Problemas de Siderurgia II

 

^OJ\N[TJGHG OHDJ@OHF C@TN LH^TWJO@ THODENS DH[[J@O LHD^FWHG GN JOBNON[JH MNWHF^[BJDH Z X^JMJDH

NTD^NFH HDHGNMJD@ Y[@LNTJ@OHF GN JOB. MNWHF^[BJDH

W[HKHC@3 Y[@KFNMHT GN TJGN[^[BJH JJ

HF^MO@3

MNFBH[NC@ MNOGNS C^HO HFNUHOGN[ 

G@DNOWN3 JOB. \NBH YN[NGH OJDHG@[ 

E^HDE@ - YN[Ó ;985

 

^ojvnrsjghg Ohdj`ohf C`sê Lhustjo` Tèodenz Dhrrjôo TJGN[^[BJH JJ

Y[@KFNMHT [NT^NFW@T GN TJGN[^[BJH JJ

8. ^o d`ovnrtjg`r Knssnmnr-èdjg` trhth ;9 t`onfhghs gn hrrhkj` no 8; mjout`s. Tn `xjgho fhs sjbujnotns jmpurnzhs. Dhfdufn nf v`fumno gn hjrn rnqunrjg`. D

7,9%

TJ 8,5% Mo 9,5% Whmkjêo sn `xjgh nf 4% gnf ejnrr`. Hsumjr qun nf ejnrr` ns `xjghg` h uoh rhth uojl`rmn y qun trns duhrt`s gnf D phsho hf D@ y uo duhrt` h D@;. T@F^DJ@O

No nstn pr`dns`, nf hrrhkj` sn dhrbh hf d`ovnrtjg`r no nsthg` fíqujg`, y sn jotr`gudn uo s`pf` s`p f` gn hjrn lrí` d`o nf ljo gn `xj `xjghr ghr t`g t`ghs hs fhs jmpu jmpurnz rnzhs. hs. H pnsh pnshrr qun o` sn dhrb dhrbh h ojobóo ojo bóo d`m d`mku kustj stjkfn kfn,, fh dhr dhrbh bh y f`s pr` pr`gud gudt`s t`s sn mho mhotjn tjnono ono fíq fíqujg ujg`s `s gnk gnkjg` jg` hf dhf dhf`r  `r  bnonrhg` p`r p`r fh `xjghdjôo gn fhs jjmpurnzhs. mpurnzhs. Tn trhtho no nstn tjp` gn d`ovnrtjg`rns, hrrhkj`s d`o muy p`d` ` ojobóo Y, pnr` hft`s no Tí. Nf pr`dns` Knssnmnr-èdjg` sn d`osjgnrh gjvjgjg` no ; pnrí`g`s, nf prjmnr` jodfuyn fh `xjghdjôo gn t`g` nf Tj y nf Mo, qun p`r tnonr rnfhtjvhmnotn mhy`r hljojghg p`r nf `xíbno` qun nf D, sn `xjgho prjmnr`. Gurhotn nf snbuog` pnrí`g` sn `xjgh nf D. @durrn hfbuoh `xjghdjôo gnf Ln no vjrtug gn fh brho dhotjghg qun ehy gn nstn nfnmnot` no nf hrrhkj` y phrh nlndt`s gn dèfduf`s, sn hsumn qun nstn sn `xjgh h uoh rhth uojl`rmn gurhotn d/u gn f`s pnrí`g`s. D`o nsths hdfhrhdj`ons, pr`dnghm`s h rnhfjzhr f`s rnspndtjv`s dèfduf`s3  Hrrhkj`=8>999 Ab  Ab.. Tj@ ;=;9999 x 9,985 =4 ab Tj`xjghg`=

47>.85> −;5 =28.87> ab  Mo `xjghg`=28.87>−>> / 28= >>.88 ab

Dhfdufhog` nf D t`thf `xjghg`3 D @ ; no bhs bhs=;;2;2−9.;8=889.>.8=89 m4 =4>2 ab

@ gnfD @;= 8.

 

^ojvnrsjghg Ohdj`ohf C`sê Lhustjo` Tèodenz Dhrrjôo TJGN[^[BJH JJ

 Ln gn nstn =

7;9−>< 2;

 Ln gnf hrrhkj`=

=4; 2

 4;2 9.98

=4;299 4;299

hrrhkj`=4;299 + 8 + 842;= 472; fjkrhs :>.5% gnf hrrhkj` hrrhkj` =

472;4 9.:>5

= 4 fjkrhs 3 ns nsnf nf pns`gnf hrrhkj hrrhkj` ` dhrbh dhrbhg` g` .

Yhrh K3 D gn gnff hr hrrh rhkj kj` ` =4− 9.97;=8>;;.;: fjkrhs D↛D@ = 8>;;.;:−4 =8878.2; 7

D↛ D@; =8>;;.;:−∛8878.2;=459.>2

Dhfdufhog` nf @3 @gnfD@ =

8878.2;−8<

@gnfD@ ;=

8; 459.>2 −4; 8;

=8>;;.;: fjkrhs

=8987.5> fks

@ gnf Tj@; =;:79∛842;= 8>;;+ 898> + 8>;; + 898> =;>42 fks

<

 

^ojvnrsjghg Ohdj`ohf C`sê Lhustjo` Tèodenz Dhrrjôo TJGN[^[BJH JJ

t ;

sjo

88−;>42

 Ln @=

7452

% gn Ln;@4 Z 8>% gn Tj@;1 hsumjr fh gjvjsjôo gn fh `xjghdjôo gnf mêt`g` sjbujnotn3 Tj, t`g` p`r bhsns……………………………………………………. h Tj@; Mo, fh mjthg p`r bhsns y fh mjthg p`r mjonrhf…………………… h Mo@ D, uo qujot` p`r bhsns, duhtr` qujot`s p`r mjonrhf………… mjonrhf…………...…. ...…. h D@ Y, t`g` p`r nf mjonrhf…………………………………..…………… h Y;@> Fh nsd`rjh gnknrè d`otnonr Ln@ nqujvhfnotn hf ;% gnf ejnrr` no nf hrrhkj` y fh dehthrrh dhrbhg`. Nf Ln@ nsth `xjghg` fh mjthg p`r bhsns y fh `trh mjthg ns rngudjg` gnf Ln;@4. Tn dhrbh suljdjnotn DhD@4, d`m` phrh pr`gudjr uoh nsd`rjh d`o 79% gn Dh@. Y[NB^OWHT3 h. Nf p pns` ns` gnf mjo mjonrh nrhff on ondns dnshrj hrj` ` k. Nf p pns` ns` gn fh nsd nsd`rj `rjh h pr` pr`gud gudjgh jgh

T@F^DJ@O h.

No nf mjonrhf, nf hbnotn `xjghotn ns nf Ln;@4 Dhrbh =59 x ;999 =8< 8< D `xj `xjgh ghg` g` p`r p`r nfmjonrhf nfmjonrhf =47> =;2> =;4859,7

 Yns` gnf mjonrhf= ;4859.7 fjkrhs k.

Nsd`rjh = Tj@; + Mo@ + Y;@> + Ln@ + Dh@ Tj@ ; nomjonrhf =;4859 x 9.8> =4722.8 fjkrhs Tjnohrrhkj`+ dehthrrh =8