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column information in the field of hydraulic machinery, relying on friends [20 years] industry deep plowing experience, focus on the output of hydraulic technology innovation, market trends, application cases and other high value content. With the aim of "professional, timely and deep", we provide one-stop information service for engineers, purchasing decision makers and industry researchers, helping users to accurately grasp the pulse of hydraulic technology development.
1. The screw that adjusts the pressure causes the lock nut to loosen due to vibration and causes pressure fluctuations; 2. The hydraulic oil is not clean and there is smiling dust, which makes the main valve core slide inflexible, resulting in irregular pressure changes, and sometimes the valve Stuck 3....
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Pressure holding specifically means that when the 315-ton hydraulic press is operating, the hydraulic oil pump supplies oil to the cylinder, and the one-way valve is used to hold the pressure and the regulating valve controls the oil pressure. When more than the set value, and the door to discharge oil, at the same time, to maintain the set pressure. It's...
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1, 400 tons of hydraulic press thermal deformation. Due to the small gap of the matching gap, the moving parts with different thermal expansion coefficients in the hydraulic component are stuck, resulting in failure. Affect the transmission accuracy of the hydraulic system of the hydraulic press, resulting in the working quality of the components...
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1. Appropriately increase the diameter of the damping hole of the main valve core of the hydraulic press. Usually, the diameter of the damping hole of the relief valve in China is 0.8-15mm, which can be changed to 1.5-18mm. This has little effect on the static characteristics, but the lag time can be...
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1. Poor heat dissipation. The oil tank design is too small when the 1000-ton four-column hydraulic press is designed and selected, resulting in too fast oil circulation or poor cooling effect due to high ambient temperature. This is the reason for poor heat dissipation. 2, oil into the air or water...
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1. Hydraulic oil with appropriate viscosity should be used 2. If there is a hose in the system, it should be reliably clamped and positioned. When changing a hose to make it too close to high temperature, it will cause the hose to overheat, resulting in overheating of the oil passing through it, so you should avoid making...
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1. When the pressure reducing valve, the outlet pressure is controlled to ensure that the outlet pressure is a stable value. The pressure reducing valve of the hydraulic press is connected in series with the load. The pressure regulating spring chamber has an external drain port, which adopts negative feedback of the outlet pressure. The valve port is normally open when not working, and the overflow valve is inlet pressure control...
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When overhauling any part of the hydraulic system of the 1200-ton hydraulic press, there must be skilled personnel who fully understand its principle and performance before it can be carried out. 2. The high pressure that the four-column hydraulic press can bear is 25MPA. If...
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The first stage: the installation of 400 tons of hydraulic press should be done in advance before the installation of the foundation, usually choose concrete foundation. The hydraulic machine bed is fixed with bolts, so when making concrete foundation, bolt holes should be reserved in advance and poured after installation...
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