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Mild Steel Bar Stock Forged from an Ingot
Mills roll steel ingots into bar between grooved rolls. Before rolling mills, and in any forge today, the same shapes are drawn out by hand: cut a billet from a low-carbon (mild) steel ingot, heat it, and hammer it longer and thinner, square first; then eight-sided and round in a swage block for round bar and rod, or flattened for flat bar.
Hand-forged bar is not as exact as rolled bar: measure it and allow for that. Mild steel does not harden when cooled in air, so the bar is left to cool on its own.
高级
A day per few metres
说明
1
1
Where the ingot comes from
Where the ingot comes from
The ingot must be low-carbon (mild) steel.
2
2
Light the forge
Light the forge
Build a deep, clean charcoal fire in the forge with the air on.
此步骤所需材料：
木炭10 公斤所需工具：
铁匠炉3
3
Cut billets
Cut billets
Heat the ingot to a yellow heat and cut billets from it on the hot-cut hardy, striking with the sledgehammer. Wear apron, gloves, glasses and ear protection.
此步骤所需材料：
钢锭5 公斤所需工具：
铁砧剁刀
大锤
铁匠钳
铁砧
皮革围裙
电焊手套
安全眼镜
护耳罩4
4
Draw out square
Draw out square
Heat a billet to yellow. Hammer it on the anvil face, a quarter turn after every few blows, so it stays square as it lengthens. Return it to the fire when it cools to red; never let it spark white.
所需工具：
铁匠锤铁匠钳铁砧铁匠炉5
5
Square bar
Square bar
For square bar, stop at the size you need and true the faces under the flatter.
所需工具：
平锤垫铁大锤
6 英寸数显卡尺6
6
Round bar and rod
Round bar and rod
For round, knock the square's corners down to eight sides, then turn it in the swage block's round groove under the hammer until round. Smaller grooves give rod.
所需工具：
型砧块铁匠锤6 英寸数显卡尺7
7
Flat bar
Flat bar
For flat bar, draw the square wider and thinner on its edge and face, then smooth it with the flatter.
所需工具：
压槽铁（fuller）平锤垫铁大锤6 英寸数显卡尺8
8
Straighten and cool
Straighten and cool
At a low red heat, sight along the bar and tap it straight on the anvil. Lay it on the floor to cool in still air.
所需工具：
铁匠锤
直尺规9
9
Clean and measure
Clean and measure
Wire-brush off the scale, cut to length, and record each bar's size and length.
所需工具：
钢丝刷套装6 英寸数显卡尺
卷尺10
10
Troubleshooting
Troubleshooting
Drawing out troubleshooting.
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