GB/T 18248-2021
Dulmar Guud
Heerka: GB/T 18248-2021
Kooxda Darajada: 37Mn，30CrMo，35CrMo，42CrMo，30CrMnSiA，34CrMo4, iwm.
Dhumucda: 1 - 100 mm
Dhexroorka Dibadda (Goobo): 10 - 1000 mm
Dhererka: Dherer go'an ama dherer aan kala sooc lahayn
Qaabka Qaybta: Wareeg
Meesha Asalka ah: Shiinaha
Shahaadada: ISO9001:2008
Daawaha ama Maya: Daawaha
Codsiga: tube dhululubo gaaska
Daaweynta Dusha Sare: Sida looga baahan yahay macaamiisha
Farsamada: Kuleyl la duubay/Qabow la sawiray
Daaweynta kulaylka: Qaboojinta/caadeynta
Tuubo Gaar ah: Tuubo Darbi ah oo Qaro weyn leh
Isticmaalka: Tuubada dhululubada gaaska
Tijaabada: ET/UT
Codsiga
Tuubooyinka birta ah ee aan kala go 'lahayn ee loo isticmaalo soo saarista qolofka dhululubada gaaska iyo kaydiyeyaasha
Fasalka ugu Muhiimsan
Heerka Birta Qaabdhismeedka Daawaha: 37Mn，30CrMo，35CrMo，42CrMo，30CrMnSiA，34CrMo4
Qaybta Kiimikada
| Heerka Birta | Halabuurka kiimikada | |||||||||
| 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 |
| 30CrMoa,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 |
| 42CrMoa,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. Waa inay qancisaa V + Nb + Ti + B + Zr ≤ 0.15%. b. Sida waafaqsan shuruudaha iibsadaha, ka dib gorgortan dhexmara alaab-qeybiyaha iyo iibsadaha, iyo iyadoo la raacayo shuruudaha ku xusan qandaraaska, waxaa la cayimi karaa in Al uu ka weynaado ama la mid noqdo 0.020%. c. Dalabaadka waxaa la dhigi karaa 30CrMoE, oo halabuurka kiimikadiisu la mid yahay kan 30CrMo. d. Dalabaadka waxaa la dhigi karaa 42CrMoE, oo halabuurka kiimikadiisu la mid yahay kan 42CrMo. | ||||||||||
Hantida Farsamada
| Fasal | Nidaamka daaweynta kulaylka ee lagu taliyay | Sifooyinka farsamada ee dhererka dheer | |||||||
| Demin (Caadiyeynta) | Qaboojiyaha | xoogga jiidista RmPa | Xoog wax soo saar oo hooseeya ReLBMPA | Dheellitirka ka dib jabka A% | Saameynta nuugista tamarta | ||||
| heerkulka℃ | Qaboojiye | heerkulka℃ | Qaboojiye | Aan ka yarayn | Heerkulka Imtixaanka℃ | KV2J Aan ka yarayn | |||
| 37Mn | 820-860 | biyo | 550-650 | Hawada | 750 | 630 | 16 | -50 | 27 |
| 830-870 | Hawada | - | - | 700 | 520 | 16 | -20 | 27 | |
| 30CrMo | 860-900 | biyo、Saliid | 490-590 | biyo、Saliid | 930 | 785 | 12 | -50 | 27 |
| 35CrMo | 830-870 | biyo、Saliid | 500-600 | biyo、Saliid | 980 | 835 | 12 | -50 | 27 |
| 42CrMo | 830-870 | Saliid | 510-610 | biyo、Saliid | 1080 | 930 | 12 | -50 | 27 |
| 30CrMnSiA | 860-900 | Saliid | 470-570 | biyo、Saliid | 1080 | 885 | 10 | Heerkulka qolka | 27 |
| a. Heerkulka tijaabada jilicsanaanta wuxuu ahaa heerkulka qolka. b. Haddii ReLlama cabbiri karo, Rp0.2ma la ii cabbiri karaa halkii R laga cabbiri lahaaeLc. Marka iibsaduhu uu ku qeexo 4130X ama 30CrMoE inay yihiin darajada keenista, qiimaha tixraaca ee sifooyinka farsamada waxaa lagu salayn karaa 30CrMo.d. Marka iibsaduhu uu qeexo darajada 34CrMo4 ee keenista, sifooyinka farsamada waxay tixraaci karaan 35CrMo.e. Marka iibsaduhu uu qeexo darajooyinka 4142 ama 42CrMoE ee keenista, qiimaha tixraaca ee sifooyinka farsamada waxaa lagu salayn karaa 42CrMo. | |||||||||
Dulqaad
| Hababka wax soo saarka tuubooyinka birta ah | cabbirro kala duwan | Kala duwanaanshaha la oggol yahay ee dhexroorka dibadda | Kala leexashada la oggol yahay ee dhumucda derbiga | |
| Heerka aasaasiga ah ee PA | PC heer sare ah | |||
| Kulul oo la duubay | D＜339.7 | ±1%D | +25%Daqiiqad 0 | +25%Daqiiqad 0 |
| D≥339.7 | +30% Daqiiqo 0 | +25%Daqiiqad 0 | ||
| Qabow la soo jiiday (la duubay) Ppipe | dhammaan | ±0.75%D | +22.5%Daqiiqad 0 | +15%Daqiiqad 0 |
Shuruudaha Imtixaanka
Marka laga soo tago hubinta halabuurka kiimikada iyo sifooyinka farsamada, tijaabooyinka haydarooliga, kormeerka elektromagnetic-ka, tijaabooyinka ku darista aan biraha ahayn, iyo tijaabooyinka aan burburin (tijaabada ultrasound-ka iyo tijaabada walxaha magnetic-ka) ayaa sidoo kale la sameyn doonaa.
Awoodda Bixinta
Awoodda Bixinta: 2000 Tan Bishiiba Heerka GB/T18248-2021 Tuubada Birta Daawaha
Baakad
Xirmooyin iyo Sanduuq Alwaax ah oo Xoog leh
Bixinta
7-14 maalmood haddii kaydku jiro, 30-45 maalmood in la soo saaro
Lacag bixinta
30% depsoit, 70% L/C ama nuqul B/L ah ama 100% L/C marka la arko
Tuubo kuleyliye
ASME SA-106/SA-106M-2015
ASTMA210(A210M)-2012
ASME SA-213/SA-213M
