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Iron Sheet Hammered Out from Bar
Before rolling mills, iron plate for cauldrons and griddles was hammered out of bar by hand. The bar is spread sideways with the hammer's peen, flattened with the face, then planished with a flatter until it is an even sheet two to three millimetres thick.
The picture: a cauldron of riveted iron plates from Vendel, Uppland, Sweden (Swedish History Museum, SHM 7250:XI).
高级
A day
说明
1
1
Heat the bar
Heat the bar
Bring the wrought iron bar to a bright yellow-orange.
此步骤所需材料：
锻铁条1 公斤
木炭1 as required所需工具：
铁匠炉
铁匠钳
电焊手套
安全眼镜2
2
Spread it with the peen
Spread it with the peen
Strike with the cross peen running along the bar, so the grooves push the metal out sideways. Flatten the ridges with the face. Turn it over and repeat. Reheat as soon as it dulls.
所需工具：
铁砧
横向楔头锤铁匠钳电焊手套安全眼镜3
3
Thin it evenly
Thin it evenly
Work outward from the middle, peen then face, until the plate is about 3 mm. Fold nothing: a fold will not weld back flat.
所需工具：
铁匠炉铁砧横向楔头锤电焊手套安全眼镜4
4
Planish with a flatter
Planish with a flatter
With a helper on the sledge, set the flatter on the hot plate and planish the hammer marks out. Check it flat with a straight edge and the thickness with the caliper.
所需工具：
平锤垫铁
大锤铁砧
平直尺
6 英寸数显卡尺电焊手套安全眼镜5
5
Trim the edges
Trim the edges
Cut ragged edges off with a cold chisel on the anvil while it is still warm.
所需工具：
冷錾铁砧横向楔头锤电焊手套安全眼镜6
6
How much sheet a bar gives
How much sheet a bar gives
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