What driving method does the hydraulic stretcher use to reinforce the tank?

The hydraulic stretcher reinforces the tank through a hydraulic drive system. Its core principle is to use the pressure of hydraulic oil to transmit power and drive the actuator to apply uniform and controllable force to complete the plastic deformation or structural strengthening of the tank. The system can provide stable high-pressure output to ensure that the tank is evenly stressed during the reinforcement process and avoid local stress concentration or uneven deformation. The advantage of hydraulic drive lies in its powerful power output and precise control ability, which can adapt to the reinforcement needs of tanks of different materials and specifications.

The hydraulic drive system is mainly composed of core components such as hydraulic pumps, hydraulic cylinders, control valve groups, oil tanks and pipelines, as well as pressure sensors and control systems. As a power source, the hydraulic pump converts mechanical energy into hydraulic energy and generates high-pressure oil flow to drive the entire system. As an actuator, the hydraulic cylinder is responsible for converting hydraulic energy into mechanical energy, outputting linear thrust or pressure, and directly acting on the tank. The control valve group is used to adjust the flow direction, pressure and flow of hydraulic oil to ensure precise and controllable movements. The oil tank and pipeline constitute the storage and delivery channel of hydraulic oil to ensure smooth circulation of the system. The pressure sensor and control system monitor and adjust the pressure parameters in real time to ensure that the reinforcement process is stable and reliable.

The reinforcement process first requires positioning and clamping operations. The tank body is accurately placed on the workbench of the hydraulic stretcher and fixed by a special clamp or mold to ensure that there is no deviation or shaking during the reinforcement process. This step is crucial for the subsequent pressurization operation and directly affects the uniformity and consistency of the reinforcement effect. Then enter the hydraulic drive pressurization stage. After the hydraulic pump is started, the high-pressure oil enters the hydraulic cylinder through the control valve group, pushing the piston rod to extend, so that the pressure head or roller applies a preset pressure to a specific part of the tank body. During this process, the system will adjust the pressure parameters in real time through the electro-hydraulic proportional valve or servo system according to the material and process requirements of the tank body to ensure that the pressurization process is accurate and controllable.

In the plastic deformation or structural strengthening stage, tanks of different materials will exhibit different characteristics. Metal tanks usually undergo local plastic deformation under the action of hydraulic pressure, such as forming reinforcing ribs through rolling process, thereby significantly improving the compressive strength. Composite materials or plastic tanks are mainly strengthened by hydraulic compaction or hot pressing to enhance the interlayer bonding effect or improve the structural density. This stage is the core link of the entire reinforcement process and directly determines the final quality performance of the tank. After completing the plastic deformation, the system enters the pressure relief and reset stage, the control valve switches the oil circuit direction, the hydraulic oil smoothly returns to the oil tank, the cylinder piston rod automatically retracts, and the pressure head is separated from the surface of the tank. At this time, the tank can be moved out of the workbench and enter the next production process.

The hydraulic drive method has many significant advantages. First, it can provide extremely high pressure output. The hydraulic system can easily generate tens to hundreds of tons of force, which fully meets all kinds of high-strength reinforcement needs. Secondly, the control accuracy is high. Through advanced sensors and electronic control systems, stepless adjustment of pressure and speed can be achieved, effectively avoiding tank damage caused by pressure loss. In addition, the uniformity of force application is excellent. The linear motion characteristics of the hydraulic cylinder ensure the uniformity of pressure distribution, which is crucial to ensure the consistency of the overall strength of the tank. In addition, the hydraulic system has a wide range of adaptability. It can process various types of tanks of different shapes, sizes and materials by simply changing the mold or adjusting the system parameters, which greatly improves the versatility and economy of the equipment.

In practical applications, hydraulic stretchers show a wide range of applicability. In the chemical industry, it is often used to reinforce the welds or cylinders of large storage tanks, significantly improving the pressure resistance of the equipment. The food packaging industry uses it to precisely compact the bottom and cover of the tank to ensure that the sealing performance and deformation resistance of the packaging container meet the strict standard requirements. The pharmaceutical industry particularly favors the processing ability of hydraulic stretchers for thin-walled metal containers (such as aerosol cans). Through precise hydraulic bulging technology, complex reinforced structures can be formed to meet the special strength requirements of pharmaceutical packaging. These application examples fully demonstrate the key role and excellent performance of hydraulic stretchers in various industries.

When using hydraulic stretchers, there are several key precautions that need special attention. Pressure calibration is the basis for ensuring the normal operation of the equipment. The system pressure must be checked regularly to prevent tank rupture or equipment damage due to excessive pressure. The cleanliness of hydraulic oil directly affects the reliability of the system. A strict oil filtration and replacement system needs to be established to prevent contaminants from clogging the precision valve group. Safety protection measures should not be ignored. The equipment should be equipped with a complete emergency stop device, and explosion-proof design should be considered in special environments such as chemical industry. Professional training of operators is also important. It is necessary to ensure that they are proficient in equipment operation specifications and emergency handling procedures.