Problema e solução

Respostas práticas para os desafios comuns dos materiais plásticos

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Q

ABS discoloration yellowing

A

For ABS yellowing check heat history, butadiene oxidation is the root; 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 for similar problems later

Processing Machinery discoloration oxidation regrind color masterbatch

Q

ABS bubble

A

ABS bubbles are divided into three types, distribution points to the cause; 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 for similar problems later

Material Drying bubble moisture degradation shrinkage void

Q

ABS flash

A

For ABS flash reduce pressure first, clamping and parting line checked afterward; 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 for similar problems later

Injection Molding flash clamping parting line pressure

Q

ABS sink mark and shrinkage void

A

For ABS sink mark check wall thickness and rib thickness first, holding pressure feeding follows; 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 for similar pr...

Molds & Tooling sink mark shrinkage void wall thickness holding pressure

Q

ABS weld line strength

A

ABS weld line strength is discounted, three moves of temperature, relocation, and overflow well; 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 for similar pro...

Molds & Tooling weld line convergence strength overflow well

Q

ABS burnt multiple factors

A

ABS burnt has four factors, check venting, temperature, speed, and nozzle one by one; 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 for similar problems later

Injection Molding burnt venting melt temperature nozzle

Q

ABS silver streak misjudged as venting

A

For ABS silver streaks look at distribution first, overall random means moisture; 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 for similar problems later

Material Drying silver streak misjudgment moisture distribution

Q

ABS unmelted material

A

Screw and temperature are the main causes of ABS unmelted material; plasticization quality is the core; assessment ensures equipment matching.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery ABS; unmelted; screw; temperature; plasticization; particle

Q

ABS stress cracking

A

Internal stress and media are the mechanism of ABS stress cracking; annealing is an effective countermeasure; assessment ensures application safety.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Extrusion & Post ABS; stress cracking; internal stress; chemical media; annealing; assembly

Q

ABS black speck thermal decomposition

A

Temperature and residence are the main causes of ABS black speck; equipment and purging are both important; monitoring prevents degradation.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence

Processing Machinery ABS; black speck; thermal decomposition; 280℃; residence; purging

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