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Shear Steel: Blister Bars Faggoted and Welded, Ure 1839
Blister steel from the cementation furnace is uneven. Ure (1839) describes shear steel, named after the cloth shearers' shears made from it: four bars bound into a faggot with a fifth as a handle, welded under the hammer and drawn out. It polishes finer and is tougher and more even; too many heats turn it back towards iron.
The picture: our diagram of the faggot and the welded bar.
高级
A day
说明
1
1
Make the faggot
Make the faggot
Break the blister steel into four bars of equal length and lay them side by side with a fifth of double length whose end sticks out as a handle. Bind them tight with rings of iron rod.
此步骤所需材料：
泡钢条5 个
熟铁圆棒1 m所需工具：
铁砧剁刀
横向楔头锤
铁匠钳
电焊手套
安全眼镜2
2
Welding heat
Welding heat
Bring the faggot to a full welding heat in the forge, sprinkling it with fine sand so a film of slag protects the surface.
此步骤所需材料：
细砂0.2 公斤
木炭10 公斤所需工具：
铁匠炉铁匠钳电焊手套安全眼镜3
3
Weld it
Weld it
On the anvil, strike it down on both sides at once, the striker with the sledge, until the bars have united. Knock off the rings at the next heat.
所需工具：
铁砧
大锤横向楔头锤铁匠钳电焊手套安全眼镜4
4
Draw to a plate
Draw to a plate
Draw the welded bar out into a plate of even thickness, using as few heats as you can, and finish the faces with the flatter.
所需工具：
铁匠炉铁砧大锤
平锤垫铁铁匠钳电焊手套安全眼镜5
5
Plate size
Plate size
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