GB/T 18248-2021
Txheej txheem cej luam
Tus Qauv: GB/T 18248-2021
Pawg Qib: 37Mn, 30CrMo, 35CrMo, 42CrMo, 30CrMnSiA, 34CrMo4, thiab lwm yam
Thickness: 1 - 100 hli
Sab Nraud Txoj Kab uas hla (Puag ncig): 10 - 1000 hli
Ntev: Ntev ntev lossis ntev random
Tshooj Puab: Puag ncig
Qhov chaw ntawm keeb kwm: Tuam Tshoj
Daim Ntawv Pov Thawj: ISO9001: 2008
Cov Hlau Los Yog Tsis Yog: Cov Hlau
Daim Ntawv Thov: Lub raj xa roj
Kev Kho Mob Nto: Raws li tus neeg yuav tsum tau ua
Txheej Txheem: Kub Dov / Txias Kos
Kev kho cua sov: Annealing / normalizing
Cov Yeeb Nkab Tshwj Xeeb: Cov Yeeb Nkab Phab Ntsa Tuab
Siv: Lub raj xa roj
Kev Ntsuas: ET/UT
Daim Ntawv Thov
Cov kav hlau tsis muaj qhov txuas siv rau kev tsim cov plhaub ntawm cov thooj voos kheej kheej roj thiab cov khoom siv sib sau ua ke
Qib Tseem Ceeb
Qib ntawm Alloy Structural Steel: 37Mn, 30CrMo, 35CrMo, 42CrMo, 30CrMnSiA, 34CrMo4
Cheebtsam Tshuaj
| Qib Hlau | Cov tshuaj lom neeg muaj pes tsawg leeg | |||||||||
| C | Si | Mn | P | S | P+S | Cr | Mo | Ni | Cu | |
| 37Mna | 0.34 ~ 0.38 | 0.10 ~ 0.35 | 1.35 ~ 1.75 | ≤0.020 | ≤0.010 | ≤0.025 | ≤0.30 | - | ≤0.30 | ≤0.20 |
| 30CrMoib,c | 0.26 ~ 0.33 | 0.17～0.37 | 0.40 ～ 0.70 | ≤0.020 | ≤0.010 | ≤0.025 | 0.80 ~ 1.10 | 0.15 ~ 0.25 | ≤0.30 | ≤0.20 |
| 35CrMoa | 0.32 ~ 0.40 | 0.17～0.37 | 0.40 ～ 0.70 | ≤0.020 | ≤0.010 | ≤0.025 | 0.80 ~ 1.10 | 0.15 ~ 0.25 | ≤0.30 | ≤0.20 |
| 42CrMoib,d | 0.38 ~ 0.45 | 0.17～0.37 | 0.50 ～ 0.80 | ≤0.020 | ≤0.010 | ≤0.025 | 0.90 ~ 1.20 | 0.15 ~ 0.25 | ≤0.30 | ≤0.20 |
| 30CrMnSiA | 0.28 ~ 0.34 | 0.90 ~ 1.20 | 0.80 ~ 1.10 | ≤0.020 | ≤0.020 | ≤0.030 | 0.80 ~ 1.10 | ≤0.10 | ≤0.30 | ≤0.20 |
| 34CrMo4 | 0.30 ～ 0.37 | 0.15 ~ 0.35 | 0.60 ~ 0.90 | ≤0.020 | ≤0.010 | ≤0.025 | 0.90 ~ 1.20 | 0.15 ~ 0.30 | ≤0.30 | ≤0.20 |
| a. Nws yuav tsum ua kom tau raws li V + Nb + Ti + B + Zr ≤ 0.15%. b. Raws li qhov yuav tsum tau ua ntawm tus neeg yuav khoom, tom qab kev sib tham ntawm tus neeg muag khoom thiab tus neeg yuav khoom, thiab nrog rau cov lus qhia hauv daim ntawv cog lus, nws tuaj yeem teev tseg tias Al yuav tsum ntau dua lossis sib npaug rau 0.020%. c. Cov xaj tuaj yeem tso rau 30CrMoE, uas nws cov tshuaj lom neeg sib xyaw zoo ib yam li 30CrMo. d. Cov xaj tuaj yeem tso rau 42CrMoE, uas nws cov tshuaj lom neeg sib xyaw zoo ib yam li 42CrMo. | ||||||||||
Khoom Siv Kho Tshuab
| Qib | Kev kho cua sov uas pom zoo | Cov khoom siv kho tshuab ntev | |||||||
| Kev Ua Kom Kub (Normalizing) | Kev ua kom sov | lub zog tensile RmPa | Lub zog qis dua ReLBMPa | Kev ncab tom qab tawgA% | Kev nqus zog ntawm kev cuam tshuam | ||||
| kub℃ | Cov dej txias | kub ℃ | Cov dej txias | Tsis tsawg dua | Kub ntsuas ℃ | KV2J Tsis tsawg dua | |||
| 37Mn | 820-860 | dej | 550-650 | Huab cua | 750 | 630 | 16 | -50 | 27 |
| 830-870 | Huab cua | - | - | 700 | 520 | 16 | -20 | 27 | |
| 30CrMo | 860-900 | dej,Roj | 490-590 | dej,Roj | 930 | 785 | 12 | -50 | 27 |
| 35CrMo | 830-870 | dej,Roj | 500-600 | dej,Roj | 980 | 835 | 12 | -50 | 27 |
| 42CrMo | 830-870 | Roj | 510-610 | dej,Roj | 1080 | 930 | 12 | -50 | 27 |
| 30CrMnSiA | 860-900 | Roj | 470-570 | dej,Roj | 1080 | 885 | 10 | Kub hauv chav tsev | 27 |
| a. Qhov kub ntawm qhov kev sim tensile yog qhov kub hauv chav.b.Yog tias ReLtsis tuaj yeem ntsuas tau, Rp0.2puas yog kuv ntsuas tau es tsis yog ReLc. Thaum tus neeg yuav khoom teev 4130X lossis 30CrMoE ua qib rau kev xa khoom, tus nqi siv ntawm cov khoom siv kho tshuab tuaj yeem raws li 30CrMo.d. Thaum tus neeg yuav khoom teev 34CrMo4 qib rau kev xa khoom, cov khoom siv kho tshuab tuaj yeem xa mus rau 35CrMo.e. Thaum tus neeg yuav khoom teev cov qib 4142 lossis 42CrMoE rau kev xa khoom, tus nqi siv ntawm cov khoom siv kho tshuab tuaj yeem raws li 42CrMo. | |||||||||
Kev kam rau siab
| Cov txheej txheem tsim cov yeeb nkab hlau | ntau yam loj | Kev Hloov Pauv Tso Cai Hauv Sab Nraud Txoj Kab uas hla | Kev hloov pauv ntawm phab ntsa tuab | |
| Qib yooj yim PA | PC theem siab heev | |||
| Kub dov | D＜339.7 | ±1%D | +25%Smin 0 | +25%Smin 0 |
| D≥339.7 | +30%Smin 0 | +25%Smin 0 | ||
| Txias kos (dov) Cov yeeb nkab | tag nrho | ±0.75%D | +22.5%Smin 0 | +15%Smin 0 |
Kev Xav Tau Xeem
Ntxiv rau kev ua kom ntseeg tau tias muaj cov tshuaj lom neeg thiab cov khoom siv kho tshuab, kev sim hydraulic, kev tshuaj xyuas electromagnetic, kev sim cov khoom tsis yog hlau, thiab kev sim tsis ua puas tsuaj (kev sim ultrasonic thiab kev sim cov khoom sib nqus) kuj tseem yuav ua.
Kev Muaj Peev Xwm Muab Khoom
Kev Muaj Peev Xwm Muab Khoom: 2000 Tons Ib Hlis Ib Qib ntawm GB / T18248-2021 Alloy Steel Pipe
Ntim Khoom
Hauv Cov Pob Khoom Thiab Hauv Lub Thawv Ntoo Muaj Zog
Kev xa khoom
7-14 hnub yog tias muaj Tshuag, 30-45 hnub los tsim khoom
Kev Them Nyiaj
30% tso nyiaj, 70% L/C lossis B/L daim qauv lossis 100% L/C thaum pom
Lub raj xa dej
ASME SA-106/SA-106M-2015
ASTMA210 (A210M) -2012
ASME SA-213/SA-213M
