1. Standard: SANS 719
2. Giredhi: C
3. Rudzi: Welded yekudzivirira magetsi (ERW)
4. Hukuru hweSaizi:
- Dhayamita yekunze: 10mm kusvika 610mm
- Ukobvu hwemadziro: 1.6mm kusvika 12.7mm
5. Kureba: mamita matanhatu, kana sezvinodiwa
6. Migumo: Mugumo usina kujeka, mugumo wakachekwa
7. Kurapa Pamusoro:
- Dema (rinozvida)
- Yakazorwa mafuta
- Yakagadzikwa
- Yakapendwa
8. Mashandisirwo: Mvura, tsvina, kutakurwa kwemvura
9. Kuumbwa kweMakemikoro:
- Kabhoni (C): 0.28% yepamusoro
- Manganese (Mn): 1.25% yakakwira
- Phosphorus (P): 0.040% zvakanyanya
- Sarufa (S): 0.020% yakakwira
- Silcon (Si): 0.04% yepamusoro. Kana 0.135% kusvika 0.25%
10. Zvimiro zveMichina:
- Simba reKubata: 414MPa min
- Simba reKuburitsa: 290 MPa min
- Kureba: 9266 yakakamurwa nenhamba yeUTS chaiyo
11. Maitiro Ekugadzira:
- Pombi iyi inogadzirwa uchishandisa maitiro e "cold-formed" uye "high-frequency induction welded" (HFIW).
- Chidimbu chacho chinoumbwa kuita chimiro chechubhu uye chinosungirirwa kwenguva refu uchishandisa welding ye induction inofambiswa nefrequency yepamusoro.
12. Kuongorora neKuedza:
- Kuongororwa kwemakemikari kwezvinhu zvakabikwa
- Kuedza kwekutenderera kwe transverse kuona kuti zvivakwa zvemakanika zvinoenderana nezvinodiwa
- Kuedza kutetepa kuti pave nechokwadi chekuti pombi inogona kutsungirira kuchinjika
- Kuedza kukotamisa midzi (electric fusion welds) kuti pave nechokwadi chekuti pombi yacho inochinjika uye yakasimba.
- Kuedza kwemvura kuti pave nechokwadi chekuti pombi yacho inodonhedza mvura
13. Kuedzwa Kusingaparadze (NDT):
- Kuongororwa kweUltrasonic (UT)
- Kuedzwa kweEddy (ET)
14. Chitupa:
- Chitupa chekuyedza chigayo (MTC) zvichienderana neEN 10204/3.1
- Kuongorora kwevamwe (sarudzo)
15. Kurongedza:
- Mumapaketi
- Zvivharo zvepurasitiki kumativi ese
- Chifukidziro chepepa risingapindi mvura kana jira resimbi
- Kumaka: sezvinodiwa (kusanganisira Mugadziri, giredhi, saizi, standard, nhamba yekupisa, Nhamba yeLot nezvimwewo)
16. Mamiriro Ekutumira:
- Sezvakakungurutswa
- Yakajairika
- Yakatenderedzwa zvakajairwa
17. Kumaka:
- Pombi yega yega inofanira kunge yakanyorwa zvakanaka neruzivo runotevera:
- Zita remugadziri kana chiratidzo chekutengeserana
- SANS 719 Giredhi C
- Saizi (dhayamita yekunze uye ukobvu hwemadziro)
- Nhamba yekupisa kana nhamba yebatch
- Zuva rekugadzirwa
- Ruzivo rwekuongorora uye bvunzo
18. Zvinodiwa Zvakakosha:
- Mapaipi anogona kupihwa machira akakosha kana machira ekushandisa (semuenzaniso, epoxy coating yekudzivirira ngura).
19. Miedzo Yekuwedzera (Kana Inodiwa):
- Charpy V-notch mhedzisiro yebvunzo
- Kuedza kuoma
- Kuongorora macrostructure
- Kuongorora zvivako zvidiki
20. Kushivirira:
-Dhayamita Yekunze
-Kukora kwemadziro
Ukobvu hwemadziro epombi hunofanira, zvichienderana nekushivirira kwe +10% kana -8%, kuva humwe hwehunhu hwakakodzera hwakapihwa mumakoramu 3 kusvika ku6 etafura iri pazasi, kunze kwekunge zvabvumiranwa neimwe nzira pakati pemugadziri nemutengi.
-Kururama
Chero kutsauka kwepombi kubva pamutsetse wakatwasuka hakufanirwe kudarika 0.2% yehurefu hwepombi.
Chero kutenderera kusina kunaka (kunze kwekunge kwakonzerwa nekudonha kwemvura), kwemapaipi ane dhayamita yekunze inopfuura 500 mm hakufanirwe kudarika 1% yedhayamita yekunze (kureva ovality yepamusoro 2%) kana 6 mm, chero ipi zvayo iri pasi.
Ndapota cherechedzai kuti bepa iri rine ruzivo rwakadzama rinopa ruzivo rwakakwana nezveMapaipi eSANS 719 eGiredhi CZvinodiwa zvakananga zvinogona kusiyana zvichienderana neprojekiti uye kutsanangurwa chaiko kwepombi kunodiwa.
Nguva yekutumira: Kubvumbi-28-2024