1. The collision welding of polypropylene tank by extrusion winding is the process of processing PPH pellets into tanks by using PPH spiral extrusion winding unit. The system adopts the process of hot melting PPH particles, extruding them, and then winding them into cans on a steel mold.
Advantages of PPH winding tank and polypropylene tank extrusion winding;
◆ The production efficiency is 5-8 times higher than manual work.
◆ The product has good integrity, seamless, corrosion resistance and leakage resistance.
◆ The product is flat and beautiful, realizing the tank body is thin on the top and thick on the bottom, and reducing the price.
◆ The product size and shape are not limited.
◆ The product is a granular material with good anti-aging performance.
? Second, the external welding of polypropylene storage tank is a process of making a large weld at the most stressed part of the storage tank by using imported automatic extrusion welding unit. Brand-new PPH granular material, with the same performance as the tank body, is hot-melted at the big weld and integrated with the tank bottom and tank body.
? Process characteristics:
High degree of mechanization and automation, stable product quality.
◆ Weld specifications can be designed according to the stress characteristics of products, so as to give full play to the integrity of welds.
◆ The product has good integrity, and the weld is integrated with the matrix, which has good corrosion resistance and leakage resistance.
◆ It can reduce flash, and the seam is smooth and beautiful.
◆ Adding ultraviolet absorber into PPH particles can prevent aging and prolong service life.
Third, the internal welding of polypropylene storage tank is an automatic long arm extrusion welding process, which is a key step in all processes. A brand-new PPH granular material with the same properties as the tank body is melted at the internal weld, which is integrated with the tank bottom and tank body. The principle is the same as external welding, but the equipment is different.
Process characteristics:
High degree of mechanization and automation, stable product quality.
◆ Weld specifications can be designed according to the stress characteristics of products, so as to give full play to the integrity of welds.
◆ The product has good integrity, and the weld is integrated with the matrix, which has good corrosion resistance and leakage resistance.
◆ It can reduce flash, and the seam is smooth and beautiful.
◆ Adding ultraviolet absorber into PPH particles can prevent aging and prolong service life.
4. Nozzle installation and nozzle installation of polypropylene storage tank is the last process, which is equivalent to the bottom welding of a reduced version, that is, the nozzle and flange are welded by an imported small automatic extrusion welding machine set, then the corresponding caliber is cut on the tank with a hole opener, and finally the portable extrusion welding of MUNSCH in Germany is adopted.
? Process characteristics:
High degree of mechanization and automation, stable product quality.
◆ The nozzle weld is integrated with the tank, and the welding strength is high.
◆ It can reduce flash and make the weld smooth and beautiful.
◆ Adding ultraviolet absorbent into polypropylene particles can prolong the service life.