Kugadzira Mutsetse weMapaipi eOiri neArc Welding: Kuve nechokwadi chekuti basa rinoitwa uye kuti rakavimbika.
Dzidza nezveHSAW:
Kushongedza arc pasi pemvura inonyungudutswatekinoroji yepamusoro yekubatanidza simbi inosanganisa misimboti yekubatanidza simbi yakanyudzwa mumvura uye kugadzira machubhu esimbi. Inosanganisira kushandisa nzira yekubatanidza otomatiki kugadzira simbi inotenderera inotenderera nekuisa waya yakasimba yekuzadza musimbi inoputika. Nzira iyi inoita kuti simbi dzishande zvakanaka uye dzemhando yepamusoro, zvichibvisa njodzi yekukanganisa kwakajairika nedzimwe nzira dzekubatanidza simbi.
mafomu.
Zvivakwa zveMechanical
| giredhi resimbi | simba shoma regoho | Simba rekusimba | Kureba kushoma | Simba shoma remagetsi | ||||
| Ukobvu hwakatarwa | Ukobvu hwakatarwa | Ukobvu hwakatarwa | 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 | - | - | |||||
Kukosha kweHSAW mukuvaka mapaipi emafuta:
1. Simba uye Kugara Kwenguva refu: Chimwe chezvinhu zvikuru zveHSAW kugona kwayo kugadzira majoini akasimba uye ane simba guru. Kusungirirwa kwesimbi kunoenderera mberi kunoumbwa netekinoroji iyi kunosimbisa kusimba kwechimiro uye kwakakosha kuti ikwanise kutsungirira kumanikidzwa kwakanyanya, tembiricha yakanyanya uye zvinhu zvakatipoteredza zvinoita kuti ikwanise kumira.pombi yemafuta mitsetsechiso panguva yebasa ravo.
2. Kugara kwenguva refu uye kuvimbika kwakasimba: Mitsetse yemapaipi emafuta inotarisirwa kushanda zvakanaka kwemakumi emakore, ichitakura oiri pasina kubuda kana kukundikana. HSAW inoita basa rakakosha mukuita kuti igare kwenguva refu nekuona kuti kupisa kwewelding kwakaenzana, kuderedza kuwanda kwekushushikana, uye kudzivirira kutanga kwekuputika nekupararira kwepombi - zvese izvi zvinoita kuti pombi igare yakasimba.
3. Kuvaka nemazvo: HSAW inokwanisa kugara ichibatanidza zvikamu zvirefu zvemapaipi, saka ine kushanda kwakasimba mukuvaka mapaipi. Nzira iyi inoderedza nguva yekusanganisa, inowedzera kubereka, inoderedza zvakanyanya mari yekuvaka, uye inobatsira kuti chirongwa chipedzwe nenguva.
4. Kuderedzwa kwekugadzirisa nekugadzirisa: Nekupa ma weld emhando yepamusoro, asina kukanganisa, HSAW inoderedza kudiwa kwekugadzirisa mune ramangwana kana nguva yekushanda inokonzerwa nekugadzirisa. Mapaipi emafuta akavakwa achishandisa nzira iyi haawanzo kudonha kana kukundikana, zvichivandudza kuchengetedzeka uye zvinowedzera kushanda zvakanaka.
5. Mabhenefiti ezvakatipoteredza: HSAW inoita kuti pave nekuumbwa kwezvishandiso zvemawelds zvakanyatsonaka zvine hungwaru hwakanyanya. Izvi zvinoderedza mukana wekuora kwepaipi uye kubuda kwemafuta mushure mezvo, zvichidzivirira nharaunda kubva kunjodzi dzinogona kuitika dzine chekuita nekukundikana kwepaipi.
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. | ||||||||
Mukupedzisa:
Kuvakwa kwemapaipi emafuta kunoda mwero wepamusoro we welding kuti ive nechokwadi chekuti inogara kwenguva refu, yakavimbika uye yakachengeteka. Spiral submerged arc welding (HSAW) ndiyo tekinoroji yakasimbiswa inosarudzwa munharaunda iyi nekuda kwekukwanisa kwayo kugadzira welds dzakasimba, dzinogara kwenguva refu uye dzisina kukanganisa. Nezvakanakira zvakawanda zvinosanganisira kuvakwa kwakasimba, kuvaka kwakanaka, kuderedzwa kwekugadzirisa uye mabhenefiti ezvakatipoteredza, HSAW inoita basa guru mukusangana nezvinodiwa zvekutakura mafuta pasi rose. Sezvo indasitiri yemafuta ichiramba ichikura, kushandiswa kwetekinoroji yepamusoro ye welding senge HSAW kwakakosha kuchengetedza kuvimbika uye kuvimbika kwemapaipi emafuta pasi rese.
Muchidimbu
Cangzhou Spiral Steel Pipe Group Co., Ltd. inodada nekupa mapaipi emhando yepamusoro espiral seam kune akasiyana siyana mashandisirwo. Tinonyanya kutarisa pakugadzira nemazvo, tekinoroji yepamusoro yekuwelda uye zvinhu zvemhando yepamusoro kuti tipe vatengi mhinduro dzakavimbika uye dzinoshanda kune zvavanoda pakuisa mapaipi. Vimba nesu kuti tizadzise zvese zvaunoda uye tizvionere kuvimbika uye kusimba kwemapaipi edu espiral seam.







