Ngokwendlela yokuvelisa, iibhobho zetsimbi zinokuhlulwa zibe ngamacandelo amabini: iipayipi zentsimbi ezingenamthungo kunye nemibhobho yensimbi edibeneyo.Phakathi kwazo, imibhobho yentsimbi ye-ERW lolona hlobo luphambili lwemibhobho yentsimbi edityanisiweyo.Namhlanje, ikakhulu sithetha ngeendidi ezimbini zemibhobho yentsimbi esetyenziswa njengemathiriyeli ekrwada: imibhobho yecasing engenamthungo kunye ne-ERW casing pipe.
Umbhobho we-casing ongenamthungo - umbhobho we-casing owenziwe ngombhobho wensimbi ongenamthungo;Umbhobho wentsimbi ongenamthungo ubhekisa kumbhobho wentsimbi owenziwe ngeendlela ezine zokuqengqeleka okushushu, ukuqengqeleka okubandayo, umzobo oshushu kunye nomzobo obandayo.Umzimba wombhobho ngokwawo awunazo ii-welds.
Umzimba we-ERW – ERW (Electric Resistant Weld) umbhobho wentsimbi owenziwe ngombhobho odityanisiweyo wombane ubhekisa kumbhobho odityanisiweyo we-longitudinal owenziwe nge-welding ephezulu yokumelana nombane.Iishiti zetsimbi eziluhlaza (iikhoyili) zemibhobho edibeneyo yombane zenziwe ngentsimbi ephantsi-carbon micro-alloy egqitywe yi-TMCP (inkqubo elawulwa yi-thermomechanical).
1. Ukunyamezela kwe-OD umbhobho wensimbi ongenamthungo: usebenzisa inkqubo yokwenza i-hot-rolled, ukulinganisa kugqitywe malunga ne-8000 ° C.Ukubunjwa kwezinto eziluhlaza, iimeko zokupholisa, kunye nemeko yokupholisa umqulu unempembelelo enkulu kwi-diameter yayo yangaphandle, ngoko kunzima ukulawula ngokuchanekileyo ububanzi bangaphandle, kwaye uluhlu lokuguquguquka lukhulu.Ipayipi yensimbi ye-ERW: yenziwe ngokugoba okubandayo, kwaye ububanzi bayo buncitshiswe ngo-0.6%.Iqondo lokushisa lenkqubo lihlala lihlala lihlala kwiqondo lokushisa, ngoko ke ububanzi bangaphandle bulawulwa ngokuchanekileyo, kwaye uluhlu lokuguquguquka luncinci, olunceda ukupheliswa kweentsimbi zesikhumba ezimnyama;
2. Umbhobho wentsimbi ongenamthungo kunye nokunyamezela kobunzima bodonga: Iveliswa ngentsimbi ejikelezayo ye-perforating, kwaye ukutenxa kodonga kukhulu.Ukuqengqeleka okushushu okulandelayo kunokuphelisa ngokuyinxenye ukungalingani kobukhulu bodonga, kodwa abona matshini banamhlanje banokubulawula kuphela ngaphakathi kwe ± 5 ~ 10% t.Umbhobho wensimbi we-ERW: Xa usebenzisa i-coil eshushu eqengqelekayo njengento ekrwada, ukunyamezelana kobunzima bokuqengqeleka okushushu kwale mihla kunokulawulwa ngaphakathi kwe-0.05mm.
3. Iziphene kumphezulu wangaphandle we-workpiece esetyenziselwa ukubonakala kombhobho wensimbi ongenamthungo awukwazi ukupheliswa kwinkqubo yokutshiza eshushu, kodwa inokucocwa kuphela emva kokuba imveliso egqityiweyo igqityiwe, i-helical stroke eshiywe emva kokubethelwa ingagqitywa kuphela kwinkqubo yokunciphisa iindonga.Umbhobho wentsimbi we-ERW wenziwa ngekhoyili eshushu esongiweyo njengemathiriyeli ekrwada.Umgangatho womphezulu wekhoyili uyafana nomgangatho womphezulu wepayipi yensimbi ye-ERW.Umgangatho womphezulu we-coil rolling eshushu kulula ukuyilawula kwaye ikumgangatho ophezulu.Ngoko ke, umgangatho womphezulu we-ERW wentsimbi yombhobho ungcono kakhulu kunombhobho wentsimbi ongenamthungo.
4. Umbhobho wentsimbi ye-oval engenamthungo: usebenzisa inkqubo eshushu yokuqengqeleka.Ukubunjwa kwezinto eziluhlaza zombhobho wensimbi, iimeko zokupholisa kunye nemeko yokupholisa umqulu unempembelelo enkulu kububanzi bawo bangaphandle, ngoko kunzima ukulawula ngokuchanekileyo ububanzi bangaphandle, kwaye uluhlu lokuguquguquka lukhulu.Umbhobho wensimbi we-ERW: uveliswa ngokugoba okubandayo, i-diameter yangaphandle ilawulwa ngokuchanekileyo, kwaye uluhlu lokuguquguquka luncinci.
5. Uvavanyo lwe-Tensile Iipropati ze-tensile zombhobho wensimbi ongenamthungo kunye ne-ERW ipayipi yensimbi ihambelana nemigangatho ye-API, kodwa amandla ombhobho yensimbi engenamthungo ngokuqhelekileyo kumda ophezulu, kwaye i-ductility ingaphantsi komda.Ngokuchasene noko, isalathisi samandla se-ERW ipayipi yensimbi ikwimeko engcono kakhulu, kwaye isalathisi seplastiki yi-33.3% ephezulu kunomgangatho.Isizathu kukuba njengento ekrwada ye-ERW yensimbi yombhobho, ukusebenza kwekhoyili eshushu egobileyo iqinisekiswa yi-micro-alloy smelting, i-out-of-furnace refining, kunye nokulawulwa kokupholisa kunye nokuqengqeleka;iplastiki.Ukudibana okufanelekileyo.
6. Impahla ekrwada ye-ERW yensimbi yombhobho i-coil eshushu-eshushu, enokuchaneka okuphezulu kakhulu kwinkqubo yokuqengqeleka, enokuqinisekisa ukusebenza okufanayo kwenxalenye nganye yekhoyili.
7. Imathiriyeli ekrwada ye-ERW eshushu iqengqeleke umbhobho wekhoyili yentsimbi enobukhulu obuziinkozo ithatha i-billet ebanzi nengqindilili eqhubekayo yokuphosa, umaleko wokuqina womhlaba ocolekileyo, akukho ndawo yeekristale zekholomu, i-shrinkage porosity kunye neepores, ukutenxa kokwakheka kuncinci., kunye nesakhiwo sihlangene;ulawulo kwinkqubo yokuqengqeleka elandelayo Ukusetyenziswa kobuchwephesha bokuqengqeleka obubandayo buqinisekisa ubungakanani beenkozo zezinto ezikrwada.
8. Uvavanyo lokumelana ne-slip ye-ERW yensimbi yombhobho ihambelana neempawu zezinto ezibonakalayo kunye nenkqubo yokuvelisa umbhobho.Ukufana kodonga kunye ne-ovality ingcono kakhulu kunemibhobho yensimbi engenamthungo, esona sizathu sokuba ukuchasana kokuwa kuphezulu kunemibhobho yensimbi engenamthungo.
9. Uvavanyo lwempembelelo Ngenxa yokuba ukuqina kwesiseko sombhobho wensimbi we-ERW kuphindwe kaninzi kunombhobho wensimbi ongenamthungo, ukuqina kwe-weld ngundoqo kumbhobho wensimbi we-ERW.Ngokulawula umxholo wokungcola kwizinto eziluhlaza, ukuphakama kunye nesalathiso se-burr yokusika, imilo ye-edge yokwenza, i-angle ye-welding, isantya se-welding, amandla okufudumeza kunye nokuphindaphinda, umthamo we-welding extrusion, i-intermediate frequency retraction heat kunye nobunzulu, ubude becandelo lokupholisa umoya kunye nezinye iiparameters zenkqubo ziqinisekisiwe.Impembelelo ye-weld yamandla ifikelela ngaphezu kwe-60% yesiseko sesinyithi.Ngokuphucula ngakumbi, amandla empembelelo ye-weld angasondela kumandla esiseko sesinyithi, esiqinisekisa ukusebenza okungenangxaki.
10. Uvavanyo oluqhumayo Ukusebenza kovavanyo oluqhumayo lwemibhobho yensimbi ye-ERW iphezulu kakhulu kuneemfuno eziqhelekileyo, ngokukodwa ngenxa yokulingana okuphezulu kodonga kunye nobukhulu obufanayo bangaphandle beepayipi zensimbi ze-ERW.