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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.
For cast iron pump body, when defects such as slag inclusion or pores occur, the defects can be cleaned first, and then repair welding can be carried out. If cracks occur in the pump body of the oil machine due to vibration, collision or knocking, oxygen-B bake gas welding or arc welding can be used...
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1. Press the start button to raise the working platform of the hydraulic press. Use four wooden sticks of the same height to firmly support the working platform. 2. Remove the bolt between the plunger and the bottom of the platform; 3. Use a smooth flat screwdriver to pry out the oil seal of the 315-ton hydraulic press...
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The working pressure of the hydraulic press with a load capacity of 400 tons should be limited to the nominal pressure. Oil pressure overload protection is a safety device to prevent stamping errors. Therefore, before operation, calculate the tonnage required for work in advance. During blanking operation, please maintain...
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1. The main valve heart hole of the 315-ton single-arm hydraulic press is blocked. If the hydraulic pressure does not inform the upper chamber of the main valve and the front chamber of the cone valve, the pilot valve will lose its perception of the pressure of the main valve. as a result of single arm hydraulic machine main valve of the upper chamber there is no oil pressure, so elastic small, main valve...
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First of all, when the 300 ton hydraulic press encounters such problems, it is necessary to be calm, observe the problem first, understand the problem, and then use the correct method to repair. hydraulic machine computer or valve plate is faulty: simple method is to change a new computer or new valve plate to test...
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The oil residue of the hydraulic oil, the welding residue, the cotton yarn left during cleaning and other sundries may block the oil pipe, making the lubrication point less oil or no oil, resulting in overheating and wear, or causing the oil supply plunger outlet The resistance is too large to cause damage. When the tubing happens...
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1. The worktable with poor processing quality has a large area. Cast iron backing plate is generally composed of dozens of pieces. How much does the hydraulic press cost? If the thickness of each backing plate cannot be guaranteed to be completely consistent during processing, unevenness will inevitably occur after assembly, thus in the worktable...
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1. The basic principle of cavitation. When the pressure of the 200-ton hydraulic press increases, the air in the oil will turn into bubbles. When the pressure rises to a certain critical value, those bubbles will break at high temperature, so the high temperature and high pressure air will quickly act on the parts...
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1. When the hydraulic pump of the 800-ton hydraulic press is working, there are mechanical conflicts between the bearing and the shaft, between the shaft and the seal, and between the blade and the relative moving parts of the inner wall of the pump, and then the collision resistance is lost. the loss with four column hydraulic machine...
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