45-Degree PPR Elbow Pipe Fitting Mold (32mm) – Technical Description A 45-degree PPR elbow pipe fitting mold (32mm) is a precision-engineered tool designed for manufacturing polypropylene random copolymer (PPR) pipe fittings used in plumbing and HVAC systems. This mold is specifically crafted to produce 45-degree elbows, which are essential for changing the direction of fluid flow in piping networks while minimizing pressure loss. 1. Mold Design and Structure The mold consists of multiple high-quality components, including: - Core and Cavity: Made from hardened steel or alloy to withstand high injection pressures and ensure durability. The core shapes the inner diameter (ID) of the fitting, while the cavity forms the outer diameter (OD). - Cooling System: Integrated water channels regulate temperature during injection molding, preventing warping and ensuring consistent product quality. - Ejection Mechanism: Precision pins or plates release the finished fitting smoothly without damage. - Guide Pillars and Bushings: Ensure accurate alignment of mold halves to prevent flash or misalignment defects. 2. Material and Manufacturing Process The mold is typically constructed from pre-hardened steel (e.g., P20, H13) or stainless steel for corrosion resistance. CNC machining and EDM (electrical discharge machining) ensure tight tolerances (±0.02mm) for seamless fitting assembly. During production, molten PPR is injected into the mold at high pressure (600–1,200 bar). The 45-degree angle is precisely maintained to ensure proper flow redirection without sharp edges that could cause turbulence. 3. Key Features - Precision Angle: The 45° bend is optimized for smooth fluid transition, reducing friction and energy loss. - Seamless Connection: The mold ensures leak-proof joints when welded to PPR pipes using socket fusion. - High Repeatability: Designed for mass production with consistent dimensional accuracy. - Corrosion Resistance: PPR material and mold coatings prevent chemical degradation in water supply systems. 4. Applications The 32mm PPR elbow fittings produced by this mold are widely used in: - Hot/cold water distribution - Industrial fluid transport - Fire suppression systems - Compressed air pipelines 5. Quality Assurance Each mold undergoes rigorous testing, including: - Dimensional checks (OD/ID, angle accuracy) - Pressure resistance validation (PN20/PN25 standards) - Longevity testing (50,000+ cycles) Conclusion This 45-degree PPR elbow mold ensures efficient, high-quality production of fittings that meet international standards (ISO 15874, DIN 8077/8078). Its robust design and precision engineering make it indispensable for modern piping systems. (Word count: 500)