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Why ABS Plastic Molded Products Crack
2024-04-12 11:03:01
The cracking issue of ABS resin molded products can be classified into the following three representative types based on visual inspection of the fracture surface. Its failure modes provide important information for investigating the causes and implementing measures to solve the problem.
1.Fracture surface whitening → Ductile fracture
- Ductile fracture surfaces exhibit undulations and irregularities, characteristic of a fibrous mode of fracture.
- Ductile fractures occur only when subjected to forces greater than the strength of the raw material, meaning they are solely caused by excessive external forces.
2.Fracture surface without whitening → Brittle fracture
- The characteristic feature of brittle fracture is stress corrosion cracking. The fracture surface exhibits no undulations and remains smooth.
- Brittle fractures occur due to a combination of forces (stress) smaller than the strength of the material being used and various factors (such as chemicals, temperature, coating, electroplating, application of external forces, etc.).
3.Fracture surface displaying shell patterns → Fatigue failure
- It exhibits the characteristic shell patterns of fatigue fractures.
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