Phakathi kweiivalve ezithwele uxinzelelo of imibhobho yemizi-mveliso, iivalve zentsimbizisetyenziswa ngokubanzi ngenxa yoqoqosho lweendleko kunye nokuguquguquka koyilo.Nangona kunjalo, ngenxa yokuba inkqubo yokuphosa ithintelwe ngobungakanani, ubukhulu bodonga, imozulu, izinto eziluhlaza kunye nemisebenzi yokwakha, iziphene ezahlukeneyo zokuphosa ezifana ne-blister, pores, cracks, shrinkage porosity, i-shrinkage cavities kunye nokufakwa kuya kuvela kwii-castings. ingakumbi ialloyi zokugalela isanti.Ukusaswa kwentsimbi kokungaphezulu.Ngenxa yokuba izinto ezidibanisa ngakumbi kwintsimbi, kokukhona ukuhlwempuzeka kwentsimbi etyhidiweyo, kunokwenzeka ukuba kuvelise iziphene zokuphosa.Ngoko ke, ukuchongwa kweziphene kunye nokuqulunqwa kwenkqubo ye-welding efanelekileyo, eyongayo, esebenzayo kunye nethembekileyo yokuqinisekisa ukuba i-valve emva kokulungiswa kwe-welding ihlangabezana neemfuno zomgangatho iye yaba yinkxalabo eqhelekileyo kwi-processing eshushu nebanda.iivalve.Eli nqaku lizisa indlela yokulungisa i-welding kunye namava eempazamo ezininzi eziqhelekileyo zokuphosa intsimbi (intonga ye-welding imelwe yi-brand endala).
Ukuphatha isiphene
1. Isiphene sokugweba
Kwimveliso yokuvelisa, ezinye iziphene zokuphosa azivumelekanga ukulungisa i-welding, ezifana neentanda zokungena, iziphene zokungena (ukungena ngaphantsi), i-honeycomb pores, inclusions yesanti engenakususwa, kunye ne-shrinkage porosity kunye nommandla ongaphezu kwe-65 square centimeters, njl. kunye Nezinye iziphene ezinkulu ezingenako ukulungiswa njengoko kuvunyelwene kwikhontrakthi phakathi kwamaqela amabini.Uhlobo lwesiphene kufuneka lugwetywe ngaphambi kokulungisa i-welding.
2. Ukususwa kwesiphene
Kumzi-mveliso, i-carbon arc air gouging idla ngokusetyenziselwa ukuvuthela iziphene, kwaye emva koko i-angle grinder ephathekayo isetyenziselwa ukupolisha iindawo ezineziphene ukuveza ukukhazimla kwesinyithi.Kodwa ekusebenzeni kwemveliso, kuninzi ukusebenzisa i-carbon steel electrode ene-high current ukususa iziphene, kunye nokusebenzisa i-angle grinder ukugaya i-metallic luster.Ngokuqhelekileyo, ukuphosa iziphene kunokupheliswa ngokusebenzisa i-<4mm-J422 electrode kunye ne-current ye-160-180A ukususa iziphene.I-angle grinder igaya isiphene kwimilo engu-U ukunciphisa uxinzelelo lwe-welding.Iziphene zisuswe ngokupheleleyo, kwaye ukulungiswa kwe-welding quality kulungile.
3. Ukufudumeza kwamalungu anesiphene
Kwintsimbi ye-carbon steel kunye ne-austenitic stainless steel castings, apho indawo yokulungiswa kwe-welding ingaphantsi kwe-65cm2 kwaye ubunzulu bungaphantsi kwe-20% okanye i-25mm yobunzima bokuphosa, ukushisa kwangaphambili akufuneki ngokubanzi.Nangona kunjalo, kwii-pearlitic steel castings ezifana ne-ZG15Cr1Mo1V kunye ne-ZGCr5Mo, ngenxa yokuthambekela okuphezulu kokuqina kwentsimbi kunye nokuqhekeka ngokulula kwi-welding ebandayo, ukufudumala kufuneka kwenziwe.Ixesha lokubamba kufuneka libe ubuncinane be-60min.Ukuba ukuphosa akukwazi ukufudumeza ngokupheleleyo, kunokufudumeza ukuya kwi-300-350 ° C kunye ne-oxygen-acetylene kwindawo yesiphako kwaye kwandiswe nge-20mm (ukuqwalaselwa kobumnyama obomvu kwindawo emnyama), kunye ne-torch enkulu engathathi hlangothi. umpu usetyenziswa kuqala kwisiphene nakwiindawo ezingqongileyo.Swayipha isangqa ngokukhawuleza imizuzu embalwa, uze uhambe ngokukhawuleza imizuzu eyi-10 (kuxhomekeke kubukhulu besiphene), ukwenzela ukuba i-defect igqitywe ngokupheleleyo kwaye ilungiswe ngokukhawuleza.
Ukuze ufumane iinkcukacha ezithe vetshe, nceda undwendwelewww.cvgvalves.com.Qhagamshelanasales@cvgvalves.com.