In the fields of industrial production and mechanical manufacturing, hydraulic systems play a crucial role due to their high-efficiency and stable power transmission performance. As a key device for connecting hoses and fittings in hydraulic systems, the working pressure parameter of hydraulic hose crimping machines not only directly determines the quality and reliability of crimping operations but is also closely related to the operational safety and efficiency of the entire hydraulic system. A thorough understanding of the working pressure of hydraulic hose crimping machines is of great significance for optimizing equipment selection and ensuring the smooth progress of production operations.
The Key Role of Working Pressure
The working pressure of a hydraulic hose crimping machine essentially refers to the squeezing force exerted by the equipment on the hydraulic hose fittings during the crimping process. The magnitude of this pressure value determines the firmness of the connection between the fitting and the hose. In industries such as construction machinery, mining machinery, and shipbuilding, hydraulic systems often operate in environments with high pressure, heavy loads, and intense vibrations. If the working pressure of the crimping machine is insufficient, the connection between the fitting and the hose will be insecure, making it extremely likely to cause serious problems such as leakage and disconnection during system operation. This can lead to hydraulic oil leakage, not only polluting the environment but also potentially triggering equipment failures, resulting in safety accidents and production stoppages. Conversely, if the working pressure is too high, it may damage the hose and fitting, reduce their service life, and increase production costs.
Common Working Pressure Ranges
Different models and specifications of hydraulic hose crimping machines have varying working pressure ranges. Generally speaking, the working pressure of common crimping machines ranges from several dozen tons to several hundred tons. Take the commonly seen YJK - 80N crimping machine in the market as an example; its maximum crimping force can reach 500T, and the system pressure is 31.5Mpa. Crimping machines suitable for connecting medium and high-pressure hydraulic hoses usually have a working pressure ranging from 100 - 400T, corresponding to a system pressure of 20 - 35Mpa. For equipment used in crimping hoses of low-pressure hydraulic systems, the working pressure may range from 50 - 150T, with a system pressure mostly between 10 - 20Mpa. Of course, with the development of industrial technology, some high-performance crimping machines can achieve higher pressure crimping to meet the requirements of special working conditions.
Factors Affecting the Selection of Working Pressure
1. Working Pressure of the Hydraulic System
The working pressure of the crimping machine needs to be matched with that of the hydraulic system it serves. If the operating pressure of the hydraulic system is 25Mpa, the crimping machine should be able to provide sufficient pressure to ensure that the crimping strength of the fitting can withstand the system pressure and maintain a reliable connection even when the system pressure fluctuates.
2. Material and Specifications of Hoses and Fittings
Hoses and fittings of different materials and specifications have different requirements for crimping pressure. For example, high-pressure hoses with a large number of wire braid layers and large diameters, when used with heavy-duty fittings, require higher crimping pressure. In contrast, thin-walled, small-diameter low-pressure hoses require relatively lower crimping pressure. Due to their different material properties, rubber hoses and metal hoses also have significant differences in crimping processes and pressure requirements.
3. Working Conditions of the Application Scenario
In working conditions with frequent vibrations and large impact loads, such as construction sites, the crimping machine needs to provide higher working pressure to enhance the vibration and impact resistance of the connection between the fitting and the hose. In relatively stable industrial production environments, the requirements for crimping pressure can be appropriately reduced.
Adjustment and Control of Working Pressure
Most hydraulic hose crimping machines are equipped with a pressure adjustment function, and the common method is through a relief valve. Take a typical crimping machine as an example; turning the adjustment knob of the relief valve clockwise increases the system pressure, while turning it counterclockwise decreases the pressure. In actual operation, operators need to precisely adjust the working pressure of the crimping machine according to the parameters of the hose and fitting and the requirements of the hydraulic system. At the same time, advanced crimping machines are also equipped with pressure sensors and control systems, which can monitor pressure changes in real-time. When the pressure reaches the set value, the crimping action stops automatically, ensuring a stable and precise crimping process and avoiding the impact of excessively high or low pressure on product quality.
Conclusion
The working pressure of hydraulic hose crimping machines is a key parameter that cannot be ignored during equipment selection, operation, and maintenance. Only by fully understanding the role, range, influencing factors, and control methods of working pressure can we reasonably select crimping machines in practical applications, ensure the safe and reliable connection of hydraulic systems, and provide a solid guarantee for the efficient and stable operation of industrial production.
Handanshi Kangmai Hydraulic Equipment Co., Ltd. is located in the east of Wangzhuang,on the Hanlin expressway. Our main products have 9 series and 50 types which contains hose crimping machine, hose cutting machine,hose skiving machine...
