Mabhenefiti emapaipi esimbi eA252 Grade 3 anoshandiswa mukuvaka mapaipi etsvina nepeturu
Chimwe chezvakanakira zvikuru zvePombi yesimbi yeA252 Giredhi 3 isimba rayo rakasiyana uye kugara kwenguva refu. Mapaipi aya akagadzirwa nesimbi yepamusoro-soro uye haakuvadzi ngura, kupera kana kukanganiswa. Izvi zvinoita kuti akwanise kushandiswa mumapaipi etsvina uko anogona kusangana nezvinhu zvinoparadza uye zvinhu zvinorema. Pamusoro pezvo, simba rawo uye kugara kwenguva refu zvinoita kuti akwanise kushandiswa mukuvaka mapaipi emafuta, sezvo achifanira kutsungirira kumanikidzwa kwakanyanya uye kuchinja kwemamiriro ekunze.
| Zvakajairika | Giredhi reSimbi | Zvikamu zveMakemikari (%) | Nzvimbo Inosungirira | Charpy(V notch) Kuedzwa kweMhedzisiro | ||||||||||
| c | Mn | p | s | Si | Zvimwe | Simba reGoho(Mpa) | Simba reKusimba(Mpa) | (L0=5.65 √ S0)Kutambanudzwa kweminiti (%) | ||||||
| zvakanyanya | zvakanyanya | zvakanyanya | zvakanyanya | zvakanyanya | miniti | zvakanyanya | miniti | zvakanyanya | D ≤ 168.33mm | D > 168.3mm | ||||
|
GB/T3091 -2008 | Q215A | ≤ 0.15 | 0.25 < 1.20 | 0.045 | 0.050 | 0.35 | Kuwedzera NbVTi zvichienderana neGB/T1591-94 | 215 | 335 | 15 | > 31 | |||
| Q215B | ≤ 0.15 | 0.25-0.55 | 0.045 | 0.045 | 0.035 | 215 | 335 | 15 | > 31 | |||||
| Q235A | ≤ 0.22 | 0.30 < 0.65 | 0.045 | 0.050 | 0.035 | 235 | 375 | 15 | >26 | |||||
| Q235B | ≤ 0.20 | 0.30 ≤ 1.80 | 0.045 | 0.045 | 0.035 | 235 | 375 | 15 | >26 | |||||
| Q295A | 0.16 | 0.80-1.50 | 0.045 | 0.045 | 0.55 | 295 | 390 | 13 | >23 | |||||
| Q295B | 0.16 | 0.80-1.50 | 0.045 | 0.040 | 0.55 | 295 | 390 | 13 | >23 | |||||
| Q345A | 0.20 | 1.00-1.60 | 0.045 | 0.045 | 0.55 | 345 | 510 | 13 | >21 | |||||
| Q345B | 0.20 | 1.00-1.60 | 0.045 | 0.040 | 0.55 | 345 | 510 | 13 | >21 | |||||
|
GB/ T9711- 2011 (PSL1) | L175 | 0.21 | 0.60 | 0.030 | 0.030 |
Sarudzo yekuwedzera chimwe chezvinhu zveNbVTi kana chero musanganiswa wazvo | 175 | 310 | 27 | Imwe kana mbiri dzechiratidzo chekusimba kwesimba simba rekukanganisa uye nzvimbo yekuchekerera zvinogona kusarudzwa. L555, ona chiyero. | ||||
| L210 | 0.22 | 0.90 | 0.030 | 0.030 | 210 | 335 | 25 | |||||||
| L245 | 0.26 | 1.20 | 0.030 | 0.030 | 245 | 415 | 21 | |||||||
| L290 | 0.26 | 1.30 | 0.030 | 0.030 | 290 | 415 | 21 | |||||||
| L320 | 0.26 | 1.40 | 0.030 | 0.030 | 320 | 435 | 20 | |||||||
| L360 | 0.26 | 1.40 | 0.030 | 0.030 | 360 | 460 | 19 | |||||||
| L390 | 0.26 | 1.40 | 0.030 | 0.030 | 390 | 390 | 18 | |||||||
| L415 | 0.26 | 1.40 | 0.030 | 0.030 | 415 | 520 | 17 | |||||||
| L450 | 0.26 | 1.45 | 0.030 | 0.030 | 450 | 535 | 17 | |||||||
| L485 | 0.26 | 1.65 | 0.030 | 0.030 | 485 | 570 | 16 | |||||||
|
API 5L (PSL 1) | A25 | 0.21 | 0.60 | 0.030 | 0.030 | Yesimbi yegiredhi B, Nb+V ≤ 0.03%; yesimbi ≥ giredhi B, zvingasarudzwa kuwedzera Nb kana V kana yavo musanganiswa, uye Nb+V+Ti ≤ 0.15% | 172 | 310 | (L0 = 50.8mm) kuva yakaverengerwa zvichienderana nefomula inotevera: e=1944·A0 .2/U0 .0 A: Nzvimbo yemuenzaniso mu mm2 U: Simba shoma rekudhonza rakatarwa mu Mpa | Hapana kana chimwe kana zvese zviri zviviri kukanganisa simba uye kuveura nzvimbo yacho inodiwa senzira yekusimba kwayo. | ||||
| A | 0.22 | 0.90 | 0.030 | 0.030 | 207 | 331 | ||||||||
| B | 0.26 | 1.20 | 0.030 | 0.030 | 241 | 414 | ||||||||
| X42 | 0.26 | 1.30 | 0.030 | 0.030 | 290 | 414 | ||||||||
| X46 | 0.26 | 1.40 | 0.030 | 0.030 | 317 | 434 | ||||||||
| X52 | 0.26 | 1.40 | 0.030 | 0.030 | 359 | 455 | ||||||||
| X56 | 0.26 | 1.40 | 0.030 | 0.030 | 386 | 490 | ||||||||
| X60 | 0.26 | 1.40 | 0.030 | 0.030 | 414 | 517 | ||||||||
| X65 | 0.26 | 1.45 | 0.030 | 0.030 | 448 | 531 | ||||||||
| X70 | 0.26 | 1.65 | 0.030 | 0.030 | 483 | 565 | ||||||||
Imwe mukana wepaipi yesimbi yeA252 Grade 3 ndeyekuti inogona kushandiswa zvakasiyana-siyana. Mapaipi aya anowanikwa muhukuru hwakasiyana-siyana uye ukobvu, zvichiita kuti akwanise kushandiswa zvakasiyana-siyana. Kunyangwe kuvaka kadikitambo yetsvinakana tambo huru yepombi yemafuta, pombi yesimbi yeA252 Grade 3 inogona kugadziriswa zviri nyore kuti ienderane nezvinodiwa zvepurojekiti. Pamusoro pezvo, mapaipi aya anogona kugadzirwamapaipi ekuvaka ane chikamu chisina chinhu, kuwedzera kushandiswa kwavo mumapurojekiti ekuvaka.
Pamusoro pekusimba kwayo uye kushanduka-shanduka, pombi yesimbi yeA252 Grade 3 inozivikanwawo nekushandisa kwayo mari shoma. Mapombi aya ari nyore kuisa uye anoda kugadziriswa kushoma, zvichideredza mari inoshandiswa pabasa. Pamusoro pezvo, hupenyu hwavo hwekushanda kwenguva refu uye kuramba ngura kunoita kuti vawane purofiti yakakura pamari inoshandiswa pakugadzira tsvina netsvina.pombi yemafuta mutsetsemapurojekiti ekuvaka.
Chimwe chinhu chakakosha chepombi yesimbi yeA252 Grade 3 ndechekuti inoenderana nenzira dzakasiyana-siyana dzekuvaka. Mapombi aya anogona kuiswa uchishandisa nzira dzechinyakare dzekuchera kana nzira dzisina mugero dzakadai sekuboorera zvakananga, kukanda mapaipi kana kupinza tumatune tune. Kuchinjika uku kunobvumira kuiswa kwakanaka uye kusingadhuri munzvimbo dzakasiyana-siyana dzakaoma, kusanganisira nzvimbo dzemaguta, nzira dzemvura nenzvimbo dzinonyanya kukanganiswa nezvakatipoteredza.
Pamwe chete, pombi dzesimbi dzeA252 Grade 3 dzinopa mabhenefiti akasiyana-siyana pakuvaka mapaipi etsvina nepeturu. Simba radzo, kugara kwenguva refu, kushanduka-shanduka uye kushanda zvakanaka kunoita kuti dzive dzakakodzera kushandiswa uku kunonetsa. Kunyangwe dzichishandiswa pakuvaka mapaipi etsvina kana emafuta, mapaipi aya anopa mashandiro akavimbika uye kukosha kwenguva refu. Nekuda kweizvozvo, anoramba ari mhinduro inosarudzwa nemainjiniya nevanoita mabasa ekugadzira mapaipi akasimba uye akavimbika.








