Cold pressing process is a process method in the production process of well cover. What are the characteristics of this process method in the production process? Today, let’s learn about the characteristics of well cover cold extrusion technology.

This cold extrusion technology department refers to adding short fibers into the mixed slurry, stirring evenly, pouring the mixed slurry containing fibers into the hopper of the existing machine, that is, the improved brick machine, coating the mold cavity with release agent, extruding the mixed slurry from the extruder, filling the mold cavity, and then extruding. After extrusion and curing for 5 ~ 10 minutes, the finished product can be taken out.

A reinforced composite interlayer is arranged in the space formed by the bottom and the spherical bottom shell to enhance its compressive strength and bearing capacity. When the well cover is pressed, the spherical bottom shell on the bottom surface can evenly transmit the dispersed pressure to prevent stress concentration, so that it is not easy to be damaged and has a long service life. Short fiber was added into the formula and improved by extruder to meet the extrusion requirements of magnesite mixed slurry. Therefore, the traditional molding process is abandoned, the yield of magnesite synthesis is greatly improved, and its strength, hardness and impact resistance are also improved accordingly. The well cover made of composite material has smooth surface, clear surface pattern, high strength and long service life.

Well covers are generally made of composite materials with unsaturated resin, glass fiber and other data through special production processes. After high-temperature grinding and molding, the product has no recycling value, so it is not so easy to extract reinforcement. High performance resin, glass fiber and special production process formula are adopted to ensure its permeability in glass fiber, greatly enhance the adhesion between them, so that the material will not be internally damaged under cyclic load, so as to ensure that the service life of the product is the same as that of other products, and effectively eliminate the disadvantage of poor adhesion.

It has high and low temperature resistance, good insulation, strong corrosion resistance, corrosion resistance, non-toxic and no metal additives. It can be used in complex and changeable places. It has obvious indexes such as acid and alkali resistance, corrosion resistance and aging resistance. The manhole cover can make complex logo and multi-color personalized design to make the design exquisite, colorful and clear. According to the requirements of customers, we can make imitation stones with the same appearance and color as all kinds of stone pavement. The bottom adopts a special design structure and continuous reinforced fiber wire to ensure the integration of fiber and glass fiber cloth from the material, so that the product has a certain bearing capacity, and the vehicle will not slip after compaction, no noise and less pollution.