Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

Contamination by Decomposed Material After PSU Shutdown

A

The core of PSU shutdown management is thorough removal of decomposed material; the choice of purging material is particular; the purge amount when resuming production must be sufficient.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent ...

Molds & Tooling PSU; shutdown; decomposition; cleaning; impurities; purging

Q

PSU Nozzle Drool and Cold Slug

A

The high-viscosity characteristic of PSU allows large-orifice nozzle design; extended heated nozzles are standard; fine temperature management avoids both extremes.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence

Molds & Tooling PSU; nozzle; drool; cold slug; extended type; orifice

Q

Improper Screw Configuration for PSU

A

PSU screw configuration has clear industry specifications; low speed protects the high-viscosity melt; precision wear-resistant configuration is the foundation of long-term stability.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recu...

Processing Machinery PSU; screw; compression ratio; rotation speed; plasticization; configuration

Q

PSU Internal Stress Difficult to Eliminate

A

Internal stress management is the fate of rigid, fast-cooling materials like PSU; high mold temperature and annealing are the two pillars; stress cracking verification must simulate the actual environment.; After confirming effectiveness, solidify the parameters and practices into the work instru...

Material Analysis PSU; internal stress; cracking; annealing; mold temperature; rigidity

Q

PSU Melt Fracture and Mold Filling Difficulty

A

PSU filling speed is limited by the melt fracture ceiling; temperature and structural compensation are more effective than forcibly increasing speed; a flow length ratio of 80 is a design constraint.; After confirming effectiveness, solidify the parameters and practices into the work instructions...

Injection Molding PSU; melt fracture; injection speed; mold filling; flow length ratio; wall thickness

Q

PSU Decomposition Due to Excessive Melt Temperature

A

The double-edged sword nature of PSU temperature management is distinct; the sharp viscosity drop near 330°C is both an opportunity and a trap; ±5°C temperature control accuracy is a hard requirement.; After confirming effectiveness, solidify the parameters and practices into the work instruction...

Material Analysis PSU; melt temperature; decomposition; carbonization; viscosity; temperature control

Q

PSU Insufficient Drying Causing Silver Streaks and Bubbles

A

The destructive power of trace moisture in PSU is amplified at high temperatures; drying verification is the first gate for transparent part quality; appearance defects and performance decline often share the same source.; After confirming effectiveness, solidify the parameters and practices into...

Material Drying PSU; drying; silver streaks; bubbles; moisture; degradation

Q

Automated Production of PS Products

A

Automation is the direction for quality stability; reduce human variables.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference for troubleshooting similar problems in the fu...

Processing Machinery PS; automation; consistency; robot; traceability

Q

Molding Cycle Optimization for PS Products

A

Cycle optimization needs data support; cooling calculation is the scientific basis.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference for troubleshooting similar problems ...

Processing Machinery PS; cycle; cooling; optimization; cooling channels

Q

Wall Thickness Design of PS Products

A

Structural design is the starting point of defect prevention; uniformity and gradual transition are the principles.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence; Include this case in the defect archive as a reference for t...

Processing Machinery PS; wall thickness; design; stress concentration; uniformity

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