iW (MS - Mild Steel)
Ö iW cÖavbZ 2 cÖKvit (1) †cøBb iW, (2) wWdg©W evi| GQvovI UzB‡óW bv‡g GK cÖKvi iW Av‡Q|
(1) †cøBb iW t
†cøBb ev‡i Dc‡ii c„ôZj mgZj|
(2) wWdg©W
evit Dc‡ii c„óZj LuvRKvUv|
i‡Wi Mv‡q ‡Kv¤úvbxi
bvg †MÖW, mvBR I kw³i cwigvY D‡jøL _v‡K|
Ö
iW Gi †MÖW mPviPi 2 cÖKvi| h_v t 1) 40 †MÖW, 2) 60 †MÖW GQvovI 72 †MÖ‡Wi
iWI cvIqv hvq|
Ö
40 †MÖW Gi iW ej‡Z Gi Bì kw³ m‡e©v”P 40000 psi
60 †MÖW Gi iW ej‡Z Gi Bì kw³ m‡e©v”P 60000 psi
Ö
400-500w wjLv Øviv wK eySv‡bv nq?
400
(60 ‡MÖW) Øviv Bì
kw³ m‡e©v”P (400Í145) = 5800 psi eySvq|
500
(72 ‡MÖW) Øviv Bì
kw³ m‡e©v”P (500Í145) = 72500 psi
eySvq|
Ö
W Øviv iWwU e܇b welded I‡qì Kiv hv‡e wKbv Zv eySvq|
W _vK‡j I‡qì Kivi Dc‡‡hvMx|
TMT Øviv - Thermal Mechanical
Treatment eySv‡bv
nq|
Zvcxq we‡kl c×wZ‡Z iWwU ˆZix|
Ö 1 myZ ej‡Z 1 BwÂi 8 fv‡Mi 1 fvM‡K eySvq|
1 myZ = 3.17mm = 0.125 inch.
Ö e¨eüZ K‡qKwU i‡Wi mvBR I evi bst
|
mvBR
|
|
evi
ev myZ bs
|
cwimxgv
|
|
6 mm
|
-
|
2
|
(6) 18.85
mm
|
|
8 mm
|
-
|
-
|
-
|
|
10 mm
|
-
|
3
|
(8) 25.13
mm
|
|
12 mm
|
-
|
4
|
(10) 31.42
mm
|
|
16 mm
|
-
|
5
|
(12) 37.40
mm
|
|
20 mm
|
-
|
6
|
(16) 50.27
mm
|
|
22 mm
|
-
|
7
|
(20) 62.83
mm
|
|
25 mm
|
-
|
8
|
(22) 69.11
mm
|
|
28 mm
|
-
|
9
|
(25) 78.54
mm
|
|
32 mm
|
- |
10
|
(28) 88.96
mm
|
|
|
|
|
(32) 100.53
mm
|
Ö Low
Allow steel evi iW
n‡j i‡Wi Mv‡q W ‡jLv _v‡K|
Ö Axel
steel n‡j i‡Wi Mv‡q
A ‡jLv _v‡K|
Ö i‡Wi IRb wbY©q myÎt myZv/evi² ÷ 24 (lb/ft)
A_ev, 
A_ev, 
A_ev,
8 mm cÖwZ dzU i‡Wi IRb =
0.120 kg/ft – 0.39 kg/m
10 mm cÖwZ dzU i‡Wi IRb = 0.188
kg/ft – 0.62 kg/m
12 mm cÖwZ dzU i‡Wi IRb = 0.270
kg/ft – 0.89 kg/m
16 mm cÖwZ dzU i‡Wi IRb = 0.481
kg/ft – 1.58 kg/m
20 mm cÖwZ dzU i‡Wi IRb = 0.751
kg/ft – 2.47 kg/m
22 mm cÖwZ dzU i‡Wi IRb = 0.909
kg/ft – 2.98 kg/m
25 mm cÖwZ dzU i‡Wi IRb = 1.17
kg/ft – 3.85 kg/m
28 mm cÖwZ dzU i‡Wi IRb =
1.47 kg/ft – 4.83 kg/m
|
06 mm
|
-
|
450.45 m
|
-
|
1477.47 ft
|
|
08 mm
|
-
|
253.16 m
|
-
|
830.36 ft
|
|
10 mm
|
-
|
162.34 m
|
-
|
532.63 ft
|
|
12 mm
|
-
|
112.61 m
|
-
|
369.36 ft
|
|
16 mm
|
-
|
63.33 m
|
-
|
207.72 ft
|
|
20 mm
|
-
|
40.55 m
|
-
|
133.00 ft
|
|
22 mm
|
-
|
33.56 m
|
-
|
110.08 ft
|
|
25 mm
|
-
|
25.95 m
|
-
|
85.11 ft
|
|
28 mm
|
-
|
20.70 m
|
-
|
67.89 ft
|
|
32 mm
|
-
|
15.80 m
|
|
51.82 ft
|
Ö
 ״ |
Wvqv iW |
=
|
6 mm
|
 ״ |
Wvqv
iW
|
=
|
10 mm
|
 ״ |
Wvqv
iW
|
=
|
12 mm
|
 ״ |
Wvqv
iW
|
=
|
16 mm
|
 ״ |
Wvqv
iW
|
=
|
20 mm
|
 ״ |
Wvqv
iW
|
=
|
22 mm
|
|
1״
|
Wvqv
iW
|
=
|
25 mm
|
Ö cÖwZ †KwR MS i‡Wi ˆ`N©¨ L = 
(m) , D = i‡Wi mvBR mm
(m) , D = i‡Wi mvBR mm
Ö GK CFT MS i‡Wi IRb = 222.26 kg = 490 lb
Ö GK NbwgUvi (m³) i‡Wi IRb = 7850
kg
Ö cÖwZ myZv i‡Wi û‡Ki Rb¨ 1 BwÂ
ûK †`Iqv cÖ‡qvRb|
Ö cÖwZ myZv i‡Wi j¨v‡ci Rb¨ 5 BwÂ
j¨vc †`Iqv cÖ‡qvRb
Ö K‡¤úªk‡b j¨vwcs ˆ`N©¨ = 24 D
‡Ubk‡b j¨vwcs ˆ`N©¨ =
30 D
D = i‡Wi mvBR mm
Ö ûK mn j¨vwcs
K‡¤úªk‡b =
44 D
‡Ubk‡b = 60 D
D = i‡Wi mvBR mm
|
Ö Gg Gm i‡W †h me cixÿv Kiv nqt
1)
cvi‡m‡›UR Bjs‡Mkb †Uó
2)
‡eÛ wi‡e›U †Uó
3)
‡UbvmvBj †÷ªš’
4)
Kv‡e©vb K‡›U›U †Uó |
Kswµ‡U
i‡Wi cwigvb (kZKiv AvqZ‡b)
Kjvg
dzwUs - 1.5%
weg - 2.5%
Kjvg - 2.5%
¯øve - 1.25-1.5%
UvBweg/wjb‡Uj- 1.0%
wmuwo - 2.0%
mvb‡mW - 0.8%
WªcIqvj
|
Ö i‡Wi cwigvY †ei Kivi wbqgt
As
= 
‡hLv‡b M = ‡ewÛs
†gv‡g›U
fs = ÷x‡ji †kqvi cxob
J = wjfvi Avg© (1-
) `yiZ¡
) `yiZ¡
d = Kvh©Kvix MfxiZv
‡K as Øviv fvM Ki‡j i‡Wi msL¨v Avm‡e|
as
= i‡Wi †ÿÎdj (1wU)
Ö iW †cøm‡g›U Kivi wbqg
(cvkvcvwk)
1) me©wb¤œ
= 1 BwÂ, 2) i‡Wi e¨vm `~iZ¡, 3) m‡e©v”P †Kvm© GwMÖ‡M‡Ui 1.5 ¸b|
Ö ¯øv‡e me©wb¤œ i‡Wi cwigvY t
1) wWdg© evi =
0.12%
2) †cøb
evi = 0.25%
KswµU AvqZ‡bi Qv‡` mvavibZ 10 mm iW e¨envi Kiv nq|
Ö MS iW
180°euvKv‡bv n‡j = 4 D
90°euvKv‡bv n‡j = 12 D (D = i‡Wi mvBR mm)
135°euvKv‡bv n‡j = 6 D
‰`‡N©¨ ûK w`‡Z n‡e|
Ö MS óx‡j
0.15% - 0.30% Kve©b _v‡K|
Ö i‡Wi AvjwU‡gU I Bì kw³ cixÿvq 500
mm iW KvUv nq|
(100
– 300 – 100) mm
|← 200 mm |←300mm
|←40mm
K‡i `vMvw¼Z Kiv nq|
Ö Smart test mdUIqv‡ii
gva¨v‡g, BDwbfvm©vj †Uwós †gwk‡b
16 mm ‡iK©WK…Z djvdj t
Ultimate Strength – 131.20
Stress –
652.41 MPA
Yield strength – 71.05
Stress –
353.31 MPA
Ultimate Stress Strength – 652.41Í145 = 94599.45 psi
Yield
Stress Strength – 353.31Í145 = 51229 psi
gšÍe¨ t
iWwU 500W, 72 ‡MÖW|
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