Material Analysis
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ASA electrical housing weathering sampling failed
Fenómeno do problema
ASA outdoor electrical housing weathering sampling shows yellowing index exceeding the standard; products of the same batch with different furnace numbers perform very differently, causing responsibility disputes between supplier and processor.
Análise das causas
Material batch weathering performance fluctuations and processing process thermal history jointly affect product weathering resistance; overheated processing batches have damaged rubber phase and reduced weathering; lack of thermal history records makes responsibility definition difficult.
Solução
①Establish material batch and process parameter traceability records; ②control processing thermal history to avoid rubber phase damage; ③weathering sampling covers different batches; ④supplier and buyer agree on weathering acceptance test methods.
Conclusão principal
ASA weathering quality is a joint product of material and process; thermal history traceability records are key evidence for responsibility definition; prior agreement on acceptance methods avoids disputes.
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