Difficulty: Easy
Correct Answer: Agree
Explanation:
Introduction / Context:
Manufacturing engineers must distinguish between similar-sounding sheet-metal processes. Perforating, punching, piercing, blanking, nibbling, and slotting create different features and patterns, and the correct term matters for tooling, costing, and quality planning.
Given Data / Assumptions:
Concept / Approach:
Perforating is the punching of multiple, closely spaced holes, often small, in a systematic pattern across an area. It differs from single-hole piercing (isolated holes), from blanking (cutting the perimeter to separate a part), and from nibbling (progressively removing material with overlapping punches to approximate complex outlines).
Step-by-Step Solution:
Define target feature: many holes in regular array.Map to terminology: this is “perforating.”Confirm distinct from nibbling and slotting by pattern and outcome.
Verification / Alternative check:
Standards and press-shop handbooks classify perforated sheets by hole size, pitch, open area percentage, and pattern (staggered, straight row), aligning with the stated definition.
Why Other Options Are Wrong:
Disagree: contradicts established terminology; Nibbling creates approximate contours rather than regular multi-hole arrays; Slotting forms elongated slots, not arrays of circular holes; Hole diameter variability is not required to call it perforating.
Common Pitfalls:
Confusing perforating with laser drilling or waterjet processes; mixing up blanking (part removal) with punching (scrap removal).
Final Answer:
Agree
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