Bisingeniso esimnandi
Umbhobho wentsimbi luhlobo lombhobho wentsimbi.Ngokomgangatho, ibakala le-spheroidization yombhobho wentsimbi kufuneka ilawulwe ukuya kumabakala angama-1-3 (izinga le-spheroidization> 80%), ngoko ke iipropathi zomatshini zento ngokwayo ziye zaphuculwa ngcono, kunye nobume bentsimbi kunye iimpawu zentsimbi.Isakhiwo se-metallographic sombhobho wentsimbi we-annealed ductile yi-ferrite kunye nexabiso elincinci le-pearlite.Ineempawu ezintle zoomatshini, ukumelana nokugqwesa okugqwesileyo, i-ductility elungileyo, isiphumo esihle sokutywinwa, ukufakwa lula, kwaye isetyenziselwa ukubonelela ngamanzi, ukuhanjiswa kwegesi, ukuhanjiswa kwe-oyile, njl njl kumashishini kamasipala, amashishini kunye nemigodi.
Umlinganiselo othile wegrafu engqukuva usasazwa kwi-ferrite kunye ne-pearlite matrix.Ngokwahlukileyo kobubanzi obuqhelekileyo kunye neemfuno zokwandisa, umlinganiselo we-ferrite kunye ne-pearlite kwisakhiwo se-matrix sahlukile.Umlinganiselo wepearlite enedayamitha encinci ayibikho ngaphezulu kwe-20%, kwaye idiameter enkulu ilawulwa ngokubanzi malunga ne-25%.
Pukusebenza kwe dumbhobho wentsimbi
Umbhobho wentsimbi luhlobo lwentsimbi etyhidiweyo, eyialloyi yentsimbi, ikhabhoni kunye nesilicon.I-graphite ekwi-spheroidal graphite cast iron ikhona ngohlobo lwe-spheroidal graphite.Ngokuqhelekileyo, ubukhulu be-graphite ngu-6-7, kwaye ibakala le-spheroidization lombhobho ophosiweyo kufuneka ulawulwe kwi-1-3 (izinga le-spheroidization ≥ 80%) ngokubhekiselele kwikhwalithi.Ngoko ke, iipropathi zoomatshini zezinto ngokwazo ziphuculwe ngcono, kunye nobunjani bentsimbi kunye neempawu zetsimbi.Isakhiwo se-metallographic sombhobho we-annealed ductile iron yi-ferrite kunye nexabiso elincinci le-pearlite, kunye neempawu zayo zomatshini zilungile.
Umbhobho wentsimbi ubizwa ngokuba yi-centrifugal ductile iron pipe.Inobume bentsimbi, ukusebenza kwentsimbi, ukumelana nokugqwesa okugqwesileyo, i-ductility elungileyo, isiphumo esihle sokutywinwa, ukufakwa lula, kwaye isetyenziselwa ukubonelela ngamanzi, ukuhanjiswa kwegesi, ukuhanjiswa kweoli, njl. kumasipala, amashishini kunye nemigodi.Lukhetho lokuqala lwemibhobho yokubonelela ngamanzi kunye nokusebenza kweendleko eziphezulu.Xa kuthelekiswa nombhobho we-PE, ixesha lofakelo lombhobho we-iron ductile lulula kwaye lukhawuleza kunombhobho we-PE, kwaye uxinzelelo lwangaphakathi nangaphandle lungcono emva kokufakwa;Ukususela kumbono wokungabikho komoya kunye nokuchasana nokugqwala, ukungabikho komoya kombhobho we-spheroidal graphite emva kokufakwa kubhetele, kunye nokuxhatshazwa kwe-corrosion kunokuphuculwa ngeendlela ezahlukeneyo zokulwa ne-corrosion;Ukusuka kwindawo yokujonga ukusebenza kwe-hydraulic, kuba ukucaciswa kombhobho we-iron ductile ngokubanzi kubhekiselele kwidayamitha yangaphakathi, ukucaciswa kombhobho we-PE ngokubanzi kubhekiselele kwidayamitha yangaphandle, kuba phantsi kweemeko ezichaziweyo ezifanayo, umbhobho wesinyithi we-ductile unokufikelela kwi-runoff enkulu;Ukususela kumbono weendleko ezibanzi zokufakela kunye nokugcinwa, umbhobho wensimbi we-ductile unomsebenzi ongcono weendleko.Udonga lwangaphakathi lufafazwe nge-zinc, i-cement mortar anti-corrosion materials, njl.
Mimpahla yemishini kwe dumbhobho wentsimbi
Ubuncinci bokuqina kwamandla: 420/MPa
Ubuncinci amandla esivuno: 300/MPa, ubude obuncinane 7%
Imigangatho: GB/T13295-2013, ISO2531-2009
Ububanzi: DN80-DN2600
Iingcebiso zokukhetha kwe dumbhobho wentsimbi
1. Ukukhethwa kwemibhobho yensimbi ye-ductile kuya kusekelwe kwiimeko ezithile zendawo yokubeka, kwaye ifom ye-interface yemibhobho echanekileyo kunye nezixhobo ziya kukhethwa.
2. Iringi yerabha ngokuqhelekileyo yenziwe nge-NBR, SBR, EPDM kunye nezinye izinto.
3. Ukukhethwa kwengubo: khetha iingubo ezifanelekileyo ngokwemiqathango yangaphakathi nangaphandle ngexesha lokusetyenziswa.Ingqungquthela yangaphakathi ekhoyo i-epoxy resin, i-polyurethane yangaphakathi nangaphandle, i-PE yefilimu kunye nezinye iimveliso ezintsha zombhobho we-iron ductile, kunye nokusebenza kwayo kufuneka kuqondwe ngokubanzi xa ukhetha.
Izinto eziluncedo nezingeloncedo kwe dumbhobho wentsimbi
Ainzuzo
Imibhobho yentsimbi erhuqwayo isetyenziswa kuthungelwano lwemibhobho yoxinzelelo oluphakathi noluphantsi (isetyenziswa ngokubanzi ngaphantsi kwe-6MPa).Imibhobho ye-iron ye-Ductile inomsebenzi okhuselekileyo nothembekileyo, izinga lomonakalo ophantsi, ukwakhiwa kunye nokugcinwa ngokukhawuleza kunye nokugcinwa, kunye nokumelana nokugqwesa okugqwesileyo.Umbhobho omtsha ophuhliswayo othi "Yandun" ungasetyenziswa kulwakhiwo olungenamijelo kwaye usetyenziswe ngokubanzi kulwakhiwo lwemibhobho enqumla imilambo, iindlela kunye nezakhiwo.Umbhobho wochungechunge lwe-"Saizin" usebenzisa inkqubo ekhethekileyo ye-zinc aluminium alloy yangaphandle yokutshiza ukuze kuphuculwe ukuxhathisa kwe-corrosion yombhobho amaxesha amaninzi, kwaye isetyenziswa ngokubanzi ekwakhiweni komhlaba ogqwesileyo kakhulu.
Dinzuzo
Ngokuqhelekileyo, ayisetyenziswanga kwinethiwekhi yombhobho woxinzelelo oluphezulu (ngaphezulu kwe-6MPa).Ngenxa yokuba umzimba wombhobho unzima kakhulu, kufuneka kusetyenziswe oomatshini ngexesha lofakelo.Kwimeko yokuvuza kwamanzi emva kovavanyo loxinzelelo, yonke imibhobho kufuneka igrunjwe, imibhobho kufuneka iphakanyiswe kwindawo ephakamileyo apho inokufakwa khona kwi-clamps, kwaye i-clamps iya kufakwa ukuthintela ukuvuza kwamanzi.
Thina JINBAICHENG isomnye womvelisi owaziwayo, umrhwebi, umthengisi wempahla, umnini wempahla kunye nomthengisi weumbhobho wentsimbi.Sinomthengi ovela eMexico, eTurkey, ePakistan, Oman, Israel, Egypt, Arab, Vietnam, Myanmar, isiJamani, njl.
Iwebhusayithi:www.sdjbcmetal.com
Email: jinbaichengmetal@gmail.com
Ixesha lokuposa: Apr-04-2023