Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

Explorar artigos →

Q

PEI Flash

A

The clamping force calculation for PEI high-pressure processes cannot be omitted; 50MPa specific pressure is a clear standard; mold maintenance prevents gap widening.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Injection Molding PEI;flash;clamping force;50MPa;parting line;wear

Q

PEI Warpage Deformation

A

The 10℃ mold temperature difference in PEI warpage control is a quantitative standard; uniformity takes priority over absolute temperature; design and process are equally important.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PEI;warpage;mold temperature uniformity;10℃;cooling;deformation

Q

PEI Silver Streak Temperature Causes

A

The bidirectional temperature causes of PEI silver streaks need to be verified separately; drying troubleshooting always comes first; smooth and free of silver streaks is a clear standard of normality.; after confirming effectiveness, fix the parameters and practices into the work instruction to ...

Molds & Tooling PEI;silver streak;melt temperature;mold temperature;degradation;cooling

Q

Poor PEI Melt Flowability

A

PEI's high viscosity requires dual guarantees of pressure and runner structure; 80~120MPa is the supplier's guidance range; high-flow grades are a material-level solution.

Injection Molding PEI;flowability;viscosity;injection pressure;runner;thin wall

Q

PEI Internal Stress Cracking

A

PEI internal stress management revolves around high mold temperature; the 217℃ Tg determines the process temperature level; structural rounded corners are the design bottom line.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Molds & Tooling PEI;internal stress;cracking;mold temperature;Tg;annealing

Q

PEI Excessively Fast Freezing and Insufficient Filling

A

PEI's fast freezing is a double-edged sword of the material: free of sink marks but difficult to fill; high mold temperature and fast injection are the correct countermeasures; raising melt temperature is the wrong path.; after confirming effectiveness, fix the parameters and practices into the w...

Molds & Tooling PEI;fast freezing;filling;mold temperature;runner;short shot

Q

PEI Melt Temperature Too High Degradation

A

PEI's 382℃ discoloration line is a clear supplier warning; raising mold temperature instead of melt temperature is the correct path to solve filling; temperature-sensitive materials are strictly prohibited from trading temperature for volume.

Molds & Tooling PEI;melt temperature;degradation;382℃;discoloration;silver streak

Q

Improper PEI Drying Temperature

A

PEI drying temperature is narrow-window management; pre-crosslinking is a specific failure of excessive high temperature; grade-differentiated settings cannot be one-size-fits-all.; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Material Drying PEI;drying temperature;pre-crosslinking;grade;dehumidification;window

Q

PEI Insufficient Drying Bubbles and Silver Streaks

A

PEI's 0.02% moisture content red line is stricter than most engineering plastics; a dehumidifying dryer is an essential configuration; the 10-minute rule for secondary moisture absorption must be enforced on site.

Material Drying PEI;drying;bubble;silver streak;0.02%;hygroscopic

Q

PEEK Semi-Crystalline Structure Maintenance

A

PEEK performance is anchored in the semi-crystalline structure; cooling consistency is the quality bottom line; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference ...

Molds & Tooling semi-crystallinecooling consistencyprocess changeverification

Anterior 1 ... 795 796 797 798 799 800 801 ... 1164 Seguinte

Categorias

Todos os tópicos 11636 Material Drying 1439 Injection Molding 1506 Molding Process 740 Molds & Tooling 1506 Processing Machinery 2025 Extrusion & Post 2239 Blow Molding 315 Thermoforming 141 Material Analysis 1343 Production & Quality 382