UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
IBIRIBWA N'IBINYOBWA
UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
IKORANABUHANGA
IBYAMBARWA
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.
Hejuru
A day
Amabwiriza
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.
Ibikoresho by'iyi ntambwe:
Ibyuma by'icyuma gifite amafuro5 ibice
Inkoni y'icyuma gicuzwe1 mIbikoresho bikenewe:
Icyuma gikata ku ngoyi
Inyundo ifite umutwe utambitse
Amafashi y'umucuzi
Uturindantoki two gukomeza ibyuma
Amadarubindi y'umutekano2
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.
Ibikoresho by'iyi ntambwe:
Umusenyi Muto0.2 kg
Amakara10 kgIbikoresho bikenewe:
Uruganda rw'umucuziAmafashi y'umucuziUturindantoki two gukomeza ibyumaAmadarubindi y'umutekano3
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.
Ibikoresho bikenewe:
Ingoyi
Inyundo niniInyundo ifite umutwe utambitseAmafashi y'umucuziUturindantoki two gukomeza ibyumaAmadarubindi y'umutekano4
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.
Ibikoresho bikenewe:
Uruganda rw'umucuziIngoyiInyundo nini
Igikoresho cy'umucuzi cyo kuringanizaAmafashi y'umucuziUturindantoki two gukomeza ibyumaAmadarubindi y'umutekano5
5
Plate size
Plate size
Gupakira ikaye ya Jupyter…
Ibikoresho
4- Umwanya
- Umwanya
- 0.2 kgUmwanya
- 10 kgUmwanya
Ibikoresho bikenewe
9- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
- Umwanya
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