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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