I-Stellite 21 vs I-Stellite 6: Ukukhetha i-Cobalt Alloy Parts yokuNxitywa kunye ne-Corrosion 

I-Stellite 6 yingxubevange yeenjineli ezininzi ezifikelela kuqala xa a inxalenye ye-cobalt esekelwe kwi-alloy iimfuno zokunxiba. Ibhalwe kakuhle, ifumaneka ngokubanzi, kwaye iqhuba kakuhle kuluhlu olubanzi lweemeko zokunxitywa kwe-abrasive kunye nokuncamathelisa. Kodwa igama elithi "default" akufani nokuthi "optimal." Xa inxalenye ingasileli ngenxa yokukrazuka kodwa isuka kwibhayisekile eshushu, intsimbi ukuya kwintsimbi, okanye ukunxitywa koncedo lokutya, stellite 21 inxalenye inokuba lolona khetho lukhuselekayo. Olu thelekiso lubhalelwe iinjineli zoyilo kunye nabathengi abanxibayo abafuna ukuqonda kutheni ii-alloys ezimbini ziyahlukana, apho nganye yeyakhe, kwaye ukuba uqinisekise ntoni ngaphambi kokwenza ingcaciso.

Kutheni iStellite 6 iMiselwe-kwaye Xa iStellite 21 ilolona khetho lungcono

I-Stellite 6 ifumana isimo sayo esingagqibekanga ngokudibanisa umxholo ophezulu wekhabhoni kunye ne-tungsten-based based solid-solution-solution. Isiphumo siluqilima, ingxubevange engagugiyo ephatha amasuntswana abrasive, ukhukuliseko, kunye nokuthotywa komatshini ngokubanzi kuluhlu olubanzi lobushushu. Ukwenziwa kwayo kunye neendlela eziqinileyo zikhulile, kwaye ukuqhelana nomthengisi kuphezulu. Kwizihlalo ezininzi zevalve, imikhono yempompo, kunye amacandelo okunxiba jikelele, I-Stellite 6 yindawo yokuqala efanelekileyo.

Isiginali yokuthathela ingqalelo iStellite 21 ibonakala xa umatshini wokusilela utshintsha. Ukuba inxalenye iyaqhekeka phantsi kwemijikelezo ye-thermal ephindaphindiweyo, ukuba iindawo zokutywina zibamba ngexesha le-metal-to-metal sliding, okanye ukuba indawo yenkonzo idibanisa ukunxiba kunye ne-corrosive medium, ubunzima obuphezulu be-Stellite 6 abunakukwazi ukujongana nale ngxaki. I-Stellite 21 irhweba ngobulukhuni begumbi lobushushu bokuqina, ukuxhathisa ukudinwa kwe-thermal, kunye nokuziphatha okuphuculweyo kwe-corrosion kumajelo athile eendaba. Umbuzo awukho ukuba yeyiphi i-alloy "engcono," kodwa yeyiphi i-alloy ehambelana nendlela inxalenye eya kusilela ngayo.

Iiyantlukwano Zokuqulunqa ziqhuba njani ukusebenza

Umsantsa wokusebenza phakathi kwezi ngxubevange zimbini ze-cobalt wehla kwiindlela ezimbini zokukhetha ezenziwe ngabom.

Umsantsa woMxholo weCarbon: Ukuqina vs Ductility

I-Stellite 6 ithwala malunga ne-0.9-1.4% yekhabhoni, ngelixa i-Stellite 21 ibamba malunga ne-0.20-0.35%. Loo mahluko ulawula ukuba zininzi kangakanani iifom ze-carbide kwi-microstructure. Ikhabhoni ephezulu kwi-Stellite 6 ithetha umthamo omkhulu we-chromium-rich carbides, eguqulela ngokuthe ngqo kubunzima obuphezulu kunye nokuchasana okungcono kokunxitywa kwe-abrasive. Ikhabhoni esezantsi kwi-Stellite 21 ishiya ngaphezulu kwe-cobalt solid-solution matrix eveziweyo, enciphisa ubulukhuni kodwa igcina i-ductility kunye nokukwazi ukujongana noxinzelelo lwe-thermal ngaphandle kokuqhekeka.

Amaxabiso obunzima axeliweyo kwi-Stellite 21 ngokuqhelekileyo awela kuluhlu lwama-27–40 HRC, amaxabiso aphezulu anokufikelelwa ngokuqiniswa komsebenzi (ukuya kutsho malunga nama-48 HRC). I-Stellite 6, ngokuthelekisa, ngokuqhelekileyo icatshulwa kwi-40-45 HRC kwimeko ebekiweyo. La manani abonisa kunokuba achaze: indawo etyhidiweyo okanye eyenziweyo ye-Stellite 21 ingaba neepropati ezahlukeneyo kunokwaleka kwe-weld, kwaye idatha yovavanyo yokwenene yomthengisi kufuneka ilawule ukucaciswa.

I-Tungsten vs Molybdenum: I-Solution-Solution eQinisekileyo iNgcaciso

I-Stellite 6 isebenzisa i-tungsten ukomeleza-isisombululo esiqinileyo, ngelixa i-Stellite 21 ithatha indawo ye-molybdenum. Ukutshintshana akuyonto ilula yokutshintsha enye kwenye. I-Molybdenum inobunzima obumalunga nesiqingatha se-athomu ye-tungsten, ngoko ke kwipesenti yobunzima obufanayo igalela malunga ne-athomu ephindwe kabini kwi-matrix. Lo mahluko wenqanaba leathom uchaphazela indlela ingxubevange eziphatha ngayo kumaqondo obushushu aphakamileyo.

Okubaluleke ngakumbi ekusebenzeni kokubola, i-molybdenum ibonwa ngokubanzi njengeluncedo ekunciphiseni imeko. Uphononongo lwe-laser-cladding oluthelekisa iialloyi ezimbini lufumanise ukuba i-Stellite 21 layers ibonise ukumelana nokugqwala okungcono kune-Stellite 6 layers phantsi kweemeko zovavanyo ezisetyenzisiweyo. Ukongezwa kwe-molybdenum kwakhona kunciphisa ukuthambekela kwemvula ye-intermetallic kwiqondo lokushisa eliphezulu, elixhasa ukuzinza kwe-alloy ye-thermal kwinkonzo ye-cyclic. Ezi luncedo olunentsingiselo, kodwa zikhetha: I-Stellite 21 ayinyangeki kwi-corrosion jikelele kune-Stellite 6, kwaye okuphakathi, ubushushu, kunye nemo yokuphefumla kufuneka ivavanywe. Kwi-cavitation erosion, umzekelo, i-Stellite 6 iye yaxelwa ukuba iphumelele i-Stellite 21 kwizifundo zokuthelekisa i-weld.

Ukuthelekiswa kokuSebenza: Ukuqina, Ukuqina, Ukukhathala kwe-Thermal, kunye neGalling

Itheyibhile engezantsi ishwankathela umahluko obonakalayo wokwenziwa komsebenzi. Amaxabiso ziindawo zesalathiso, aziqinisekiswanga. Iikhrayitheriya zokugqibela zokwamkelwa kufuneka zisekelwe kwidatha elinganisiweyo yomthengisi kwifom yemveliso ethile kunye nendlela yokuvelisa.

Isifundo siyaqhubeka i-laser-clad layers wafumanisa ukuba i-Stellite 6 yayinzima kancinci kufuphi nomphezulu ophezulu, ngelixa i-Stellite 21 ibonisa ukunyanzeliswa kwe-sliding ephezulu kakhulu ngenxa ye-coefficient ephantsi ye-friction-i-counterpoint enomdla kwingcinga yokuba ubunzima obuphezulu buhlala buthetha ukusebenza kakuhle kokunxiba. Into ethathwayo kukuba indlela yokunxiba ibaluleke ngaphezu kwenani elinye lobunzima.

Imephu yeSicelo: Ukutshatisa i-alloy kwiMowudi yokuFaila

Apho i-Stellite 6 ingena khona: Izihlalo zeValve, i-Pump Sleeves, i-Abrasive Wear

I-Stellite 6 lukhetho olufanelekileyo xa imowudi yokuthotywa kwecandelo eliphambili liyi-abrasive okanye i-erosive wear evela kwiincinci ezinzima, i-slurry, okanye i-high-velocity fluid. Izihlalo zevalve yesango kunye neewedges, iidiski zevalve yeglowubhu, khangela iiflapper zevalve, kwaye amacandelo impompo evezwe kwimidiya abrasive zisekiweyo izicelo. Umxholo ophezulu we-carbide unika umqobo onzima ngokuchasene nokususwa kwezinto eziphathekayo.

I-Stellite 6 ikwayindawo ekhuselekileyo xa indlela yokuvelisa ibandakanya i-welding okanye i-hardfacing kwi-substrate yentsimbi kwaye umthengisi unamava amaninzi kunye nenkqubo. Iimpawu zokudibanisa i-alloy zibonakaliswe kakuhle, kwaye iinkqubo zokulawula ukuhlanjululwa ziqondwa ngokubanzi.

I-Caveat enye: ukuba inkonzo ye-abrasive ikwabandakanya i-corrosive medium, i-Stellite 6 isenokungabi lolona bakala lufanelekileyo. Kuloo meko idityanisiweyo yokunxiba, iStellite 21 ibonise ukusebenza okungcono kuvavanyo lwelabhoratri.

Apho i-Stellite 21 ingena khona: ukuHamba ngeBhayisikile ngeThermal, aMacandelo amancinci, amacandelo e-Gas Turbine

Iinzuzo ze-Stellite 21 zivela kwiimeko ezintathu. Okokuqala, ukuhamba ngebhayisikili ye-thermal: umxholo wekhabhoni ephantsi kunye ne-molybdenum yongezwa kunciphisa amandla okuqhuba ukuqhekeka phantsi kokufudumeza okuphindaphindiweyo kunye nokupholisa. I-Stellite 21 isetyenziswe kwimisebenzi eshushu kunye ne-buffer layer apho ukwandiswa kwe-thermal ukungahambelani phakathi kwe-steel substrate kunye ne-hardfacing kufuneka ilawulwe. Okwesibini, iindawo ezinqabileyo ezinqabileyo okanye eziyinkimbinkimbi zejometri zizuza kubunzima obuphezulu, okunciphisa umngcipheko wokuqhekeka ngexesha lokucubungula okanye inkonzo. Okwesithathu, izitywina zokutyibilika kwesinyithi ukuya kwintsimbi kunye nonxibelelwano olune-galling lunokwenza ngcono nge-Stellite 21, nangona oku kuxhomekeke kwizinto ezithile zokukhwelana kunye noxinzelelo loqhagamshelwano.

Uphononongo olupapashiweyo lwemeko luchaza ukulungiswa kwe-laser cladding ye-high-pressure turbine blades usebenzisa i-Stellite 21 powder, kunye ne-blades ezilungisiweyo ezibonisa ukonyuka kokuqina kunye nobude xa kuthelekiswa nemathiriyeli yereferensi eyenziwe ngokuqhelekileyo. Oku kubonisa indima ye-alloy ekubuyiseleni amacandelo exabiso eliphezulu apho ukudinwa kwe-thermal kunye nokunyaniseka kwesakhiwo kubaluleke kakhulu.

Umda omnye ufanele ugxininiso: I-Stellite 21's low carbide volume ithetha ukuba inika ukuchasana okulinganiselweyo kukhukuliseko olunzima. Ngaphantsi kweemeko ezinzima ezinobungozi ezibandakanya amaqhekeza abukhali ngesantya, i-Stellite 6 ihlala iyona khetho olufanelekileyo.

Imibuzo emihlanu omele uyiqinisekise phambi kokuchaza iStellite 21 Icandelo

Xa wenze isigqibo sokuba a stellite 21 inxalenye licala elichanekileyo, inyathelo elilandelayo kukuqinisekisa ukuba umthengisi angazisa iipropathi ozifunayo. Ukutyunjwa kwe-alloy yodwa akwanelanga, kuba iimpawu ze-Stellite 21 zemishini zixhomekeke kakhulu kwindlela yokuvelisa kunye nonyango lokushisa.

1. Ithini indlela yokuvelisa?
Isakhiwe, yenziwe, okanye ilukhuni? Ngamnye uvelisa i-carbide morphology eyahlukileyo, ubunzima, kunye nokuqina. Inxalenye etyhidiweyo kunye ne-laser-clad overlay ye-alloy efanayo ayitshintshi. Cela umthengisi ukuba achaze indlela ngokucacileyo kwaye anike ummeli wedatha yaloo ndlela.

2. Ungabonelela ngokusabalalisa ubunzima kwindawo yonke?
Ubunzima bokufunda kwikhuphoni yovavanyo aluqinisekisi icandelo eligqityiweyo. Cela idatha yobunzima beengongoma ezininzi, ngakumbi kwiindawo ezinobunzima becandelo okanye impendulo yonyango lobushushu.

3. Yintoni imeko yonyango lokushisa?
I-Stellite 21 inokusebenza nzima ngexesha lomatshini kunye nokunxiba. Imeko yokuhanjiswa ibalulekile. Ukuba ukuthomalalisa okanye ukuthomalalisa uxinzelelo kuye kwenziwa, iirekhodi kufuneka zifumaneke. Ukuba inxalenye isetyenziswe kwimeko yobunzima bomsebenzi, ubungakanani kunye nokufana kokuqina komsebenzi kufuneka kubhalwe phantsi.

4. Ngaba kukho ubungqina obunxulumene nendlela yokungaphumeleli ekujoliswe kuyo?
Ukuba isizathu sokukhetha i-Stellite 21 kukunganyangeki kokudinwa ngubushushu okanye ukunganyangeki, buza ukuba ngaba umthengisi unamava okanye idatha yovavanyo elungisa loo ndlela ikhethekileyo. Iinkcukacha zealloyi ngokubanzi zisisiqalo, hayi indawo yobungqina obuthile besicelo.

5. Ngawaphi amaxwebhu ahamba nenxalenye?
Ukuqinisekiswa kwezinto eziphathekayo, ukulandelwa kubushushu okanye kwiqashiso, kunye neerekhodi zokuhlola kufuneka zichazwe. Kwinkonzo ebalulekileyo, isatifikethi kufuneka sichonge i-alloy ngenombolo ye-UNS (R30021 ye-Stellite 21) kunye nomgangatho osebenzayo.

FAQ

Ngaba iStellite 21 iyakwazi ukumelana nomhlwa kuneStellite 6?

Kwimithombo yeendaba ethile, ngakumbi ukunciphisa okanye iimeko ezintsonkothileyo ezineasidi, iStellite 21 ibonise ukunganyangeki kwe-corrosion engcono kwizifundo ezithelekisayo. Nangona kunjalo, ayikho ngaphezu kwayo yonke indawo. Indawo ethile ephakathi, iqondo lobushushu, kunye nemo yokuphefumla imisela ukusebenza, kunye novavanyo lokuhlwa kweyona nkonzo iyacetyiswa. I-Stellite 6, umzekelo, ibonise ukuchasana okungcono kwi-cavitation erosion kwizifundo zokuthelekisa i-weld.

Ngaba ndingatshintsha iStellite 6 kwiStellite 21 ngaphandle kokutshintsha uyilo?

Kuphela ukuba indlela yokusilela ayixhomekeke kwiipropati ezahlulayo. Ukuba esona sizathu siphambili sokukhetha iStellite 21 ibikukunganyangeki kokudinwa ngubushushu okanye ukunganyameki, ukufaka endaweni ye-Stellite 6 akunakuyisombulula ingxaki kwaye kungayenza ibe mandundu. Ukhetho kufuneka luqwalaselwe kwakhona ngokuchasene neyona ndlela yokusilela.

Ngaba i-Stellite 21 inzima ngokwaneleyo kwizicelo zokunxiba?

Ubunzima bodwa buyikhrayitheriya yokukhetha kakubi. I-Stellite 21 ithambile kune-Stellite 6 kwimeko egciniweyo kodwa inokusebenza nzima enkonzweni (ukuya kuthi ga kwi-48 HRC), kwaye ukusebenza kwayo kuxhomekeke kwindlela. Kwi-abrasion ye-hard-particle abrasion, i-Stellite 6 ikhethwa ngokubanzi. Ngokutyibilika, ukugabadela, okanye ukukhwela ibhayisekile eshushu, iStellite 21 inokusebenza kakuhle ngaphandle kobunzima obusezantsi.

Ngaba zombini ii-alloys zinokusetyenziswa ngokufaka i-hardfacing?

Ewe. I-Stellite 6 lelona bakala lixhaphakileyo le-hardfacing, kodwa i-Stellite 21 iyafumaneka njenge-welding wire kunye nomgubo wokwaleka kunye neenkqubo zokugquma. Iiparamitha zenkqubo kunye nokulawulwa kwe-dilution ziyahluka, kwaye umthengisi kufuneka abe neenkqubo ezifanelekileyo zokudibanisa i-alloy kunye ne-substrate ethile.

Yeyiphi eyona nkcazelo idla ngokungahoywa xa uodola iinxalenye zeStellite 21?

Indlela yokuvelisa kunye nemeko yonyango lokushisa. Ezi zinto zinempembelelo kwiipropati zokugqibela ngaphezu kokwakhiwa kwe-alloy yegama le-Stellite 21, kunye nenkcazo yokuthenga ebiza kuphela i-alloy grade ishiya izinto ezibalulekileyo ezingachazwanga.

Cela iNkxaso yokuKhetha okanye iSiqinisekiso seMathiriyeli

Ukuba uvavanya a inxalenye ye-cobalt alloy kwisicelo sokunxiba okanye ukubola kunye nesidingo sokugqiba ukuba ngaba i-Stellite 21 okanye i-Stellite 6 iyona nto ingcono, inyathelo elilandelayo elivelisa kakhulu kukwabelana ngenxalenye yomzobo kunye nenkcazo yendlela yokungaphumeleli elindelekileyo kunye nomthengisi osebenza kunye ne-alloys zombini. Cacisa ubushushu benkonzo, iimeko zokukhwela ibhayisekile, umphezulu wokukhwelana, kunye nendawo enomhlwa ukuba iyasebenza. Umthengisi onamava nge Amalungu e-Stellite alloy kufuneka ukwazi ukuxoxa ngorhwebo oluphathekayo kwaye unikeze isiqinisekiso semathiriyeli, ubulukhuni bedatha, kunye noxwebhu lwendlela yokwenziwa kweendawo oziqwalaselayo.