Question
Download Solution PDF400 mm व्यास के वेल्लक(रोल) वाले दो-उच्च मिल का उपयोग करके एक पट्टी को 36 mm से 20 mm की मोटाई तक वेल्लित किया जाना है। बिना सहायता बाइट के लिए घर्षण के गुणांक का अनुमानित मान______ होगा:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The relationship between reduction or draft, coefficient of friction and radius of rolls is as follows:
where, Δ h = Reduction or draft = (hinitial) - (hfinal)
R = Radius of rolls, μ = Coefficient of friction
Calculation:
Given:
Given, hi = 36 mm, hf = 20 mm, D = 400 mm ⇒ R = D/2 = 200 mm
Δ h = (36-20) =16 mm
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