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How to maintain a core mold vibration pipe making machine?
Publish Time：
2022-07-06 09:24
How to maintain a core mold vibrating pipe making machine?
Core mold vibration technology is applicable to various reinforced concrete drainage pipes formed by core mold vibration, often used in industry. So, how to maintain a core mold vibrating pipe making machine?
How to maintain a core mold vibrating pipe making machine?
Core mold vibration technology specifications are applicable to various reinforced concrete drainage pipes formed by core mold vibration, commonly used in industry. So, how to maintain the core mold vibrating pipe making machine?
How to maintain a core mold vibrating pipe making machine?
1. Regularly check the oil level in the oil tank. The oil level must not be lower than the specified value.
2. When the oil micro-filter is blocked by dirty substances, it should be replaced immediately. If the original oil filter is blocked, it should be cleaned every three months.
3. When adding oil to the oil tank, it must be filtered. The oil cannot be mixed with water, rust, waste metal, fibers and other impurities.
4. In winter or cold areas, when starting the water pump, first stop the operation, repeatedly raise the oil temperature several times, and wait until the hydraulic pump station runs smoothly before starting work.
5. Operators must not touch any handles on the hydraulic pump station.
6. Regularly observe whether the power voltage fluctuates abnormally, check once every three months.
What are the precautions for core mold vibration technology?
1. Pipe mold
In principle, the core mold vibration process only needs one set of pipe molds to produce one or more specifications and varieties of products, so the consistency of product size is very high, and the processing quality of steel molds is even more important. Steel mold design has its special importance, and the following should be noted:
(1) If the inclination angle of the socket working surface is small, when the rolling disc is lifted, because the concrete has not yet had strength, under the action of friction, the step of the socket working surface is prone to annular cracks.
(2) The number and position of reinforcing materials are reasonable, and the vibration transmission efficiency is high.
(3) The mold is light in weight and good in elasticity, so that the concrete mixture can be turned into liquid with small power, reducing the posterior angle of the vibration stage, reducing surface foam, and ensuring the uniformity of the concrete texture after compression.
(4) The steel plate strength and pipe mold stiffness should meet the requirements. The dimensions are correct, and the pipe mold connection should prevent leakage; the steel welding should be smoothly polished, and there should be no hammer pits in the can. The upper and lower diameters are uniform, the taper diameter differs by 3 mm, ensuring smooth hair removal, reducing adhesion resistance, reducing the load of crane equipment, and the tubular concrete is not easy to break.
2. Length, weld points and outer diameter of steel skeleton longitudinal reinforcement
Ensure that the weld points are firm. If the welding frame weld points are welded during the forming process, the steel bars will rebound after demolding, causing cracks in the pipe body concrete. The outer diameter of the steel bar locator should be 2~5 mm smaller than the inner diameter of the outer mold, otherwise the steel bar frame after demolding will also cause cracks in the pipe body concrete due to rebound. When pressing the upper end, if the longitudinal reinforcement is too long, it will be compressed and bent, causing the steel bar frame to deform, which is the main reason for the end annular cracks. A 25mm thick concrete protective layer should be adopted at the upper mouth.
3. Vibration start time
According to the pipe specifications and vibration parameters, after feeding to a certain height (1/4~1/3) or 500mm, start vibration. Dry vibration, equipment air vibration, large noise, vibrator and pipe mold are easy to damage; if the vibration is started too late, the gas in the lower layer concrete mixture is difficult to discharge, and there are more air bubbles and pits on the pipe wall, and the density decreases.
4. Vibration forming of pipe conveying. In the process of pipe material feeding and vibration forming, a rotary belt feeder is used for feeding, feeding and vibrating at the same time, and vibration and feeding need to be coordinated. Adjust the feeding speed and quantity while adjusting the vibration parameters according to the production pipe specifications.
Die vibration
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