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Shear Steel: Blister Bars Faggoted and Welded, Ure 1839
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14. Oktoba 2026NO
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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.
Juu
A day

Maagizo

1

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.

Vifaa kwa hatua hii:

Nondo za chuma chenye malengelengeNondo za chuma chenye malengelenge5 vipande
Fito ya chuma cha kufuaFito ya chuma cha kufua1 m

Zana zinazohitajika:

Patasi ya kukata kwenye fuawePatasi ya kukata kwenye fuawe
Nyundo yenye kichwa cha msalabaNyundo yenye kichwa cha msalaba
Koleo za mhunziKoleo za mhunzi
Glavu za kulehemuGlavu za kulehemu
Miwani ya usalamaMiwani ya usalama
2

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.

Vifaa kwa hatua hii:

Mchanga lainiMchanga laini0.2 kg
MkaaMkaa10 kg

Zana zinazohitajika:

Fua ya mhunziFua ya mhunzi
Koleo za mhunziKoleo za mhunzi
Glavu za kulehemuGlavu za kulehemu
Miwani ya usalamaMiwani ya usalama
3

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.

Zana zinazohitajika:

FuaweFuawe
Nyundo kubwaNyundo kubwa
Nyundo yenye kichwa cha msalabaNyundo yenye kichwa cha msalaba
Koleo za mhunziKoleo za mhunzi
Glavu za kulehemuGlavu za kulehemu
Miwani ya usalamaMiwani ya usalama
4

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.

Zana zinazohitajika:

Fua ya mhunziFua ya mhunzi
FuaweFuawe
Nyundo kubwaNyundo kubwa
Kisawazishi cha uhunziKisawazishi cha uhunzi
Koleo za mhunziKoleo za mhunzi
Glavu za kulehemuGlavu za kulehemu
Miwani ya usalamaMiwani ya usalama
5

Plate size

Inapakia daftari la Jupyter…

Vifaa

4

Zana Zinazohitajika

9

Mchoro huu unatengeneza

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Kishikilia nafasi

Bamba la feleji ya shear

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Blueprint zinazohusiana

Blueprint hizi zinashiriki maarifa — mbinu, vifaa au kanuni

Making Blister Steel by Cementation — Carburizing Wrought Iron into Steel

Making Blister Steel by Cementation — Carburizing Wrought Iron into Steel

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