Tensile test of pressure testing machine: Tensile test (in-situ stress-strain force test) usually clamps the two sides of the raw material specimen on the fixture with two necessary spacing. The fixture separates the two fixtures at the necessary rate and stretches the specimen to determine the stress change on the specimen until the specimen is destroyed. Tensile experiment of tension machine is one of the most widely used ways to study the mechanical compressive strength of materials. Constant speed fitness exercise must be applied. Next, let's take a look at the installation steps and common problems of the downward pressure testing machine.
Installation steps and common problems in overhaul of pressure testing machine 1. Installation steps of pressure testing machine Pressure testing machine should be installed in clean, dry, non-vibration room with suitable temperature. The locations of the servers and fuel tanks of the pressure testing machine should be defined according to the appearance and roadbed drawings of the tester. The upper plane of the foundation should be flat and leveled with a horizontal ruler. After the foundation is dried, the test machine is installed.
The distance and direction between the main engine and the oil source are determined according to the outline map, the base map and the size of the tubing.
Then the thin plate is placed between the base and the base of the main engine. Then the square level instrument of 0.05/1000 is used to align. The square level instrument is placed on the outer surface of the cylinder and its perpendicularity is found on the two sides which are perpendicular to each other. Its perpendicularity should be less than 0.2/1000. Or put the bar level instrument on the workbench to find its level, which should be no more than 0.2/1000.
After the pressure testing machine is aligned, the sole nuts are poured with concrete, and the pads under the motor shaft are firmly padded. The joint concrete fills up all the clearances under the motor shaft to maintain the basic fusion of the motor shaft and the concrete, avoiding the instrumentation of the tester due to its vibration during the whole application process.
After grouting, it is not allowed to fasten the tester and start the main machine (the drying time of cement is not less than 10-15 days) before the cement is dried. After the cement is dried, the tester is fixed on the foundation with the foot bolt. Installation accuracy of the pressure testing machine is checked to see if it is consistent with the alignment accuracy. If not, correct again.
Installation process and maintenance precautions of pressure testing machine 2. Maintenance precautions of pressure testing machine 1. When removing modules from pressure testing machine, attention should be paid to recording their corresponding positions, connecting cable numbers, and for fixed circuit boards, the corresponding pressing parts and bolts should also be taken down before and after recording.
2. Electric ferrochrome should be placed in front of the hand during overhaul to prevent overhaul of PCB circuit boards. The soldering head needs to be properly repaired to incorporate into the welding of integrated circuit chips and to prevent other electronic devices from being damaged during welding.
3. When measuring PCB, the corresponding solder joints should be found as test points. Do not eradicate the solder film. Some boards are all brushed with insulating layer, and the insulating layer can only be scraped with blades at the solder joints.
4. When measuring the resistance between lines, the power supply should be disconnected. When measuring the resistance, the red and black pens should be interchanged to measure twice, with the larger resistance as the reference value.
5. Relevant lines should not be cut off at will. The PCBs on the pressure testing machine are mostly double-sided metal orifice plates or multi-layer orifice boards. The printed circuit is thin and dense. Once cut off, it is not easy to weld, and it is easy to cut off adjacent lines when tangent lines are cut off.
6. Check the power supply configuration and types of PCB. According to the need of inspection, power supply can be provided separately or totally. Attention should be paid to high voltage, some circuit boards are directly connected to high voltage, or there are high voltage generators in the board, which should be properly insulated. Special attention should be paid to operation.
In summary, the above is the installation process of pressure testing machine and the related introduction of maintenance considerations. I hope this article can help you. Friendship Tips: If there is any unclear place, please call for consultation. Jinan Kesheng Test Equipment Co., Ltd. is a modern high-tech company which mainly focuses on R&D, design, production and sales of test equipment. A variety of machines for your choice!