Installation and commissioning of hydraulic universal testing machine

Microcomputer hydraulic servoHydraulic universal testing machineIt is an advanced material testing machine. It uses it to test the mechanical properties of metal data in tensile experiments. The performance indicators that can be tested include: upper yield strength, yield strength, triple strength, tensile strength, regular non-proportional extension strength, elastic modulus, and elongation after break. The regular non-proportional extension strength and elastic modulus need to be measured by the device electronic extensometer. Ordinary enterprises purchase electronic hydraulic universal testing machines for tensile, compaction, bending, friction, peeling/tearing and other experiments.
First, let’s talk about the reason why hydraulic universal testing machines are usually used in metal materials, but there are fewer inspections for non-metal materials such as hard plastics, triangle belts, stones, braided ropes, etc. In fact, this mainly depends on the requirements for the range of different materials. Metal materials have small range indications for the range and high accuracy, while the same non-metallic materials will not be able to meet the test requirements because of the large range indication and low accuracy. Therefore, under normal circumstances, the detection of non-metallic materials is carried out using an electronic universal testing machine, which not only meets the requirements, but also has high accuracy.
The power supply voltage of the hydraulic universal test machine is a three-phase 380V main body and the electrical connection between the hydraulic control box is plugged. Before powering on, open the iron door of the hydraulic control box to check whether the wiring is falling off, whether the fuse is loose, and clean the dust and debris in the electrical box. After confirming that the equipment is connected to the power supply line, press the "Power" button on the hydraulic control box counter panel, and the indicator light will show that the information has been retrieved and powered on. Open the oil pump and check whether the operating direction of the oil pump is consistent with the direction indicated by the arrow. If the opposite is true, change any two connected positions, then activate the jaw seat lift button, remove the wooden block on the platform, unscrew the oil feed valve and raise the piston. Refer to the ruler on the main column to check whether the piston stroke limit switch works.
Hydraulic universal testing machine debugging
(1) Turn off the oil pump motor, turn off the MS wire on the oil pump, discharge the air in the pump (and a small amount of oil flows out), and then rotate the wire block after exhausting the air: start the oil pump to repeatedly lift the piston to drain the air in the oil cylinder and oil pipe.
(2) Pull the cold-bending support to both sides equally, and do not touch it when moving the cross beam is lifted and lowered:
(3) Install spherical lower pressing plate on the platen, lift and move the cross beam so that the upper and lower pressing plates are about 20mm apart:
(4) Start the oil pump, close the oil return valve and open the oil supply valve to make the platen rise, and slowly increase the pressure:
(5) Check whether there is any oil leakage at each oil pipe joint:
(6) If there is oil leakage, tighten the joints and materials at the oil after unloading the force.

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