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Tuyere Iron: a Slotted Grate Cast in Grey Iron
The tuyere is the opening in the bottom of the forge fire through which the blast is blown. Bacon (1919): its openings must let the blast through easily while keeping cinders from dropping into the blast pipe, and there should be a way to open the pipe below and clear out the cinders that still get through. This one is a slotted grate over a socket for the blast pipe, cast in grey iron. The design and sizes are ours.
The picture: our drawing.
高级
2 days
说明
1
1
Make the pattern
Make the pattern
From pine, make a pattern of a square plate about 15 cm across and 2 cm thick with four or five narrow slots, and a short round socket under its centre to take the blast pipe. Taper every side slightly so it draws from the sand.
所需工具：
松木板
钢丝锯（曲线锯）
木工凿子套装
木工胶
6 英寸数显卡尺2
2
Ram the mould
Ram the mould
Ram the pattern up in casting sand in the flask, draw it out, and cut a sprue and a runner to the cavity.
所需工具：
铸造砂
铸造砂箱
手铲3
3
Melt the iron
Melt the iron
Melting pig iron in the cupola and tapping it into the ladle.
4
4
Pour
Pour
Pour the molten grey iron from the ladle into the sprue in one steady stream until the mould is full; about 4 kg with the sprue (our estimate). Let it cool in the sand.
此步骤所需材料：
生铁锭4 公斤所需工具：
铸造浇包铸造砂箱
电焊手套
皮革围裙
面屏5
5
Clean up
Clean up
Shake out the casting, cut off the sprue, grind the fins and brush off the sand. Check that every slot is clear.
所需工具：
角磨机
钢丝刷套装电焊手套面屏6
6
Set it in the forge
Set it in the forge
Set it in the hearth with the blast pipe in its socket and a way to open the pipe below for clearing cinders. Richardson's forge had its tuyere iron four inches below the hearth surface.
所需工具：
6 英寸数显卡尺此蓝图制作
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