fluoro熱塑料導(dǎo)線擠壓涂層(編輯修改稿)
2025-01-18 23:36 本頁面
【文章內(nèi)容簡介】 Tubing ? Why tube extrusion? A 3M Company Melt fracture Smooth surface ?Shark skin? Extruded film Tubing A 3M Company Tooling DDR B a la n c e L a n dF E P 1 0 0 1 2 0 1 . 0 1 2 c mPFA 70 1 . 0 1 2 c mE T F E 2 0 4 0 1 . 0 1 2 c mT H V 2 0 4 0 1 . 0 1 2 c mA 3M Company Tooling calculations DDR= (DD178。DT178。)/(dCC178。dW178。) DRB= (DD/dCC)/(DT/dW) dC CDDDTdWA 3M Company Cone ? Indicators – Too long ? Diameter variation ? Unstable – Too short ? surface roughness ? sparks/pinholes ? cone breaks – Unstable ? Tip and die not concentric ? Core not centered ? Melt too hot or cold ? Line speed too high ? Remendations – 3040 mm A 3M Company Cooling Trough A irG a pWa t e rte mpT o ta lle n g t hF E Phi gh s pe e d7 m 7 5 C 2 0 mF E P 2 m 5 0 C 1 0 mPFA 2 m 5 0 C 1 0 mE T F E 2 m 5 0 C 1 0 mA 3M Company Capstan ? Cold water spray typical ? Grooved sheaves preferable over stationary guides A 3M Company Gauges/Indications ? Line tension – gauge of instability – Identify conductor damage ? Inner (copper) diameter – copper size and quality ? Capacitance – crucial for foam – adhesion problems – eccentricity problems – diameter problems A 3M Company Gauges/Indications ? Outer diameter – Product size – Longterm variation – ovality ? Eccentricity – Copper center ? Lump/neckdown – Short term variation ? Spark tester – holes, thin spots A 3M Company Troubleshooting P r i ma r y s y m p t o m S e c o n d a r y s y mp t o m T e r t i a r y s y m p t o m T r o u b l e s h o o t i n gs t e p sO u t e r su r f a ce r o u g h O n e si d e / a sy m m e t r i ca l N o b u b b l e s C e n t e r t h ecr o ssh e a d / co p p e rD e cr e a se co n e l e n g t hR a i se p r e h e a tL o w e r m e l t t e m p e r a t u r eE q u a l i ze m e l t t e m p sb e t w e
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