It seems like you’re referring to a hammer crusher and possibly the term “unterattack”, which might be a misspelling or mistranslation. Here’s some relevant information based on common industry terms:
Hammer Crusher Basics
A hammer crusher is a type of impact crusher that uses high-speed rotating hammers to break materials (such as coal, limestone, or gypsum) into smaller pieces. It is widely used in mining, cement, and construction industries.
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# Key Components:
1. Rotor – The rotating part with hammers attached.
2. Hammers (or Blow Bars) – Striking elements that crush the material.
3. Grinding Chamber – Where material is crushed against breaker plates.
4. Screen/Grate Bars – Control the output size by allowing only smaller particles to pass.
Possible Interpretations of “Unterattack”
1. “Under Attack” (Possible Miscommunication)
– If you meant wear or damage due to abrasive materials, hammer crushers can suffer from hammer wear, rotor damage, or liner degradation.
– Solutions: Use hardened hammers (high manganese steel), replace worn parts, or adjust feed size.
2. “Counterattack” (Related to Impact Crushers)
– Some hammer crushers work with counterattack plates (breaker liners) to enhance crushing efficiency.
– Adjusting the gap between hammers and liners can optimize particle size.
3. German Translation (“Unter” = Under, “Attack” = Impact?)
– If referring to a German term, it might relate to an under-rotor impact mechanism.
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Common Issues & Solutions in Hammer Crushers
| Problem | Possible Cause | Solution |
|———|————–|———-|
| Excessive Wear | Abrasive material | Use hardened hammers |
| Vibration | Unbalanced rotor | Check hammer alignment |
| Low Output | Clogged screen/grate | Clean or replace grate bars |
| Overheating | Overloading/blockage | Reduce feed rate |
Would you like more details on a specific aspect of hammer crushers? Let me know how I can refine the answer!