bxd 03 321204

TIU CHUN XY DNG VIT NAM 330:2004

TCXDVN

B XY DNG -------S:32 /2004/Q-BXD

CNG HO X HI CH NGHA VIT NAM c lp - T do - Hnh phc ---------H ni, ngy 23 thng 12 nm 2004

QUYT NH CA B TRNG B XY DNG V vic ban hnh TCXDVN 330 : 2004 " Nhm hp kim nh hnh dng trong xy dng - Yu cu k thut v phng php kim tra cht lng sn phm " B TRNG B XY DNG - Cn c Ngh nh s 36 / 2003 / N-CP ngy 4 / 4 / 2003 ca Chnh ph quy nh chc nng, nhim v, quyn hn v c cu t chc ca B Xy dng; - Xt ngh ca V trng V Khoa hc Cng ngh,

QUYT NH iu 1. Ban hnh km theo quyt nh ny 01 Tiu chun xy dng Vit Nam : TCXDVN 330 : 2004 " Nhm hp kim nh hnh dng trong xy dng Yu cu k thut v phng php kim tra cht lng sn phm " iu 2. Quyt nh ny c hiu lc sau 15 ngy, k t ngy ng cng bo iu 3. Cc ng Chnh vn phng B, V trng V Khoa hc Cng ngh v Th trng cc n v c lin quan chu trch nhim thi hnh Quyt nh ny ./.

B TRNG B XY DNG Ni nhn: - Nh iu 3

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TCXDVN

- VP Chnh Ph - Cng bo - B T php - V Php ch - Lu VP&V KHCN Nguyn Hng Qun k

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TCXDVN

TCXDVN

TIU CHUN XY DNG VIT NAM

TCXDVN 330: 2004

NHM HP KIM NH HNH DNG TRONG XY DNG YU CU K THUT V PHNG PHP KIM TRA CHT LNG SN PHM Aluminium alloy bars - Technical requirements and Test methods

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TCXDVN

Li ni u Tiu chun TCXDVN 330: 2003 "Nhm hp kim nh hnh dng trong xy dng - Yu cu k thut v phng php kim tra cht lng sn phm ". B Xy Dng ban hnh theo quyt nh s 32/2004/Q-BXD, ngy 23 thng 12 nm 2004.

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TCXDVN

NHM HP KIM NH HNH DNG TRONG XY DNG YU CU K THUT V PHNG PHP KIM TRA CHT LNG SN PHM Aluminium alloy bars- Technical requirements and Test methods 1. PHM VI P DNG: Tiu chun ny quy nh cc yu cu k thut v phng php kim tra cht lng sn phm thanh nhm hp kim nh hnh dng trong xy dng. 2. NH NGHA V THUT NG. - Nhm hp kim nh hnh l nhm c sn xut theo kch thc mt ct ngang v chiu di xc nh. - Ant ho b mt l x l b mt bng xy ha dng cc, to thnh mng xt nhn to bn vng sau c nhum mu v bt l.

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TCXDVN

- Nhum mu in ho l qu trnh to lp mu xt ant c trng bng phng php in phn. - Bt l l qu trnh hyrat ho mng oxt nhn to trn b mt thanh nhm c to thnh bi qu trnh ant ho v nhum mu gim r v khuyt tt trn b mt sn phm v tng bn mu vi mi trng t nhin. - Ph bng ED l qu trnh in ho kt ta lp sn bng khng mu trn b mt thanh nhm, to nn b mt sn phm mt lp sn bng, p, bn mu. - Vng trn ngoi tip: L ng knh ca ng trn nh nht m n bao kn mt ct ngang ca profin. 3. TI LIU VIN DN. - TCVN 197: 2002 Vt liu kim loi - Th ko nhit thng. - TCVN 5841 - 1994. Nhm v hp kim nhm. Dng prfin. Sai lch kch thc v hnh dng. - Tiu chun dimensions. ISO 6362/3-1990. Extruded rectangular bar - Tolerances on

- Tiu chun ISO 6362/4-1988. Extruded profiles - Tolerances on Shape and dimensions. - Tiu chun ISO 6362/1-1986. Technical conditions for inspection and delivery - Tiu chun ISO 6362/5-1991. Exstruded round, square and hexagonal bars Tolerances. - Tiu chun Anh quc BS 4300/16:1984. - Tiu chun nh nc Cng Ha Nhn Dn Trung Hoa GB 3191- 82. Nhm v hp kim nhm dng cho n p dng nh hnh. - Tiu chun nh nc Cng Ha Nhn Dn Trung Hoa GB/T 5237-93. Nhm v hp kim nhm nh hnh dng trong xy dng kin trc. 4. YU CU K THUT. 4.1. Yu cu chung Nhm hp kim nh hnh dng trong xy dng yu cu vt liu hp kim phi c tnh nng cng ngh, bn c l, m bo chng n mn tt, c kh nng x l c b mt, nhum mu, sn bng b mt, sn tnh in Ngoi ra phi m bo tnh lp ghp, tnh chu lc, tnh thm m v tnh kinh t cao, ph hp vi kin trc hin i. 4.2. Tiu chun thnh phn ha hc: Nhm hp kim nh hnh dng trong xy dng phi tha mn cc yu cu v thnh phn ha hc c nu bng 1

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TCXDVN

Bng 1: Cc yu cu v thnh phn ha hc hp kim nhm (%) Mc nhm 6063 Si Mg Mn Cu Fe Cr Zn Ti Tp cht Rin g l 0,2 0, 0,45 0, 6 9 0,8 1,2 0,1 0,1 0,35 0,1 0,04 0,35 0,25 0,1 Tng cng Al

0,05 0,15 Cn li 5 n 15 > 15 n 30 > 30 n 60 > 60 n 100 > 100 n > 150 n 150 200

A 1 n 3.2 > 3.2 n 6.30 > 6,30 12.50 > 12,50 20.00 > 20,00 25.00 n n n 2 0,15 0,18 0,20 0,23 0,25

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TIU CHUN XY DNG VIT NAM

TCXDVN..........:2004

> 25,00 40,00 > 40,00 50,00 > 50,00 100,00

n n n

0,30 0,36 0,60 0,86 1,10 1,35

0,30 0,36 0,60 0,86 1,10 1,35

0,54 0,60 0,86 1,10 1,35 1,65

0,58 0,66 0,96 1,25 1,55 1,90

0,66 0,78 1,20 1,65 2,10 2,50

0,76 0,92 1,45 2,00 2,50 3,00

0,88 1,05 1,70 2,40 3,05 3,70

1,25 2,05 2,80 3,55 4,30

> 100,00 n 150,00 > 150,00 n 200,00 > 200,00 n 250,00

1. Khi sai lch kch thc quy nh khc vi sai lch v 2 pha th gi tr sai lch gii hn c tnh l trung bnh cng sai lch ln nht v nh nht ca kch thc . 2. Khi xc nh sai lch ca profin hnh gc khng c php da trn cc kch thc ng thng m phi xc nh theo gc. 3. Sai lch ny khng p dng cho cc kch thc nh x hoc z ca hnh ngay c khi y > 75%. Ph thuc khong cch a t mt chun i vi sai lch m c th p dng c cho kch thc x v z. S dung cc ct tng ng Ci v Ce. 4. Theo tho thun gia c s sn xut v t hng, c th thay vic quy nh Ce ( kch thc ngoi) bng quy nh Ci ( kch thc trong). 5. c p dng khi khng gian hon ton kn v c din tch 70mm2 ; nu khng s dng ct A ( mt ct h)

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TIU CHUN XY DNG VIT NAM TCXDVN..........:2004

Bng 5b: Cc yu cu v kch thc mt ct ngang. TT 1 2 3 4 5 6 7 8 9 10 11 Kch thc danh ngha (mm) 3 3 6 6 12 12 19 19 25 25 38 38 50 50 100 100 150 150 200 200 250 Dung sai cho php (mm) 0,15 0,18 0,20 0,23 0,25 0,30 0,36 0,61 0,86 1,12 1,37

4.5. Sai lch ca mt gc c cho trc i vi mt ct ca profin ti bt k im no phi tha mn yu cu dung sai gc sn phm nu bng 6. Bng 6: Dung sai cho php gc sn phm. Chiu dy danh ngha thnh mng nht, mm n 1,6 Ln hn 1,6 n 5,0 Ln hn 5,0 Sai lch cho php (max) 20 1,50 10

Khi dung sai gc cho php ch yu cu ( + ) hoc ( - ) tc l gp 2 ln tr s cho php. 4.6. Thanh nhm hp kim nh hnh dng trong xy dng phi tha mn cc yu cu dung sai bn knh gc ln sn phm c nu bng 7. Bng 7: Dung sai cho php bn knh gc ln sn phm. Bn knh gc ln (mm) R R 4,7 > 4,7 Dung sai cho php (mm) 0,4 0,1R

R

13

Hnh 2


Khi dung sai gc cho php ch yu cu ( + ) hoc ( - ) tc l gp 2 ln tr s cho php. 4.7. Thanh nhm hp kim nh hnh dng trong xy dng phi tha mn cc yu cu dung sai phng trn b mt sn phm c nu bng 8. Ly thc thng o ngang b mt sn phm bt k ch no, khe h c o c gi tr ln nht ca khe h nh hnh 3 .

b

Khe h

Hnh 3

Bng 8: Dung sai cho php phng b mt sn phm B mt sn phm B (mm) B mt sn phm phng B 25 B mt sn phm phng B > 25 Dung sai cho php (mm) 0,10 0,4% x B14


B mt sn phm cong

0,13/cung 25mm

4.8. Thanh nhm hp kim nh hnh dng trong xy dng phi tha mn cc yu cu dung sai cong sn phm. cong ca sn phm l khong cch t im xa nht ca mt di sn phm n mt bng ngang ca bn o (sau khi m cong n nh li do trng lng bn thn ca sn phm). cong ca sn phm c th o trn tng di c thanh sn phm (ht) hoc dng thc thng 300mm o b mt dc theo chiu di, xc nh khe h ln nht (hs) nh hnh 4. Dung sai cho php cong sn phm c quy nh bng 9.

300 m m Th c th nght

hsB n oHnh 4

l

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Bng 9: Dung sai cho php cong sn phm. ng knh vng trn ngoi tip (mm) 38 cong sn phm (mm) dy sn phm (mm) 2,4 > 2,4 >38 2,4 > 2,4 Trn di bt k 300mm (hs) < 1,3 < 0,3 < 0,3 < 0,3 Trn tng di sn phm Lm (ht) < 3xL < 0,7xL < 0,7xL < 0,7xL

4.10. Thanh nhm hp kim nh hnh dng trong xy dng phi tha mn cc yu cu dung sai vnh sn phm c nu bng 10. t sn phm trn bn phng ch cho n nh theo hng chiu di sn phm o c ly ln nht ca mt bn v mt di ca sn phm gi l N (mm) (hnh 5).

Hnh 5 Ly gi tr N (mm) chia cho chiu rng ca sn phm c vnh thc t ca sn phm. Cn c vo ng knh vng trn ngoi tip ca mt ct sn phm tra bng 10 c vnh tiu chun. vnh ca sn phm phi nh hn tr s vnh tiu chun ghi trong bng 10, th m bo yu cu.

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Bng 10: Dung sai cho php vnh sn phm ng knh vng trn ngoi tip > 12,5 40 > 40 80 > 80 250 vnh mm / mm rng Mi mt < 0,087 < 0,052 < 0,026 di sn phm < 0,176 < 0,123 < 0,079

4.11. Thanh nhm hp kim nh hnh dng trong xy dng phi tha mn cc yu cu dung sai chiu di sn phm c nu di y. Bng 11: Sai lch gii hn chiu di quy c ng knh vng trn ngoi tip 60 60 n 100 100 n 140 140 n 180 180 n 250 Chiu di quy nh, mm n 1000 + 2,0 + 2,0 + 3,0 + 3,5 + 4,5 T 1000 n 1500 + 2,5 + 2,5 + 3,5 + 4,0 + 5,0 T 1500 n 5000 + 2,5 + 3,5 + 4,0 + 5,0 + 6,5 T 5000 n 7000 + 3,5 + 4,0 + 5,0 + 6,5 + 8,0

4.12. B dy ti thiu ca tit din thanh nhm hp kim nh hnh. dy thanh nhm hp kim nh hnh khng nn thp hn cc tr s nu bng 12.

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Tiu chun xy dng vit nam TCXDVN..........:2004

Bng 12: dy mt ct ngang thanh nhm hp kim nh hnh ng knh vng trn ngoi tip, mm 35 Mc ch s dng Kt cu ca ra vo Kt cu ca s Kt cu vch, , nh mi knh Cc loi khc 35 n 50 Kt cu ca ra vo Kt cu ca s Kt cu vch, , nh mi knh Cc loi khc 50 n 100 Kt cu ca ra vo Kt cu ca s Kt cu vch, , nh mi knh Cc loi khc > 100 Kt cu ca ra vo Kt cu ca s Kt cu vch, , nh mi knh Cc loi khc 4.13. Cht lng b mt nhm hp kim nh hnh. 4.13.1. Cht lng lp mng xy ho: Thanh nhm hp kim nh hnh dng trong xy dng phi tha mn cc yu cu lp mng xy ha sn phm c nu bng 13. Bng 13: Yu cu v lp mng xy ha. TT 1 2 Tn ch tiu cht lng Lp mng thanh nhm Anod Lp mng thanh nhm Anod ED n v m m Mc cht lng 8 25 15 35 Chiu dy mt ct ngang, mm 1,2 1,4 1,15 1,2 1,2 2,0 1,0 2,0 1 1,2 1,15 1,2 1,4 1,7 1,2 3,5 1,4 1,8 1,2 1,4 1,7 1,8 2,0 4,5 1,8 2,0 1,4 1,8 2,0 2,5 4,0 8,0

4.13.2. B mt sn phm: + B mt sn phm phi sch, khng cho php c vt rn, bong lp, hoc bt kh. + B mt sn phm phi bng, mu sc phi ng u khng c loang mu.18


+ Trn b mt sn phm cho php vt ma st, vt xc rt nh b su nh hn 0,05mm. Cho php on u 20mm ca sn phm khng c mng xy ho. 5. PHNG PHP KIM TRA CHT LNG SN PHM. 5.1. Ly mu kim tra: + Mu phn tch thnh phn ho hc nh sn xut phi phn tch theo m ca tng l luyn c. Khch hng c th ly mu bt k kim tra. i vi sn phm th mu phi c ty b lp mng xy ho. + Mu kim tra dung sai, c tnh v mng xy ho ly 02 thanh bt k ca mi loi sn phm, mi thanh ly mt mu th. + Lng mu ti thiu ly nh sau: - i vi sn phm c ng knh vng trn ngoi tip hoc chiu dy 10mm ly mt mu cho mi l hng 1000kg. - i vi sn phm c ng knh vng trn ngoi tip hoc chiu dy ln hn 10 50mm ly mt mu cho mi l hng 2000kg. - i vi sn phm c ng knh vng trn ngoi tip hoc chiu dy ln hn 50mm ly mt mu cho mi l hng 3000kg. - L hng c chp thun nu tt c cc ch tiu nh gi trn mu kim tra u t yu cu quy nh. Nu mt ch tiu khng t yu cu quy nh, c php ly mu kim tra li ln hai, vi s lng mu gp i kt qu ln hai l kt qu cui cng. Ch mt ch tiu khng t yu cu quy nh l hng b loi b. 5.2. Phng php kim tra thnh phn ha hc: Theo phng php kim tra ca my: ASTM E415-95, hoc theo cc phng php xc nh ca TCVN 5911-1995, TCVN 5912-1995, TCVN 5913-1995, TCVN 5914-1995, hoc theo phng php xc nh sau: 5.2.1. Nguyn tc ca phng php. Phng php phn tch bng my quang ph l kch thch bng h quang in in p cao v t mu trong mi trng kh Ar to mu thnh cc m my nguyn t, cc bc sng tng ng cho vch ph tng ng. Sau i chiu vi ng chun c xy dng trong my, rt ra c t l nng nguyn t vi cc nguyn t nn s c kt qu phn tch ca tng nguyn t. 5.2.2. Cc bc tin hnh phn tch mu trn my quang ph. Bc 1: Ly mu phn tch quang ph . - Mu phn tch c th ly bt k trong cng on sn xut nhm thanh nh hnh hoc thnh phm. - Mu phn tch phi tht phng, phi lm sch b mt ca mu (lm sch lp xt).

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Bc 2: Phn tch nhiu im trn cng mt mu sau ly kt qu trung bnh. 5.3. Phng php kim tra c tnh: 5.3.1. bn ko: Thc hin theo tiu chun TCVN 197 : 2002 5.3.2. dn di tng i: Thc hin theo tiu chun TCVN 197 : 2002 5.3.3. cng: Dng my o cng Model B Tester v mu chun Rockwell E Scale hiu chnh my. Sau dng my kim tra cng sn phm. T tr s c c trn my tra bng c gi tr cng ca sn phm. n v tnh l HV 5.4. Phng php kim tra xc nh dung sai kch thc mt ct ngang. Dng thc chun Panme chnh xc 0,01mm xc nh dy v thc cp chnh xc 0,02mm xc nh kch thc mt ct ngang. Dung sai kch thc mt ct ngang phi tho mn yu cu bng 5. 5.5. Phng php kim tra xc nh dung sai gc sn phm. Dng thc o gc chnh xc 2' xc nh gc sn phm. 5.6. Phng php kim tra xc nh dung sai bn knh gc ln sn phm. Dng dng o gc, o xc nh bn knh gc ln sn phm phi tho mn yu cu bng 5. 5.7. Phng php kim tra xc nh dung sai phng b mt sn phm. Dng thc cn l chnh xc 0,01mm xc nh khe h sn phm. Dng thc cp chnh xc 0,02mm o kim tra kch thc b mt ca sn phm. 5.8. Phng php kim tra xc nh dung sai cong sn phm. Dng bn o phng, thc mt chnh xc 1mm, thc thng 300mm v thc cp chnh xc 0,02mm xc nh dung sai cong sn phm. 5.9. Phng php kim tra xc nh dung sai vnh sn phm. Dng bn o phng, thc mt chnh xc 1mm, thc thng 300mm v thc cp chnh xc 0,02mm xc nh dung sai vnh sn phm. 5.10. Phng php kim tra xc nh dung sai chiu di sn phm. Dng thc mt cp chnh xc 1mm xc nh chiu di sn phm. 5.11. Phng php kim tra xc nh mng xy ha sn phm. Phng php o dy bng dng in cm ng in t.

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S dng my Elcometer A355 chnh xc 1 m v nhng mu chun xc nh dy mng xy ho. u tin chnh li my bng mu chun ( chn mu c dy gn ging vi dy mng xy ho cn o ). My sau khi chnh trn mn hnh phi hin 4 con s 0. Sau khi chun c my tin hnh o, tr s hin trn mn hnh chnh l dy mng xy ho, n v o ca my l m. 6. BAO GI, BO QUN, VN CHUYN 6.1. Bao gi: Thanh nhm hp kim nh hnh dng trong xy dng phi ng gi bi mng PE hoc cun giy trn tng thanh sn phm. Sau c ng b theo tng chng loi sn phm, hai u dng ai qun chc chn v c nhn mc r rng. Trn nhn hng ho c ghi theo quy nh nhn hng ho ( Ch th s 28/2000/CT-TTG v quyt nh s 178/1999/Q-TTG.) 6.2. Bo qun, vn chuyn: - Bo qun sn phm c xp t trong kho, t ngay ngn trn m g, hoc cao su, cao khng xp qu cao trn 3m trnh , trnh ni ma dt, trnh ngun nhit qu nng (nhit bo qun

bxd 03 321204

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