine, the refrigerant from the evaporator outlet state is gaseous, so thick pipe.Repair air-conditioning generally look at these temperatures:1. indoor air outlet temperature, used to determine whether the normal air conditioning.2., the condenser outlet temperature, used to determine whether the condensation is too cold, the greater the supercooling, the better.3., the evaporator outlet temperature, used to determine whether the gas back overheating, overheating is too large, small is not good.Notice that the outdoor unit is a condenser when it is cooled and the chamber is an evaporator.Saturation temperature is the temperature in which a liquid evaporates and a vapor condenses in a dynamic equilibrium state, i.e., a saturated state. Saturation temperature is related to pressure.

Q:For example, I want to stop the pump before the pump pressure signal and now, through the pump pressure signal, adjusting the frequency of the pump, to ensure the pump pressure at a fixed value, it will the pressure signal through the pressure transmitter is good or remote pressure gauge? Shall I use the remote pressure gauge before pumping and use the pressure transmitter after the pump? Is the electric contact pressure meter reliable?: It's better to use the same control list, just like the accepted signal, a little simpler in programming.Which one depends on the specific situation, if the pressure changes relatively large, start frequency is relatively high, using a pressure transmitter is a little better. The reason is that the remote meter (resistance type) can not work; the contact point of the electric pressure gauge is easy to burn out. So it's better to use a pressure transmitter

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