1. Umgangatho: SANS 719
2. IBakala: C
3. Uhlobo: Ukumelana koMbane okuWelded (ERW)
4. Uluhlu lobungakanani:
- Ububanzi bangaphandle: 10mm ukuya ku-610mm
- Ukutyeba kweendonga: 1.6mm ukuya kwi-12.7mm
5. Ubude: 6 yeemitha, okanye njengoko kufuneka
6. Iziphelo: Isiphelo esicacileyo, isiphelo esibeveled
7. Unyango loMphezulu:
-Mnyama (uzimele)
- I-oyile
- Iigalvanized
- Ipeyintiwe
8. Ukusetyenziswa: Amanzi, ugutyulo, ukuhanjiswa ngokubanzi kolwelo
9. Ukuqulunqwa kwemichiza:
- Ikhabhoni (C): 0.28% max
- IManganese (Mn): 1.25% max
- Phosphorus (P): 0.040% max
- Isulfure (S): 0.020% max
- Silcon (Si): 0,04 % max.Okanye 0.135 % ukuya 0.25 %
10. IiPropati zoomatshini:
- Amandla okuqina: 414MPa min
- Amandla eSivuno: 290 MPa min
- Ukwandiswa: 9266 yahlulwe ngexabiso lamanani le-UTS yokwenyani
11. Inkqubo yokuVelisa:
- Umbhobho wenziwa ngokusebenzisa i-cold-formed kunye ne-high-frequency induction welded (HFIW) inkqubo.
- Umtya wenziwe kwimilo ye-tubular kwaye udityaniswe ngobude usebenzisa i-high-frequency induction welding.
12. Ukuhlolwa noVavanyo:
- Uhlalutyo lwekhemikhali lwemathiriyeli ekrwada
- Uvavanyo oluguquguqukayo lwe-tensile ukuqinisekisa ukuba iipropathi zoomatshini ziyahambelana neenkcukacha
- Uvavanyo lokulinganisa ukuqinisekisa ukukwazi kombhobho ukumelana nokuguqulwa
- Uvavanyo lwe-root bend (i-welds fusion yombane) ukuqinisekisa ukuguquguquka kombhobho kunye nokuthembeka
- Uvavanyo lwe-Hydrostatic ukuqinisekisa ukuvuza kokuqina kombhobho
13. Uvavanyo olungangonakalisi (NDT):
-Uvavanyo lweUltrasonic (UT)
-Eddy uvavanyo lwangoku (ET)
14. Isiqinisekiso:
- Isiqinisekiso sovavanyo lweMill (MTC) ngokwe-EN 10204/3.1
-Uhlolo lomntu wesithathu (ukhetho)
15. Ukupakishwa:
- Ngeenyanda
- Iminqwazi yeplastiki kwiziphelo zombini
- Iphepha elingangenwa ngamanzi okanye isigqubuthelo sentsimbi
-Ukumakisha: njengoko kufuneka (kubandakanya uMvelisi, ibakala, ubungakanani, umgangatho, inombolo yobushushu, iNombolo yeNqashiso njl.njl.)
16. Umqathango wokuhanjiswa:
- Njengoko isongiwe
- Iqhelekile
- Iqengqeleke iqhelekile
17. Ukumakisha:
- Umbhobho ngamnye kufuneka ubhalwe ngokusemthethweni ngolu lwazi lulandelayo:
- Igama lomenzi okanye uphawu lokuthengisa
- SANS 719 iBanga C
-Ubungakanani (idayimitha yangaphandle kunye nobukhulu bodonga)
- Inombolo yobushushu okanye inombolo yebhetshi
- Umhla wokwenziwa kwayo
- Ukuhlolwa kunye neenkcukacha zesiqinisekiso sovavanyo
18. IiMfuno eziZodwa:
- Imibhobho inokubonelelwa ngeengubo ezikhethekileyo okanye ii-linings zezicelo ezithile (umzekelo, i-epoxy coating yokumelana nokubola).
19. Iimvavanyo ezongezelelweyo (ukuba ziyafuneka):
- Uvavanyo lwempembelelo ye-Charpy V-notch
- Uvavanyo lokuqina
- Uviwo lwe-macrostructure
- Uviwo lweMicrostructure
20. Ukunyamezela:
-Ngaphandle kweDiameter
-Ubukhulu bodonga
Ubukhulu bodonga lombhobho buya kuthi, ngokuxhomekeke kunyamezelo lwe +10 % okanye -8 %, lube yenye yamaxabiso afanelekileyo anikwe kuluhlu lwesi-3 ukuya ku-6 lwetheyibhile engezantsi, ngaphandle kokuba kuvunyelwene ngenye indlela phakathi komvelisi kunye nomthengi.
-Ukuthe tye
Nakuphi na ukuphambuka kombhobho ukusuka kumgca othe ngqo, akuyi kudlula i-0,2 % yobude bombhobho.
Nakuphi na ukungaphandle komjikelo (ngaphandle kwalowo kubangelwa yi-sag), yemibhobho yedayamitha yangaphandle engaphezu kwe-500 mm ayisayi kudlula i-1 % yobubanzi obungaphandle (obona bukhulu be-ovality 2 %) okanye i-6 mm, nokuba yeyiphi engaphantsi.
Nceda uqaphele ukuba olu xwebhu lwedatha oluneenkcukacha lubonelela ngolwazi olubanzi malungaSANS 719 Grade C imibhobho.Iimfuno ezithile zingahluka ngokusekelwe kwiprojekthi kunye neenkcukacha ezichanekileyo zombhobho ofunekayo.
Ixesha lokuposa: Apr-28-2024