Izingxenye ze-Monel Alloy: Izakhiwo, Izinqubo Zokukhiqiza, kanye Nezicelo Zezimboni 

Izingxenye ze-Monel alloy ziyizingxenye zezimboni ezenziwe ngohlelo lwe-nickel-copper alloy futhi zikhiqizwa ngokusakazwa, ukukhanda, noma ukwenza. Acaciswa lapho ama-carbon steels, ama-stainless steels, namanye ama-alloys amaningi angakwazi ukubambelela: isevisi yamanzi olwandle, ukuphatha i-hydrofluoric acid, indawo enciphisa i-asidi, kanye nemifudlana yenqubo ye-alkali. Ingxenye ye-Monel alloy ayisona isigaba somkhiqizo owodwa. Iwumndeni wezingxenye izinga lawo lempahla, umzila wokukhiqiza, kanye nezimfuneko zokuhlolwa okufanele zifaniswe nesimo sangempela sesevisi. Lesi sihloko sakha leso sigaba sesithombe ngesigaba: ukuthi iyini i-Monel, yimaphi amamaki abalulekile ezingxenyeni ezithile, indlela impahla eziphatha ngayo, indlela ukusakaza nomshini okhethwa ngayo, yiziphi izinhlobo zezingxenye ze-Monel ezitholakalayo, lapho zisetshenziswa khona, nokuthi yini umthengi okufanele ayiqinisekise ngaphambi kokufaka i-oda.

Iyini Ingxenye ye-Monel Alloy?

I-Monel iwumndeni we-nickel-copper alloy lapho i-nickel iyingxenye ebusayo, ngokuvamile engu-63% ubuncane (i-Ni + Co), enethusi njengesengezo esiyinhloko sokuhlanganiswa kwengxube ebangeni elicishe libe ngu-28% kuya ku-34%. Lezi zinsimbi ezimbili zakha isixazululo esiqinile esiqhubekayo, esinikeza ingxubevange isakhiwo se-austenitic esizinzile sesigaba esisodwa kulo lonke izinga lokushisa elibanzi futhi isekela kokubili ukuziphatha kwayo kokugqwala kanye nokuqina kwayo.

Ingxenye ye-Monel alloy yinoma iyiphi ingxenye ekhiqizwe kusukela kulolu hlelo lwengxubevange: indlu yepompo elilintshisene, isiqu sevalvu eyenziwe ngomshini, into yokubopha efojiwe, ishubhu eligoqiwe nelishiselwe lokushintsha ukushisa. Izinto ezisetshenziswayo zinganikezwa njengokulingisa, isitokwe sebha, ipuleti, ishubhu, ama-forging, noma izintambo, futhi umzila wokwenza ingxenye ulandela ukusuka kumumo kanye nenani elidingekayo.

I-Monel ivame ukuhlanganiswa nayo izingxenye ze-alloy ezisekelwe ku-nickel, kodwa akufanele kuthathwe njengokushintsheka ngayo yonke ingxubevange ye-nickel. I-Inconel, i-Incoloy, ne-Hastelloy ingeyamasistimu e-alloy ahlukene anezinqubo ezihlukene zokuqinisa nokugqwala. I-Monel ikakhulukazi igatsha le-nickel-copper, futhi ngaphakathi kwalelo gatsha, i-Monel 400 iyibanga elibhekisela kakhulu, nakuba kungeyona yodwa. Umehluko ongokoqobo ubalulekile esigabeni sokuthenga: umdwebo ofuna i-“Monel” ngaphandle kwenombolo ye-UNS ushiya isikhala esiningi kakhulu sokutolikwa.

Indlela yokugqwala ye-Monel ihlukile kuleyo yensimbi engagqwali ngendlela ebalulekile. Izinsimbi ezingenasici zithembele kufilimu ye-passive ecebile nge-chromium. I-Monel ayincikile ku-chromium ukuze ivikeleke. Ukumelana kwayo kuvela kusixazululo esiqinile se-nickel-copper ngokwayo, esizinzile ngokwe-thermodynamically ekunciphiseni nasekungathathi hlangothi kwemidiya lapho izinsimbi ezingenasici zingase zibe nzima khona. Emanzini olwandle, isibonelo, insimbi engagqwali engu-316L isengozini yokuhlaselwa kwasendaweni okwenziwe yi-chloride kanye nokuqhekeka kokugqwala kwengcindezi ngaphansi kwezimo ezithile, kuyilapho i-Monel 400 isetshenziswa ngokuqondile ngoba imelana nokuqhekeka kokugqwala kokucindezeleka kwe-chloride futhi isebenza kahle emanzini olwandle agelezayo. Lokho akwenzi i-Monel ibe “ngcono” emhlabeni wonke; kuyenza ithuluzi elihlukile lesethi yezimo ezihlukile, okuhlanganisa ukunciphisa ama-asidi, i-hydrofluoric acid, nezindawo zasolwandle.

I-Common Monel Alloy Amabanga kanye Nomehluko Wawo

Amabanga amabili ahlanganisa ingxenye enkulu ye-Monel alloy ekuthengeni kwemboni: i-Monel 400 ne-Monel K-500. Babelana ngesisekelo esifanayo se-nickel-copper kodwa azishintsheki.

I-Monel 400 (UNS N04400)

I-Monel 400 iyibanga lesixazululo esiqinile. Iqiniswa isixazululo esiqinile se-nickel-copper ngokwaso esikhundleni sokusabela kwemvula, futhi inikezwa esimweni esifakwe emanzini noma esisetshenzwe ngokubanda kuye ngefomu lomkhiqizo kanye nezinga lamandla elidingekayo. Ku-annealle rod ne-bar, ubuncane bamandla obuncane obuqinile obubekiwe buvamise ukuba ngu-482 MPa (70 ksi), obuncane bamandla okukhiqiza obungu-172 MPa (25 ksi) kanye nobude obuncane obungu-35%. Amanani ajwayelekile ahlanganisiwe asukela phezulu - kubikwe amandla okuqinile acishe abe ngu-517–620 MPa, amandla okukhiqiza angu-172–345 MPa, nobude obungu-35–60% kuye ngesimo nosayizi. Lawa manani ayahluka ngefomu lomkhiqizo, usayizi, nezinga lokuhlola, ngakho-ke ukucaciswa kokuthenga kufanele kubhekise kuzinga elisebenzayo le-ASTM noma le-AMS kunokuncika eshidini ledatha elilodwa.

I-Monel 400 itholakala njengepuleti, ishidi, i-strip, ibha, induku, ishubhu, ipayipi, isitoko sokubumba, nokulingisa. Amazinga omkhiqizo ajwayelekile ahlanganisa i-ASTM B127 yepuleti neshidi, i-ASTM B164 yenduku nebha, i-ASTM B165 yamashubhu angenamthungo, kanye ne-ASTM B564 yokuqamba. Ngolimi lokuthenga, "ingxenye ye-Monel 400" kanye "nengxenye ye-Monel alloy 400" ngokuvamile isho into efanayo: ingxenye eyenziwe nge-UNS N04400. Inombolo ye-UNS iyinkomba ecacile okufanele ibekwe emdwebeni.

I-Monel K-500 (UNS N05500)

I-Monel K-500 inguqulo enzima ngeminyaka. Igcina isisekelo se-nickel-copper kodwa yengeza i-aluminium ne-titanium, okwakha u-γ′ omuhle wemvula yoku-oda i-Ni₃(Al,Ti) phakathi nokwelashwa okulawulwayo kokuguga. Lokho kusabela kwemvula kuphakamisa amandla kakhulu. Ngenduku nebha edonswa abandayo nendala ku-ASTM B865 / AMS 4676, amandla amancane okubamba ngokuvamile angu-896 MPa (130 ksi) kanye namandla esivuno amancane angu-586 MPa (85 ksi). Amanani abantu abadala ajwayelekile aphezulu - cishe i-1,100 MPa tensile kanye ne-790 MPa isivuno, kanye nobude obungama-20%.

Ukwelashwa kokuguga kuncike efomini lomkhiqizo kanye nokucaciswa okubusayo. Okwezinto ezifakwe emanzini, ishejuli emele i-580-590°C amahora angu-8-10 elandelwa ukupholisa komoya; okwenzelwe ukushisa kwentwasahlobo, 530–540°C amahora angu-4–6 okulandelwa ukupholisa komoya. Amanye amafomu omkhiqizo angase asebenzise inhlanganisela ehlukene yezinga lokushisa lesikhathi phakathi kwebanga elibanzi. I-oda lokuthenga le-K-500 kufanele libhekisele kwezinga elisebenzayo futhi lisho isimo esidingekayo kunokuthatha umjikelezo wokuguga wendawo yonke.

Umehluko osebenzayo wokukhethwa kwengxenye uqondile. I-Monel 400 ikhethwa lapho ukumelana nokugqwala kanye nokwakheka kuyizinto eziza kuqala namandla amaphakathi anele. I-Monel K-500 ikhethwa lapho kudingeka ukumelana nokugqwala okufanayo kodwa ingxenye futhi kufanele ithwale umthwalo wemishini ophakeme noma imelane nokuguga: ama-pump shafts, ama-impellers, iziqu zamavalvu, nezixhumi ezinamandla aphezulu ziyizinhlelo ezijwayelekile ze-K-500. I-K-500 nayo ihlala ingezona uzibuthe ukuya cishe ku-−101°C (−150°F), okubalulekile endaweni ethile kawoyela nasezintweni zikagesi.

Umthengi akufanele acabange ukuthi ingxenye ye-K-500 ingavele ithathelwe indawo ingxenye ye-Monel 400, noma okuphambene. Ukwelashwa kokuguga kushintsha ubukhulu kancane, ukuziphatha kwemishini kuyahluka, futhi ibhalansi yokuqina kwamandla ayifani. I-callout yebanga emdwebeni kanye ne-oda lokuthenga kufanele kufane nomsebenzi ohlosiwe wesevisi.

Amanye amamaki e-Monel akhona, njenge-Monel 401 ne-Monel 404, kodwa athatha izindawo ezimbalwa futhi akuwona amamaki ayinhloko okutholwa kuwo ngokujwayelekile ingxenye ye-Monel alloy. Ezinqumweni eziningi zokuthenga ezimbonini, umehluko we-400-versus-K-500 yiwo obalulekile kuqala.

Izakhiwo Ezibalulekile Zezingxenye Ze-Monel Alloy

Izici ezenza i-Monel isebenziseke ezingxenyeni aziyona inombolo yesihloko esisodwa. Ziyinhlanganisela: ukumelana nokugqwala kumidiya ethile, izinga lamandla amaphakathi ukuya phezulu, ukuqina okuhle, nokuziphatha komzimba okubikezelwayo. Okubalulekile ekwakhiweni kwengxenye nokuthengwa kwempahla ukuthi lezo zakhiwo zihambisana kanjani nendawo yesevisi.

Ukumelana nokugqwala kuhlanganiswe nemidiya ethile

I-Monel 400 yenza kahle emanzini olwandle, ikakhulukazi emanzini olwandle agelezayo, nasezixazululweni zikasawoti ezingathathi hlangothi kanye ne-alkaline. Ayizweli ikakhulukazi ku-hydrochloric kanye ne-hydrofluoric acid lapho i-de-aerated, futhi ibonisa ukumelana okuhle ne-sulfuric acid ngaphansi kwezimo ezinciphisa. Kusevisi ye-hydrofluoric acid, i-Monel ivame ukukhethwa ngenxa yokuthi ukumelana kwayo kunzima ukufanisa nezinsimbi ezingenasici noma i-titanium. Umkhawulo ubaluleke ngokulinganayo: ukungenisa umoya kwandisa amazinga okugqwala kulawa ma-acids, futhi usawoti we-oxidizing acid njenge-ferric chloride abangela ukumelana okubuthakathaka. I-Monel ayiyona ingxubevange “ye-acid-proof” yenhloso evamile; inzuzo yayo igxile ezindaweni ezincishisiwe nezingezona oxidizing.

Lokhu kuziphatha okuqondile okumaphakathi yingakho ingxenye ye-Monel alloy kungafanele neze icaciswe ngesisekelo "sokumelana nokugqwala" kuphela. Isinqumo sokuthenga sidinga i-medium, i-concentration, izinga lokushisa lokusebenza, nesimo sokungenisa umoya. Ngaphandle kwalokho, ukukhethwa kwezinto akuphelele.

Ukuziphatha kwemishini nokomzimba okuhambisana nezingxenye

I-Monel 400 ihlanganisa amandla amaphakathi ukuya phezulu kanye ne-ductility enhle kanye nokuqina. Igcina izakhiwo eziwusizo zemishini ukusuka emazingeni okushisa angaphansi kukaziro kufika cishe ku-480°C emoyeni, okungaphezu kwalokho ukukala kuba umkhawulo. Ukuminyana kwe-Monel 400 cishe ku-8.8 g/cm³, ukuqhutshwa kwe-thermal cishe ku-21.8 W/m·K, futhi ingxubevange inozibuthe kancane kuzinga lokushisa legumbi nezinga lokushisa le-Curie ebangeni lika-20°C kuya ku-50°C. Lawa magugu aphathekayo abalulekile ngokwengxenye yokwakheka: ukuminyana kuthinta isisindo kanye ne-inertia ezingxenyeni ezijikelezayo; i-conductivity eshisayo ithinta ukudluliswa kokushisa ezingxenyeni ze-exchanger kanye nokukhiqizwa kokushisa ngesikhathi somshini; I-magnetism encane ibalulekile kumathuluzi nasezintweni lapho amandla kazibuthe alawulwa khona.

I-Monel K-500 yakhela phezu kwesisekelo sokugqwala esifanayo kodwa iletha amandla aphezulu kakhulu ngemva kokuguga. Ihlala ingenawo uzibuthe ukuya cishe ku-−101°C (−150°F), okuyinzuzo kwezinye izingxenye ze-downhole nezenzwa. Ukuhweba ukuthi ukwelashwa kokuguga kunezela izinyathelo zenqubo futhi kudinga ukulawulwa kwesithando somlilo; ingxenye ye-K-500 ayiyona nje ingxenye ye-Monel 400 enelebula ehlukile.

Ukusebenza kanzima kanye nemiphumela yako

Ama-alloys e-Monel asebenza kanzima ngokushesha ngesikhathi sokusika kanye nokwakhiwa okubandayo. Ekwenzeni imishini, ungqimba olungaphezulu luyaqina ngokushesha ngaphambi nangemuva konqenqema lokusika, okuphakamisa amandla okusika, kusheshise ukuguga kwamathuluzi, futhi kungaholela onqenqemeni olwakhiwe kanye nokuqedwa kahle kwendawo uma umsebenzi ungalawulwa. Lokhu akulona iphutha lempahla; kuyisici esilolonga uhlelo lokukhiqiza. Kuyisizathu futhi isizathu sokuthi ukwenziwa kwe-Monel alloy machining kuvame ukusondela ngamathuluzi abukhali, ijiyomethri ekhangayo, namapharamitha okusika agwema ukuhlala lapho usike khona.

Kubathengi bengxenye, ukuthambekela kokuqina komsebenzi kunomphumela oqondile wokuthenga. Isitolo esiphatha i-Monel njengensimbi engagqwali engu-316 cishe sizozabalaza nempilo yamathuluzi, ukungaguquguquki kobukhulu, kanye nobuqotho bomhlaba. Ngakho-ke indlela yokwenza imishini yomphakeli iyingxenye yalokho okufanele kuhlolwe, hhayi ukucabangela kamuva.

Izinqubo Zokukhiqiza Zezingxenye Ze-Monel Alloy

Izingxenye ze-Monel alloy zikhiqizwa ngezindlela ezine eziyinhloko: ukubunjwa, ukukhanda, ukubumba, nokubumba / ukushisela. Ukulingisa nokwenza imishini kubusa indawo yokwenza ingxenye, futhi kuphathwa lapha ngaleyo ndlela.

Iyasakaza

Ukusakaza kusetshenziswa lapho ingxenye yejiyomethri iyinkimbinkimbi, lapho kudingeka amaphaseji angaphakathi noma izici ezinezintambo, noma lapho kukhiqizwa umumo oseduze nenethi kunciphisa udoti wezinto ezibonakalayo kanye nomshini olandelayo. Ukubunjwa kwesihlabathi, ukufakwa kwe-investimenti, kanye nokusakazwa kwe-centrifugal konke kusetshenziswa kuma-alloys e-nickel-copper.

I-Casting Monel yethula izinselele zenqubo okumele i-Foundry ilawule. Ingxubevange inobubanzi obuphezulu bokuncibilika, obungaba ngu-1,300°C kuya ku-1,350°C, futhi ijwayele ukumuncwa igesi kanye nokuncipha kwe-porosity uma isango nokukhuphuka kungaklanyelwe ngendlela efanele. Ukuthela ukulawulwa kwezinga lokushisa, ukubola kwesikhunta, kanye nokuzijwayeza ukondla konke kuthinta ukuzwakala. Lezi yizinkinga ze-Foundry-process, kodwa ziba inkinga yomthengi lapho ukusakaza kucacisiwe ngaphandle kwemfuneko yomsindo. Ukuthenga okuphonswayo kufanele kuchaze indlela yokwamukela i-porosity kanye nendlela yokuhlola, hhayi nje ibanga le-alloy.

Izingxenye zokuphonsa i-nickel alloy zesevisi ye-Monel ngokuvamile zihlanganisa imizimba yephampu, imizimba yama-valve, ama-impeller, nokufakwayo. Okuhlangenwe nakho kwe-Foundry ngama-alloys e-nickel-copper kuwumbandela wokufaneleka ozuzisa kakhulu kunokuhlangenwe nakho kokusakaza okusansimbi okujwayelekile, ngoba ukuqina nokuziphatha kwegesi kuyahluka.

Ukwenza imishini

Amakhava omshini aphendukile, agayiwe, abhoboziwe, kanye nezici ezinentambo, futhi iwumzila ozenzakalelayo wezingxenye ezikhiqizwe kusuka kubha, ipuleti, noma ama-forging: ama-shaft, amabhawodi, ama-flange, iziqu zamavalvu, nezixhumi. Monel 400 machining kwenziwa kabanzi kodwa kudinga inhlonipho ngokuziphatha kokuqina kwengxubevange kanye nokuthambekela kwayo kokukhiqiza ukushisa endaweni yokusika.

Imithetho esebenzayo yokwenza imishini ye-Monel iyahambisana kuyo yonke imithombo yobuchwepheshe: sebenzisa amathuluzi abukhali, a-positive-rake; gcina ukudla okwanele nokujula kokusika ukuze ungene ngaphansi kongqimba oluqinile lomsebenzi; gwema ukukhuhla noma ukuhlala; futhi uhlele ukukhwabanisa nokuqeda ukuze indawo eqediwe ingashiywa nesendlalelo esonakele. Amathuluzi e-Carbide ajwayelekile, futhi amathuluzi e-ceramic noma e-PCBN asetshenziswa kwezinye izinto lapho umshini nokusetha kuqinile ngokwanele. Uma ingxenye ye-Monel idinga ukubekezelelana okuqinile kanye nokuqedwa okuhle kwendawo, ukulandelana komshini kungase kuhlanganise isinyathelo sokukhulula ingcindezi phakathi kokumahhadla nokuqeda ukuze kulawulwe ukuhlanekezela.

Izingxenye zemishini ye-nickel alloy ku-Monel ngakho-ke ziyahluka ezingxenyeni zensimbi engagqwali ngesikhathi somjikelezo kanye nezindleko zamathuluzi, noma ngabe i-geometry ifana. Umphakeli okuqondayo lokhu uzocaphuna futhi ahlele ngokufanele; umphakeli ongeke alethe izingxenye ezinobukhulu obungahambisani noma ubuqotho bomhlaba.

Ukuqamba kanye nokwakha

I-Forging isetshenziselwa izingxenye ezidinga ukugeleza okusanhlamvu okuqondiswayo kanye nezakhiwo ezithuthukisiwe zemishini, njengama-shafts, imizimba ye-valve, kanye nezixhumi ezinobuqotho obuphezulu. Isitoko se-Monel 400 sokuqamba simbozwe ngamazinga afana ne-ASTM B564, futhi ama-forging ngemuva kwalokho angashintshwa abe yizilinganiso zokugcina. Ukwakhiwa kanye nokushisela kuyafaneleka ezingxenyeni ezisekelwe ku-plate-based, ama-tube asembling, kanye nokwakhiwa okushiselwe. I-Monel 400 inokushisela okuhle ngezinqubo ezivamile, ngokukhethwa kwensimbi yokugcwalisa nokuhlanzeka kuyizilawuli eziyinhloko; Ukwelashwa kokushisa kwangemva kokushisela akudingekile njalo ekumelaneni nokugqwala, nakuba ukukhululeka kwengcindezi kungase kucaciswe ukuze kube nokuzinza kobukhulu.

Ezingxenyeni eziningi zangokwezifiso ze-Monel, umzila wokukhiqiza awuyona inqubo eyodwa kodwa uyiketango. I-cast fum house ingase yenziwe ngomshini ebusweni bayo be-flange futhi ibhoboze; umphini okhonjiwe ungase uphendulwe, ucushwe, futhi ugaywe. Ngakho-ke ukukhiqizwa kwengxenye ye-Monel kuhilela izinqumo esinyathelweni ngasinye, futhi imininingwane yokuthenga kufanele icacise ukuthi yiziphi izinyathelo eziwumthwalo womphakeli.

I-Monel Alloy Casting vs. Machining: Isetshenziswa Nini Ngayinye

Ukukhetha phakathi kokusakazwa nomshini wengxenye ye-Monel alloy kuqhutshwa ijometri, ubuningi, ukubekezelelana, kanye nezimfuneko zokuhlola, hhayi ngokuncamela inqubo eyodwa phezu kwenye. Yomibili imizila isemthethweni, futhi yomibili ingakhiqiza izingxenye ezihlangabezana nokucaciswa kwezinto ezifanayo.

Ukusakaza kuyindlela efanelekile lapho ingxenye inomumo wangaphandle oyinkimbinkimbi noma amaphaseji angaphakathi angadinga ukwenziwa kwemishini okuqinile kusuka kokuqinile, lapho inani lithethelela izindleko zamathuluzi nezephethini, noma lapho umumo oseduze nenethi unciphisa inani lezindleko zento esebenzayo nomshini. I-pump volute, umzimba wevalvu onomzila ogelezayo ohlukumezayo, noma i-impeller enamavanes agobile kuwukubukisa kwemvelo. Umzila wokulingisa uhambisa ubunkimbinkimbi bejiyomethri ekubunjweni, lapho buphindwa khona ngokomnotho kuwo wonke umsebenzi wokukhiqiza.

Ukucupha kusuka kubha, ipuleti, noma ukufoja kuyindlela efanelekile uma ingxenye ilula ngokwejometri kodwa ifuna ubukhulu, lapho inani liphansi noma idizayini isaphindwaphindwa, noma lapho izici zezinto ezibonakalayo zidingeka kwifomu elifakiwe. Ukufakwa kwe-Monel okukhiqizwe njengengxenye eyenziwe ngomshini kusuka kubha ye-hex, ibholithi ye-monel ephendulwe futhi yafakwa kusuka kubha eyindilinga, noma isiqu se-valve esakhiwe esitokweni sebha yizibonelo ezivamile. Imishini inikeza ukulawula okuqondile kokubekezelelana, ukuphela kwendawo, kanye nekhwalithi yochungechunge, futhi igwema isikhathi sokuhola samathuluzi esidingwa ukusakaza.

Izindlela ezimbili zivame ukuhlanganiswa. Ukufakwa kwe-Monel alloy kungase kucaciswe ngezibonelelo zomshini, bese kuba nesithukuthezi, kubhekane, kubhobhodwe, futhi kuthintelwe kubukhulu bokugcina. Le ndlela eyingxubevange ivamile ezingxenyeni zephampu nama-valve: i-Foundry iletha umsindo oseduze nenetha, futhi isitolo somshini sisungula ukulingana okubalulekile nokuvala izindawo. Kumthengi, ukhiye ukuchaza ukuthi iziphi izindawo ezisakazwa ngendlela efanayo nokuthi iziphi ezenziwa ngomshini, kanye nokucacisa izidingo zokuhlola kokubili.

Uhlaka lokwahlulela olusebenzayo lubheka okuguquguqukayo okune. Ubunkimbinkimbi beJiyomethri buthanda ukusakaza. Ubuningi buvuna ukusakaza uma ukusetshenziswa kwamathuluzi sekuncishisiwe, kuyilapho inani eliphansi lithanda ukwenziwa kwemishini. Izimfuneko zokubekezelela nokuqedwa kwendawo zivuna umshini wezici ezibalulekile. Futhi umzila wokuhlola owamukelekayo ubalulekile: ukulingisa kungase kudinge i-radiography noma ukuhlolwa kwangaphakathi ukuze kuzwakale umsindo wangaphakathi, kuyilapho izingxenye eziwumshini ziqinisekiswa ngobude nangobude obungaphezulu. Akukho kulokhu okuguquguqukayo kukodwa okunquma umzila; zikalwa kanyekanye.

Izingxenye ze-Custom Monel zivame ukucaciswa ngaphandle kokuthi umthengi asho inqubo ayikhethayo. Kuleso simo, isincomo senqubo yomphakeli kufanele sithathwe njengesiphakamiso sobuchwepheshe, hhayi esimisiwe. Umthengi kufanele abuze ukuthi kungani kukhethwe ukulingisa noma ukukhanda, ukuthi liyini ikhono elizwakalayo elizwakalayo noma lokubekezelela, nokuthi uhlelo lokuhlola lufana kanjani nomsebenzi wengxenye.

Izinhlobo Ezijwayelekile Zezingxenye Ze-Monel Alloy

Izingxenye ze-Monel alloy zivela emindenini eminingana esebenzayo ebonakalayo. Ithebula elingezansi libonisa izinhlobo ezijwayelekile emzileni wazo ojwayelekile wokukhiqiza, ukuthambekela kwebanga, kanye nendima yesevisi. Ikholomu yebanga ibonisa ukukhetha okukhona, hhayi umthetho okhethekile; ibanga langempela kufanele lilandele isimo sesevisi.

Izinto zokubopha zidinga ukunakwa okukhethekile ngoba ziyisigaba sengxenye yevolumu ephezulu ye-Monel. Amabhawudi e-Monel namantongomane akhiqizwa ezindinganisweni zokuqiniswa njenge-ASTM F467 kanye ne-F468 ye-nonferrous bolting, nokufakwa kwe-Monel 400 kuvame ukuthengwa ku-ASTM B366 noma imininingwane efanayo yokufaka. Lezi zimpawu ezijwayelekile zibalulekile: “Ibhawudi ye-Monel” engenakho ukubiza okujwayelekile kanye nebanga akuyona incazelo ephelele yokuthenga.

Izingxenye ze-Custom Monel kanye nezingxenye ze-Monel alloy ezi-odwe ukuthi zidwetshwe zithatha umzila ohlukile wokuthenga. Kulokhu, umdwebo uchaza i-geometry, ukubekezelelana, kanye ne-callout yezinto ezibonakalayo, futhi isibopho somphakeli ukwenza umzila wokukhiqiza kanye nohlelo lokuhlola. Umehluko phakathi kokuthenga kwengxenye evamile kanye nokuthenga kwengxenye yangokwezifiso kushintsha lokho umthengi adinga ukukucacisa: ingxenye evamile ichazwa ngenombolo yayo evamile kanye nebanga, kuyilapho ingxenye yangokwezifiso ichazwa ngomdwebo wayo, isitifiketi sempahla, nezimfuneko zokuhlolwa.

Izicelo zezimboni ze-Monel Alloy Parts

Izingxenye ze-Monel alloy zikhethwa lapho inhlanganisela yokumelana nokugqwala, amandla, nokuqina kufanelana nokuchayeka kwemboni ethile. Izinhlelo zokusebenza ezingezansi zihlelwa yisimo sesevisi esiqhuba ukukhetha kwezinto ezibonakalayo, hhayi njengohlu lwezimboni ngenxa yazo.

Ukucubungula amakhemikhali

Izinto zamakhemikhali eziphatha i-hydrofluoric acid, i-sulfuric acid ngaphansi kwezimo ezincishisiwe, kanye nokugeleza kwe-alkaline kuyindawo eyinhloko ye-Monel. Izingxenye ze-Monel 400 zivela ku-reactor yangaphakathi, kumashubhu okushintshanisa ukushisa, izingxenye zamapayipi, i-pump kanye ne-valve trim, namathuluzi olayini wokukhetha. Intambo evamile iyindawo yamakhemikhali enciphisa noma engeyona i-oxidizing lapho isisombululo esiqinile se-nickel-copper sinikeza ukuzinza okungenakuqhathaniswa nezinsimbi ezingenasici. Isexwayiso esihambisanayo sisebenza ngokulinganayo: imidiya ene-oxidizing enamandla, njenge-nitric acid noma izixazululo eziqukethe ama-ion ferric, zingaphandle kwebanga elihlosiwe le-Monel. Ngakho-ke umbuzo wokusetshenziswa kwamakhemikhali kufanele usho i-medium, ukugxilisa ingqondo, izinga lokushisa, kanye nesimo somoya, ngoba lezo ziguquguqukayo zinquma ukuthi i-Monel iyingxube efanele yini.

Isevisi yamanzi olwandle namanzi olwandle

Amaphampu amanzi olwandle, ama-valve, izinto ezishintsha ukushisa, okokufaka amapayipi, nezinto zokubopha kuphakathi kwezinto ezisetshenziswa kakhulu i-Monel 400. Ingxubevange imelana nokuqhekeka kokugqwala kwamanzi olwandle agelezayo kanye ne-chloride stress corrosion crack, futhi isetshenziselwa imiphini yepompo, ama-impeller, iziqu zamavalvu, nezingxenye zamapayipi amanzi olwandle. I-Monel K-500 inweba isisekelo sokugqwala esifanayo kumashafti nezixhumi ezinamandla lapho amandla e-Monel 400 enganele. Imvelo yasolwandle iphinde ikhombise ukuthi kungani ibanga nenqubo kumele ifaniswe: i-valve eyi-Monel 400 kanye ne-shaft yepompo ye-K-500 eyenziwe ngomshini ohlelweni olufanayo lwamanzi olwandle benza imisebenzi ehlukene yemishini nomndeni ofanayo we-alloy.

Ukukhiqizwa kwamaphampu nama-valve

Abenzi bamaphampu namavalvu bangabathengi abakhulu bezingxenye ze-Monel alloy ngoba imikhiqizo yabo ihlanganisa imidiya ebolayo kanye nokunyakaza kwemishini. Izikhwama zepompo, ama-impeller, amashafti, izindandatho zokugqoka, imizimba yamavalvu, izihlalo, iziqu, nokunquma konke kuyikhandidethi le-Monel 400 noma i-K-500 kuye ngamandla nezidingo zokugqoka. Umzila wokukhiqiza ubonisa i-geometry: ama-casings nemizimba ijwayele ukuphonsa noma ukusakaza kanye nokwenza imishini, kuyilapho ama-shaft, iziqu, kanye nokusikwa kuvame ekwenzeni imishini kusuka kubha noma ukufoja. Ngepompo noma i-valve ye-OEM, umbuzo ofanelekile awuwona nje “i-Monel noma i-stainless” kodwa iliphi ibanga le-Monel nokuthi yimuphi umzila wokukhiqiza ozoletha umngcele odingekayo, isilawuli sobukhulu, nempilo yokugqwala.

Okunye ukusetshenziswa kwezimboni

Izingxenye ze-Monel zivela futhi ezintweni zokukhiqiza uwoyela negesi, izishintshisi zokushisa zezitshalo zamandla, nasekucubunguleni ukudla nemithi lapho kudingeka khona indawo yensimbi engagqwali, ehlanzekayo. Kuwoyela negesi, i-Monel K-500 isetshenziselwa izingxenye ezingezona zikazibuthe ezifana namakholomu okubhola namathuluzi omthombo kawoyela, kanti i-Monel 400 isetshenziselwa amavalvu nokufakwa enkonzweni egqwalayo. Lezi zinhlelo zokusebenza zabelana ngendlela efanayo yokukhetha: umsebenzi ophakathi nendawo nowemishini uza kuqala, bese ibanga nenqubo ilandela. Izingxenye ze-nickel-copper alloy incazelo yolimi lwezinto zokwakha zomndeni ofanayo, futhi ilusizo lapho ukucaciswa kokuthengwa kwempahla kuhlelwa ngohlelo lwealloy kunegama lokuhweba.

Okufanele Uqinisekise Lapho Uthola Izingxenye Ze-Monel Alloy

Ukuthengwa kwengxenye ye-Monel alloy kwehluleka ngezindlela ezingabikezelwa: ibanga alicaci, izinga alikho, umzila wenqubo ushiyelwa umphakeli ngaphandle kweziqu, noma izimfuneko zokuhlolwa azishiwongo. Uhlu lokuqinisekisa olungezansi luhlelwe ngezinqumo ezithinta ukuthi ingxenye ethunyelwe iyasebenza yini.

Ibanga lezinto ezibonakalayo nezijwayelekile. I-oda lokuthenga kufanele lisho inombolo ye-UNS, hhayi igama lokuhweba kuphela. NgeMonel 400, leyo yi-UNS N04400; ye-Monel K-500, UNS N05500. Izinga lomkhiqizo elisebenzayo kufanele futhi licashunwe: isibonelo, i-ASTM B127 yepuleti, i-B164 yebha, i-B165 yeshubhu, i-B564 ye-forging, noma i-B865 yebha ye-K-500, induku, ne-forgings, kuye ngefomu lomkhiqizo kanye nebanga. Ngokulingisa, ukucaciswa kokusakaza kwe-ASTM okusebenzayo kufanele kuqinisekiswe ngokuhlukile ngaphambi kokukhishwa kwe-oda lokuthenga; izindinganiso ezibalwe ngenhla amafomu akhava enziwe kanye nebha ye-K-500/forging, hhayi ukuthengwa kwe-Monel casting okuvamile. Umdwebo othi “Monel” ngaphandle kwenombolo ye-UNS nezinga lefomu lomkhiqizo ushiya umphakeli ukuthi atolike imfuneko.

Umdwebo, ubukhulu, nokubekezelela. Ezingxenyeni ze-Monel zangokwezifiso, ukubuyekezwa komdwebo kufanele kube okwamanje, futhi ubukhulu obubalulekile, ukubekezelela, ukuphela kwendawo, kanye nokucaciswa kochungechunge kufanele kufundeke. Ngokulingisa, umdwebo kufanele uhlukanise indawo esakazwayo ezindaweni ezingomshini futhi kufanele usho izibonelelo zomshini kanye nezidingo ezisalungiswa. Ezingxenyeni zomshini, uhlelo lwe-datum kanye nendlela yokuhlola kufanele kucace.

Ukuqinisekiswa kwenqubo yokukhiqiza. Umthengi kufanele azi ukuthi umphakeli uhlose ukusakaza, umshini osuka kubha noma ukufoja, noma ukuhlanganisa kokubili. Uma kuhlongozwa ukulingisa, ulwazi lwe-nickel-copper lwe-Foundry kanye nendlela yokuhlola umsindo kufanele kuqinisekiswe. Uma kuhlongozwa umshini, indlela yomphakeli yokulawula ukuqina komsebenzi kanye nokusetshenziswa kwamathuluzi kufanele kube yingxenye yengxoxo yezobuchwepheshe. I-Monel alloy casting kanye ne-Monel alloy machining akukona okuzenzakalelayo okushintshekayo; baphethe amaphrofayili amakhono ahlukene.

Ukwelashwa kokushisa nesimo. Ku-Monel K-500, ukwelashwa kokuguga kuyisinyathelo senqubo esishiwo futhi kufanele kuqinisekiswe ngokuphikisana nezinga elisebenzayo kanye nefomu lomkhiqizo. Ku-Monel 400, isimo - esincishisiwe, esidambisa ingcindezi, noma ukusebenza kanzima - kufanele sishiwo ngoba sithinta amandla, ubukhulu, nokuziphatha komshini. Isitifiketi esibika “i-Monel K-500” ngaphandle kwesimo sokuguga asiphelele.

Ukuhlola kanye nemibhalo. Isitifiketi sokuhlolwa kwezinto ezibonakalayo esinokwakheka kwamakhemikhali kanye nezakhiwo zemishini siyisisekelo. Ngokusakazwa, umthengi angase acacise ukuhlolwa kwe-radiographic, ukungena, noma i-ultrasonic kuye ngengcindezi yengxenye noma umsebenzi wesakhiwo. Ezingxenyeni zomshini, imibiko yokuhlolwa kobukhulu kanye namarekhodi angaphezulu kuwubufakazi obuhambisanayo. Ukulandelwa kwenqwaba yokushisa kufanele kugcinwe kusukela kusitifiketi sokugaya kuze kufike engxenyeni eqediwe.

Uhlu lokuhlola oluhlanganisiwe luwusizo: ibanga lempahla kanye nenombolo ye-UNS; izinga elisebenzayo le-ASTM noma le-AMS lefomu lomkhiqizo; ukudweba ukubuyekezwa kanye nezilinganiso ezibucayi; umzila wokukhiqiza (owenziwe ngomshini, owenziwe ngomshini, noma kokubili); isimo sokwelashwa kokushisa; izidingo zokuhlolwa kanye nemibhalo; kanye nokulandeleka kwenkatho yokushisa. Ngokufakwa okujwayelekile kwe-Monel noma amabhawodi e-monel, inombolo evamile nebanga kungena esikhundleni somdwebo, kodwa izimfuneko zesitifiketi esibalulekile nokulandeleka zisekhona.

FAQ

Ingabe izingxenye ze-Monel 400 ne-Monel K-500 zingasetshenziswa ngokushintshana?
Hhayi njengokuzenzakalelayo. I-K-500 ilukhuni ngeminyaka futhi inamandla kakhulu, kuyilapho i-Monel 400 iyibanga lesixazululo esiqinile. Bahlanganyela isisekelo esimelana nokugqwala, kodwa amandla, ukwelashwa kokushisa, nokuziphatha komshini kuyehluka. Ukushintshwa kufanele kuhlolwe ngokuqhathanisa nomthwalo wangempela nesimo sesevisi, kungacatshangwa.

Ingabe izingxenye ze-Monel alloy ziyashiseka?
I-Monel 400 inokushisela okuhle ngezinqubo ze-TIG kanye ne-MIG isebenzisa insimbi yokugcwalisa i-nickel-copper ehambisanayo, ngokuhlanzeka nokulawula okokufaka ukushisa kuyizidingo eziyinhloko ezisebenzayo. Ukwelashwa kokushisa kwangemva kokushisela akudingekile ngaso sonke isikhathi ekumelaneni nokugqwala, nakuba ukukhululeka kwengcindezi kungase kucaciswe lapho kubaluleke khona ukuzinza kohlangothi. Ukufaneleka kwenqubo yokushisela kuhlala kungumthwalo womphakeli.

Umthengi ukhetha kanjani phakathi kwe-Monel nensimbi engagqwali yesevisi yamanzi olwandle?
Ukukhetha kuncike esimweni esithile samanzi olwandle kanye nomsebenzi wengxenye wemishini. I-Monel 400 ikhethwa lapho kudingeka khona ukumelana nokuqhekeka kwe-chloride stress corrosion kanye nokusebenza emanzini asolwandle agelezayo, kuyilapho izinsimbi ezingenasici zinemikhawulo ehlukene kanye namaphrofayili ezindleko. Isinqumo kufanele sisekelwe kumaphakathi, isimo sokugeleza, izinga lokushisa, namandla adingekayo, hhayi ekukhetheni okujwayelekile komndeni owodwa wengxubevange.

Ingabe "ingxenye ye-monel alloy" iyafana "nengxenye ye-Monel 400"?
Cha. Ingxenye ye-Monel alloy yitemu elibanzi lanoma iyiphi ingxenye eyenziwe kusukela kumndeni we-nickel-copper alloy. Ingxenye ye-Monel 400 iyingxenye eyenziwe ngokukhethekile nge-UNS N04400. Izingxenye ze-K-500 nazo ziyizingxenye ze-Monel alloy, kodwa azizona izingxenye ze-Monel 400.

Yiluphi ulwazi lomdwebo oludingekayo ekulingiseni kwe-Monel?
Umdwebo kufanele ubonise ijiyomethri njenge-cast, izibonelelo zomshini, ama-engeli asalungiswa, izindawo ezinomshini obalulekile, izimfuneko zokubekezelela, nezindawo kanye nemibandela yokwamukela yanoma yikuphi ukuhlola okucacisiwe okungabhubhisi. I-callout ebalulekile kufanele ifake ibanga lokusakaza kanye nenombolo ye-UNS, futhi izinga lokusakaza le-ASTM elisebenzayo kufanele liqinisekiswe ne-Foundry ngaphambi kokufakwa kwe-oda.

Yini ethinta isikhathi sokuhola sezingxenye ze-Monel alloy?
Isikhathi sokuhola sincike ebangeni, ukutholakala kwefomu lomkhiqizo, noma ngabe ithuluzi lokusakaza liyadingeka, okuqukethwe komshini, kanye nobubanzi bokuhlola. Ingxenye engomshini evela kubha yesitoko ingase ihambe ngokushesha kunephethini yokusakaza entsha kanye nokugunyaza kwe-athikili yokuqala. Umthengi kufanele acele umphakeli ukuthi asho abashayeli besikhathi sokuhola kunokucaphuna inombolo eyodwa ngaphandle kwesisekelo.

Izingxenye zengxube ye-Monel zicaciswa lapho isimo sesevisi sidinga okungaphezu kwalokho okungalethwa insimbi engagqwali evamile ngokunciphisa ama-asidi, amanzi olwandle, noma inqubo ye-alkaline. Umndeni wezinto ezibonakalayo mncane - i-nickel-copper, ene-Monel 400 ne-K-500 ehlanganisa ingxenye enkulu yezidingo - kodwa izinqumo ezizungezile azinjalo. Ukukhethwa kwebanga, umzila wokukhiqiza, ukwelashwa kokushisa, nokuhlola kwakha iketango, futhi isixhumanisi esibuthakathaka kunoma isiphi isikhathi singafaka engcupheni ingxenye eqediwe. Umthengi oletha umdwebo, inombolo ye-UNS, izinga lefomu lomkhiqizo, inqubo eshiwo okulindelekile, kanye nemfuneko yokuhlolwa engxoxweni yomhlinzeki isesimweni esiqine kakhulu kunomuntu ocela “izingxenye zeMonel” bese elinda ikhotheshini. Uma imfuneko ethile yengxenye ye-Monel alloy isichaziwe kakade, isinyathelo esilandelayo ukuhlela lezo zakhi ezinhlanu bese ucela impendulo yobuchwepheshe neyokuhweba ngokumelene nazo.