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What are the characteristics of the core mold vibration pipe manufacturing process?
Publish Time：
2022-07-25 10:16
The characteristics of the core mold vibration pipe-making technology are that the pipe concrete uses hard concrete, and the pipe mouth is extruded through core mold vibration. Core mold vibration mainly depends on the eccentric block on the rotating shaft, and the number of eccentric blocks depends on the pipe length. The vibration frequency mainly depends on the pipe diameter and wall thickness. According to the pipe diameter and wall thickness, the frequency can be adjusted in the range of 0~75hz, and the amplitude can also be adjusted. By adjusting the vibration frequency and amplitude, the optimal vibration force can be generated to compact the concrete. Therefore, the core mold vibration process has a high degree of automation, and its material distribution process, vibration process, and nozzle extrusion process are automatically completed through program control. Therefore, the process produces
The core mold vibration pipe making technology is characterized by the use of hard concrete for the pipe concrete, and the pipe mouth is extruded by core mold vibration. Core mold vibration mainly depends on the eccentric block on the rotating shaft, and the number of eccentric blocks depends on the pipe length. The vibration frequency mainly depends on the pipe diameter and wall thickness. According to the pipe diameter and wall thickness, the frequency can be adjusted in the range of 0~75hz, and the amplitude can also be adjusted. By adjusting the vibration frequency and amplitude, the optimal vibration force can be generated to compact the concrete. Therefore, the core mold vibration process has a high degree of automation, and the material distribution process, vibration process, and nozzle extrusion process are all automatically completed through program control. Therefore, the pipes produced by this process have high concrete strength, good impermeability, strong external pressure resistance, large allowable thrust, and high production efficiency.
In summary, the core mold vibration process for producing reinforced concrete drainage pipes has the following advantages compared to other processes:
1. High concrete strength of the pipe body, reaching C50 or more, without the phenomenon of concrete stratification during the centrifugal process.
Because the vibration force is transmitted from the inside to the outside, the concrete strength of the pipe body is uniform, and the inner wall of the pipe has good wear resistance.
2. The pipe body socket end face is flat and has high strength. Since the end face of the socket is formed by vibration extrusion during the core mold vibration process, the end face is very flat, with a flatness of less than 1mm and an inclination of 0.6-1%. There will be no phenomenon of low concrete strength caused by the vertical vibration process, nor will there be a phenomenon of concrete segregation at the end face of the pipe body. Therefore, the end face of the pipe body produced by the core mold vibration process has high strength and can withstand large loads.
3. The position of the steel ring net is accurate, and there will be no phenomenon of steel bar displacement, steel bar jumping, steel bar merging, or steel bar loosening during the hanging roller process. The pipe body has good impermeability and can guarantee 100% water tightness. The overall structural strength of the pipe is high, and it can resist large external pressure loads.
4. Core mold vibration technology: Only one set of inner and outer molds is used for one type of pipe, and the shape and size of the pipe are consistent.
5. Various shaped pipes can be produced, such as elliptical pipes, pipes with bases, top pipes with protective trenches, box culverts, etc.
6. Large-diameter reinforced concrete drainage pipes with a diameter of 3500 mm can be produced.
7. High degree of automation, low labor intensity, and high production efficiency.
8. Energy-saving and environmentally friendly, no waste slurry is produced during the production process.
Compared with other types of curing and molding processes using molds, the surface smoothness of the drainage pipe body formed by core mold vibration is relatively poor, although it does not affect any quality of the drainage pipe. However, due to the habitual understanding of construction and related units, this problem has indeed become a major difficulty in the widespread application of core mold vibration pipe making technology. The new revised national industry standard "Concrete Drainage Pipes" has clear provisions on this issue. With the promulgation of the revised standard for concrete drainage pipes, the understanding of the characteristics of the core mold vibration molding process will gradually change.
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