Full resolution (JPEG) - On this page / på denna sida - VI. Mining and Metallurgical Industry. General Survey. By C. Sahlin - 2. Iron and Steel Industry. By J. A. Leffler
<< prev. page << föreg. sida << >> nästa sida >> next page >>
Below is the raw OCR text
from the above scanned image.
Do you see an error? Proofread the page now!
Här nedan syns maskintolkade texten från faksimilbilden ovan.
Ser du något fel? Korrekturläs sidan nu!
This page has never been proofread. / Denna sida har aldrig korrekturlästs.
the manufacture of wrought iron.
289
finally there was arranged behind the hearth a heating chamber for the pig
iron. The latter was in that chamber preheated to redness with the combustion
gases proceeding from the hearth, before it was pushed down into the hearth to
be smelted.
These arrangements effected a great saving in fuel and time as compared
with the German and the Walloon processes.
Lancashire Hearth.
In Sweden the new forging process particularly attracted the attention of
G. Ekman. He undertook several journeys to England in order to study it, he
called in English smiths, and made experiments, first at the Söderfors Works
in 1831, and then on a larger scale at the Liljendahl Works in 1836. From
this time this process, which was designated lancashiresmide, and which has
played, and still plays, an important part in the Swedish iron industry, may be
considered to have got itself established in Sweden.
The accompanying figure shows the look of a Lancashire hearth with 2
tuyeres.
The hearth has sometimes one, more rarely three, frequently two tuyeres,
placed opposite one another, on either side of the hearth. The blast pressure
19—133179. Sweden. 11.
<< prev. page << föreg. sida << >> nästa sida >> next page >>
