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WIRE AND BAR DRAWING
POLIN P PANGGABEAN 1504305064
GEMILANG AYU ISWARI 1504305067
STEFANUS 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 =
𝑨𝑶 −𝑨𝑭
𝑨𝑶
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
 Annealing
 Pickling
 Cleaning
 Phosphating
 Normalisasi Pointing
 Lubrakasi
DRAWING PROCESS
BENCH DRAW
Δ FAKTOR
 Perbandingan antara diameter rata-rata terhadap
panjang daerah deformasi
 Pada wire drawing besarnya Δ faktor :
D : diameter kawat
L : panjang kontak perm. Kawat dan dies
: setengan sudut reduksi
r : reduksi area (%)
APPLIKASI

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Kelompok 4 wire and bar drawing

  • 1. WIRE AND BAR DRAWING POLIN P PANGGABEAN 1504305064 GEMILANG AYU ISWARI 1504305067 STEFANUS DI SALVIO 1504305069
  • 2. 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.
  • 3.
  • 4. Change in size of work is usually given by area reduction: r = 𝑨𝑶 −𝑨𝑭 𝑨𝑶 where, r = area reduction in drawing; Ao = original area of work; AF = area of final work;
  • 5.  BATAS TEMPERATURE : temperature kawat tidak lebih dari 160 ºC  BATAS REDUKSI : Batas reduksi 30 – 35 % dari penampang awal
  • 6. PROSES DRAWING  Annealing  Pickling  Cleaning  Phosphating  Normalisasi Pointing  Lubrakasi DRAWING PROCESS
  • 8. Δ FAKTOR  Perbandingan antara diameter rata-rata terhadap panjang daerah deformasi  Pada wire drawing besarnya Δ faktor : D : diameter kawat L : panjang kontak perm. Kawat dan dies : setengan sudut reduksi r : reduksi area (%)