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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.
Osezingeni eliphezulu
A day
Imiyalelo
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.
Izinto zokwakha zalesi sinyathelo:
Izinduku zensimbi enamabhamuza5 izicucu
Induku yensimbi ekhandiwe1 mAmathuluzi adingekayo:
Isisiki esimiswa ensimbini yokukhandela
Isando esinekhanda elimise okwesikhonkwane
Udlawu lomkhandi wensimbi
Amagilavu okushisela
Izibuko zokuphepha2
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.
Izinto zokwakha zalesi sinyathelo:
Isihlabathi Esicolekile0.2 kg
Amalahle10 kgAmathuluzi adingekayo:
Iziko lomkhandi wensimbiUdlawu lomkhandi wensimbiAmagilavu okushiselaIzibuko zokuphepha3
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.
Amathuluzi adingekayo:
Insimbi Yokukhandela
Isando esikhuluIsando esinekhanda elimise okwesikhonkwaneUdlawu lomkhandi wensimbiAmagilavu okushiselaIzibuko zokuphepha4
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.
Amathuluzi adingekayo:
Iziko lomkhandi wensimbiInsimbi YokukhandelaIsando esikhulu
Ithuluzi lokwenza kube yisicabaUdlawu lomkhandi wensimbiAmagilavu okushiselaIzibuko zokuphepha5
5
Plate size
Plate size
Ilayisha incwadi ye-Jupyter…
Izinto
4- 5 izicucuIsibambeli
- Isibambeli
- 0.2 kgIsibambeli
- 10 kgIsibambeli
Amathuluzi Adingekayo
9- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
- Isibambeli
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