Mapaipi eSimbi yeKabhoni Yakasungirirwa Yepasi pevhu - EN10219
Chimwe chezvakanakira zvikuru zvesimbi yesimbi yakasungirirwa nesimbi yekabhonikugona kugadzira mapaipi ane dhayamita dzakasiyana uchishandisa zvidimbu zvehupamhi hwakaenzana. Izvi zvinobatsira zvikuru kumashandisirwo anoda zvidimbu zvitete zvesimbi kuti agadzire mapaipi esimbi ane dhayamita hombe. Maitiro aya ekugadzira matsva anovimbisa kuti mapaipi anogadzirwa haangogari kwenguva refu chete, asiwo ane hunhu hwakafanana.
Mapaipi esimbi yekabhoni akasungirirwa nesimbi dzakasungirirwa akagadzirirwa kuiswa mapaipi egasi rechisikigo pasi pevhu uye anoenderana nezvinodiwa zvakasimba zveEN10219. Mutemo uyu unotsanangura zvinodiwa zvehunyanzvi zvezvikamu zvesimbi dzisina alloy nesimbi dzakapfava dzakagadzirwa nesimbi dzakatetepa. Saka pombi iyi yakakodzera kushandiswa mumapaipi egasi rechisikigo epasi pevhu uko kuramba ngura uye kusimba kwechimiro kwakakosha.
Zvivakwa zveMechanical
| giredhi resimbi | simba shoma regoho Mpa | Simba rekusimba | Kureba kushoma % | Simba shoma remagetsi J | ||||
| Ukobvu hwakatarwa mm | Ukobvu hwakatarwa mm | Ukobvu hwakatarwa mm | patembiricha yekuyedzwa kwe | |||||
| 16 | >16≤40 | 3 | ≥3≤40 | ≤40 | -20℃ | 0℃ | 20℃ | |
| S235JRH | 235 | 225 | 360-510 | 360-510 | 24 | - | - | 27 |
| S275J0H | 275 | 265 | 430-580 | 410-560 | 20 | - | 27 | - |
| S275J2H | 27 | - | - | |||||
| S355J0H | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - |
| S355J2H | 27 | - | - | |||||
| S355K2H | 40 | - | - | |||||
Kuumbwa kweMakemikari
| Giredhi resimbi | Rudzi rwekubvisa oxidation a | % nehuremu, huwandu hwepamusoro | ||||||
| Zita resimbi | Nhamba yesimbi | C | C | Si | Mn | P | S | Nb |
| S235JRH | 1.0039 | FF | 0,17 | — | 1,40 | 0,040 | 0,040 | 0.009 |
| S275J0H | 1.0149 | FF | 0,20 | — | 1,50 | 0,035 | 0,035 | 0,009 |
| S275J2H | 1.0138 | FF | 0,20 | — | 1,50 | 0,030 | 0,030 | — |
| S355J0H | 1.0547 | FF | 0,22 | 0,55 | 1,60 | 0,035 | 0,035 | 0,009 |
| S355J2H | 1.0576 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | — |
| S355K2H | 1.0512 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | — |
| a. Nzira yekubvisa oxidation inotsanangurwa seinotevera: FF: Simbi yakafa zvizere ine zvinhu zvinosunga nitrogen muhuwandu hwakakwana kuti isunge nitrogen iripo (semuenzaniso 0,020% yeAl yose kana 0,015% yeAl inonyungudika). b. Kukosha kwakanyanya kwenitrogen hakushandi kana makemikari ari muchikamu ichi achiratidza huwandu hweAl hushoma hwe0,020% nechiyero cheAl/N che2:1, kana kana paine zvimwe zvinhu zveN-binding zvakakwana. Zvinhu zveN-binding zvinofanira kunyorwa muGwaro reKuongorora. | ||||||||
Pamusoro pekushanda kwayo kwakasiyana-siyana mukugadzira mapaipi esimbi ane dhayamita hombe, mapaipi esimbi ane spiral welded carbon ane zvimwe zvakanakira zvakawanda. Tekinoroji yayo ye spiral welding inoita kuti paipi ive nepamusoro pakanaka, ichideredza kudonha kwedzvinyiriro uye ichivandudza hunhu hwekuyerera kwemvura. Izvi zvakakosha zvikuru mukushandiswa kwemapaipi egasi rechisikigo, uko kuyerera kwakanaka uye kusina kukanganiswa kwakakosha kuti pave nekushanda kwakanaka.
Pamusoro pezvo, pombi yesimbi yekabhoni yakasungirirwa inochinjika zvakasimba inodzivirira ngura, zvichiita kuti ive yakakodzera kuiswa pasi pevhu uko kusvibiswa nehunyoro nevhu zvinogona kukanganisa kunaka kwepombi. Kuvakwa kwayo kwakasimba uye zvinhu zvinogara kwenguva refu zvinoita kuti ive yakakodzera kushandiswa kwenguva refu mumamiriro ezvinhu akaoma.
Kushandiswa kwesimbi yekabhoni yepamusoro kunoita kuti mapaipi ave nehunyanzvi hwakanaka hwemakanika, kusanganisira kusimba kwakanyanya kwekudhonza uye kuramba kubatwa. Izvi zvinoita kuti ive sarudzo yakavimbika kunepombi yegesi yechisikigo pasi pevhukuiswa, sezvo mapaipi anogona kunge aine mitoro yekunze uye kukuvara kunogona kuitika.
Muchidimbu, mapaipi esimbi esimbi yekabhoni akasungirirwa nesimbi inotenderera ndiyo sarudzo yakanakisisa yekushandisa mapaipi epasi pevhu egasi rechisikigo. Maitiro ayo matsva ekugadzira anobvumira kugadzirwa kwemapaipi esimbi ane dhayamita yakakura kubva pazvidimbu zvitete zvesimbi, zvichiita kuti hunhu hwayo huenderane uye hugare kwenguva refu. Paipi iyi inosangana nezvinodiwa neEN10219 standard uye ine simba rekudzivirira ngura, nzvimbo yemukati yakatsetseka uye hunhu hwakasimba hwemakanika, zvichiita kuti ive yakakodzera kushandiswa kwenguva refu kwakavimbika mumapaipi epasi pevhu egasi rechisikigo.







