Hydraulic testing machine is mainly used for tensile, compression, bending and shear tests of metal materials. By adding accessories, the mechanical properties of tape, chain, wire rope, welding rod and components can be tested. It has independent low noise accelerating oil source, full digital programmable amplifier installed in computer, intelligent design expert system with control mode, and can realize closed-loop control of various modes. It has an independent measuring and controlling system for testing force, deformation and displacement.

Hydraulic testing machine belongs to high precision testing instrument. Daily maintenance is very important to ensure the normal operation of the equipment and measurement accuracy. Maintenance of main engine of hydraulic testing machine: the fixture matched by the machine should be coated with rust-proof oil for storage; check the screw of the clamp position regularly, if loose, tighten in time; check the transmission of sprocket regularly, if loose, please re-tighten the tensioning wheel.

The sliding surface between the steel plate and the liner and the dovetail groove surface on the liner should be kept clean, and a thin MoS2 (molybdenum disulfide) grease should be coated regularly. Because the clamp of the hydraulic testing machine is often used, it is easy to wear and tear, and when there are too many oxide scales, it is easy to cause damage and oil leakage of the small piston, so the clamp should be cleaned regularly and kept clean. (zui does cleaning after each test); maintenance of oil source of hydraulic testing machine.

According to the use of the machine and the service life of the oil, the oil-absorbing filter and filter element are replaced regularly, and the hydraulic oil is replaced. Check regularly whether there is oil leakage in the main engine and oil source. If oil leakage is found, the sealing ring or the combination gasket should be replaced in time. When the test is not done for a long time, the power supply of the main engine should be turned off. If the machine is in standby state, the switch should be in the "loading" gear, because if the switch is in the "fast back" gear, the electromagnetic commutation valve has been on power, which will affect the service life of the device.

Maintenance of control system of hydraulic testing machine: The interface on the controller is one-to-one correspondence, and the wrong interface may cause damage to the equipment; the interface on the plug-in controller must turn off the power supply of the controller. If the machine is not used for a long period of time after the test, close the controller and the computer; check regularly whether the connection wire of the back panel of the controller is in good contact, and if it is loose, it should be tightened in time.