Views: 0 Author: Site Editor Publish Time: 2022-10-13 Origin: Site
The pp pipe extrusion machine relies on the pressure and shear force generated by the rotation of the screw, so that the material can be fully plasticized and uniformly mixed, and formed through the die. At present, the pp pipe extrusion machine is widely used, and now it is mainly used in the plastic and aluminum alloy forming industries, as well as in the food industry.
What are the requirements for using pp pipe extrusion machine?
What are the factors affecting the use of pp pipe extrusion machine?
What are the precautions for using pp pipe extrusion machine?
Equipment requirements for pp pipe extrusion machine
When using color masterbatch, it is easy to cause flow disorder in the reinforcing ribs or openings of the mold, resulting in uneven dispersion, so it should be avoided as much as possible in mold design. Compared with extrusion molding and injection molding, the L/D of the pp pipe extrusion machine is large, and the back pressure is increased after adding the filter screen, so the dispersion is good.
When the pp pipe extrusion machine is used for injection molding, the speed is slow and the back pressure is high, the dispersion is good. In order to disperse evenly, adding a static mixer at the front end of the screw is also an effective equipment improvement.
For the same rubber type, the higher the rubber content, the greater the expansion rate; the lower the rubber content, the smaller the expansion rate. For the same rubber compound, the higher the plasticity, the smaller the extrusion expansion rate; the lower the plasticity, the larger the expansion rate. The expansion ratio decreases with the increase of the thickness of the extruded rubber layer. For the same kind of rubber compound, under the same process conditions, the extrusion temperature is high, the expansion rate is small; the extrusion temperature of pp pipe extrusion machine is low, the expansion rate is larger.
In order to protect the gearbox of the pp pipe extrusion machine, the following must be done:
1. After 500 hours of first use, replace the lubricating oil once;
2. The pp pipe extrusion machine is lubricated with 150 original medium pressure gear oil;
3. The oil level during normal operation shall not be lower than the center line of the oil mark, and should be replenished in time when it is lower than the center line;
4. Change the oil every 3000 hours;
5. When changing the oil, clean the case and oil filter. After clarifying the lubricating oil used this time, apply the cleaned lubricating oil to the box for cleaning, then drain it and inject new lubricating oil;
6. The lubricating oil filter should be cleaned once a month during normal use, and once a week during the running-in period. Cleaning method: find the oil filter, open it, and remove the dirt.
Zhangjiagang YaTong Machinery Co., Ltd., which has been established for over ten years, focuses on the production of pp pipe extrusion machines. Here, you can find the pp pipe extrusion machines you need.