TCVN:

TCVN

2008

TIU CHUN VIT NAM

TCVN

:2008

Xut bn ln 1 First edition

CNG TRNH THY LI - CH TO V LP RP THIT B C KH, KT CU THP - YU CU K THUTHydraulics Structures - Manufacturing and installing mechanical equipment, steel structures - Technical requirements

H NI - 2008

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Mc lcTrang Li ni u . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 Phm vi p dng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 2 Tiu chun vin dn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3 nh ngha v thut ng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 Cc quy nh chung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 5 Vt liu.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 6 Gia cng c kh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 7 Gia cng kt cu thp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7.1 Dng c o. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 8 7.2 Chun b vt liu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.3 7.4..

Khoan l trn cc chi tit kt cu thp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Hn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9 9 10 10 13 13 14 15 15 16 17 18 19 19 20 20 20 21 21 23 48 54 55 56

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7.5 Lin kt cc cm bng bulng. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.6 Ch to ca van v b phn t sn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.7 Kim tra cht lng mi hn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8. Quy trnh lp rp ni ch to. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9. Quy trnh vn chuyn v xp kho. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10. Lp t ca van v thit b ng m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.1. Lp t b phn t sn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.2. Lp ca van phng. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.3 Lp t ca van cung. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10.4 Lp t van ch nhn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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10.5 Lp t thit b ti. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.6 Lp t my vt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.7 Lp t thit b nng kiu xi lanh thu lc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.8 Lp t li chn rc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.9 Lp t cu trc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10.10 Sn ph hon thin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11. Bn giao, nghim thu ti hin trng . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ph lc A (quy nh): Cc bng biu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ph lc B (tham kho): Hn kim loi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ph lc C (tham kho): Bu lng lp ghp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ph lc D (tham kho): Ch tiu c l ca vt liu chn nc. . . . . . . . . . . . . . . . . . . . . . . . . . . Ph lc E (tham kho): Xch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Li ni uTCVN :2008 Cng trnh thy li - Ch to v lp rp thit b c kh, kt cu thp Yu cu k thut c xy dng da trn c s chuyn i v b sung Tiu chun ngnh 14 TCN 3:2006: Ch to v lp rp thit b c kh, kt cu thp cng trnh thy li. TCVN :2008 do Trung tm Khoa hc v Trin khai k thut thy li thuc trng i hc Thy li bin son, V Khoa hc Cng ngh v Mi trng thuc B Nng nghip v Pht trin nng thn trnh duyt, B Khoa hc v Cng ngh thm nh ban hnh theo Quyt nh s / 2009/BKHCN ngy thng nm 2009. TCVN :2008 c bin son c s hp tc ca Khoa C kh trng i hc Thy li, ca cc nh khoa hc v chuyn gia hng u v lnh vc C kh thy li.

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TIU CHUN VIT NAM

TCVN:

TCVN:

2008

2008

Xut bn ln 1

Cng trnh thy li - Ch to v lp rp thit b c kh, kt cu thp Yu cu k thutHydraulics Structures - Manufacturing and installing mechanical equipment, steel structures - Technical requirements 1 Phm vi p dng1.1 Tiu chun ny thng nht quy nh cc yu cu k thut c bn v ch to v lp rp, nghim thu thit b c kh v kt cu thp ca cng trnh thy li, thu in bao gm cc loi my ng m ca van, cc loi ca van, li chn rc, cc ng ng dn nc v mt s thit b chuyn dng khc c s dng trn cc cng trnh thy li. 1.2 p dng tiu chun ny cho vic ch to cc b phn truyn ng bng bnh rng, ai, vt - ai c. 1.3 Khng p dng tiu chun ny cho vic ch to xi lanh thy lc v cc b phn truyn ng thy lc cao p. 1.4 Tiu chun ny p dng cho cc kt cu lin kt bng hn v bu lng c ch to t thp cc bon v thp hp kim thp thng c s dng ch to ca van, phai sa cha v cc kt cu c kh thu cng.

2 Tiu chun vin dnTCVN 5017-89 - Hn kim loi - Thut ng v nh ngha. TCVN 5575-1991 - Kt cu thp tiu chun thit k. TCXD 170-1989 - Kt cu thp - Gia cng lp rp v nghim thu - Yu cu k thut. TCVN 1765-75 n TCVN 1767-75 - Thp cc bon, thp n hi. ISO 2553:1992(E) - Mi hn - Biu din k hiu trn bn v (Weded, brazed, and soldered jointssymbolic representation on drawings). DL/T 5018 Specification for manufacture, installation and accept of steel gate in hydraulic and hydroelectric engineer, 1995 Tiu chun ca Trung Quc. DL/T 5167-2002 - Design specifications for gate hoist in Hydropower and water resources projects.

3 nh ngha v thut ng3.1 Hn tay L hn h quang vi in cc kim loi nng chy (que hn). Trong qu trnh hn, que hn lm nhim v gy h quang hn, ng thi b sung kim loi cho mi hn. Vic gy h quang v dch chuyn que hn c thc hin bng tay. 3.2 Hn t ng L hn h quang m trong vic chuyn ng ca dy hn v h quang c thc hin t ng trn my, kim loi nng chy c bo v khng b xy ho bi h quang c ngp trong lp thuc hoc trong vng kh bo v. 3.3 Hn na t ng L hn h quang m trong vic chuyn ng ca dy hn c thc hin t ng trn my, cn dch chuyn h quang c thc hin bng tay, kim loi nng chy c bo v khng b xy ho bi h quang c ngp trong lp thuc hoc trong vng kh bo v. 3

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3.4 Gia cng kt cu thp L cc thao tc bng tay kt hp vi thit b ch to ra cc chi tit v lin kt chng bng bu lng, inh tn hay hn thnh sn phm kt cu thp khng gian theo bn v thit k c duyt. 3.5 Gia cng c kh L cc thao tc ca ngi v my cng c nhm to ra cc chi tit c kch thc, hnh dng theo yu cu bn v thit k c duyt. 3.6 Quy trnh cng ngh L th t gia cng hay lp rp cc b phn my v kt cu thp nhm bo m chnh xc cao nht theo thit k. 3.7 g L b phn dng gi n nh, chng bin dng v sai s cho b phn my v kt cu thp trong qu trnh gia cng. 3.8 Thp cc bon L thp c ch to c thnh phn ho hc v tnh cht c l theo TCVN 1765-85 3.9 Thp hp kim thp L thp c hm lng cc bon trung bnh v c thm mt s nguyn t kim loi him nh crm, silc, nicken, ng, titan v.v.., c cn nng, c tnh chu hn tt theo TCVN 3104-75

4. Cc quy nh chung4.1 Cc kt cu c kh v kt cu thp phi c gia cng v lp rp theo ng h s thit k c cp c thm quyn ph duyt. 4.2 Khi ch to cc b phn c kh v kt cu thp, nh ch to phi lp quy trnh cng ngh sn xut ph hp iu kin my mc c th, trnh tay ngh cng nhn ca n v mnh, nhm m bo cht lng sn phm, tho mn yu cu k thut ca thit k v cc quy nh chung ca tiu chun ny. 4.3 Vt liu dng ch to phi c cht lng v s hiu ng vi yu cu trong bn v thit k. 4.4 Khuyn khch s dng ti a phng php c gii ho trong sn xut v lp rp tng nng sut v cht lng sn phm. 4.5 Vic kim tra cht lng tng cng on trong qu trnh ch to v lp rp phi tun th theo tiu chun ny v quy trnh cng ngh c la chn, ph duyt v ghi y vo biu mu nghim thu theo quy nh hin hnh ca Nh nc. 4.6 Khi xut xng, nh sn xut phi cung cp cho n v lp t ton b sn phm thp cng nh thit b ng m cc ti liu sau: a) S v trnh t lp t cc b phn kt cu thp v thit b; b) Cc bn v phc v lp t; c) Hng dn s dng; d) Cc vn bn v bn v thay i k thut (nu c), cc vn bn, bin bn kim tra k thut ti nh my; e) Bin bn kim tra, nghim thu cht lng sn phm. 4.7 i vi cc kt cu c th, ngoi cc quy nh chung ca tiu chn ny cn phi t c cc yu cu k thut ring trong tng bn v thit k (nu c). 4.8Vic t chc, b tr lao ng ti xng gia cng phi hp l, khoa hc, tun th y cc quy tc an ton lao ng cho cng nhn, my mc thit b v bo m v sinh, chng nhim mi trng, chng chy n theo quy nh hin hnh. 4

TCVN: 5. Vt liu

2008

5.1 Khi s dng vt liu gia cng cc b phn chu lc chnh ca kt cu thp nh dm chnh, dm ph, cng, bn mt v cc gi , trc, bnh rng, khp ni, vt me u phi c nhn mc, chng ch ca nh sn xut, ngun gc xut x r rng. Nu cha r, phi ly mu kim tra ti cc phng th nghim hp chun. Vt liu c s dng phi tun th ng n thit k. 5.2 Vt liu thp gia cng ch to phi c phn loi cht lng, ghi nhn mc y , nh du v sp xp theo chng loi tin s dng, trnh nhm ln. Thp c xp thnh chc chn, hoc trn gi c mi che, d ly. Trng hp ngoi tri th phi xp nghing d thot nc. Khi xp cc tm thp phi k lt chng vng v trnh nc ng. 5.3 Trc khi s dng, thp phi c nn thng, phng v lm sch g, du m. 5.4 Khi vn chuyn thp phi g buc thp khng b bin dng, khng b mn xc. 5.5 Phi c t gang hay thp phi c nhn mc, xut x sn xut, chng ch cht lng v thnh phn ha hc, tnh cht c l, khng c khuyt tt qu yu cu cho php. 5.6 Que hn s dng phi bo m cht lng, phi kim tra bo m cc ch tiu ph hp vi loi thp hn v bn v thit k, m bo tnh cht c l v bn ca mi hn, quy nh ti iu A.1 ca ph lc A. 5.7 Que hn v thuc hn phi bo qun ni kh ro, xp theo l v theo s hiu, phi sy kh theo ch thch hp (t 150oC 2500C, khi ly t sy ra s dng ch vi s lng dng trong mt ca cho thp cc bon v trong hai gi cho thp hp kim thp trong trng hp m mi trng ln hn 75%). 5.8 Que hn b trc v, dy hn r bn, thuc hn b hng tuyt i khng c s dng. 5.9 Thp gia cng c kh phi bo m ng chng loi ghi trong bn v, phi bo m tnh cht x l b mt ph hp kh nng chu ti khi lm vic ca c cu my. Trong trng hp khng c nhn mc nht thit khng c s dng (iu A.2 ca ph lc A). 5.10 Vt liu sn ph, bo v b mt lm vic v tip xc mi trng phi c la chn theo yu cu bn v thit k. Cht lng ca vt liu sn ph phi c ghi y nhn mc, hn s dng, tnh cht ho l r rng. Khng s dng cc loi sn ph t pha ch cha c cng nhn hay loi sn ph khng r ngun gc. 5.11 Vt liu giong chn nc, chn du m phi c sn xut ti c s chuyn ngnh, c chng ch v cc ch tiu c l, ho hc bo m kh nng lm vic mi trng khc nghit.

6. Gia cng c kh6.1 Vt liu dng ch to cc chi tit phi ng chng loi v kch thc phi c tnh ti lng d gia cng theo bn v thit k duyt. 6.2 Cc phi thp phi ct bng my ct, my ca; trng hp ngoi l c th ct bng kh xy. Khng c ct thp bng que hn .

6.3

Dung sai chiu di, chiu rng cho php khi ct phi quy nh ti iu A.3 ph lc A

6.4 Phi thp sau khi ct phi ty sch ba via, x, khng cc ni g gh qu 1mm trn b mt v khng c vt rn nt. 6.5 Yu cu cht lng phi c bng gang hoc thp s dng gia cng ch to

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6.5.1 Khi s dng phi c bng gang hoc thp, phi bo m cht lng phi c v bo m kch thc phi c tnh n d gia cng ph hp yu cu bn v thit k theo tiu chun hin hnh. Cho php c cc khuyt tt nu chiu su khuyt tt khng ln hn 10% chiu dy phi c. 6.5.2 Cc trng hp c hn v khuyt tt nu khng nh hng n bn sn phm 6.5.2.1 Trn cc b mt khng gia cng cho php cc vt r ring, r t ong, r ct c din tch di 10 cm2 v chiu su vt r khng ln hn 1/4 chiu dy phi c v din tch vt r khng qu 15% b mt phi c. 6.5.2.2 Trn cc mt phng gia cng nhng khng phi mt ta cho php cc vt r ring, r t ong, r ct c din tch di 5cm2 v chiu su vt r khng ln hn 1/10 chiu dy thnh ti v tr v din tch vt r khng qu 5% b mt gia cng. 6.5.2.3 Trn b mt ta c gia cng: Cc vt r ring, r t ong, r ct c din tch di 2 cm2 v chiu su vt r khng ln hn 1/10 chiu dy phi c v tng din tch vt r khng qu 3% b mt ta. 6.5.2.4 Trn cc bnh rng thp ca c cu nng: Cc vt r c chiu su khng ln hn 10% chiu dy rng ti v tr khuyt tt v tng din tch khuyt tt nh hn 10% din tch rng v tng cc rng b khuyt tt khng khng ln hn 15% tng s rng. cng ca ch hn trn rng so vi b mt lm vic khng c ln hn 10% cng ca kim loi chnh. Ch c php hn v cc rng khi c s ng ca n v thit k bng vn bn. 6.5.2.5 Trn b mt ln v may ca bnh xe ch to bng thp c khng cho php c vt nt. Khi c khuyt tt sau y, sau khi x l khng nh hng n tnh nng s dng th c hn p: a) Trn b mt ln c vt r khng ln hn 3cm 2, su khng ln hn 1/10 dy thnh bnh xe ni c khuyt tt (nhng khng ln hn 10mm), ng thi trn b mt nm ngang hoc trn din tch 100cm2 khng qu 1 im khuyt tt; b) Mt gia cng nhng khng chu nn ca bnh xe c vt r, din tch khuyt tt khng ln hn 5cm2, su khng ln hn 1/5 dy ni b khuyt tt v s khuyt tt khng ln hn 1 khuyt tt trn din tch 100cm2; c) Vt r mt u may: chiu su khuyt tt khng ln hn 1/15 chiu rng may, chiu di khng ln hn 1/8 chu vi may. Chiu rng khng ln hn 1/3 chiu dy may; d) L trc c vt r vi din tch khng ln hn 2cm2, su khng vt qu 1/10 chiu dy ni b khuyt tt, s khuyt tt khng ln hn 1 trn din tch 100cm2. 6.5.2.6 ng ray lm bng thp c khng c vt nt. Khi c khuyt tt sau y, nhng sau khi hn v x l khng nh hng n cht lng lm vic ca ray, th c hn p: a) Trn b mt gia cng chu nn c vt r khng ln hn 3cm2, su khng ln hn 1/10 dy thnh ni b khuyt tt, ng thi trn b mt nm ngang hoc trn din tch 100cm 2 khng qu 1 im khuyt tt, tng din tch khuyt tt khng ln hn 2% tng din tch mt gia cng. Nhng khng cho php hn p i vi ng ray phi qua nhit luyn v v tr khuyt tt nm trong phm vi tip xc ca bnh xe; b) Mt gia cng nhng khng chu nn c vt r, din tch khuyt tt khng ln hn 8cm 2, su khng ln hn 1/5 dy ni b khuyt tt v tng din tch khuyt tt khng qu 5%. 6.5.2.7 Khi phm vi khuyt tt ca cu kin c nhiu hn cht t so vi quy nh nu trn, sau khi c s ng ca cc c quan kim tra cht lng v thit k mi c hn p, ng thi phi bo m cht lng sau khi hn khng nh hng n chc nng lm vic ca c cu. 6.5.2.8 Trc khi hn phi lm sch v to ming vt ti ch c khuyt tt, phi la chn que hn ph hp vi vt liu phi c. Khi chiu dy thnh ln hn 20mm, hnh dng c phc tp, nhit mi trng thp hn 100C th phi gia nhit trc khi hn. 6

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6.5.2.9 Cc phi c bng thp sau khi hn v phi nhit luyn theo yu cu. Trng hp khuyt tt nh, khng nh hng cht lng lm vic, c b phn kim tra cht lng sn phm v thit k ng th khng phi nhit luyn. 6.6 Yu cu cht lng phi rn 6.6.1 Khi s dng phi rn phi bo m trng thi b mt vt rn ca thp hp kim v thp cc bon theo ng quy nh ca cc tiu chun nh nc hin hnh 6.6.2 Phi rn khng c khuyt tt nh vt nt, phn lp, vy, vt chy, np un. 6.6.3 Nu khuyt tt trn b mt vt rn c gia cng c kh m chiu su khuyt tt khng ln hn 75% lng d gia cng th khng phi sa li khuyt tt. 6.6.4 Khng c dng hn v sa cha cc chi tit c ch to t phi rn treo ti trng, treo ca van nh mc, vng, quai nng ti, b phn chu lc ca mc nng. 6.6.5 Trn b mt vt rn, chi tit ch to t phi rn khng phi loi b cc vt rn nh c chiu di khng ln hn 5mm v chiu rng khng ln hn 0,3mm khi s lng cc vt rn khng ln hn 2 trn 100cm2 b mt. 6.6.6 Cc sn phm rn t thp C51, C25 v cao hn phi gia cng nhit sau khi rn. 6.6.7 Thnh phn que hn dng hn v cc khuyt tt ca vt rn phi tng ng thnh phn vt liu thp rn. cng ch hn v khng ln hn 10% cng ca kim loi hn chnh. 6.6.8 Sau khi hn v phi tin hnh nhit. Nu kch thc qa nh v KCS kim tra cht lng thy khng nh hng th khng phi nhit. 6.7 chnh xc ch to c kh phi tun th bn v thit k, trong trng hp khng quy nh c th th cc sai s ch to khng thp hn cp 8 theo TCVN 2244-99. 6.8 Khi gia cng cc chi tit c kch thc ln v cp chnh xc cao, nht thit phi lp quy trnh cng ngh ch to. 6.9 Dung sai ch to bnh xe, bc, trc ca ca van phi ph hp yu cu thit k. Nu khng quy nh th chn trong khong IT6 IT8, nhn b mt Ra 300

A 5. Sai s ch to tang cun cpTn cc sai s Chiu dy thnh tang c, tang hn van Sai s ng knh so vi thit k Sai lch chiu su rnh cun cp so vi thit k Sai lch v hiu s ng knh ca hai tang trong cng mt c cu (nng cng mt ca) cn cho php Tr s cho php, mm0,0 chiu dy thnh tang theo thit k 6

0,003Dng

3 1< 0,5 0,001

A 6. Sai s ch to bnh xeTn cc sai s Sai s ng knh lm vic ca bnh xe Sai s chiu rng lm vic ca bnh xe van v cn b mt ln Dung sai lp ghp gia trc v bc Dung sai lp ghp gia bnh xe v bc Sai s bn knh chuyn tip t b mt ln n b mt mp bnh xe Tr s cho php, mm

0,005D0

+2

0,005DTheo IT9 (H9/d9) Theo IT8 (H8/t8) 0

+2

A 7. Sai s ch to rng rc

24

TCVN:Tn cc sai s Sai s khe h gia dng v bin dng rnh (o t pha di ln hay cng mt pha) o hng tm ca rnh x dch tm bin dng a so vi tm a

2008

Tr s cho php, mm 0,5 0,2

0,1

A 8. Bn knh cong v vng cho php tin hnh un nn nguing tm un Bn kinh cong r v vng f Cho php un ngui r f Cho php nn ngui r f

Thp hnh

Dng tit din

f a

Thp tm, bn

L x

x-x

y y by

25a

x

y-y

a

L2 200 a

50a

L2 400 a L2 200 b

Thp gc

b1

x-x

45b1 45b2

x y b2

xy-y

L2 360 b1 L2 360 b 2

90b1 90b2

L2 720 b1 L2 720 b 2

yThp ch [

h

x y b

x

x-x y-y

25h 25h

L2 200 h L2 360 b

60h 90h

L2 400 h L2 720 b

yThp I

h

x y b

x

x-x y-y

25h 25b

L2 200 h L2 200 b

50h 50b

L2 400 h L2 400 b

25

TCVN:

2008

yThp ng

x y

x

x-x

d

30d y-y

60d

Trong : L- chiu di phn b cong; a, b, h - chiu di, chiu rng, chiu cao ca tit din;

d - ng knh ng

A 9. Cht lng b mt v mt ct ca vt liuLoi khuyt tt Mc li lm ca b mt Vt xc, vt kha Ra, xm x vy B cnh sc Kt cu chnh ca van 0,1mm Khng cho php Kt cu ph ca van 0,3mm Mt vt 1mm trong phm vi 1 m

Phi ty b trc khi kim tra hoc trc khi sn Cho php lm trn b cnh c ng knh 0,5mm

1mm

A 10. Sai s kch thc gia mt phng gia cng ca cc kt cu myKch thc, mm 10 51 121 261 501 751 Dung sai, mm Kch thc, mm 1.501 2.501 3.50 1 5.001 10.001 15.001 Dung sai, mm

50 120 260 500

0,3

0,5 0,6

2.500 3.500 5.000 10.000

1,5

2,0 2,5

0,8 0,9

3,0 4,0

7 50 1.000 15.000

1,0 1,2

15.000 20.000

5,0

1.000

26

f

f

b

f

A 11. Sai s kch thc cho php ca thp hnh khi ctLoi thp S Dung sai cho php, mm

f

1. phng thp tm, thp dt

bTCVN: 2008

b

b

Sai s t cho php trong phm vi 1m:e >12 ; 4 12 ; 1,5 e 4; 2 t

2. vung gc cc cnh

f

b 100

3. vung gc ca cc cnh thp I, U

b nhng khng ln hn 2 30

eL

Chiu di L 2000

Theo H

100e 1

>100e 1,5

4. xon e ca

H e HL

e H

L

27

TCVN:

2008

thp L, I v U 0,75 L 1000 Nhng e 2 e=

>2000

0,5 e= L 1000 Nhng e 2

A 12. Dung sai ng knh ca l khoan lp bu lngK hiu bulng M12 M14 M16 M18 M20 M22 M24 M27 M30 M36 M42 ng knh thn bulng , mm Loi th 12 14 16 18 20 22 24 27 30 36 42 Loi tinh 12,8 14,8 16,8 19,0 20,7 22,7 25,6 27,6 31,6 37,5 44,5 ng knh l bulng v sai s cho php, mm Loi th 13 (0,+ 0,5) 15 (0,+ 0,5) 17 (0,+ 0,5) 19 (0,+ 0,5) 21 (0,+ 0,5) 23 (0,+ 0,5) 26 (0,+1,0) 29 (0,+1,0) 32 (0,+1,0) 38 (0,+1,0) 45 (0,+1,0) Loi tinh 13 (0,+ 0,2) 15 (0,+ 0,2) 17 (0,+0,2) 19 (0,+ 0,3) 21 (0,+ 0,3) 23 (0,+ 0,3) 26 (0,+ 0,3) 29 (0,+ 0,3) 32 (0,+ 0,4) 38 (0,+ 0,4) 45 (0,+ 0,4)

A 13. Sai s cho php ca l khoan khi lp ghp t cc chi tit riQuy cch Tn sai lch Tr s cho php, mm < 0,5 khng trng khp Mi ghp bu lng th xin ng tm Mi ghp bu lng tinh khng trng khp 0,5 1 1 1,5 3% s< < 2 T l sai lch cho php ca cc l trong mt cm chi tit Cho php 50% 10% Cho php Khng cho php Cho php 25% Khng cho php

> 2< 0,1 0,1 0,3 > 0,3

28

TCVN: xin ng tm 1% s< < 1 Cho php Khng cho php

2008

> 1

A 14. Cc hnh minh ho

bb

Hnh A.2- nghing dm thp b ci quay

h

a)

b)

h

Hnh A1- Dng ngu ca mi hn: a) Hn gc; b) Hn gip mi mt lp

L2 AA 3

1 2 36 5

4 A

4A

1

3 Hnh A.3- Kt 4 trc quay y: cu 2 11-Np trn trc quay, 2- Lt trc, 3u ci, 4-B trc quay y.

Hnh A.4 - Kt cu trc quay nh thanh ko: 1-Trc quay, 2- Cht, 3-Tm b, 4- Cnh van

Hnh A.5- Kt cu ming m: 1-B , 2- Ming m, 3-Vt liu chn (ming chn), 4- B

C

29

TCVN:

2008

Hnh A.6- Lp t ti

30

TCVN: A 15. Sai s kch thc cho php ca tit din ghp hnLoi thp S Dung sai cho php, mm

2008

1. Sai s cho: - Chiu rng b - Chiu cao h - Khong cch bn bng c

bb 1 a

c

= 0,002 h = 0,005 b Nhng khng ln hn 2

h

ab

b1 nhng khng ln hn 2 150

2. khng vung gc a ca bn cnh vi bn bng

b

a < 0,003b nhng khng ln hn 2a a

e3. chuyn dch v tr ng tm e ca bn bng e=0,1 chiu dy bn bng nhng khng ln hn 2 mm

4. phnh cc b ca bn bng t

e

t

100

100

t Sai s t khng ln hn 2 mm

5. cong theo chiu di L

Chiu di cu kin 1m khng ln hn 1mm; khi chiu di tng thm 1m th sai s tng 0,5mm nhng khng ln hn 2mm trn ton b chiu di cu kin L e 1 / 1000 .L ca cu kin nhng nh hn 4 mm e 1 / 1000 .L ca cu kin nhng nh hn 6 mm

6. un cong e ca mt chu lc theo chiu di L 7. un cong e ca mt bn theo chiu di L

A 16. Sai s ch to b phn t sn31

TCVN:

2008

c= 0,1

L 1 f

f1

1

2

1

100

2

1m 1- Ray 2-B phn t s n

Sai s, mm Hng mc Kch thc mt ghp hn khng qua gia cng Sai s (f=1/1500).L nhng khng ln hn 3 (L di cu kin) f1=(1/1000). L nhng khng ln hn 4 e = (1/1000).L nhng khng ln hn 2 Kch thc mt ghp hn qua gia cng Sai s f=(1/2000)L nhng khng ln hn 1 (L di cu kin) f1=(1/1000)L nhng khng ln hn 2 e = (5/10000)L nhng khng ln hn 1,5

1. Theo mt ct A-A, vung gc vi ng ray chnh 2. Theo mt ct B-B, song song vi ng ray 3. phng cc b ca mt cng tc e 4. xon, cong vnh 5. Khe h cc b gia ng ray 1 v b phn t sn 2 theo chiu di

Trong phm vi 3 m khng ln hn 1mm, c tng 1m th tng thm 0,5mm v khng qu 2mm c=0,1mm, chiu di khe h khng qu 100mm/1m di

A 17. Sai s ch to b phn t sn - ray v ta giong chn ncRay v mt ta giong 32 Cc thng s Sai s, mm

TCVN:

2008

1

2

c

3- Khong cch t nh ng ray n tm mt ta ca giong chn nc c - Khong cch tm ray n tm mt ta giong a0,5 2,0

a

1'

2

c

3- Khong cch t mt ta giong chn nc n mt ng ray ngc c2,0

1

2 a

4- Khong cch t nh ng ray n mt ray bnh xe c a

3,0

1'

a

2

4- Khong cch t tm ng ray ngc ti mt ray bnh xe c a

3,0

Dung sai cho php kch thc a, b trong khe van khng ln hn

,0 1

A 18. Sai s phng, thng cho php ca ray theo chiu di di ng chy, mm Sai s, mm lm ca ng ray, mm 0,15 0,20 0,25 0,30 0,40 lm ca mt chu p lm ng chy, mm 0,20 0,30 0,40 0,50 0,60 phng ca ng ray, mm 0,4 0,5 0,6 0,8 1,0

1000> 1000 2500

> 2500 4000> 4000 63000

> 6300 10000

A 19. Sai s cu kin t sn cho tng ngc v tm ta giong chn ncHng mc 1. thng ca mt lm vic e Dung sai, mm B mt cu kin cha gia cng e 1/1500 chiu di cu kin nhng khng ln hn 3 33

TCVN:

2008e 1/1000 chiu di cu kin nhng khng ln hn 4 Trong phm vi 1m2 khng ln hn 1 v khng nhiu hn 3 v tr Cu kin di 3m khng ln hn 2, tng thm 1m di th tng thm 0,5 v khng ln hn 3 Khng ln hn 3 mm trn ton b chiu di

2. thng ca mt bn e 3. phng cc b ca mt lm vic 4. un cong 5. Sai s kch thc tng ngc

A 20. Sai lch cho php khi gia cng ca van phng so vi thit kl'

b

D1 D2

l B

C

H

C

f

Hng mc 1. Chiu dy ca b

Kch thc, mm

f1

Sai lch cho php, mm

b 500 b > 500 1000 b > 1000B, H 5000 > 5000 10000 > 10000 15000 > 15000

(2mm + 0,007b) Nhng khng ln hn gi tr ct bn

2 ,03 ,0 5 ,0

2. Chiu rng B, chiu cao H

(2mm + 0,007B) hoc (2mm + 0,007H) nhng khng ln hn gi tr ct bn3,0 4,0 5,0 6,0 3,0 4,0

5 ,0 8 ,0 10 ,0 12 ,0

3. sai lch tng i gia hai ng Dmax 5000 cho: > 5000 10000 > 10000 15000 Dmax-Dmin > 15000 4. un cong 5. cong ca ca theo chiu ngang f (ch c cong v pha p lc nc) 6. cong ca ca theo chiu ng f1 (ch c cong v pha p lc nc) 7. Khong cch tm hai dm bin 34 B 10000 >10000

B 10000

B v khng ln hn 6 1500 H v khng ln hn 4 1500 3 ,0

TCVN:> 10000 15000 > 15000 B 10000> 10000 15000 > 15000 dy :10 >10 16 >16

2008

4 ,05 ,03 4 5 2 1,0 Trong phm vi 1m khng ln hn: 4 3 2 3 2,0 2,0 1,0 1,5 3,0

8. lch ng tm hai dm bin:l ' l

9. Sai lch v tr dm dc 10. Khe h cc b gia bn mt v dm 11. phng cc b b mt tn bng 12. lch mp di y ca van 2C 13. phng mp di ca van 14. phng ca mt y 2 dm bin 15. Sai s khong cch mt lp giong chn nc v b 16. Khong cch gia tim l vt chn giong cnh bn v tim ca van 17. Khong cch gia tim l vt chn giong y v mp y ca

A 21. Sai lch khu cho php ca gi ta ngTT 1 2 3 Khu , mm > 5000 10000 > 10000 Sai lch cho php, mm Bnh xe 2 3 4 Gi trt ng 2 2 2

5000

A 22. Sai lch cho php khu bnh xe ca ca van theo ng ray chu tiKhu , mm > 5000 10000 > 10000 Sai lch cho php, mm 1 2 4

5000

A 23. Sai lch cho php khi gia cng ca van cung so vi thit k

35

TCVN:

2008b

D 2

L

D1

l H

R

l'

c

B

N

Sai lch cho php, mm Hng mc Kch thc, mm Cng Cng l ngm thin (2mm+0,007b), nhng khng ln hn gi tr di y: 3 ,0 4 ,0 5 ,0 khng ln hn gi tr di y: 5 ,0 8 ,0 10 ,0 12 ,0 3,0 4,0 5,0 2,0 3,0 4,0 2,0 3,0 4,0 3,0 4,0 5,0 6,0 7,0 8,0 o mi ghp cng vi dm chnh o mi ghp cng vi dm chnh o 4 gc ca cnh van o ng tm dm chnh, ph hay gii hn dm ngang o ng tm dm chnh, ph hay dm dc vi c o dy cung 3m Ghi ch

1. Chiu dy dn ngang v tn bng (bn mt ca b)

b 500 b > 500 1000 b > 1000

(2mm+0,007b), nhng

2. Sai lch chiu rng B, chiu cao H

B hoc H 5000 > 5000 10000 > 10000 15000 > 15000 D1 5000 > 5000 10000 > 10000

3. Sai lch tng i ca ng cho D1 - D2

4. Cong vn

5000 > 5000 10000 > 10000

5000 > 5000 10000 > 10000 5000 > 5000 10000 > 10000

5. phng theo chiu ngang ca 6. Khe h gia tm c v cung theo chiu dc ca 7. Khong cch tm hai dm chnh 8. lch hai ng

3,0

6,0

3 ,0B 10000 3,0

36

TCVN:tm dm bin:l ' l

2008

> 10000 15000 > 150002,0 1,0 dy : Trong 1m2 3,0 3,0 2,0 2,0 3,0 5,0 4,0 3,0

9. lch v tr dm dc 10. Khe h cc b gia bn mt v dm 11. phng cc b tn bng 12. thng mt y cnh van 13. lch 2 mp y ca van 2C 14. Khong cch t tim l vt m chn nc bn n tm ca van 15. Sai s gia 2 tm mt bch lp bn mt L L 4000 > 4000 6000 > 6000> 6 10 >10 16 >16

,5 1

3 ,0 4 ,0

2 ,0

Kim tra t hp trc khi xut xng:A R'

A-A

l2

l' 3 H B

D1 D 2

a

l3A

l2

nSai lch cho php, mm Cng ngm Cng l thin

Hng mc 16. lch a ca hai mt bch ca hai cng ni vi ci quay 17. Sai s ca ng tm hai cng pha b quay 18. khng ng tm cng e1 19. khng ng tm cng e2 20. Sai s ca ng tm hai cng n tm ng ca van pha bn mt 21. Sai s tng i ng cho 2 cng D1 D2 22. lch v tr cng trn v di

e1

a khng ln hn 1,0mm v nghing mt khng qu 1/1000 l1= 1 ,0mm Khng ln hn 2,0 Khng ln hn 4,01 L2= ,5

Khng ln hn 3,0 Khng ln hn 5,0 37

l1Ghi ch

l1

e2

TCVN:' c= l3 l3

2008

23. Sai lch bn knh R

Ca van cung kiu nh u Sai lch tng i hai bin Ca cung kiu l chm Sai lch tng i hai bin Ca cung ct nc cao, c yu cu m rng khe van t ngt

7 ,0 5,0 3 3,0 3 1,0

Ghi ch: Khi khong cch ca tim 2 dm bin v thng ng ca n c lin quan n giong chn nc bn, th sai s ca n cn ng quy nh ca bn v thit k.

A 24. Dung sai hnh dng theo chiu ngang ca van cungHng mc Kch thc tham kho, mm1000 >1000 1600 >1600 2500 > 2500 4000 > 4000 6300 > 6300 2500

Sai s cho php, mm0,5 0,8 1,0 1,2 1,5 2,0

1. thng ngang ca ca van

2. thng ca cc mt ghp

630 > 630 1000 >1000 1600 1600 2500

0,2 5 0,3 0,4 0,5

A 25. Sai lch cho php khi gia cng ca van ch nhn so vi thit k

38

TCVN:B/2 b B B/2f

2008

D2

D1

1

H

f

2

Hng mc 1. Chiu dy ca b

Kch thc, mm b 500 b > 500 1000 b > 1000 H 5000

Sai lch cho php, mm

(2mm+0,007b)Nhng khng ln hn gi tr ct bn

2 ,0

(2mm+0,007B; > 5000 10000 hoc H) Nhng khng > 10000 15000 ln hn gi tr ct bn > 15000 2.5 B 5000 4,0 > 5000 10000 3. Chiu rng B/2 5 ,0 > 10000 3,0 Dmax 5000 4. Sai lch tng i gia hai ng 4,0 > 5000 10000 cho: 5,0 > 10000 15000 Dmax-Dmin 6,0 > 15000 3,0 B 10000 5. cong vn 4,0 >10000 B 6. cong ca ca theo chiu ngang f v khng ln hn 4 1500 (ch c cong v pha p lc nc) H 7. cong ca ca theo chiu ng f1 v khng ln hn 6 1500 (ch c cong v pha p lc nc) 3 ,0 B 10000 > 10000 15000 8. Khong cch tm hai dm bin 4 ,0 5 ,0 > 15000 9. Khe h cc b gia bn mt v dm 1,02. Chiu cao H

3 ,0 5 ,0 5 ,0 8 ,0 10 ,0 12 ,0

A 26. Sai s cho php ca li chn rcHng mc 1. phng b mt lm vic 2. phng b mt bn 3. phng cc b b mt lm vic 4. un cong Dung sai v sai lch cho php, mm 1/1000 chiu di cu kin, nhng khng ln hn 6mm 1/750 chiu di cu kin, nhng khng ln hn 8 mm Khng ln hn 2mm trn 1m2 din tch Khng ln hn 3mm

A 27. Cc phng php kim tra cht lng mi hn kt cu thpPhng php kim tra 1. R sot ton b cc bc trong quy trnh cng ngh hn Dng kt cu Tt c cc kt cu 39

TCVN:

2008Tt c cc kt cu Cc ca van loi va v ln Cc kt cu chu lc chnh do thit k quy nh. Dng kt cu Kt cu thp dng tm v mi hn yu cu kn, c. Theo yu cu thit k Dng kt cu do thit k quy nh Do thit k yu cu v quy nh Do thit k yu cu v quy nh

2. Quan st b ngoi bng knh lp v o kch thc mi hn bng dng so snh vi thit k 3. Kim tra xc sut mi hn bng siu m hoc bng tia pht x xuyn thu 4. Kim tra 100% mi hn bng siu m Phng php kim tra 5. Kim tra bng thm du ho trong 2 gi hoc chn khng 6. Th mi hn bng thu lc v kh nn 7. Kim tra bng phng php khng ph hng lin kt 8. Th nghim c tnh trn cc mu 9. Quan st kim tng mi hn

A 28. Cc tr s khuyt tt cho php ca mi hn khi kim traTn gi v hnh v cc khuyt tt - li lm mt ng hn theo chiu dc. - li lm mt ng hn theo chiu ngangf l 2c =m 5 s f

Sai s cho php h 2mm/25cm di f 0,5mm khi s 10mm f 1mm khi s>10mm

Cch kim tra Dng thc dt v thc o chiu su

Cc vt lm trn mt thp hn

Khng cho php i vi mi hn i u. Cc mi hn khc f 0,05s v 15mm + Mt dy cc khuyt tt + Mt dy khuyt tt d 1mm Siu m di < 20mm/ 240mm chiu di + Mt ch tp trumg khuyt tt c din tch < 1cm2 trn 240mm di

A 29. Cho php x l khuyt tt mi hnLoi khuyt tt cho php x l 1. Li lm, lm trn b mt bn thp 2. Hn cha ngu nn c bt, x, r.. 3. Li lm trn b mt mch hn 4. Khuyt chn mi hn 5. Ln ln nhau Phng php x l Phi hn p v dng my mi, phay bng mt thp hn, to nn ch chuyn tip u t kim loi mi hn n thp hn Loi b khuyt tt bng cch to rnh lng mng v hn p li Dng my mi sa bng mt su < 0,5mm th dng my mi nhn. su ln th hn p v mi bng mt Dng my mi to lng mng v hn p li Xc nh nguyn nhn gy nt, ty b ton b phn nt v hn p li mt cch cn trng trnh b nt li. i vi chi tit chu lc: khoan chn cc u nt 15mm bng mi khoan 5mm 8mm, vt mp ng nt v hn p li.2 Cho php khoan l v hn v li l. Nu dng dy hn th mi khoan l 8mm - 16mm, chiu su l 55% lt theo vn tc Trc quay > 300vg/ph p st b mt > 65% ng knh ngoi bc H8 < lt v l trn v hp t8 ng knh trong v Ph thuc vng trong hay Theo TCVN 2245-77 bi ngoi vng ngoi quay 0,1mm/100mm chiu rng khng ng tm ca m phanh v bnh phanh m phanh Cc b phn Khe h gia 2 m phanh v mt ai u nhau 1 1,5mm Khe h hng tm ca phanh ai khi nh ht 1 1,5mm phanh hm o hng tm v mt u ca bnh phanh 0,05mm tip xc ca b mt m phanh ln mt bnh 100% Cc tm m hp gim tc, ng c, gi < 2 tm theo chiu cao Hiu chnh Phn bu lng nh khi ai c khi vn cht 2 5 vng ren khi lp ln b khng ng tm trc ng c v hp gim tc, < 0,3mm my gi Hp gim tc kn bng du < 1/3 Bi trn Hp gim tc h, bc bng m Theo yu cu

A 31. Nhit du trong hp gim tc cho php khi chy th42

TCVN:Loi hp gim tc Rng tr v cn xon Bnh vt trc vt Nhit mi trng, oC 10 20 10 20 Nhit cui thi gian th, oC 40 60

2008

A 32. Nhit trt cho php khi chy thTc quay ca trc, vg/ph 20 20 100 > 100 Nhit cui thi gian th, oC Khng ln hn nhit mi trng Cho php ln hn 200C so vi mi trng Cho php ln hn 300C so vi mi trng

A 33. Lp rp cc b phn ta ngLoi ca van Kch c Cc b phn Bnh xe, b phn trt Bnh xe c Loi mt tai treo phi cn bng sau khi lp hon chnh Loi hai tai treo Ngoi c Kt cu thp B phn ko ( ti, vt me, xi lanh thu lc) Bnh xe, b phn trt B phn ko (ti, xi lanh thy lc) Kt cu thp B phn ko (Ti, xi lanh thy lc) iu kin Phi lp v iu chnh ti nh my sau khi hn kt cu hon chnh Lp ti hin trng nghing tim hnh hc thng ng khng ln hn 1mm/1m chiu di Sai s 2 vt khi nng ht khe van khng ln hn 0,5mm/1m chiu di Phi g lp nh hnh tng th ti nh my, xc nh ng chun, cht nh v, s th t, nh du bng sn d phn bit Phi kim tra ln xung tng i mt. Phi lp v iu chnh ti nh my sau khi hn kt cu hon chnh Sai s 2 nhnh khi nng ht khe van khng ln hn 0,5mm/1m chiu di Phi g lp nh hnh tng th ti nh my, xc nh ng chun, cht nh v, s th t, nh du bng sn d phn bit. Phi kim tra ln xung tng i mt.

ng c Ca van phng

ng c Ca van cung Ngoi c

A 34A. Sai s cho php ca b phn t sn ca van phng trn cng trnhCc i lng Hnh v Bn y khe van - dung sai, mm M ca tng ngc dung sai, mm

T khe van m

a

h

43

TCVN:

2008

T l cng m

b

a

T khe van m

b

1. Khong cch a t tm phn t sn n tm khe 2. Khong cch b t tm phn t sn n tm khu cng 3. Cao trnh 4. Chiu cao h (m ca n ngng y) 5. Hiu cao trnh hai mt u 6. phng mt lm vic 7. lch v tr ch ghp b mt lm vic

Trong vng lm vic Ngoi vng lm vic Trong vng lm vic Ngoi vng lm vic

5 5

+2 -1

5

3L>10m L 200 Ngoi vng lm vic cho php tng tr s

f

f

1 1,5 2

B

1 1,5

A 34B. Sai s cho php ca b phn t sn ca van phng trn cng trnhT T ng ray chnh Khng c gia gia cng cng ng Ta Ray trt giong bnh xe thp cnh c bn bn C kt hp ng ray bn Tng ngc Kt hp chn Khng kt hp chn nc nc Trn Di Trn Di

44

TCVN:bb

2008

a T khe van m a

a

b a T k ev n mh a T l cng m

T khe van m a T l cng m b

a

b

a

1 a

2 b 3 4

+2 -1 +3 -1 3

+3 -1 +5 -2 3

5

55

+3 -1 +5 -2 3

+2 -1

5

55

+5 -0

+2 -1

+8 -0

+2 -1

32

4

4

5

5

52 1 2B

2 1

4 1

4 1

0,5 1B

1 2f

1 2B

1 2f

0,5

1

f

fBfB

f

B200 Ngoi vng lm vic

0,5 1 1 2

1 2 2 2

2 2,5 3 2

2 2,5 3 2

1 1,5

2 1,5

2 2,5 3 2

Ghi ch: 1) L: chiu di ca 2) Cu kin mi mt t nht o 1 im; 3) Chiu cao vng lm vic ca rnh van: nu ng ca van thy tnh l chiu cao l cng; nu ng ca van thy ng l chiu cao ng ray chnh chu lc.

A 35. Sai s cho php ca b phn t sn ca van cung trn cng trnhTa giong bndung sai, mm Cng ngm Cng l thin Ta ngc hng - dung sai, mm Gi tr dung sai

TT

Bn y - ngng - dung sai, mm

Tng ngc Dung sai, mm

45

TCVN:

2008A-A B

A

A b

1 2

T l cng m Cao trnh h

h

53

3

Trong vng lm Khong cch t vic tim l cng n mt bn tr pin b Ngoi vng lm vic Hiu cao trnh hai mt u L>10000 L 20001

7,0 8,0 9,0 10,0 11,0 12,0

47

TCVN:

2008

S+ 1

S

S/2 S

1- 2 22 2o

S/2 S

1,5 - 2,550 2:o

1: 2 -

60 2

20 2

3

8o

1-2

60 2

1 2

2- 3:

1- 2o

60 2 50

18 2

2

Ph lc B1-2

R1

(tham kho) Hn kim loi

10

1 2

K hiu1

S dng

K hiu

18 2 Hnh dng tit din vt hn

5

2,5 - 3a= +3,7 S/5

3- 4

20

Max0,3

48

5 R=:

2 - 2,5

S

:

o

22 2 a

+ o

15 8 40

4 15

>30

16 30

35

20 40

>6

B.2 i chiu tng ng cc loi thp theo tiu chun cc ncLoi thp Thp cc bon kt cu thng thng Mc thp TCVN CT31 CT33 CT34 CT38 CT42 CT51 CT61 DIN USt 37-2 RSt 37-2 A36A, A36M-94 A570Gr33,36 A570Gr40 A570Gr50 A572Gr50 A572Gr65 ASTM SS330 SS330 SS400 SS490 SS540, 49 C3;CY3; CJ3 JIS GB Nga

TCVN:

2008SM570 09Mn2 19Mn 14Mn2 StE355 TstE 355 TstE 460 A516Gr70, A515Gr70, A414Gr F, G A537Gr1 A414GrG, A612 A288/A288 M93a 09Mn2 14Mn2 SGV410, SGV450 SGV480 SM490A,B,C, YA,YB SM570, SM520B,C SM490A,B,C, YA,YB 14CrMnSi 10CrSiNiCu 15CrSiNiCu 0Cr19Ni9 1Cr18Ni9 1Cr18Ni11Ti 0Cr18Ni9Ti 14CrMnSi 10CrSiNiCu 15CrSiNiCu 10Mn2Si1 10Mn2Si1 09Mn2 14Mn2

Thp kt cu hp kim thp

18Mn2 09Mn2Si 17MnSi

09Mn2Si

09Mn2Si

10Mn2Si1 15MnV 14CrMnSi

A588 WTSt 360-3 -

Thp khng r

10CrSiNiCu WTSt 510-3 15CrSiNiCu 0Cr19Ni9 1Cr18Ni9 1Cr18Ni11Ti 0Cr18Ni9Ti

50

TCVN:

2008

B 3. C l tnh v thnh phn ho hc ca thp cc bon kt cu thng thngGii hn chy Re, kg/mm2 bn Mc thp ko Rm kg/mm2 cho dy mm n 20 22 23 24 24 25 26 27 29 29 32 Trn 20 Trn 40 n 40 n 100 Khng nh hn CT31 CT33s CT33n CT33 CT34s CT34n CT34 CT38s CT38n CT38 33 42 34 44 37 47 38 49 21 22 23 24 24 25 26 28 28 31 20 21 22 23 23 24 25 27 27 30 19 20 20 21 21 23 24 26 26 30 33 32 27 26 26 25 24 20 20 15 32 31 26 25 25 24 23 19 19 14 30 29 24 23 23 22 21 17 17 12 31 31 40 32 42 23 35 34 Trn 100 dn di , % cho dy mm n 20 Trn 20 n 40 22 34 33 Trn 40 20 32 31 C 0,32 0,06 0,12 0,05 0,12 0,06 0,12 0,09 0,15 0,09 0,15 0,09 0,15 0,14 0,22 0,14 0,22 0,14 0,22 0,14 0,22 0,18 0,27 0,18 0,27 0,18 0,27 0,28 0,37 0,28 0,37 0,22 0,30 0,38 0,49 0,38 0,49 0,25 0,50 0,25 0,50 0,25 0,50 0,25 0,50 0,25 0,50 0,25 0,50 0,30 0,60 0,40 0,65 0,40 0,65 0,80 1,10 0,40 0,70 0,40 0,70 0,40 0,70 0,50 0,80 0,50 0,80 0,80 1,20 0,05 0,17 0,15 0,35 Mn 0,05 0,05 0,17 0,12 0,30 0,07 0,05 0,17 0,12 0,30 0,07 0,05 0,17 0,12 0,30 0,15 0,07 0,05 0,17 0,12 0,30 0,05 0,17 0,15 0,35 0,15 0,05 0,17 0,15 0,35 Hm lng cc nguyn t, % Si P S Cr Ni Cu

Khng nh hn 0,07 0,04 0,04 0,04 0,04 0,04 0,04 0,04 0,04 0,04 0,04 0,04 0,04 0,04 0,04 0,04 0,04 0,04 0,04

Khng ln hn 0,06 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,05 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03

CT38n Mn 38 50 CT42s 41 52 CT42n CT42 CT51n CT51 42 54 51 64

CT52n Mn 46 60 CT61n 61 CT61

50

TCVN:

2008

B4 C l tnh v thnh phn ho hc ca thp kt cu hp kim thp dai va p dn Chiu bn Th nghim Gii hn Nm/m2x106 nhit un ngui: a) di dy vt ko chy Re, tng cn, Rm, B dy gc un; 0 0 0 Mpa mm Mpa i , % +20 C -40 C -70 C D) ng knh 4 10 4 10 4 20 21 32 4 10 460 480 450 450 470 460 520 470 500 490 480 470 460