Page 352 - Content.pmd
P. 352
ThXõe Øû\ (Puddling process) CkR RiÓLs £±V ÕiÓL[ôL
ùYhPlThÓ LhÓdL[ôL LhPlThÓ
©d CÚmûT Ñj§L¬jÕ úR²Úm×
ÁiÓm Tt±ûQdÏm ¨ûXdÏ
RVô¬dLlTÓ¡\Õ.
ùYlTlTÓjRlThÓ ÁiÓm EÚû[VôL
©d CÚmûT Ñj§L¬dÏm úTôÕ, UQp NjÕ EÚhPlTÓm.
ØÝYÕm ¿dLlTÓ¡\Õ. TôvTWØm
BvPu ùNVpØû\ (Aston process)
(phosphorus) ùTÚU[Ü ùY°úVt\lTÓ¡\Õ.
úUÛm LÓeL¬ (graphite) CÚm×Pu Juß CkR ùNVpØû\«p EÚdLlThP ©d
LXkRRôL (combined) Uôt\lTÓ¡\Õ. CÚm×m G@Ï L¯ÜLÞm JÚ ùTv³Uo
(Bessemer converter) Uôtß EûX«p
CkR ùNVpØû\Ls ThXõe EûXL°p
RVô¬dLlTÓ¡u\]. Ñj§L¬dLlThP
(puddling process) ùNVpTÓjRlTÓ¡u\].
EÚ¡V EúXôLm §\kR G¬YôÙ EûX«p
ThXõe YûL EûX (Puddling furnace) (open hearth furnace) CÚm× £XõdúLh ¨ûX«p
CkR EûX ¨XdL¬ G¬Ü G§o A]p (iron silicate stage) Ft\lTÓ¡u\]. CRu
EûXVôÏm. (Reverberatory furnace) (Fig 2). TV]ôL A§LThN LôoTu (cabon) stage
¿dLlTÓ¡u\].
C§p Es[ L¯Ü (slag) EÚ¡V EúXôLjûR
Ï°o®jÕ TûN Y¥YUôdÏ¡\Õ. ©u]o
§WY AÝjR CVk§Wm (hydraulic presses) êXm
AÝjRlThÓ (slags) L¯ÜLs ùY°úVt\l
TÓ¡u\].
CkR §Wh£«XõÚkÕ (mass) ùNqYL Y¥Y
§mûULs (blooms) RVô¬dLlTÓ¡u\].
CqYûL ùYlTj§mûULs (blooms)
EPú]úV EÚhPôûXL°p (rollong mills)
CqYûL EûXL°p EsÇhÓl ùTôÚhLs ùNÛjRlThÓ ùYqúYß ÏßdÏj
ùSÚl×Pu úSW¥VôL ùRôPo× ùLôs[Up úRôt\eLs ùLôiP RiÓL[ôL (bars)
A]Xõu G§o ÅfÑ êXm ùRôPo× ùYqúYß A[ÜL°p RVô¬dLlTÓ¡u\].
ùLôs¡u\]. (heat by reflection) Eû[«u
EhϯYô] (dome shaped) áûW«XõÚkÕ úR²Úm©u LXl×l ùTôÚhLs
A]p G§ùWôXõdLf ùNnVlTÓYRôp CÕ (COMPOSITION OF WROUGHT IRON)
G§o A]p EûX (Reverberatory) G] Carbon (LôoTu) - 0.02 to 0.03%
AûZd¡lTÓ¡\Õ.
Silicon (£XõLôu) - 0.1 to 0.2%
CkR EûX«XõÚkÕ ùY° GÓdLlTÓm
Manganese (UôeLÉÑ) - 0.02 to 0.1%
RVô¬l× EÚiûP (balls) Y¥YUôLúYô
ApXÕ ùTÚm §mûUL[ôLúYô (blooms) Sulphur (NplTo) - 0.02 to 0.04%
ÑUôo 50 ¡úXô GûP YûW CÚdÏm.
Phosphorous (TôvTWv) - 0.05 to 0.2%
CkR ùYlT EúXôLjûR, ©u]o Ts[eLs
Á§ TôLm CÚm× BÏm.
ùLôiP EÚû[L°u (grooved rollers) FúP
ùNÛj§ §mûULs AÝdÏ RiÓL[ôLÜm
(muck bars) ÏûZl×j RiÓL[ôLÜm (puddle
bars) EÚhPlTÓ¡u\].
£_õ & Gm: @©hPo (NSQF - Revised 2022) ------ R.T. for Ex. No.1.6.80-82
331