ASTM A500 ipayipi resimbi yekabhoni yakasungirirwa uye isina musono yesimbi yekabhoni inoshandiswa pakuvaka mabhiriji akasungirirwa, akakotamiswa, kana kuti akasungwa nemabhori uye zvivakwa zvekuvaka pamwe chete nemabasa akajairika ekuvaka.
Giredhi Bichubhu yesimbi yekabhoni yakagadzirwa nenzira dzakasiyana-siyana inotonhora yakasungirirwa kana isina musono ine simba rekugadzira risingasviki 315 MPa [46,000 psi] uye simba rekudhonza risingasviki 400 MPa [58,000], iyo inoshandiswa mumapurojekiti akasiyana-siyana ekuvaka nekugadzira michina nekuda kwekugadzikana kwayo kwakanaka uye kugara kwenguva refu.
ASTM A500 inoronga mapaipi esimbi muzvikamu zvitatu,Giredhi B,giredhi C, uye giredhi D.
Zvemachubhu anedhayamita yekunze ≤ 2235mm [88in]uyeukobvu hwemadziro ≤ 25.4mm [1in].
Zvisinei, kana nzira yekuwedera yeERW ikashandiswa, mapaipi ane dhayamita yepamusoro ye660 mm uye ukobvu hwemadziro hwe20 mm chete ndiwo anogona kugadzirwa.
Kana uchida kutenga pombi ine ukobvu hwemadziro hwakakura, unogona kusarudza kushandisa nzira yekubatanidza yeSAW.
CHS: Zvikamu zvine maburi akatenderera.
RHS: Zvikamu zvine mhango zvina sikweya kana kuti rectangular.
EHS: Zvikamu zvine mhango dzakaita sedenderedzwa.
Simbi inofanira kugadzirwa neimwe kana kupfuura yenzira dzinotevera:okisijeni yekutanga kana chitofu chemagetsi.
Maitiro Ekutanga Eokisijeni: Iyi inzira yemazuva ano yekugadzira simbi nekukurumidza, iyo inoderedza huwandu hwekabhoni nekufemera okisijeni musimbi yakanyungudutswa uku ichibvisa zvimwe zvinhu zvisingadiwe zvakaita sesarufa nephosphorus. Yakakodzera kugadzirwa kwesimbi yakawanda nekukurumidza.
Maitiro eFirnace yeMagetsi: Maitiro eFirnace yeMagetsi anoshandisa arc yemagetsi inopisa zvakanyanya kunyungudutsa marara uye kuderedza simbi zvakananga, uye inonyanya kubatsira pakugadzira mamakisi akakosha uye kudzora masanganiswa ealloy, pamwe nekugadzira mabheti madiki.
Machubhu anofanira kugadzirwa neyakasungirirwa nemagetsi inodzivirira kupisa (ERW)maitiro.
Pombi yeERW inzira yekugadzira weld nekukomba simbi mu cylinder uye kushandisa resistance uye pressure pamwe chete nehurefu hwayo.
Machubhu eGiredhi B anogona kuvharwa kana kuderedzwa kushushikana.
Kuumbwa kwemakemikari esimbi yeASTM A500 Grade B kunosanganisira huwandu hwekabhoni nemanganese zvine mwero kuti zvive nechokwadi chekuti michina inoshanda zvakanaka uye kuti inogona kusvetwa zvakanaka. Panguva imwe chete, huwandu hwephosphorus nesarufa hunodzorwa zvakasimba kudzivirira kupwanyika, uye kuwedzerwa kwemhangura zvine mwero kunovandudza kuramba kwengura.
Zvinhu izvi zvakakodzera kushandiswa mukuvaka, kunyanya munzvimbo dzinoda kuchinjika zvakanaka uye kugara kwenguva refu.
Masampuli anofanira kusangana nezvinodiwa zveASTM A370, Appendix A2.
| Rondedzero | Giredhi B | |
| Simba rekusimba, min | psi | 58,000 |
| MPa | 400 | |
| Simba rekupa, min | psi | 46,000 |
| MPa | 315 | |
| Kureba kwemainji maviri (50 mm), miniti,C | % | 23A |
| AInoshanda kune ukobvu hwemadziro hwakatarwa (t) hwakaenzana kana kupfuura 0.180 in. [4.57mm]. Kune ukobvu hwemadziro hwakatarwa hwakareruka, kukosha kwehurefu hushoma hunofanira kuverengerwa nefomura: percentage elongation mu 2 in. [50 mm] = 61t+ 12, yakatenderedzwa kusvika padyo muzana. Kune A500M shandisa fomura inotevera: 2.4t+ 12, yakatenderedzwa kusvika padyo muzana. CHunhu hushoma hwekureba hwakatarwa hunoshanda chete kune bvunzo dzakaitwa usati watumira chubhu. | ||
Weldingdkugonatyakatangwa: Uchishandisa muenzaniso wakareba masendimita 100 (100 mm), gadzirisa muenzaniso ne weld pa 90° kusvika paunoda kurodha kusvika daro riri pakati pemaplate rava pasi pe 2/3 yedhayamita yekunze yepombi. Muenzaniso haufanirwe kutsemuka kana kupwanyika mukati kana kunze kwepombi panguva iyi.
Kuedzwa kwekufamba kwepombi: ramba uchikotamisa muenzaniso kusvika daro riri pakati pemaplate riri pasi pehafu yedhayamita yekunze kwepombi. Panguva ino, pombi haifanirwe kunge ine mitswe kana kutsemuka pamusoro pemukati nekunze.
Kuvimbikatyakatangwa: Ramba uchikotamisa muenzaniso kusvika watyoka kana kusvika zvinodiwa nehukobvu hwemadziro zvazadzikiswa. Kana humbowo hwekuti ply peel, zvinhu zvisina kugadzikana, kana welds dzisina kukwana zvikawanikwa panguva yekuedzwa kwekukotamisa, muenzaniso wacho uchaonekwa usina kugutsa.
Kuedza kupfura kunowanikwa pamachubhu akatenderera ane dhayamita ≤ 254 mm (10 in) mudhayamita, asi hazvimanikidzwi.
Machubhu ese anofanira kunge asina zvikanganiso uye anofanira kunge akagadzirwa nemaoko.
Kusakwana kwepamusoro kunofanira kuverengerwa sekusakwana kana kudzika kwadzo kunoderedza ukobvu hwemadziro hwasara kusvika pasi pe90% yeukobvu hwemadziro hwakatarwa.
Zvikanganiso zvinosvika 33% zvekudzika kwemadziro zvakatarwa zvinogona kubviswa zvachose nekucheka kana kukuya simbi yakakwana.
Kana pashandiswa welding yekuzadza, nzira yewelding yemvura inofanira kushandiswa uye simbi inobuda yeweld inofanira kubviswa kuti nzvimbo yacho irambe yakatsetseka.
Zvikanganiso pamusoro, zvakaita sezviratidzo zvekubata, zviratidzo zvidiki zvemakuvhuvhu kana zvekumonera, kana makomba asina kudzika, hazvionekwe sezvisina kunaka chero bedzi zvichigona kubviswa mukati meukobvu hwemadziro hwakatarwa.
Mashoko anotevera anofanira kuverengerwa:
Zita remugadziri: Iri rinogona kuva zita rakazara remugadziri kana kuti chidimbu.
Chiratidzo kana Chiratidzo: Zita rechiratidzo kana chiratidzo chekutengeserana chinoshandiswa nemugadziri kusiyanisa zvigadzirwa zvake.
Mugadziri weZvinhuASTM A500, iyo isingafaniri kusanganisira gore rekuburitswa.
Tsamba yeGiredhi: Giredhi B, C kana D.
Kune machubhu ekuvaka ane dhayamita ≤ 100mm (4in), mavara anogona kushandiswa kuratidza ruzivo rwekuzivikanwa zvakajeka.
Inonyanya kushandiswa pakuvaka, inopa simba remakanika rinodiwa uye kugona kusundira kuti itsigire dhizaini nekuvakwa kwezvivakwa zvekuvaka neinjiniya.
Pombi iyi yesimbi inoshandiswa zvakanyanya mukuvaka mafuremu, mabhiriji, zvivakwa zvemaindasitiri, nezvimwe zvinhu zvakasiyana-siyana zvechivako zvinoda simba uye kugara kwenguva refu.
ASTM A370: Nzira dzeKuyedza uye Tsananguro dzeKuyedza kweMichina yeZvigadzirwa zveSimbi.
ASTM A700: Gwaro reKurongedza, Kumaka, uye Nzira dzeKurodha Zvigadzirwa zveSimbi zveKutumira.
ASTM A751: Nzira dzeKuyedza uye Maitiro eKuongorora Makemikoro eZvigadzirwa zveSimbi.
ASTM A941 Mashoko Ane Chekuita Nesimbi, Simbi Isina Chinotenderera, MaAlloys Ane Chekuita, uye Ferroalloys.
Zvichienderana nezvinodiwa nevatengi, kurapwa kwepombi dzesimbi kunodzivirira ngura kunogona kuitwa nenzira dzakasiyana-siyana kuti dziwedzere kuramba kwayo ngura uye kuwedzera hupenyu hwayo hwekushanda.
Kusanganisira varnish, pendi, galvanization, 3PE, FBE, nedzimwe nzira.
Isu tiri vagadziri vemapaipi esimbi ecarbon emhando yepamusoro uye vatengesi vanobva kuChina, uye tiri vagadziri vemapaipi esimbi asina musono, tichikupai mhinduro dzakasiyana-siyana dzemapaipi esimbi!
Kana uchida kuziva rumwe ruzivo nezve zvigadzirwa zvemapaipi esimbi, unogona kutibata!
