1. Easy to get the maximum pressure
As the Hydraulic Oil Press hydraulic drive static pressure work, power equipment can be arranged separately, can be multi-cylinder joint work, which can make a large tonnage of Hydraulic Oil Press, such as 700 000 kN die forging Hydraulic Oil Press. But a large forging hammer with vibration, need a large anvil and the ground to shock, and the crank press by the crank connecting rod strength and other restrictions, it should not be done great.
2. Easy to get a great work trip
The Hydraulic Oil Press is easy to get a great working stroke and can press the full position at any position on the trip. The nominal pressure is independent of the stroke and can be stopped and returned anywhere in the trip. In this way, it is very convenient to have a process (such as deep drawing) requiring a long working trip, as well as the installation of molds, preloading, sub-loading or troubleshooting.
3. Easy access to large work space
Because it does not have a large mechanical transmission mechanism, and the cylinder can be arbitrarily arranged, so the larger work space, easy to organize automated production lines.
4. Pressure and speed can be steplessly adjusted
Pressure and speed can be easily carried out in a wide range of stepless adjustment, the general three-cylinder hydraulic function is easy to get three different pressure. If the high-pressure liquid into the middle of the cylinder, then get a pressure; access to the two sides of the cylinder, you get two pressure; three working cylinders at the same time into the high pressure fluid, get full pressure. And according to the process requirements can be in a certain trip for a long time pressure. The Hydraulic Oil Pressure can be reliably controlled, and the overload can be reliably prevented. In addition, but also easy to speed, such as slow chess to avoid the impact and so on.
5. Standardization of hydraulic components
Hydraulic components have been used, standardized, serialized, these to the Hydraulic Oil Press design and manufacturing to bring convenience, and hydraulic operation is convenient, easy to achieve remote control and automation.
The advantages of Hydraulic Oil Press many, but there are some shortcomings, there are still the main problems are as follows.
① Because of the use of high-pressure liquid as the working medium (mechanical oil or emulsion), so the accuracy of the hydraulic components of the higher requirements, the structure is more complex, the machine adjustment and maintenance more difficult, and the current liquid leakage problem is difficult to avoid, not only pollution Environment, waste of pressure oil, but also in the thermal processing plant when there is the risk of fire.
② liquid flow pressure loss, and thus less efficient · high-speed movement when the efficiency is particularly low, so fast small Hydraulic Oil Press crank press is simple and flexible.
Because Hydraulic Oil Press has many advantages, it is widely used in industrial production. Especially in the forging, stamping production in the application of a long history, for large pieces of hot forging, large deep drawing process, even more superiority.
With the rapid development of the plastics industry, it has occupied a very important position in the plastic molding process, is the processing of thermosetting plastics, rubber products and tetrafluoroethylene cold blanks and other major compression molding machinery, and can process long glass fiber and flake The thermal properties of the filler plastic, the physical properties and mechanical properties of its products is better than injection molding products.
In operation, to ensure that the hydraulic system hydraulic system can be long-term reliable work, must be in the design or use of the process of attention to the following aspects:
(1) to prevent air into the system and timely mixing of the air into the system. Air into the hydraulic system hydraulic system, will cause noise and oil oxidation deterioration and other adverse consequences, must take measures to prevent air mixed, and often mixed into the system of air discharge.
(2) to always keep the oil clean. The oil is mixed with impurities, will cause the slide valve stuck, plug the throttle hole or gap so that the hydraulic components can not work properly, and the relative movement of parts wear and tear intensified. In addition to the installation of oil filter and a variety of external impurities into the system into the device, but also regularly clean the oil filter and replace the Chen oil. Hydraulic system hydraulic system in the assembly,Hydraulic Oil Press to clean the various hydraulic components and pipes. After the test, it is best to remove the components and pipes, and then carefully cleaned and then installed.
(3) to prevent leakage. External leakage is not allowed, the internal leakage is inevitable, but the leakage can not exceed the allowable value, if the leakage is too much, will not rise in pressure, the hydraulic machine can not achieve the desired force (or torque). And the size of the oil leakage and pressure level,Hydraulic Oil Press will make the work parts of the movement instability. In addition, due to excessive leakage, so that the volume loss increases, the oil temperature increases, in order not to appear too much leakage problems, it should be between the moving parts of the appropriate gap and install the appropriate sealing device.
(4) to prevent oil temperature is too high. General hydraulic system hydraulic system to maintain the oil temperature to 15 ~ 50 ℃ for the appropriate. Excessive oil temperature will bring a series of adverse consequences.
Increased oil temperature will make the oil thinning, leakage increases, the system efficiency. The oil is working at higher temperatures and is susceptible to deterioration. To avoid the oil temperature is too high,Hydraulic Oil Press in addition to the design to avoid the oil heat measures (such as oil pump unloading and high-power system for the use of volumetric speed method, etc.), but also consider the tank is sufficient heat dissipation capacity. If necessary, additional cooling devices may be added.
