Molding Process
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PVDF Machining Chip Entanglement and Heat Dissipation
Problem Phenomenon
【Problem phenomenon】When CNC machining PVDF, long chips entangle the tool, and local overheating melts the surface and sticks to the tool
Cause Analysis
PVDF has good toughness and poor thermal conductivity (0.17W/m·K); chips are slender and easily entangled, and cutting heat accumulation softens the surface; CS-Seal gives milling 200-400m/min, turning 100-300m/min and recommends compressed air or water-soluble cutting fluid
Solution
Select sharp carbide tools and optimize chipbreaker grooves; machine at recommended cutting speeds; use compressed air or water-soluble cutting fluid for forced heat dissipation; match feed and depth of cut to prevent chip entanglement
Key Takeaway
PVDF machining fears heat rather than cutting; sharp tools plus forced heat dissipation are the key; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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