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Iron Tube: Butt-Welded by Drawing Through Dies on a Draw Bench (Whitehouse, 1825)
Cornelius Whitehouse's way of making welded iron tubes, the basis of butt-weld pipe ever since: a strip of flat iron is turned up into a tube with its edges meeting, heated nearly to fusion in a hollow fire, and pulled by the chain of a draw bench through a pair of dies, which press the hot edges together and weld them.
The tube is welded in two halves, one end at a time. Whitehouse made tubes 2 to 8 ft long in one piece, smooth inside and out.
Unknown: plate thickness, width and tube sizes. The source does not give them.
Source: Whitehouse's specification of 1825, quoted in C. D. Terry, Butt Weld Pipe (1907). Picture: Terry's Figs. 4 and 5.
Abantado
Unknown
Mga Tagubilin
1
1
Turn the plate over
Turn the plate over
Take a piece of flat iron (plough-plate iron) of a thickness and width to suit the intended bore. Bend up its sides ('turn it over') until the edges meet, or nearly so, and it forms a long tube. Ours: hammer and anvil for the bending.
Mga materyales para sa hakbang na ito:
Mga bareta ng pinandayang bakal1 flat plough-plate iron
Hindi alam na sukat1 pirasoMga kailangang kasangkapan:
Martilyong Pampanday
Patag na palihan2
2
Heat in the hollow fire
Heat in the hollow fire
Put the tube into a hollow fire, urged by a blast, and heat it until the iron is on the point of fusion. Ours: a smith's forge as the hollow fire.
Mga kailangang kasangkapan:
Pandayan ng panday
Sipit ng Panday3
3
Draw it through the dies
Draw it through the dies
Clamp the end of the tube to the chain of the draw bench, driven by a hand winch or an engine. Draw it out of the fire through a pair of dies of the size wanted, set in a screw press and closed to their bearing, so that the hot edges are pressed together and welded. A pair of pinchers with a conical hole, held against a standard, may be used instead of the press and dies.
Mga kailangang kasangkapan:
Draw benchSipit ng Panday4
4
Weld the other half
Weld the other half
Open the clamp and take the tube off. Grip the other end, put the unwelded part into the fire, heat it, and draw it through the dies in the same way.
Mga kailangang kasangkapan:
Pandayan ng pandayDraw benchSipit ng PandayMga Materyales
2- 1 flat plough-plate ironPlaceholder
- 1 pirasoPlaceholder
Mga Kinakailangang Kasangkapan
5- Placeholder
- Placeholder
- Placeholder
- Placeholder
- Placeholder
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