5
vkbZ,l@vkbZ,l@
vkbZ,l@vkbZ,l@
vkbZ,l@IS 3601 : 2006
13-2 piVkus lacaèkh ijh{k.k13-2 piVkus lacaèkh ijh{k.k
13-2 piVkus lacaèkh ijh{k.k13-2 piVkus lacaèkh ijh{k.k
13-2 piVkus lacaèkh ijh{k.k
13-2-113-2-1
13-2-113-2-1
13-2-1 piVkus lacaèkh ijh{k.k 60-3 feeh- ls vfèkd vkdkj
osQ ckg~Ô O;kl ij vkbZ,l 2328 osQ vuqlkj fd;k tk,sxkA
13-2-213-2-2
13-2-213-2-2
13-2-2 ufydk ds Nksj ls dVs 40 feeh- ls vfèkd vkdkj
osQ ckg~Ô O;kl NYys dks lekUrj ifV~V;ksa osQ chp j[k dj
tc BaMk piVk fd;k tk, rks mlosQ IysVul osQ chp dh nwjh
mfpr vuqHkkx esa fn, gq, fufnZ"V ewY; ls vfèkd u gks rFkk
mlesa dksbZ njkj ;k nks"k u vk,A fdukjksa ij ekewyh le;iwoZ
foiQyrk vLohÑfr dk dkj.k ugha ekuk tk,xkA ijh{k.k ls
igys mHkjs fdukjs gVk fn;s tk,aA uewus osQ Nksj vkDlh,lhfVyhu
ykS ls uk dkVs tk,aA
13-2-313-2-3
13-2-313-2-3
13-2-3 oSYMÑr ufydkvksa ij oSYM dks likV dh fn'kk osQ
90° ij j[kk tk,xkA
13-3 eksM+ ijh{k.k (iV~Vh)13-3 eksM+ ijh{k.k (iV~Vh)
13-3 eksM+ ijh{k.k (iV~Vh)13-3 eksM+ ijh{k.k (iV~Vh)
13-3 eksM+ ijh{k.k (iV~Vh)
13-3-113-3-1
13-3-113-3-1
13-3-1 de ls de 38 feeh- pkSM+h iV~Vh tks] ufydk osQ
,d Nksj ls ifjfèkd dVh gks] BaM+h voLFkk esa djhc 180° ij
ewy oØrk dh fn'kk esa] ekSM+s tkus ij njkj ;k dV nks"k u
fn[kkbZ nsA uewus osQ fdukjksa ij gYdh lh le;iwoZ foiQyrk
vLohÑfr ugha ekuh tk,sxhA
13-3-213-3-2
13-3-213-3-2
13-3-2 uewus osQ ;kaf=kd xq.kksa ij xehZ osQ izHkkfor {ks=k esa
dksbZ cnyko u vk,] mlosQ fy, dkVus dh izfØ;k esa mPp
rki dk iz;ksx ugha fd;k tk,sxkA
13-4 eksM+ ijh{k.k] iwjh ufydk ij13-4 eksM+ ijh{k.k] iwjh ufydk ij
13-4 eksM+ ijh{k.k] iwjh ufydk ij13-4 eksM+ ijh{k.k] iwjh ufydk ij
13-4 eksM+ ijh{k.k] iwjh ufydk ij
13-4-113-4-1
13-4-113-4-1
13-4-1 vkbZ,l 2329 osQ vuqlkj ijh{k.k fd;k tk,xkA
ufydk dks ,d ,slh ufydk eksM+us okyh ,d e'khu ftlosQ
pkjksa vkSj ,d ,slk xzwo iQkWeZj gksxk ftlosQ fupys ry ij xzwo
dh fofufnZ"V f=kT;k ;Fkksfpr vuqHkkx osQ vuqlkj gksxhA
ufydk,a Hkjh ugha tk,axhA oSYM Iysu eksM+ osQ 90° ij gksxkA
bl ijh{k.k osQ ifj.kkeLo#i ufydk esa dksbZ dV nks"k ;k njkj
fpÉ fn[kkbZ u nsA
13-4-213-4-2
13-4-213-4-2
13-4-2 ;fn ufydk dk vfèkdre O;kl 60-3 feeh- ls
vfèkd gks rks iwjh ufydk dk eksM+ ijh{k.k ugha Hkh fd;k tk
ldrk gSA
13-5 viokg izlkj ijh{k.k13-5 viokg izlkj ijh{k.k
13-5 viokg izlkj ijh{k.k13-5 viokg izlkj ijh{k.k
13-5 viokg izlkj ijh{k.k
13-5-113-5-1
13-5-113-5-1
13-5-1 vkbZ,l 2335 osQ vuqlkj ijh{k.k fd;k tk,xkA ,d
viokg dks.k dh enn ls] ftldk ,d 'kkfey dks.k 30° ;k
45° ;k 60° gks] dh 100 feeh- yEch ufydk dk ,d
VqdM+k] ,d Nksj ls dkV dj rc rd izlkfjr djsa tc rd
,d ufydk osQ eq[k dk ckg~Ô O;kl bruk c<+ tk, fd og
;'kksfpr vuqHkkx esa fofufnZ"V izfr'kr ls de u gksA ufydkvksa
dh csfyax] drkbZ fofèk ls vuqes; ugah gSA bl ijh{k.k osQ
mijkar ufydk esa dksbZ njkj ;k nks"k ugha vkuk pkfg,A
13.2 Flattening Test
13.2.1 Flattening test shall be carried out above sizes
of 60.3 mm, outside diameter in accordance with
IS 2328.
13.2.2 A ring not less than 40 mm in length, cut from
the end of the tube shall withstand, without showing
either crack or flaw, being cold flattened between
parallel plates until, the distance between the platens
is not greater than that specified in the appropriate
section. Slight premature failure at the edges shall not
be considered a cause for rejection. Burrs shall be
removed before testing. Sample shall not have ends
cut by oxyacetylene flame.
13.2.3 Welded tubes shall have the weld placed at 90°
to the direction of flattening.
13.3 Bend Test (Strip)
13.3.1 A strip not less than 38 mm wide, cut
circumferentially from one end of the tube, when cold,
be bent approximately 180° in the direction of original
curvature round a bar of the diameter specified in the
appropriate section, without showing either crack or
flaw. Slight premature failures at the edges of a
specimen shall not be considered a cause for rejection.
13.3.2 For sample cutting, high temperature cutting
method shall not be used to avoid changes in
mechanical properties in heat affected zone.
13.4 Bend Test, Whole Tube
13.4.1 The test shall be carried out in accordance with
IS 2329. The tubes shall be bent cold, by means of a tube
bending machine round a grooved former having at the
bottom of the groove the radius specified in the
appropriate section. The tubes shall not be filled. The
weld shall be at 90° to the plane of bending. The tube
shall show no sign of crack or flaw as a result of this test.
13.4.2 The maximum outside diameter of the tube
above which bend test of whole tube may not be carried
out is 60.3 mm.
13.5 Drift Expansion Test
13.5.1 The test shall be carried out in accordance with
IS 2335. A piece of tube approximately 100 mm long
cut from one end shall be expanded cold, by means of
a conical drift having an included angle of 30° or 45°
or 60° until outside diameter of the tube at the mouth
has been increased by not less than the percentage
specified in the appropriate section. Belling of the tubes
by spinning methods is not permissible. The tube shall
show no sign of crack or flaw as a result of this test.