kelompok 4 wire and bar drawing
Post on 06-Apr-2017
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WIRE AND BAR DRAWING
POLIN P PANGGABEAN 1504305064GEMILANG AYU ISWARI 1504305067STEFANUS DI SALVIO 1504305069
DRAWING PROCESS
Drawing is a cold metal forming process involving pulling a workpiece through a die providing reduction of the cross section of the workpiece.
Change in size of work is usually given by area reduction:
r = where,r = area reduction in drawing;Ao = original area of work;AF = area of final work;
BATAS TEMPERATURE : temperature kawat tidak lebih dari 160 ºC
BATAS REDUKSI : Batas reduksi 30 – 35 % dari penampang awal
PROSES DRAWING
AnnealingPicklingCleaningPhosphatingNormalisasi PointingLubrakasi
DRAWING PROCESS
BENCH DRAW
Δ FAKTORPerbandingan antara diameter rata-rata terhadap
panjang daerah deformasiPada wire drawing besarnya Δ faktor :
D : diameter kawatL : panjang kontak perm. Kawat dan dies : setengan sudut reduksir : reduksi area (%)
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