웹2015년 7월 15일 · Fig: Push-bar drawing frame Mathematical Problems of Push Bar Drawing in Jute Spinning. Problem: 1 A high-speed push bar D/F with 2 heads, 2 delivery/head, doubling 2:1, Produces 600 lbs/ hr of 8 lbs/100 yds sliver. Draft 4, the pitch of the faller bar = ½”, faller bar lead = 10%, calculate the faller bar drops/min. 웹2016년 12월 20일 · Drawing is a metalworking process which uses tensile forces to stretch metal. As the metal is drawn (pulled), it stretches thinner, into a desired shape and thickness. Drawing is classified in two types: sheet metal drawing and wire, bar, and tube drawing. The specific definition for sheet metal drawing is that it involves plastic deformation over a …
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