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Question: c annealed 3 mm diameter stainless steel wire is drawn...

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(c) Annealed 3 mm diameter stainless steel wire is drawn through a die at a 2 m/s to form a wir e of cross-sectional area 5 mm?. The dies have an included angle of 12o and a commercial oil-based lubricant is used. Calculate the draw force Assuming steady-state conditions, the draw stress ơexit can be calculated by using: where 0-0.88 +0.12 Ơfm is the mean flow stress DATA: The friction coefficient between workpiece and die, For stainless steel, K = 1300 MPa and n = 0.3 H 0.04 [10 marks]
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