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Copper Wire Drawn Through a Drawplate
Wire is pulled, not rolled: a tapered rod is drawn through a hardened steel plate with a row of shrinking holes, one hole at a time, getting thinner and longer each pass. Drawing hardens copper, so it is annealed every few holes. Jewellers and electricians' forebears made all their wire this way.
中级
Half a day
说明
1
1
Make a rod
Make a rod
Forge cast copper into a round rod a little larger than the drawplate's largest hole, annealing as it stiffens.
此步骤所需材料：
铜锭100 克
水10 升所需工具：
铁砧
横向楔头锤
丙烷喷灯
铁匠钳
淬火水桶2
2
Taper the end
Taper the end
File the first 2 cm of the rod to a long taper so it pokes through the hole.
所需工具：
锉刀套装
台虎钳3
3
Set up the plate
Set up the plate
Clamp the drawplate in the vise with its tapered side facing you. Rub beeswax on the rod as lubricant.
此步骤所需材料：
蜂蜡5 克所需工具：
钢制拉丝板台虎钳4
4
Draw
Draw
Push the taper through the first hole that it does not slip through, grip it with the draw tongs and pull it through in one steady pull, straight out from the plate.
所需工具：
拉丝钳钢制拉丝板
皮革工作手套5
5
Next holes, and anneal
Next holes, and anneal
Draw through each smaller hole in turn. Every three or four holes, coil the wire, anneal it to a dull red and quench.
所需工具：
丙烷喷灯
耐火砖淬火水桶6
6
Measure and coil
Measure and coil
Stop at the size you need, measured with the caliper. Clean, coil and anneal for soft wire.
所需工具：
6 英寸数显卡尺7
7
Troubleshooting
Troubleshooting
Wire drawing troubleshooting.
Flow
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