CPVC Female Tee Pipe Fitting Mold: Detailed Description A CPVC female tee pipe fitting mold is a precision-engineered tool designed for manufacturing three-way pipe connectors used in chlorinated polyvinyl chloride (CPVC) piping systems. These fittings are essential for branching pipelines in plumbing, industrial, and chemical applications, ensuring leak-proof connections and efficient fluid distribution. The mold must meet stringent quality standards to produce durable, dimensionally accurate, and chemically resistant fittings. 1. Mold Design & Structure The mold consists of multiple components, typically made from high-grade tool steel (e.g., P20, H13) or stainless steel, hardened to withstand high-pressure injection molding cycles. Key parts include: - Cavity and Core: Forms the internal and external contours of the tee fitting. The cavity shapes the outer surface, while the core defines the inner diameter and threading for the female ends. - Sliders and Lifters: Enable undercut features like threading or grooves, retracting post-molding to release the part. - Cooling Channels: Integrated to regulate temperature, ensuring uniform cooling and minimizing warpage. - Ejection System: Uses pins or plates to push the solidified fitting out without damage. 2. Precision & Features - Thread Accuracy: Female threads must comply with standards (e.g., NPT, BSP) to ensure compatibility with male fittings. Threads are machined via CNC or EDM for consistency. - Wall Thickness Control: Critical for pressure resistance; the mold ensures even material distribution. - Surface Finish: Polished to a smooth finish (Ra ≤ 0.8 µm) to prevent sticking and improve part aesthetics. 3. Manufacturing Process 1. Material Selection: CPVC resin (heated to ~200°C) is injected into the mold under high pressure. 2. Injection & Cooling: The molten CPVC fills the cavity, cools uniformly, and solidifies. 3. Ejection & Finishing: The part is ejected, and excess material (flash) is trimmed. Threads may be verified via gauges. 4. Quality Assurance - Dimensional Checks: Calipers and CMMs validate critical dimensions. - Pressure Testing: Sample fittings undergo hydrostatic tests to confirm durability. - Material Testing: Ensures chemical resistance (per ASTM standards) and thermal stability. 5. Applications & Durability The mold produces fittings for hot/cold water systems, industrial chemical transport, and fire sprinklers. Its robust design supports high-volume production (50,000+ cycles) with minimal wear. Conclusion A CPVC female tee pipe fitting mold combines advanced engineering, precision machining, and rigorous testing to deliver reliable, standardized fittings. Its efficiency and accuracy are vital for maintaining the performance and safety of CPVC piping networks. (Word count: 500)