Kukho iindlela ezintathu eziphambili zokuchonga imibhobho edityanisiweyo kunye nemibhobho engenamthungo (smls):

1. Indlela ye-Metallographic

Indlela ye-Metallographic yenye yeendlela eziphambili zokwahlula imibhobho edityanisiweyo kunye nemibhobho engenamthungo. I-high-frequency resistant welded pipe (ERW) ayifaki izinto zokudibanisa, ngoko ke i-weld seam kwipayipi yentsimbi edibeneyo iyancipha kakhulu, kwaye i-weld seam ayinakubonwa ngokucacileyo ukuba indlela yokugaya kunye ne-corrosion isetyenziswa. Emva kokuba i-high-frequency resistance welded welded steel pipe idityaniswe ngaphandle konyango lobushushu, ulwakhiwo lwe-weld seam luya kwahluka ngokubalulekileyo kwizinto zomzali wombhobho wentsimbi. Ngeli xesha, indlela ye-metallographic ingasetyenziselwa ukwahlula umbhobho wensimbi odibeneyo kumbhobho wensimbi ongenamthungo. Kwinkqubo yokuchonga imibhobho emibini yensimbi, kuyimfuneko ukusika isampuli encinci kunye nobude kunye nobubanzi be-40 mm kwindawo yokuthunga, ukuqhuba ukugaya, ukugaya okulungileyo kunye nokupholisa kuyo, kwaye emva koko ujonge isakhiwo phantsi kwe-metallographic. ngemakroskopu. Imibhobho yentsimbi edityanisiweyo kunye nemibhobho yentsimbi engenamthungo inokuhlukaniswa ngokuchanekileyo xa i-ferrite kunye ne-widmansite, isiseko sesinyithi kunye ne-weld zone microstructures zibonwa.

2. Indlela yokubola

Kwinkqubo yokusebenzisa indlela ye-corrosion ukuchonga imibhobho edibeneyo kunye nemibhobho engenamthungo, umthungo odibeneyo wombhobho wensimbi odibeneyo kufuneka upholiswe. Emva kokuba ukugaya kugqityiwe, iimpawu zokugaya kufuneka zibonakale, kwaye emva koko ubuso bokugqibela be-welded seam kufuneka bucocwe nge-sandpaper. Kwaye sebenzisa isisombululo se-5% se-nitric acid alcohol ukunyanga ubuso bokuphela. Ukuba kukho i-weld ecacileyo, inokungqina ukuba umbhobho wensimbi ngumbhobho wensimbi odibeneyo. Nangona kunjalo, ubuso bokugqibela bombhobho wensimbi ongenamthungo awunamahluko ocacileyo emva kokugqwala.

Iipropati zombhobho odityanisiweyo
Umbhobho wensimbi odibeneyo unezi mpawu zilandelayo ngenxa ye-welding high-frequency welding, i-cold rolling kunye nezinye iinkqubo.
Okokuqala, umsebenzi wokulondoloza ubushushu ulungile. Ukulahleka kobushushu bemibhobho yentsimbi edibeneyo kuncinci, kuphela i-25%, engenzi nje ukuthutha, kodwa kunciphisa iindleko.
Okwesibini, ayinamanzi kunye nokumelana nokubola. Kwinkqubo yokwakhiwa kobunjineli, akuyimfuneko ukuseka imisele yombhobho ngokwahlukileyo.
Inokungcwatywa ngokuthe ngqo emhlabeni okanye ngaphantsi kwamanzi, ngaloo ndlela inciphisa ubunzima bokwakhiwa kweprojekthi.
Okwesithathu, inokumelana nempembelelo. Nangona kwindawo yokushisa ephantsi, umbhobho wensimbi awuyi konakaliswa, ngoko ukusebenza kwayo kuneenzuzo ezithile.

Iipropati zombhobho ongenamthungo
Ngenxa yamandla aphezulu obunzima bezinto zetsimbi zombhobho wensimbi ongenamthungo, ukukwazi ukuxhathisa umonakalo unamandla, kwaye unomjelo ongenanto, ngoko unokuthutha ngokufanelekileyo ulwelo. Umbhobho wensimbi, kwaye ukuqina kwawo kukhulu. Ngoko ke, umthwalo omninzi umbhobho wensimbi ongenamthungo unokuthwala, unokusetyenziswa ngokubanzi kwiiprojekthi ezineemfuno eziphezulu zokwakha.

3. Ukwahlula ngokwenkqubo

Kwinkqubo yokuchonga imibhobho edibeneyo kunye nemibhobho engenamthungo ngokwenkqubo, imibhobho yentsimbi edibeneyo idityaniswe ngokuhambelana nokubanda, ukukhupha kunye nezinye iinkqubo. Xa umbhobho wentsimbi udityanisiwe, uya kwenza umbhobho odityanisiweyo ojikelezileyo kunye nomthungo othe tye odityanisiweyo, kwaye uya kwenza umbhobho wentsimbi ongqukuva, umbhobho wentsimbi osisikwere, umbhobho wentsimbi ombhoxo, umbhobho wentsimbi ongunxantathu, umbhobho wentsimbi onehexagonal, a umbhobho wentsimbi yerhombus, umbhobho wentsimbi octagonal, kunye nombhobho wentsimbi onzima ngakumbi.

Ngamafutshane, iinkqubo ezahlukeneyo ziya kwenza imibhobho yentsimbi yeemilo ezahlukeneyo, ukwenzela ukuba imibhobho yentsimbi edityanisiweyo kunye nemibhobho yensimbi engenamthungo ikwazi ukwahlula ngokucacileyo. Nangona kunjalo, kwinkqubo yokuchonga imibhobho yentsimbi engenamthungo ngokwenkqubo, isekelwe ikakhulu kwiindlela zonyango ezishushu kunye nezibandayo. Kukho ubukhulu becala iindidi ezimbini zemibhobho yentsimbi engenamthungo, eyahlulwe yaba yimibhobho yentsimbi engenamthungo eqengqelekayo kunye nentsimbi ebandayo eqengqelekayo. Imibhobho yentsimbi engenamthungo eshushu eqengqelekayo yenziwa ngokugqobhoza, ukuqengqeleka kunye nezinye iinkqubo, ngakumbi imibhobho yentsimbi enobubanzi obukhulu kunye nengqindilili engenamthungo idityaniswa yile nkqubo; imibhobho epholileyo epholileyo yenziwa yi-cold-drawing tube blanks, kwaye amandla ezinto eziphathekayo aphantsi, kodwa indawo yayo yangaphandle kunye neyolawulo lwangaphakathi ilula.

4. Hlela ngokusetyenziswa

Imibhobho yentsimbi edityanisiweyo inokugoba okuphezulu kunye namandla ajikelezayo kunye nomthamo wokuthwala umthwalo, ngoko ke isetyenziswa ngokubanzi xa kusenziwa iinxalenye zoomatshini. Ngokomzekelo, imibhobho yokomba ioli, iishafti zokuqhuba iimoto, iifreyimu zebhayisekile, nezikafula zentsimbi ezisetyenziswa ekwakhiweni kwezakhiwo zonke zenziwe ngemibhobho yentsimbi edityanisiweyo. Noko ke, imibhobho yentsimbi engenamthungo isenokusetyenziswa njengemibhobho yokuhambisa ulwelo ngenxa yokuba inamacandelo aholoholo nemicu emide yentsimbi engenamithungo ejikelezileyo. Umzekelo, ingasetyenziswa njengombhobho wokuthutha ioyile, irhasi yendalo, igesi, amanzi, njl.njl. Ukongeza, amandla okugoba ombhobho wentsimbi engenamthungo mancinci ngokwentelekiso, ngoko ke usetyenziswa ngokubanzi kwimibhobho yomphunga eshushu kakhulu ephantsi kunye. iibhoyila zoxinzelelo oluphakathi, imibhobho yamanzi abilayo kunye nemibhobho yomphunga eshushu kakhulu kwiibhoyila zikaloliwe. Ngamafutshane, ngokuhlelwa kokusetyenziswa, sinokuhlula ngokucacileyo imibhobho yentsimbi edibeneyo kunye nemibhobho yensimbi engenamthungo.