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Operation and adjustment method of electro-hydraulic control system for hydraulic universal tensile strength tester

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Update time : 2021-05-11 10:13:50
  Operation and adjustment method of electro-hydraulic control system for hydraulic universal tensile strength tester
The measurement data of the same hydraulic universal testing machine tensile strength tester in different control states and testing different specimens will also be different. In addition, the relevant parameters must be adjusted according to its accuracy and speed requirements. Therefore, the operator should constant adjustment of relevant parameters to achieve excellent performance. Below we briefly introduce the reasonable operation and adjustment methods of the electro-hydraulic control system of the hydraulic universal tensile strength tester as follows:
 
1. When starting the machine, the console should be energized first, and then the hydraulic source should be started. If the hydraulic source is started first and the console is not in control, on the one hand, the hydraulic oil will enter the hydraulic cylinder due to the zero offset of the servo valve which may cause the piston to move in one direction until it hits the cylinder head, sometimes even a cylinder collision accident occurs; on the other hand, some electronic devices need to be warmed up, especially the strain gauge circuit, which needs to be warmed up for more than half an hour to make the zero position more stable. Therefore, the console should be energized to check whether the instruments are in normal condition when starting up. For the testing machine with several control modes such as displacement, force and deformation control, the control state should be placed at the displacement control position first, and then the corresponding control state should be switched to the corresponding control state after all start-ups are completed.
 
2. Use a square horizontal instrument to lean on the work platform, adjust or increase or decrease the shim under the base of the shim, to correct the plumbness of the oil cylinder, so that the error should not be greater than 0.10/1000. After the hydraulic universal tensile strength tester is level adjusted, use cement slurry to seal all the gaps under the machine base to keep the machine base and the cement foundation well combined to prevent the testing machine from being out of level due to vibration during use. After the anchor nut is poured, it is not allowed to tighten the anchor nut and start the test machine before the cement is dry (the cement drying time is generally not less than 10-15 days). After the cement is completely dry, fasten the anchor nuts and recheck the installation accuracy of the testing machine to see if it is consistent with the alignment accuracy. If it does not meet, it should be re-aligned. During the use of the testing machine, because the vibration during the test is prone to loosening, the relevant parts should be tightened after the hydraulic universal tensile strength tester has been used for a period of time.
 
To sum up, this is the relevant content of the "Operation and adjustment method of the electro-hydraulic control system of the hydraulic universal tensile strength tester " that I have compiled for you. I hope it can be helpful to you, and you can also directly communicate with the customer service of our website. , We will serve you wholeheartedly.
 
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