Deseret evening news. [volume] (Great Salt Lake City [Utah]) 1867-1920, 1899-11-16
CONVERTING IRON FOR USE.
,,, description Of the Process OF the Manufacture OF
'Ha'''"' Steel for Building Construction.

two 10 thren heats per day are made,
The charging DO automatic, and upon
the opposite aido OF the furnace from
which the metal b. tapped. the Stag be-
lnr drawn IN from q separate tap.hoic.
The Same chemical process lu burning
out the impusltlca takes place lu the
opcn-hcarth furnace na IN TN loracmcr
converter except that the combustion
~ the carbon d. not made complete.
but stops when the proper amount la
found Co. Boz contained in the mixture.
uoccHaltatlug re- slower operation. thus
Swing ample time 60 take tests. and Co.,.
surfing RI uniform product The molten
steel when found satisfactory ln come
position. la run from the furnace
through a tnp-holo into large ladlo.
which 10 turn pnurH lta contents into
insut mOlds similarly To that formerly
explained iu the iicssomor process. toet
casts being taken for chemical anulY-
alf, and the heat number carefully &C.
INGoTs.
We have now O. general oversight ~
The manufacture NJ steel from The ore
tu che material in The moldr. called steel
lnTnta. which material does not diner
in lia chemical composition from that 81
the finished product and ns described.
can De- either of The HoHacmrr or opUn-
hcHrth manufacture
Those molda into which the steel was
poured o. NOW transported 90 % ma
chime chllfd "the afripp,r" which ls
nn hydraulic RAIN. aud forcos the partly
cooled steel (which has taken the In
t,tior form of the mold from its sur
f1uudlurH. the empty mold being again
placed on ears and carried back 10 the
converter house or opon-hcatth depart
mont. 10 be- nlled anew.
The lurot which atill retains large
percentage of lta initial heat. ia not
allowed tu cool entirely but iH lmfnt-
diatoiy transferred Ca the various roll
llur.mlll departments, Co be- rc-hr1tei
prior to being rolled 20 tho desired
shape. The partly cooled lngota are
nov placed into the rc-hohtlng furnaces.
or soaking pits. ana allowed 10 remain
until uniformly heated throughout MS
wril ns a. piVo the temperature nrCus-
Hnry 60 ohtnln tho best results M rolling.
Having nttainet this temperature. it is
extracted automatically from the fur
mace and carried 90 the feed table Of the
rolling mill.
ROLLING MILLS.
Here we shall have to make slight
stop ln the process OF the manufacture.
aud rny few words ON rolling mills.
Rolling mills. devised f0r the purpose
of COMPRISING. clonEatlnE, ana nuhlly
forming tho inrut into the desired
shape are generally distinguished by
the name ~ that product which thcy
are designed to roll They diner ma
tpflaiIy ln mechanical structure. rruul-
orni design We have. fur example.
blooming mills. rail ana billet mills bar
mills. cugEnE mills, shape or beam
mills. rlnbhuF mills. plate ana universal
ulitc mills. blooming. cugElng, and
rlnbblug mills being the preparatory
mills 10 rolling the finished rail. shape
or plate. respectively In these mills
the steel obtains its FIRST working, 10 be-
subsequently Transferred automatically
tu the rail- billet. or bar mill for manu-
featuring rails. blllets. or barf. the
shape mill Tor manufacturing beams or
other shapes. and the plate mill or uni-
Vcraai plate mill Tor the manufacture u
plates. n u evident from the foregoing
that the same mill cannot De- used Tor
the manufacture ~ the various classes
of finished products, nor can We even
use With economy the same min for ar
fcrcnt alsca of the same product. ~.
fot example. We have Tor rolling beams,
three separate shape mills, Tor rails.
two separate rail mills. and Tor plates,
dix different plate mills, therefore I'M
mCnHc plants are necessary 10 toll all
sections that may be called Tor,
tiut let uH return 10 the lngot which
We have LETT ON the feed table, ready
! tn be- rolled lu IN" preparatory mill |
am afraid. however that our insul u
already rolled into finished beam, but
W.. viii not have Go wait long before
another comes along. ana this we VIII
/ follow In ita different puHaeH thruurh
/ the rolls You win notice that the size
| of this inEot IL about sixteen Inches
| hy sixteen inches. cross section, ana
] about elk feet lang. 10 lH already being
passed backward and forward through
/ the massive rolls. aud turned automnti-
! Ideally Go conform Co the wishes NJ the
| chief roller u how has the shape ~ "a
] clumsy looking l-bvam. aud IL helnF
| Transferred tn the shape mill hv means
] OF nn electrically controlled feed table.
! Tho shape mill d. generally composed OF
/ four sets uf mills. each having three
] rolls nct vertically above one another,
| and an driven by an engine placed al
| one end of the series Of rullA, che rolls
| themselves acting ne shafts TO drive
| those not connected direct Ne can be
| seen after leaving the cugElng or pro
| patatnrv min Il requires twelve dlncr-
| ont aizcd cnlibrc openings or passes In
| order so coll tho bcam 60 ita desired
/ shape the last or finishing pass giving
| tho beam the exact shape ana weight of
/ section specified.
! IL is evident that Tor every different
| fIze beam channel or other shape.
/ the entire set of rolls, from the cngglng
] mill 60 the finishing tolla,. must be-
/ changed; that ia, tho rolls and COUP
U