
Ama-Wear-Resistant Alloys ayikilasi lezinto eziklanyelwe ukumelana nokuwohloka kwendawo kanye nokulahlekelwa kwempahla okubangelwa ukuguga kwemishini. Lokhu kuguga kungabangelwa ukuhuzuka (ukuklwebha), ukuguguleka (umthelela wezinhlayiya), ukunamathela (ukugaya nokubamba), kanye nomthelela.
Umsebenzi wabo oyinhloko uwukwelula impilo yesevisi yemishini yezimboni, ukunciphisa isikhathi sokuphumula, nokuthuthukisa ukusebenza kahle kokusebenza ezindaweni ezinzima.
Isayensi Yokumelana Nokugqoka
Ukumelana nokugqoka akuyona impahla eyodwa efana nokuminyana; kuwukuziphatha kwesistimu eyinkimbinkimbi. Ukhiye wokumelana nokugqokwa kwempahla usekukwazini kwayo ukumelana nokuguqulwa kwepulasitiki nokuphuka. Lokhu kufezwa ngokuyinhloko ngokuthi:
Ukuqina Okuphakeme: Imelana nokungena kanye nokuhuzuka yizinhlayiya eziqinile.
Ukuqinisa Umsebenzi: Amandla okuba lukhuni futhi uqine ngaphezulu lapho uthintekile noma ucindezelwe (isb., i-Hadfield manganese steel).
Ukuqina: Imelana nokuqhekeka, ukuqhekeka, nokuphuma ngaphansi kwemithwalo enomthelela.
I-Microstructure: Ukuba khona kwama-carbides aqinile (isb., i-chromium, i-tungsten, i-vanadium carbides) efakwe ku-matrix yensimbi eqinile kuyisici esivamile.
Ama-alloy amelana nokugqokwa ngokuvamile asekelwe kunsimbi engayoni (insimbi nensimbi) noma izinsimbi ezingenayo ayoni, ngayinye yakhelwe izindlela zokuguga ezithile.
| Uhlobo lwe-alloy / Isisekelo | Izimpawu Ezisemqoka | Amabanga Ajwayelekile / Izibonelo | Izicelo Eziyinhloko |
| Izinsimbi ze-Martensitic | Ukuqina okuphezulu namandla amahle; kufinyelelwa ngokwelashwa kokushisa (ukucima nokushisa). | I-AR400, AR500, 4140, 4340 | Amabhakede ezimayini, ama-crusher liners, ama-bulldozer blades, amapuleti okugqoka. |
| Insimbi ye-Austenitic Manganese | "Hadfield Steel". Kunzima kakhulu futhi kusebenza kanzima. Lapho umthelela, ubulukhuni bayo bobuso bukhuphuka kakhulu ngenkathi umgogodla uhlala uqinile. | I-A128 Grade C, MN13, MN18 | Ama-crusher emihlathi, amaxoxo kaloliwe, ama-rock drill, amathrekhi okukhasa. |
| I-High-Chromium White Cast iron | Ukumelana ne-abrasion okukhethekile ngenxa yomthamo ophezulu we-hard chromium carbides. Kungaba brittle ngaphansi komthelela. | Ni-Hard, A532 | Amakesi ephampu anoshelelezi, amalayini okugaya, amaroli ama-pulverizer, okokusebenza kokudubula. |
| I-Carbide Composites | Akuyona ingxubevange ye-monolithic, kodwa into ebalulekile evimbela ukugqokwa. Izinhlayiya ze-tungsten carbide eziqinile ezifakwe ku-matrix yensimbi eqinile (njenge-cobalt noma i-nickel). | I-Tungsten Carbide-Composites, i-Stellite (i-Cobalt-based) | Izintambo eziqinile, amapuleti okugqoka, amathuluzi okusika, izinsimbi zokubhoboza, izihlalo zamavalvu. |
| Ama-alloys asekelwe ku-Cobalt | Ukumelana okuhle kakhulu nenhlanganisela yokugqoka, ukugqwala, namazinga okushisa aphezulu (ukuqina okubomvu). | I-Stellite, i-Haynes alloys | Ama-turbine blades, ama-valve ashisa kakhulu, amathiphu amasaha, izingxenye zenjini. |
| Ama-alloys ane-nickel | Ngokufanayo nama-alloys e-cobalt, ahlinzeka ngokugqoka okuhle nokumelana nokugqwala, okuvame ukusetshenziswa lapho i-cobalt ingafaneleki khona. | Inconel, Colmonoy | Imishini yokucubungula amakhemikhali, izingxenye ze-aerospace, ukumbondelana kokuqina. |
Lawa ma-alloys awasetshenziswa njalo ukwenza izingxenye eziphelele. Zivame ukusetshenziswa ngezindlela ezingabizi kakhulu ukuze kuvikelwe izinto eziyisisekelo:
Izingxenye Zabalingisi: Ingxenye (efana ne-pump casing) iphonswe ngokuphelele ku-alloy engagugi.
Gqoka amapuleti: Amashidi ensimbi eqinile (isb., AR400) abhowudiwe noma ashiselwe ezindaweni ezisengozini.
I-Hardfacing / Cladding: Ungqimba lwealloy olungagugi lushiselwe noma luhlanganiswe phezu kwensimbi eyisisekelo eshibhile, eqinile. Lena indlela evamile futhi eyongayo.
I-Thermal Spray: I-coating ye-alloy ifafazwa phezulu ukuze kwakhiwe ungqimba olungagugi.
Kafushane, ama-Wear-Resistant Alloys awumndeni ohlukahlukene futhi obalulekile wezinto ezakha umgogodla wemboni esindayo. Ukukhethwa kwengxubevange efanele kuncike ekuqondeni okunembile kwendlela yokuguga (ukuhuzuka, umthelela, njll.), indawo yokusebenza (okuhlanganisa izinga lokushisa nokugqwala), nokucatshangelwa kwezomnotho.