|
S |
M |
T |
W |
T |
F |
S |
|
|
|
|
1
|
2
|
3
|
4
|
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
|
19
|
20
|
21
|
22
|
23
|
24
|
25
|
|
26
|
27
|
28
|
29
|
30
|
31
|
|
|
|
Forums10
Topics38,506
Posts545,600
Members14,419
| |
Most Online1,344
Apr 29th, 2024
|
|
|
|
Joined: Jan 2006
Posts: 9,427 Likes: 315
Sidelock
|
OP
Sidelock
Joined: Jan 2006
Posts: 9,427 Likes: 315 |
William Wellington Greener, The Gun and Its Development, 1907, 8th Edition, The Manufacture of Iron for Gun Barrels https://books.google.com/books?id=3HMCAA...p;q&f=false The steels suitable (for pattern welded barrels) are open hearth and ingot steels produced by modern methods, if low in carbon. On account of its purity and uniformity, best Swedish steel is most usually preferred.
|
|
|
|
|
Joined: Aug 2007
Posts: 10,815 Likes: 194
Sidelock
|
|
Sidelock
Joined: Aug 2007
Posts: 10,815 Likes: 194 |
How low is low, i.e. what %?
Cheers,
Raimey
rse
|
|
|
|
|
Joined: Jan 2006
Posts: 9,427 Likes: 315
Sidelock
|
|
OP
Sidelock
Joined: Jan 2006
Posts: 9,427 Likes: 315 |
Exactly  And how does this fit with our "the higher the carbon and the harder the steel the better the contrast" narrative Bro. Steve suggested it's not quite that simple.
|
|
|
|
|
Joined: Aug 2007
Posts: 10,815 Likes: 194
Sidelock
|
|
Sidelock
Joined: Aug 2007
Posts: 10,815 Likes: 194 |
I thought you to be the head centrifuge fella and had all the answers. Don't tell me the answer is akin to the limbo skating game, how low can you go?
Cheers,
Raimey
rse
|
|
|
|
|
Joined: Jan 2006
Posts: 9,427 Likes: 315
Sidelock
|
|
OP
Sidelock
Joined: Jan 2006
Posts: 9,427 Likes: 315 |
Prior to "Open Hearth" steel, the wrought iron components were scrap horse shoes (Spain) and horse-nail stubs, ox irons; steel, worn scythes, old chain, broken coach-springs, and Soft steel, which is decarbonized in the course of manufacture (likely Bessemer).
The sources of nail stubs were exhausted by the mid-1800s, and in the 1881 3rd Edition of Greener's The Gun he states that scrap iron and steel were no longer being used for barrels.
The 1891 study on page 4 lists structural steel and chain as having .2 - .25 carbon. Vickers was listed as .24 - .27%.
|
|
|
|
|
Joined: Dec 2001
Posts: 12,743
Sidelock
|
|
Sidelock
Joined: Dec 2001
Posts: 12,743 |
How low in carbon were those scythes & coach springs. It would seem a low carbon steel would not be very satisfactory for either purpose. It would seem a man with a low carbon scythe would spend far more time sharpening than scything while a low carbon coach spring would more likely just lose its arc rather than break. o et ansping at all it would have to be very thick & heavy for its purpose.
Miller/TN
I Didn't Say Everything I Said, Yogi Berra
|
|
|
|
|
Joined: Jan 2006
Posts: 9,427 Likes: 315
Sidelock
|
|
OP
Sidelock
Joined: Jan 2006
Posts: 9,427 Likes: 315 |
Miller: up until introduction of the Bessemer process in the 1850s, the steel was "Cast steel"; the Huntsman hot-rolled crucible steel process of 1742 used for farm implements (like the L.C. Smith  ). To form a pipe or barrel, a sheet was folded over a mandrel and the long edge hammer welded, leaving a "seam", lest Wonko has forgotten  Basic Bessemer had a C of .07 - .09%, but the 1881 study on the previous page lists .15 - .55%. The Darby method of carburization was invented in 1890 to add carbon to steel, but there were earlier techniques https://books.google.com/books?id=Fec9SNazAnwC&pg=PA61&lpg
|
|
|
|
|
Joined: Jan 2006
Posts: 9,427 Likes: 315
Sidelock
|
|
OP
Sidelock
Joined: Jan 2006
Posts: 9,427 Likes: 315 |
The rare and exotic Crescent for Sears "Wilson's Welded Steel" has arrived 
|
|
|
|
|
Joined: Aug 2007
Posts: 10,815 Likes: 194
Sidelock
|
|
Sidelock
Joined: Aug 2007
Posts: 10,815 Likes: 194 |
 Welding Engineer 1922 Was the Wilson in question the above? Cheers, Raimey rse
|
|
|
|
|
