1. Umgangatho: SANS 719
2. Ibanga: C
3. Uhlobo: I-Welded yokumelana nombane (ERW)
4. Uluhlu lobungakanani:
- Ububanzi obungaphandle: 10mm ukuya kwi-610mm
- Ubukhulu bodonga: 1.6mm ukuya kwi-12.7mm
5. Ubude: 6 iimitha, okanye njengoko kufuneka
6. Iziphelo: Isiphelo esicacileyo, isiphelo esijikelezileyo
7. Unyango Lomphezulu:
- Mnyama (ozimibalabala)
- Inamafutha
- I-Galvanised
- Ipeyintiwe
8. Izicelo: Amanzi, indle, ukuhanjiswa ngokubanzi kolwelo
9. Ukwakhiwa kweekhemikhali:
- Ikhabhoni (C): 0.28% ubuninzi
- IManganese (Mn): 1.25% ubuninzi
- I-Phosphorus (P): 0.040% ubuninzi
- I-Sulfur (S): 0.020% ubuninzi
- I-Silcon (i-Si): 0.04% ubuninzi. Okanye 0.135% ukuya kwi-0.25%
10. Iipropati zoomatshini:
- Amandla okuThamba: 414MPa min
- Amandla okuvelisa: 290 MPa min
- Ukwandiswa: 9266 yahlulwe ngexabiso lenani le-UTS yokwenyani
11. Inkqubo yoMveliso:
- Umbhobho wenziwa kusetyenziswa inkqubo ye-induction welded eyenziwe ngokubandayo kunye ne-high-frequency induction welded (HFIW).
- Umcu wenziwe ube yimilo yetyhubhu kwaye udityaniswe ngobude kusetyenziswa i-high-frequency induction welding.
12. Uhlolo noVavanyo:
- Uhlalutyo lweekhemikhali lwezinto ezikrwada
- Uvavanyo lokuxinana olujikelezayo ukuqinisekisa ukuba iipropati zoomatshini ziyahambelana nemigaqo
- Uvavanyo lokuthamba ukuqinisekisa ukuba umbhobho uyakwazi ukumelana nokuguquguquka
- Uvavanyo lokugoba kweengcambu (ii-electric fusion welds) ukuqinisekisa ukuguquguquka nokuthembeka kombhobho
- Uvavanyo lwe-hydrostatic ukuqinisekisa ukuba umbhobho uyavuza kwaye awuvali
13. Uvavanyo Olungonakalisiyo (NDT):
- Uvavanyo lwe-Ultrasonic (UT)
- Uvavanyo lwangoku lwe-Eddy (ET)
14. Isiqinisekiso:
- Isatifikethi sovavanyo lokugaya (MTC) ngokwe-EN 10204/3.1
- Uhlolo lomntu wesithathu (ukhetho)
15. Ukupakisha:
- Kwiibhanti
- Izigqubuthelo zeplastiki kuzo zombini iziphelo
- Iphepha elingangeni manzi okanye isiciko sephepha lentsimbi
- Ukumakisha: njengoko kufuneka (kubandakanya uMenzi, ibakala, ubungakanani, umgangatho, inombolo yobushushu, inombolo yeLoti njl.njl.)
16. Imeko yokuhanjiswa:
- Njengoko iqengqelekile
- Iqhelekile
- Ijikelezwe ngendlela eqhelekileyo
17. Ukumakisha:
- Umbhobho ngamnye kufuneka uphawulwe kakuhle ngolwazi olulandelayo:
- Igama okanye uphawu lomenzi
- I-SANS 719 Ibanga C
- Ubungakanani (ububanzi bangaphandle kunye nobukhulu bodonga)
- Inombolo yobushushu okanye inombolo yebhetshi
- Umhla wokwenziwa
- Iinkcukacha zesatifikethi sokuhlola novavanyo
18. Iimfuno ezizodwa:
- Iipayipi zinokubonelelwa ngeengubo ezikhethekileyo okanye ii-linings zezicelo ezithile (umz., i-epoxy coating yokumelana nokugqwala).
19. Uvavanyo olongezelelweyo (Ukuba luyimfuneko):
- Uvavanyo lweCharpy V-notch impact
- Uvavanyo lokuqina
- Uvavanyo lwesakhiwo esikhulu
- Uvavanyo lwesakhiwo se-microstructure
20. Ukunyamezelana:
-Ububanzi bangaphandle
-Ubukhulu bodonga
Ubukhulu bodonga lombhobho, obuxhomekeke ekunyamezeleni kwe-+10% okanye -8%, bube yenye yexabiso elifanelekileyo elinikwe kwiikholamu 3 ukuya ku-6 zetheyibhile engezantsi, ngaphandle kokuba kuvunyelwene ngenye indlela phakathi komenzi nomthengi.
-Ukuthe tye
Nakuphi na ukuphambuka kombhobho ukusuka kumgca othe tye, akumele kudlule i-0.2% yobude bombhobho.
Nakuphi na ukungaguquguquki (ngaphandle koko kubangelwe kukugoba), kwemibhobho enobubanzi obungaphandle obungaphezulu kwama-500 mm akumele kudlule i-1% yobubanzi obungaphandle (oko kukuthi, ubukhulu be-ovality yi-2%) okanye i-6 mm, nokuba yeyiphi na engaphantsi.
Nceda uqaphele ukuba eli phepha ledatha lineenkcukacha linika ulwazi olupheleleyo malungaImibhobho ye-SANS 719 Grade CIimfuno ezithile zinokwahluka ngokusekwe kwiprojekthi kunye nenkcazo echanekileyo yombhobho efunekayo.
Ixesha leposi: Epreli-28-2024