Isishwankathelo seTekhnoloji ye-SAW Flux-cored Wire Hardfacing
Umgaqo Wokusebenza kunye neempawu zeNkqubo
2.1 Umgaqo Wokusebenza
Xa i-SAW hardfacing isebenzisa ucingo olune-flux-core, i-arc iyatsha phakathi kwesiphelo socingo kunye nomphezulu we-substrate. I-granular flux egubungela indawo ye-arc yahlula umoya kwidama elinyibilikisiweyo kwaye ikhusela isinyithi esinyibilikisiweyo kwi-oxidation kunye ne-nitriding. I-metal sheath ye-flux-core wire iyanyibilika phantsi kobushushu be-arc, ngelixa i-alloy powder engaphakathi kwe-core inyibilika kwidama elinyibilikisiweyo, ilungisa ukwakheka kweekhemikhali zomaleko womphezulu. Emva kokupholisa, i-slag eyenziwe yi-flux iyaqina kumphezulu we-weld, enokususwa ngokulula, ishiye umaleko womphezulu ogudileyo, onobunzima obuphezulu.
2.2 Iimpawu zeNkqubo eziPhambili
Ukusebenza kakuhle kweDeposing: I-SAW ingasebenzisa umbane omkhulu (ngesiqhelo i-300~800A) kwi-continuous welding, izinga lokufakwa kwe-deposit lingafikelela kwi-8~12 kg/h, eliphindwe ka-2~3 ngaphezu kwe-manual arc welding, efanelekileyo kwimveliso enkulu yeepleyiti zokuguguleka kwindawo enkulu.
Ulwakhiwo lwe-Alloy oluLawulayo: Ucingo olune-Flux-core lungongeza izinto ezahlukeneyo ezenza i-carbide ezifana ne-chromium, i-molybdenum, i-vanadium, i-tungsten kunye ne-niobium kwi-powder core, enokulawula ngokuchanekileyo ubulukhuni kunye nokumelana nokuguguleka komaleko womphezulu ngokulungelelanisa umxholo wezi zinto, xa kuthelekiswa nocingo oluqinileyo, lunokuguquguquka okukhulu kuyilo lwe-alloy.
Umgangatho Olungileyo Wokwenza: Phantsi kokhuseleko lwe-arc flux engaphantsi komhlaba, umaleko womphezulu uyafana kwaye ugudile, akukho splatter icacileyo, kwaye umthwalo womsebenzi wokucubungula emva kokuwelda mncinci. Ubunzulu bokungena bunokulungiswa ngokutshintsha iiparameter zokuwelda, ezinokulawula ngokufanelekileyo isantya sokunyibilika kwe-substrate kumaleko womphezulu, ukuqinisekisa ubunzima kunye nokumelana nokuguguleka komaleko womphezulu.
Ukusebenza Okuzenzekelayo Okuzinzileyo: Yonke le nkqubo inokufezekiswa ngokusebenza ngoomatshini nangokuzenzekelayo, nto leyo enciphisa iimfuno zezakhono zabasebenzi kwaye iqinisekise ukuhambelana komgangatho wepleyiti nganye yokuguguleka.
Ulwahlulo lweNkqubo ye-Alloy eqhelekileyo kunye nokusebenza kwayo
Iingcingo ze-SAW flux-core ze-wear plate hardfacing zihlelwa ngokwendlela ezibunjwe ngayo i-alloy, kwaye iinkqubo ezahlukeneyo ze-alloy zihambelana neemeko ezahlukeneyo zokusetyenziswa kunye nokumelana nokuguguleka. Uhlu oluqhelekileyo lolu lulandelayo:
| Inkqubo ye-alloy | Izinto eziphambili ze-Alloy | Uluhlu Lobunzima (HRC) | Iimpawu eziphambili zokusebenza | Izicelo eziqhelekileyo |
| Uhlobo lwentsimbi yeChromium ephezulu | Cr 15~30%, C 2~5%, isixa esincinci seMo, Ni, Nb | 55~65 | Ukumelana nokuguguleka okugqwesileyo, ukumelana nempembelelo ethile, ixabiso eliphantsi, inkqubo ye-alloy evuthiweyo | Iipleyiti zokuguguleka zemigodi ngokubanzi, ii-crusher liners, ii-samente mill liners, ii-scraper conveyor plates |
| Uhlobo lweChromium Carbide Composite | I-Cr 25~40%, C 3~6%, yongezwe i-V, W, Ti | 60~68 | Inxalenye ephezulu ye-carbide eqinileyo, ukumelana nokuguguleka okukhulu, ukuqina okuncinci | Iimeko ezifuna ukuguguleka kakhulu ezifana nezixhobo zokwenza isanti, amazinyo okutyumza isinyithi, iipleyiti zamazinyo ebhakethi yokumba |
| Uhlobo lweMartensite ye-Alloy yeCarbon ephantsi | Cr 4~10%, Mo 1~3%, Mn 1~2%, C 0.2~0.6% | 35~50 | Ukuqina kwempembelelo elungileyo, ukumelana kakuhle nokuqhekeka kwe-weld, inokuthwala umthwalo omkhulu wempembelelo, ukumelana nokuguguleka okuphakathi | I-blade ye-bulldozer, ipleyiti yomphetho webhakethi yokumba, umphezulu omkhulu wefosholo yokumba odinga ukumelana nempembelelo ephezulu |
| Uhlobo lweNiobium Vanadium Carbide | Inqaku 10~20%, V 5~15%, Cr 10~15% | 62~68 | I-carbide eqinileyo ecoliweyo, ukumelana nokuguguleka okugqwesileyo kunye nokusebenza kakuhle kobushushu obuphezulu | Iimeko zokuguguleka kobushushu obuphezulu ezifana neepleyiti zokuhambisa ezinobushushu obuphezulu, ii-sintering equipment liners |
| Uhlobo oluQinisekisiweyo lweCeramic oluDibeneyo | Kongezwe amasuntswana e-ceramic afana ne-WC, i-TiC kwi-powder core | 65~72 | Ukumelana nokuguguleka okugqithisileyo, ixabiso eliphezulu | Iimeko ezigqithisileyo zokuguguleka ezifana needrama zokucheba imigodi yamalahle, ii-pick machine pick holders |
Izalathisi zokusebenza eziphambili zepleyiti yokunxiba
Ukusebenza kwepleyiti yokunxiba eqinileyo kuvavanywa ikakhulu zizikhombisi ezilandelayo:
4.1 Ukuqina Kwemaleko Yomphezulu
Ukuqina yeyona nto iphambili ekulinganiseni ukumelana nokuguguleka. Ngokubanzi, xa ubunzima buphezulu, kokukhona ukumelana nokuguguleka kungcono. Ukuqina kweepleyiti zokuguguleka ezikwimarike kugxile kakhulu kwi-50 ~ 65 HRC, kwaye iimveliso ezikhethekileyo zinokufikelela kwi-70 HRC. Kufuneka kuqatshelwe ukuba uvavanyo lokuqina kufuneka lwenziwe emva kokuba umaleko womphezulu uzinzisiwe, ngokubanzi emva kokususa umaleko we-slag kunye ne-dilution engaphezulu kwe-1 ~ 2mm ukuqinisekisa ukuba iziphumo zovavanyo ziyinyani.
4.2 Izinga lokuHlanganisa
Izinga lokunyibilika libhekisa kumlinganiselo wezinto ezinyibilikisiweyo ze-substrate ezixutywe kumaleko womphezulu. Izinga lokunyibilika eliphezulu kakhulu liya kunciphisa umxholo wezinto ze-alloy kumaleko womphezulu, nto leyo ebangela ukuncipha kobunzima kunye nokumelana nokuguguleka. Kwi-hardfacing ye-SAW ene-flux-cored wire, ulawulo olufanelekileyo lwenkqubo lunokulawula izinga lokunyibilika ngaphakathi kwe-10 ~ 20%, kwaye umphezulu onomgangatho omninzi unokunciphisa ngakumbi impembelelo yokunyibilika.
4.3 Ukumelana neentanda
Uninzi lweeleya eziqinileyo ezigugileyo zizinto ezinekhabhoni ephezulu kunye nezinto ezine-alloy ephezulu, ezinokubangela iintanda zokuwelda ngexesha lokupholisa. Uyilo olufanelekileyo lwefomula yocingo olune-flux-core kunye nokufudumeza kwangaphambili ngaphambi kokuwelda (ngokubanzi ukufudumeza kwangaphambili ukuya kwi-150 ~ 300℃ ngokweenkqubo ezahlukeneyo ze-alloy) kunokunciphisa ngempumelelo ukuthambekela kokuqhekeka. Kwizicelo ezingadingi zintanda kumphezulu wepleyiti yokugugileyo, iinkqubo ze-alloy ezinekhabhoni ephantsi okanye iifomyula ezikhethekileyo ezimelana nokuqhekeka zinokukhethwa.
4.4intsimbi yekhabhoni, kwaye ipleyiti yokunxiba eqinisiweyo enokuhlanganiswa ingafikelela ngaphezulu kwe-20 timUkumelana nokunxiba
Eyona nto ibonakalayo yokuvavanya ukusebenza kwepleyiti yokuguguleka kukuxhathisa ukuguguleka, oko kukuthi, umlinganiselo wokulahleka kobunzima bepleyiti yokuguguleka evavanyiweyo kunye nesampuli esemgangathweni phantsi kweemeko ezifanayo zovavanyo lokuguguleka. Ukuxhathisa ukuguguleka kwepleyiti yesinyithi esiqinileyo esine-chromium ephezulu ngokuqhelekileyo kuphindwe ka-5 ukuya kwi-10 kunee-es eziqhelekileyo eziphantsi.
Isikhokelo soKhetho lweZimo ezahlukeneyo zoSetyenziso
Xa ukhetha ucingo olune-SAW flux-core kwi-wear plate hardfacing, kufuneka luhambelane ngokwendlela eyintloko yokusilela kwenxalenye yokuguguleka:
Ukuguguleka okurhabaxa okunempembelelo encinci: Ezifana nesamente eyomileyo, ipleyiti yokuvavanya i-ore, i-sand conveyor. Kucetyiswa ukuba ukhethe ucingo olune-flux-core olune-chromium ephezulu ene-58~62 HRC, olunexabiso eliphezulu lokusebenza kwaye lunokuhlangabezana neemfuno zobomi benkonzo.
Impembelelo enamandla kunye nokuguguleka okurhabaxa: Njengeblade ye-bulldozer, ibhakethi yoomatshini bobunjineli, intloko yesando semayini. Kufuneka ukuba umaleko omelana nokuguguleka ube nokuqina okuthile ngelixa unamandla okuguguleka, kwaye kuyacetyiswa ukuba ukhethe ucingo olune-martensitic alloy flux-cored olune-40~50 HRC ukuze kuthintelwe ukuxobuka nokuqhekeka komaleko womphezulu xa utshayiswa.
Iimeko zokuguguleka okuphezulu kakhulu: Ezifana nezixhobo zokusebenza zoomatshini bokwemba amalahle, iipleyiti zokuguguleka zokwakha iindlela, ii-iron ore crushing liners. Kucetyiswa ukuba ukhethe i-chromium carbide composite okanye i-ceramic reinforced flux-core wire ene-62~68 HRC, enokwandisa ubomi benkonzo yezixhobo, nangona ixabiso liphezulu.
Ukuguga kobushushu obuphezulu: Ezifana neepallets zomatshini wokusila, iipleyiti zokuhambisa ze-coke oven, iipleyiti zokucubungula i-slag ze-metallurgical. Kucetyiswa ukuba ukhethe ucingo oluxutywe ne-niobium-vanadium alloyed flux-cored, olugcina ubulukhuni obuphezulu kunye nokumelana ne-oxidation kumaqondo obushushu asebenzayo ukuya kuthi ga kwi-600℃.
Amanqaku ekufuneka aqwalaselwe kwinkqubo yokuwelda
Ukuze ufumane iipleyiti zokuguguleka ezisemgangathweni ophezulu, kuyimfuneko ukulawula amanqaku aphambili enkqubo yokuwelda:
Amalungiselelo ngaphambi kokuWelda: Umphezulu we-substrate kufuneka ucocwe kwi-oyile, umhlwa kunye ne-oxide scale ukuze kuthintelwe ukubola kunye neziphene zokufakwa. Kwi-substrates ezityebileyo kunye neentambo ezine-alloy ephezulu, ukufudumeza kwangaphambili ukuya kwi-150~300℃ kwangaphambili kunokunciphisa uxinzelelo lwe-welding kwaye kuthintele ukuqhekeka.
Ukukhethwa kweParamitha: Kwintambo eqhelekileyo ene-flux-cored wire eyi-1.2mm ~ 2.4mm ububanzi, umsinga wokuwelda uhlala uyi-250 ~ 600A, i-voltage yokuwelda yi-28 ~ 38V, kwaye isantya sokuwelda yi-300 ~ 600mm / min. Okukhona ububanzi bomsinga bukhulu, kokukhona umsinga ohambelanayo uphezulu. Ukunciphisa ngokufanelekileyo umsinga wokuwelda kunye nokwandisa isantya sokuwelda kunokunciphisa izinga lokunyibilika kwesiseko.
Uyilo lweMaleko yokuGqibela: Ubukhulu beleya enganyangekiyo buyilwe njenge-3 ~ 12mm. Kwileya eneeleya ezininzi, ubushushu beleya phakathi kufuneka bulawulwe bungadluli kwi-300℃ ukuze kuthintelwe ukukhula okukhulu kakhulu kwengqolowa okuchaphazela ukusebenza. Kwiipleyiti ezigugileyo ezifuna ukugotywa nokucutshungulwa emva kokucutshungulwa, leya kufuneka yenziwe kwi-substrate emva kokugotywa kwangaphambili ukuze kuthintelwe ukuqhekeka okubangelwa kukugotywa emva kokugotywa.
Unyango emva kokuwelda: Emva kokuwelda, kufuneka ipholiswe kancinci, ngakumbi kwiintambo ezine-alloy ephezulu, ukuze kuthintelwe ukuqhekeka okubangelwa kukupholisa ngokukhawuleza. Kwiindawo ezifuna ukukhululeka kuxinzelelo, ukutsalwa koxinzelelo kungenziwa kwi-200 ~ 300℃ emva kokuwelda ukuze kupheliswe uxinzelelo olushiyekileyo lokuwelda.
Indlela yoPhuhliso lweShishini
Kwiminyaka yakutshanje, ucingo olune-SAW flux-cored wire for wear plate hardfacing lunezi zikhokelo zilandelayo zophuhliso:
Ekuqaleni,uyilo lwe-alloy olusebenza kakuhle, usetyenziso oluninzi lufuna ukumelana nokuguguleka okuphezulu kunye nobomi benkonzo obude, ngoko ke uphuhliso lweengcingo ezidityanisiweyo ezifana ne-WC kunye ne-TiC luyakhawuleza, kwaye inani leengcingo ezine-alloy ephezulu kwimarike liyanda minyaka le.
Isibini,ukuphuculwa kokuqina nokungabi nazimfanta, izicelo ezininzi zobunjineli zifuna ukuba umphezulu wepleyiti yokuguguleka ungavumeli ukuqhekeka, nto leyo ekhuthaza uphuhliso lweefomyula ezinganyangekiyo kwiiqhekeka ezinekhabhoni ephantsi, ezilinganisela ubulukhuni kunye nokuqina ngokuphucula umlinganiselo we-alloy kunye nolawulo lwe-microstructure.
Isithathu,imveliso enobuhlobo nokusingqongileyo, isizukulwana esitsha sentambo eneentambo ezijikelezayo sinciphisa umxholo wezinto ezinobungozi ezifana ne-cobalt kunye nezinto ezine-radioactive, kwaye i-arc flux ehambelanayo ikwaphuhlisa ukuya kwiindlela ezingcolisekileyo nezingasetyenziswa kwakhona, ezihlangabezana neemfuno zokwenziwa okuluhlaza.
Isine,uphuhliso olulungiselelwe wena, kwiimeko ezahlukeneyo zokunxiba kwimizi-mveliso eyahlukeneyo, abavelisi baqalise iimveliso ezinikezelweyo ezihlukeneyo, ezinokufezekisa ukuhambelana okuchanekileyo kokusebenza, ziphephe ukuchitha ixesha okanye ubomi obungonelanga obubangelwa kukusetyenziswa kweemveliso ngokubanzi.
Intshayelelo yeNkampani
I-Tangshan Runxing Machinery Co., Ltd., umenzi ochwephesha okwiTangshan, kwiPhondo laseHebei ogxile kwi-R&D, imveliso kunye nenkonzo yokwakha kwindawo yeemveliso zesinyithi ezinganyangekiyo ezihlala ziqinile, yasekwa ngo-2010.
Iimveliso zethu eziphambili ziquka iipleyiti zokunxiba ze-chromium carbide overlay (CCO), ii-wear liners ezenziwe ngokwezifiso, iipayipi ezinganyangekiyo kunye nezixhobo zepayipi, iintambo zokuwelda ezine-hardfacing flux-core, oomatshini bokuwelda be-hardfacing abazenzekelayo, kunye nenkonzo yobuchwephesha yokulungisa i-roller surface. Silandela ingcamango yeshishini ethi "Ingqibelelo, Umgangatho oPhezulu, Ubuchule kunye noPhuhliso oluZinzileyo" kunye netekhnoloji yethu yokulungisa i-metal surface hardfacing evuthiweyo.
Sinikezela ngezisombululo ezenzelwe wena ezikwaziyo ukumelana nokuguguleka kwimizi-mveliso yesamente, intsimbi, imigodi, izibuko kunye nokwakha izinto ezimdaka kwihlabathi liphela, kwaye sifumene udumo oluhle kwimarike eRashiya naseAsia Ephakathi.
Lonke ishishini lokuthumela ngaphandle ligunyazisiwe kwaye liphathwa yiHebei Yuwan International Trade Co., Ltd. Le nkampani yorhwebo igqibezela yonke imisebenzi yokuthumela ngaphandle kuquka ukucocwa kwempahla, ukuthunyelwa, amaxwebhu kunye nokuqokelelwa kwentlawulo. Umzi-mveliso wethu ugxile kuphuhliso lwemveliso kunye nemveliso ukuqinisekisa umgangatho ozinzileyo wemveliso kunye nokuhanjiswa ngexesha.
I-Runxing Machinery inethemba elinyanisekileyo lokuseka intsebenziswano yexesha elide kunye nokufezekisa inzuzo efanayo nawe!
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