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PE Pipe Fitting Mould Material Is Quite Necessary
- Oct 09, 2017 -

For PE pipe fittings, it is now increasingly widely used in our lives. Which accounted for about 80 injection molding technology. Injection Molding PE pipe fittings are widely used in automobile, construction, household appliances, food, medicine and so on because of its forming, precise size, with inserts, high productivity, easy to realize modernization and low processing capacity. The choice of plastic mold, for the plastic industry can receive good economic benefits is very critical, therefore, mold designers understand the basic requirements of mold materials and select the appropriate material is necessary.

PE pipe mold working conditions and cold stamping die is generally required to work at 150 ℃ -200 ℃, in addition to a certain pressure, but also to withstand the temperature. Is based on the use of plastic molding mold conditions, different processing methods will be the basic performance of plastic mold with steel generally summarized as follows:

PE pipe die hardness is usually below 50-60HRC, the heat treatment of the mold should have sufficient surface hardness to ensure that the mold has enough rigidity. Mold in the work due to the filling and flow of plastic to withstand greater compressive stress and friction, requiring mold to maintain the shape of the accuracy and dimensional accuracy of the stability, to ensure that the mold has sufficient service life. Mold wear resistance depends on the chemical composition of steel and heat treatment hardness, so improve the hardness of the mold is conducive to improving its wear resistance.

Excellent cutting: Most PE pipe mold, in addition to EMD processing need to be a certain cutting and fitter repair. To extend the service life of cutting tools, improve cutting performance, reduce surface roughness, pipe mold steel hardness must be appropriate.

Plastic pipe development early, PE pipe is much smaller than the amount of PVC pipe, the main reason is the economy. At that time, high-performance PE pipe material has not been developed, can only use the performance equivalent to PE63 grade PE material, due to low strength, the same conditions, PE pipe wall thickness than PVC pipe more than 1 times, not only high material costs Only in the lower pressure, smaller diameter pipe application, otherwise the wall thickness is too large to use. With the increasing intensity of research and development, a new generation of high-strength pipe dedicated PE material continue to emerge, not only PE80 level, also appeared PE100 grade products. Material upgrades to PE pipe a variety of stress significantly increased, the thickness of the wall is getting thinner, even lower than the PVC pipe.

International plastic pipe is a clear trend is the development of water supply and delivery PE pipe speed is very fast. Since the 1998 Munich International Coal Union LGU Valve Committee meeting unanimously recommended PE buried gas pipeline as a distribution pipe since the world more than 10 years of research and development, PE pipe has developed into many varieties, multi-application areas of pipe. From the gas distribution start, PE pipeline has entered the city water supply and drainage, farmland irrigation, sewage, mine oil field, floor heating, chemical medicine and other fields. Statistics show that PE pipe every year to 10% -15% speed rise.