Mirija ya chuma isiyo imefumwa kwa muundo wa kawaida
Kawaida:GB/8162-2008 | Aloi au La: Aloi au kaboni |
Kikundi cha Daraja: 10,20,35, 45,Q345,Q460,Q490,Q620,42CrMo,35CrMo,Etc | Maombi: Bomba la miundo, bomba la mitambo |
Unene: 1 - 100 mm | Matibabu ya uso: Kama mahitaji ya mteja |
Kipenyo cha Nje (Mzunguko): 10 - 1000 mm | Mbinu: Iliyoviringishwa kwa Moto au Imeviringishwa kwa Baridi |
Urefu: Urefu usiobadilika au urefu wa nasibu | Matibabu ya joto: Kupunguza / Kurekebisha / Kupunguza Mkazo |
Sura ya Sehemu: Mviringo | Bomba Maalum: Bomba Nene la Ukutani |
Mahali pa asili: Uchina | Matumizi: ujenzi, mitambo |
Uthibitisho: ISO9001:2008 | Mtihani: ECT/UT |
Hutumika Hasa Kutengeneza Chuma cha Muundo wa Carbon, Aloi ya Miundo ya Chuma na miundo ya mitambo.
Daraja la Chuma cha Muundo wa Kaboni: 10,20,35, 45,Q345,Q460,Q490,Q620,,N.k.
Daraja la Chuma cha Muundo wa Aloi: 42CrMo, 35CrMo, Nk
Daraja la chuma | Kiwango cha ubora | Muundo wa kemikali | ||||||||||||||
C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | Nd | Mo | B | Als" | ||
hakuna kubwa kuliko | si chini ya | |||||||||||||||
Q345 | A | 0.2 | 0.5 | 1.7 | 0.035 | 0.035 | 0.3 | 0.5 | 0.2 | 0.012 | 0.1 | -- | - | |||
B | 0.035 | 0.035 | ||||||||||||||
C | 0.03 | 0.03 | 0.07 | 0.15 | 0.2 | 0.015 | ||||||||||
D | 0.18 | 0.03 | 0.025 | |||||||||||||
E | 0.025 | 0.02 | ||||||||||||||
Q390 | A | 0.2 | 0.5 | 1.7 | 0.035 | 0.035 | 0.07 | 0.2 | 0.2 | 0.3 | 0.5 | 0.2 | 0.015 | 0.1 | - | - |
B | 0.035 | 0.035 | ||||||||||||||
C | 0.03 | 0.03 | 0,015 | |||||||||||||
D | 0.03 | 0.025 | ||||||||||||||
E | 0.025 | 0.02 | ||||||||||||||
Q42O | A | 0.2 | 0.5 | 1.7 | 0.035 | 0.035 | 0.07 | 0.2 | 0.2 | 0.3 | 0.8 | 0.2 | 0.015 | 0.2 | -- | -- |
B | 0.035 | 0.035 | ||||||||||||||
C | 0.03 | 0.03 | 0.015 | |||||||||||||
D | 0.03 | 0.025 | ||||||||||||||
E | 0.025 | 0.02 | ||||||||||||||
Q46O | C | 0.2 | 0.6 | 1.8 | 0.03 | 0.03 | 0.11 | 0.2 | 0.2 | 0.3 | 0.8 | 0.2 | 0.015 | 0.2 | 0.005 | 0.015 |
D | 0.03 | 0.025 | ||||||||||||||
E | 0.025 | 0.02 | ||||||||||||||
Q500 | C | 0j8 | 0.6 | 1.8 | 0.025 | 0.02 | 0.11 | 0.2 | 0.2 | 0.6 | 0.8 | 0.2 | 0.015 | 0.2 | 0.005 | 0.015 |
D | 0.025 | 0.015 | ||||||||||||||
E | 0.02 | 0.01 | ||||||||||||||
Q550 | C | 0.18 | 0.6 | 2 | 0.025 | 0,020 | 0.11 | 0.2 | 0.2 | 0.8 | 0.8 | 0.2 | 0.015 | 0.3 | 0.005 | 0.015 |
D | 0.025 | 0,015 | ||||||||||||||
E | 0.02 | 0.01 | ||||||||||||||
Q62O | C | 0.18 | 0.6 | 2 | 0.025 | 0.02 | 0.11 | 0.2 | 0.2 | 1 | 0.8 | 0.2 | 0.015 | 0.3 | 0.005 | 0.015 |
D | 0.025 | 0.015 | ||||||||||||||
E | 0.02 | 0.01 | ||||||||||||||
A. Kando na gredi za Q345A na Q345B, chuma kinapaswa kuwa na angalau kipengele kimoja cha nafaka iliyosafishwa Al, Nb, V, na Ti. Kulingana na mahitaji, muuzaji anaweza kuongeza moja au zaidi vipengele vya nafaka iliyosafishwa. Thamani ya juu itakuwa kama ilivyoainishwa kwenye jedwali. Inapounganishwa, Nb + V + Ti sio zaidi ya 0.22% b. Kwa alama za Q345, Q390, Q420 na Q46O, Mo + Cr si kubwa kuliko 0.30%c. Wakati Cr na Ni za kila daraja zinatumiwa kama vipengele vya mabaki, maudhui ya Cr na Ni haipaswi kuwa zaidi ya 0.30%; inapohitajika kuongeza, maudhui yanapaswa kukidhi mahitaji katika jedwali au kuamuliwa na msambazaji na mnunuzi kupitia mashauriano.d. Ikiwa msambazaji anaweza kuhakikisha kuwa maudhui ya nitrojeni yanakidhi mahitaji katika jedwali, uchanganuzi wa maudhui ya nitrojeni hauwezi kufanywa. Ikiwa Al, Nb, V, Ti na vipengele vingine vya alloy na fixation ya nitrojeni huongezwa kwa chuma, maudhui ya nitrojeni sio mdogo. Maudhui ya urekebishaji wa nitrojeni yanapaswa kubainishwa katika cheti cha ubora. E. Unapotumia alumini kamili, jumla ya maudhui ya alumini Alt ≥ 0020%. |
Daraja | CEV sawa na kaboni (sehemu ya wingi) /% | |||||
Unene wa ukuta wa kawaida s≤ 16mm | Unene wa ukuta wa jina S2>16 mm〜30 mm | Unene wa ukuta wa jina S>30mm | ||||
Moto limekwisha au kuhalalisha kawaida | Kuzima +kukasirisha | Moto umevingirwa au wa kawaida | Kuzima +kukasirisha | Moto umevingirwa au wa kawaida | Kuzima +kukasirisha | |
Q345 | <0.45 | - | <0.47 | - | <0.48 | 一 |
Q390 | <0.46 | 一 | W0.48 | - | <0.49 | - |
Q420 | <0.48 | 一 | <0.50 | <0.48 | <0.52 | <0,48 |
Q460 | <0.53 | <0.48 | W0.55 | <0.50 | <0.55 | W0.50 |
Q500 | 一 | <0.48 | 一 | <0.50 | 一 | W0.50 |
Q550 | - | <0.48 | .一 | <0.50 | 一 | <0.50 |
Q62O | - | <0.50 | - | <0.52 | - | W0.52 |
Q690 | - | <0.50 | - | <0.52 | - | W0.52 |
Miundo ya mitambo ya chuma cha ubora wa juu cha kaboni na mabomba ya miundo ya aloi ya chini ya nguvu ya juu.
Daraja | Kiwango cha ubora | Nguvu ya Mavuno | Nguvu ya chini ya mavuno | Elongation baada ya kuvunja | Mtihani wa athari | |||
Unene wa ukuta wa majina | joto | Kunyonya nishati | ||||||
chini ya mm 16 | > 16 mm〜 | 〉30 mm | ||||||
30 mm | ||||||||
si chini ya | si chini ya | |||||||
10 | - | >335 | 205 | 195 | 185 | 24 | - | - |
15 | - | >375 | 225 | 215 | 205 | 22 | - | 一 |
20 | -- | > 410 | 245 | 235 | 225 | 20 | - | - |
25 | - | > 450 | 275 | 265 | 255 | 18 | - | - |
35 | - | >510 | 305 | 295 | 285 | 17 | 一 | - |
45 | - | 2590 | 335 | 325 | 315 | 14 | - | - |
20Mn | —• | > 450 | 275 | 265 | 255 | 20 | - | 一 |
25Mn | - | > 490 | 295 | 285 | 275 | 18 | - | - |
Q345 | A | 470-630 | 345 | 325 | 295 | 20 | - | 一 |
B | 4 ~ 20 | 34 | ||||||
C | 21 | 0 | ||||||
D | -20 | |||||||
E | -40 | 27 | ||||||
Q39O | A | 490-650 | 390 | 370 | 350 | 18 | ||
B | 20 | 34 | ||||||
C | 19 | 0 | ||||||
D | -20 | |||||||
E | -40 | 27 | ||||||
Q42O | A | 520〜680 | 420 | 400 | 380 | 18 | ||
B | 20 | 34 | ||||||
C | 19 | 0 | ||||||
D | -20 | |||||||
E | -40 | 27 | ||||||
Q46O | C | 550〜720 | 460 | 440 | 420 | 17 | 0 | 34 |
D | -20 | |||||||
E | -40 | 27 | ||||||
Q500 | C | 610〜770 | 500 | 480 | 440 | 17 | 0 | 55 |
D | -20 | 47 | ||||||
E | -40 | 31 | ||||||
Q550 | C | 670〜830 | 550 | 530 | 490 | 16 | 0 | 55 |
D | -20 | 47 | ||||||
E | -40 | 31 | ||||||
Q62O | C | 710〜880 | 620 | 590 | 550 | 15 | 0 | 55 |
D | -20 | 47 | ||||||
E | -40 | 31 | ||||||
Q690 | C | 770〜94. | 690 | 660 | 620 | 14 | 0 | 55 |
D | -20 | 47 | ||||||
E | -40 | 31 |
Mali ya mitambo ya mabomba ya chuma ya alloy
NO | Daraja | Utawala uliopendekezwa wa matibabu ya joto | Tabia za mvutano | Bomba la chuma lililofungwa au halijoto ya juu Hali ya uwasilishaji Ugumu wa Brinell HBW | ||||||
Kuzima (kurekebisha) | Kukasirisha | Mavuno NguvuMPa | Nguvu ya Mkazo MPa | Urefu baada ya kuvunja A% | ||||||
joto | Kipozea | Halijoto | Kipozea | |||||||
Kwanza | Pili | si chini ya | hakuna kubwa kuliko | |||||||
1 | 40Mn2 | 840 | Maji, mafuta | 540 | Maji, mafuta | 885 | 735 | 12 | 217 | |
2 | 45Mn2 | 840 | Maji, mafuta | 550 | Maji, mafuta | 885 | 735 | 10 | 217 | |
3 | 27SiMn | 920 | Maji | 450 | Maji, mafuta | 980 | 835 | 12 | 217 | |
4 | 40MnBc | 850 | mafuta | 500 | Maji, mafuta | 980 | 785 | 10 | 207 | |
5 | 45MnBc | 840 | mafuta | 500 | Maji, mafuta | 1 030 | 835 | 9 | 217 | |
6 | 20Mn2Bc'f | 880 | mafuta | 200 | Maji, hewa | 980 | 785 | 10 | 187 | |
7 | 20CrdJ | 880 | 800 | Maji, mafuta | 200 | Maji, hewa | 835 | 540 | 10 | 179 |
785 | 490 | 10 | 179 | |||||||
8 | 30Kr | 860 | mafuta | 500 | Maji, mafuta | 885 | 685 | 11 | 187 | |
9 | 35Kr | 860 | mafuta | 500 | Maji, mafuta | 930 | 735 | 11 | 207 | |
10 | 40Kr | 850 | mafuta | 520 | Maji, mafuta | 980 | 785 | 9 | 207 | |
11 | 45Kr | 840 | mafuta | 520 | Maji, mafuta | 1 030 | 835 | 9 | 217 | |
12 | 50Kr | 830 | mafuta | 520 | Maji, mafuta | 1 080 | 930 | 9 | 229 | |
13 | 38CrSi | 900 | mafuta | 600 | Maji, mafuta | 980 | 835 | 12 | 255 | |
14 | 20CrModJ | 880 | Maji, mafuta | 500 | Maji, mafuta | 885 | 685 | 11 | 197 | |
845 | 635 | 12 | 197 | |||||||
15 | 35CrMo | 850 | mafuta | 550 | Maji, mafuta | 980 | 835 | 12 | 229 | |
16 | 42CrMo | 850 | mafuta | 560 | Maji, mafuta | 1 080 | 930 | 12 | 217 | |
17 | 38CrMoAld | 940 | Maji, mafuta | 640 | Maji, mafuta | 980 | 835 | 12 | 229 | |
930 | 785 | 14 | 229 | |||||||
18 | 50 CrVA | 860 | mafuta | 500 | Maji, mafuta | 1 275 | 1 130 | 10 | 255 | |
19 | 2OCrMn | 850 | mafuta | 200 | Maji, hewa | 930 | 735 | 10 | 187 | |
20 | 20CrMnSif | 880 | mafuta | 480 | Maji, mafuta | 785 | 635 | 12 | 207 | |
21 | 3OCrMnSif | 880 | mafuta | 520 | Maji, mafuta | 1 080 | 885 | 8 | 229 | |
980 | 835 | 10 | 229 | |||||||
22 | 35CrMnSiA£ | 880 | mafuta | 230 | Maji, hewa | 1 620 | 9 | 229 | ||
23 | 20CrMnTie-f | 880 | 870 | mafuta | 200 | Maji, hewa | 1 080 | 835 | 10 | 217 |
24 | 30CrMnTie*f | 880 | 850 | mafuta | 200 | Maji, hewa | 1 470 | 9 | 229 | |
25 | 12CrNi2 | 860 | 780 | Maji, mafuta | 200 | Maji, hewa | 785 | 590 | 12 | 207 |
26 | 12CrNi3 | 860 | 780 | mafuta | 200 | Maji, hewa | 930 | 685 | 11 | 217 |
27 | 12Cr2Ni4 | 860 | 780 | mafuta | 200 | Maji, hewa | 1 080 | 835 | 10 | 269 |
28 | 40CrNiMoA | 850 | -- | mafuta | 600 | Maji, hewa | 980 | 835 | 12 | 269 |
29 | 45CrNiMoVA | 860 | - | mafuta | 460 | mafuta | 1 470 | 1 325 | 7 | 269 |
a. Marekebisho yanayoruhusiwa ya halijoto ya matibabu ya joto yaliyoorodheshwa kwenye jedwali: kuzima ± 15 ℃, joto la chini matiko ± 20 ℃, udongo wa matiko wa joto la juu 50 ℃.b. Katika mtihani wa mvutano, sampuli za transverse au longitudinal zinaweza kuchukuliwa. Katika kesi ya kutokubaliana, sampuli ya longitudinal hutumiwa kama msingi wa usuluhishi.c. Chuma kilicho na boroni kinaweza kurekebishwa kabla ya kuzima, na hali ya joto ya kawaida haipaswi kuwa kubwa kuliko joto lake la kuzima.d. Uwasilishaji kulingana na seti ya data iliyoainishwa na mwombaji. Wakati mwombaji hajataja, uwasilishaji unaweza kufanywa kulingana na data yoyote.e. Uzimaji wa kwanza wa chuma cha titan na Ming Meng unaweza kubadilishwa na kurekebisha.f. Uzimaji wa isothermal kwa 280 C ~320 C. g. Katika jaribio la mvutano, ikiwa Rel haiwezi kupimwa, Rp0.2 inaweza kupimwa badala ya Rel. |
Kupotoka kwa kuruhusiwa kwa kipenyo cha nje cha bomba la chuma
Aina ya bomba la chuma | Uvumilivu Unaoruhusiwa |
Bomba la chuma lililovingirwa moto | ± 1% D au ± 0.5, yoyote ni kubwa zaidi |
Bomba la chuma la baridi | Udongo 0,75% D au udongo 0.3, chochote kikubwa zaidi |
kupotoka inaruhusiwa ya ukuta unene wa moto akavingirisha (kupanuliwa) bomba chuma
Aina ya bomba la chuma | D | S/D | Uvumilivu Unaoruhusiwa |
Bomba la chuma lililovingirwa moto | <102 | - | ± 12.5% S au ± 0.4, yoyote ni kubwa zaidi |
>102 | <0.05 | ± 15% S au ± 0,4, yoyote ni kubwa zaidi | |
>0.05 〜0.10 | ± 12.5% S au ± 0.4, yoyote ni kubwa zaidi | ||
>0.10 | + 12.5%S -10%S | ||
Bomba la chuma lililopanuliwa la joto | 一 | 土 15%S |
Kupotoka kwa kuruhusiwa kwa unene wa ukuta wa bomba la chuma linalotolewa na baridi (lililovingirishwa).
| S | Uvumilivu Unaoruhusiwa |
Mchoro wa baridi (kukunja) | V | + 15% S Au 0.15, yoyote kubwa zaidi -10% S |
> 3 - 10 | + 12.5%S -10%S | |
>10 | 土 10%S |
Muundo wa kemikali, Kunyoosha, Ugumu, Mshtuko, Boga, Kupinda, Jaribio la Ultrasonic, Eddy mkondo, utambuzi, kugundua kuvuja, Mabati
Mirija ya Chuma Isiyo na Mfumo Kwa Madhumuni ya Kimuundo, Mirija ya Chuma Isiyo na Mfumo kwa Miundo ya Mitambo Katika Kiwango cha GB/8162-2008. Katika mfululizo wa chuma imefumwa, kuna aina ya nyenzo inayoitwa Q345B imefumwa chuma tube ni ya chini aloi mfululizo. Katika nyenzo za alloy ya chini, nyenzo hii ni ya kawaida. Q345 chuma imefumwa tube ni aina ya chuma tube nyenzo. Q ni mavuno ya nyenzo hii, na 345 ni mavuno ya nyenzo hii, ambayo ni karibu 345. Na thamani ya mavuno itapungua kwa ongezeko la unene wa nyenzo. Kiwango cha Q345A, sio athari; Q345B, ni nyuzi joto 20 athari ya kawaida; Darasa la Q345C, ni athari ya digrii 0; Q345D, ni -20 shahada athari; Darasa la Q345E, chini ya digrii 40. Thamani ya athari pia ni tofauti katika halijoto tofauti za athari. Q345A, Q345B, Q345C, Q345D, Q345E. Hii ni daraja la tofauti, ambayo inawakilisha, hasa athari joto ni tofauti.
Kiwango cha utekelezaji
1. Bomba isiyo na mshono kwa muundo (GB/T8162-2018) ni bomba la chuma isiyo imefumwa kwa muundo wa jumla na muundo wa mitambo. 2. Bomba la chuma lisilo na mshono kwa usafirishaji wa maji (GB/T8163-2018) hutumika kusambaza maji, mafuta, gesi na viowevu vingine kwa ujumla bomba la chuma isiyo imefumwa. 3. Mirija ya chuma isiyo na mshono kwa boilers za shinikizo la chini na la kati (GB3087-2018) ni chuma cha hali ya juu cha miundo ya kaboni iliyovingirishwa na kuvuta baridi (iliyovingirishwa) ya chuma isiyo na mshono, ambayo hutumiwa kwa utengenezaji wa mabomba ya mvuke yenye joto kali, mabomba ya maji ya kuchemsha ya aina mbalimbali. miundo ya boilers ya shinikizo la chini na la kati na mabomba ya mvuke yenye joto kali na mabomba ya matofali ya upinde kwa boilers za injini. 4. Chuma isiyo na mshono kwa boiler ya shinikizo la juu (GB5310-2018) hutumika kwa utengenezaji wa shinikizo la juu na uso wa kupokanzwa bomba la maji juu ya shinikizo na chuma cha juu cha kaboni, chuma cha aloi na bomba la chuma isiyo na joto linalostahimili joto.
Karatasi ya vipimo vya bomba la chuma isiyo imefumwa Q345B | |||
vipimo | vipimo | vipimo | vipimo |
14*3 | 38*5.5 | 89*5 | 133*18 |
14*3.5 | 42*3 | 89*5.5 | 159*6 |
14*4 | 42*3.5 | 89*6 | 159*6.5 |
16*3 | 42*4 | 89*7 | 159*7 |
18*2 | 42*5 | 89*7.5 | 159*8 |
18*3 | 42*6 | 89*8 | 159*9.5 |
18*4 | 42*8 | 89*9 | 159*10 |
18*5 | 45*3 | 89*10 | 159*12 |
19*2 | 45*4 | 89*11 | 159*14 |
21*4 | 45*5 | 89*12 | 159*16 |
22*2.5 | 45*6 | 108*4.5 | 159*18 |
22*3 | 45*7 | 108*5 | 159*20 |
22*4 | 48*4 | 108*6 | 159*28 |
22*5 | 48*4.5 | 108*7 | 168*6 |
25*2.5 | 48*5 | 108*8 | 168*7 |
25*3 | 48*6 | 108*9 | 168*8 |
25*4 | 48*7 | 108*10 | 168*9.5 |
25*5 | 48.3*12.5 | 108*12 | 168*10 |
25*5.5 | 51*3 | 108*14 | 168*11 |
27*3.5 | 51*3.5 | 108*15 | 168*12 |
27*4 | 51*4 | 108*16 | 168*14 |
27*5 | 51*5 | 108*20 | 168*15 |
27*5.5 | 51*6 | 114*5 | 168*16 |
28*2.5 | 57*4 | 114*6 | 168*18 |
28*3 | 57*5 | 114*7 | 168*20 |
28*3.5 | 57*5.5 | 114*8 | 168*22 |
28*4 | 57*6 | 114*8.5 | 168*25 |
30*2.5 | 60*4 | 114*9 | 168*28 |
32*2.5 | 60*4 | 114*10 | 180*10 |
32*3 | 60*5 | 114*11 | 194*10 |
32*3.5 | 60*6 | 114*12 | 194*12 |
32*4 | 60*7 | 114*13 | 194*14 |
32*4.5 | 60*8 | 114*14 | 194*16 |
32*5 | 60*9 | 114*16 | 194*18 |
34*3 | 60*10 | 114*18 | 194*20 |
34*4 | 76*4.5 | 133*5 | 194*26 |
34*4.5 | 76*5 | 133*6 | 219*6.5 |
34*5 | 76*6 | 133*7 | 219*7 |
34*6.5 | 76*7 | 133*8 | 219*8 |
38*3 | 76*8 | 133*10 | 219*9 |
38*3.5 | 76*9 | 133*12 | 219*10 |
38*4 | 76*10 | 133*13 | 219*12 |
38*4.5 | 89*4 | 133*14 | 219*13 |
38*5 | 89*4.5 | 133*16 | 219*14 |
219*16 | 273*36 | 356*28 | 426*12 |
219*18 | 273*40 | 356*36 | 426*13 |
219*20 | 273*42 | 377*9 | 426*14 |
219*22 | 273*45 | 377*10 | 426*17 |
219*24 | 298.5*36 | 377*12 | 426*20 |
219*25 | 325*8 | 377*14 | 426*22 |
219*26 | 325*9 | 377*15 | 426*30 |
219*28 | 325*10 | 377*16 | 426*36 |
219*30 | 325*11 | 377*18 | 426*40 |
219*32 | 325*12 | 377*20 | 426*50 |
219*35 | 325*13 | 377*22 | 457*9.5 |
219*38 | 325*14 | 377*25 | 457*14 |
273*7 | 325*15 | 377*32 | 457*16 |
273*8 | 325*16 | 377*36 | 457*19 |
273*9 | 325*17 | 377*40 | 457*24 |
273*9.5 | 325*18 | 377*45 | 457*65 |
273*10 | 325*20 | 377*50 | 508*13 |
273*11 | 325*22 | 406*9.5 | 508*16 |
273*12 | 325*23 | 406*11 | 508*20 |
273*13 | 325*25 | 406*13 | 508*22 |
273*15 | 325*28 | 406*17 | 558.8*14 |
273*16 | 325*30 | 406*22 | 530*13 |
273*18 | 325*32 | 406*32 | 530*20 |
273*20 | 325*36 | 406*36 | 570*12.5 |
273*22 | 325*40 | 406*40 | 610*13 |
273*25 | 325*45 | 406*55 | 610*18 |
273*28 | 356*9.5 | 406.4*50 | 610*78 |
273*30 | 356*12 | 406.4*55 | 624*14.2 |
273*32 | 356*15 | 406*60 | 824*16.5 |
273*35 | 356*19 | 406*65 | 824*20 |
Kipengele cha Kemikali
Daraja la chuma | Kiwango cha Ubora | Muundo wa Kemikali | ||||||||||||||
C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu | Nd | Mo | B | Als” | ||
Hakuna Kubwa Kuliko | Sio Chini ya | |||||||||||||||
Q345 | A | 0.2 | 0.5 | 1.7 | 0.035 | 0.035 | 0.3 | 0.5 | 0.2 | 0.012 | 0.1 | -- | - | |||
B | 0.035 | 0.035 | ||||||||||||||
C | 0.03 | 0.03 | 0.07 | 0.15 | 0.2 | 0.015 | ||||||||||
D | 0.18 | 0.03 | 0.025 | |||||||||||||
E | 0.025 | 0.02 | ||||||||||||||
A. Pamoja na Darasa za Q345A na Q345B, Chuma Kinapaswa Kuwa na Angalau Kipengele Kimoja cha Nafaka Iliyosafishwa Al, Nb, V, na Ti. Kulingana na Mahitaji, Msambazaji Anaweza Kuongeza Kipengele kimoja au Zaidi cha Nafaka Iliyosafishwa. Thamani ya Juu Itakuwa Kama Ilivyoainishwa kwenye Jedwali. Inapounganishwa, Nb + V + Ti Sio Zaidi ya 0.22%B. Kwa Alama za Q345, Q390, Q420 na Q46O, Mo + Cr Sio Zaidi ya 0.30%C. Wakati Cr na Ni ya Kila Daraja Inatumika Kama Vipengele vya Mabaki, Maudhui ya Cr na Ni Hayapaswi Kuwa Kubwa Kuliko 0.30%; Inapohitajika Kuongeza, Yaliyomo Yanafaa Kukidhi Mahitaji Katika Jedwali Au Iamuliwe Na Msambazaji Na Mnunuzi Kupitia Ushauri.D. Ikiwa Msambazaji Anaweza Kuhakikisha Kwamba Yaliyomo Nitrojeni Yanakidhi Mahitaji Katika Jedwali, Uchambuzi wa Maudhui ya Nitrojeni Huenda Usifanywe. Ikiwa Al, Nb, V, Ti na Vipengee Vingine vya Aloi Yenye Urekebishaji wa Nitrojeni Vimeongezwa kwa Chuma, Maudhui ya Nitrojeni Sio Kikomo. Maudhui ya Urekebishaji wa Nitrojeni Yanafaa Kubainishwa Katika Cheti cha Ubora. E. Unapotumia Alumini Kamili, Jumla ya Maudhui ya Alumini Alt≥0020%. |
Daraja | CEV Sawa na Kaboni (Sehemu ya Misa) /% | |||||
Unene wa Wastani wa Ukuta S≤ 16mm | Unene wa Majina ya Ukuta S2>16 Mm〜30 mm | Unene wa Ukuta wa Jina S>30mm | ||||
Imevingirwa Moto Au Iliyosawazishwa Ikawaida | Kuzima+Kukasirisha | Moto Umevingirwa Au Ukawaida | Kuzima+Kukasirisha | Moto Umevingirwa Au Ukawaida | Kuzima+Kukasirisha | |
Q345 | <0.45 | - | <0.47 | - | <0.48 | 一 |
Mali ya Mitambo
Sifa za Kiufundi za Chuma cha Ubora wa Juu cha Chuma cha Kaboni na Mabomba ya Chuma yenye Nguvu ya Chini ya Muundo
Daraja | Kiwango cha Ubora | Nguvu ya Mavuno | Nguvu ya Mavuno ya Chini | Elongation Baada ya Kuvunjika | Mtihani wa Athari | |||
Unene wa Ukuta wa Jina | Halijoto | Kunyonya Nishati | ||||||
<16 mm | > 16 mm〜 | 〉30 mm | ||||||
30 mm | ||||||||
Sio Chini ya | Sio Chini ya | |||||||
Q345 | A | 470-630 | 345 | 325 | 295 | 20 | - | 一 |
B | 4 ~ 20 | 34 | ||||||
C | 21 | 0 | ||||||
D | -20 | |||||||
E | -40 | 27 |
Mahitaji ya Mtihani
Muundo wa Kemikali: Kunyoosha, Ugumu, Mshtuko, Boga, Kupinda, Uchunguzi wa Ultrasonic, Eddy Sasa, Ugunduzi, Utambuzi wa Uvujaji, Mabati