wabelane ngemiphumela yocwaningo oluningiliziwe olwenziwe yinkampani oluqhathanisa imigoqo eqinile ye-Inconel 625 nemigoqo emisha ye-Sanicro 60 engenalutho.
I-Inconel 625 yezinga lokuncintisana (inombolo ye-UNS N06625) iyi-superalloy esekelwe ku-nickel (i-superalloy engamelani nokushisa) esetshenziswe embonini yasolwandle, yenuzi nakwezinye izimboni kusukela ekuthuthukisweni kwayo kokuqala ngawo-1960 ngenxa yezakhiwo zayo zamandla aphezulu kanye nokumelana namazinga okushisa aphezulu. Inesivikelo esandisiwe ekugqwaleni nasekungcoleni.
I-Challenger entsha iyinhlobo ye-hollow-rod ye-Sanicro 60 (eyaziwa nangokuthi i-Alloy 625). I-hollow core entsha ye-Sandvik yenzelwe ukunikeza ukusebenza okungcono ezindaweni ezithile ezihlalwa yi-Inconel 625, eyenziwe nge-alloy ye-nickel-chromium enamandla amakhulu engamelana namazinga okushisa aphezulu kakhulu ezindaweni eziqukethe i-chlorine. Imelana nokugqwala kwe-intergranular kanye nokugqwala kwe-stress, ine-Pitting Resistance Equivalency (PRE) engaphezu kuka-48.
Inhloso yalolu cwaningo kwakuwukuhlola ngokuphelele nokuqhathanisa ukusebenza kahle kwe-Sanicro 60 (ububanzi = 72 mm) ne-Inconel 625 (ububanzi = 77 mm). Izindlela zokuhlola impilo yamathuluzi, ikhwalithi yobuso kanye nokulawula ama-chip. Yini ezogqama: iresiphi entsha yebha engenalutho noma ibha yonke yendabuko?
Uhlelo lokuhlola eSandvik Coromant eMilan, e-Italy luqukethe izingxenye ezintathu: ukujika, ukubhoboza kanye nokuthepha.
Isikhungo Sokushintshwa Kwemishini Esivundlile se-MCM (HMC) sisetshenziselwa ukuhlola ukubhoboza nokuthepha. Imisebenzi yokujika izokwenziwa ku-Mazak Integrex Mach 2 kusetshenziswa izibambo ze-Capto ezine-coolant yangaphakathi.
Ukuphila kwamathuluzi kwahlolwa ngokuhlola ukuguguleka kwamathuluzi ngesivinini sokusika esisukela ku-60 kuya ku-125 m/min kusetshenziswa ibanga le-alloy le-S05F elifanele ukuqeda kancane kanye nokugoqa. Ukuze kulinganiswe ukusebenza kokuhlolwa ngakunye, ukususwa kwezinto ngesivinini sokusika kwalinganiswa ngezindlela ezintathu eziyinhloko:
Njengesinye isilinganiso sokusebenza kahle kwemishini, ukwakheka kwe-chip kuyahlolwa futhi kuqashwe. Abahloli bahlola ukukhiqizwa kwe-chip kokufakwa kwe-geometries ehlukahlukene (i-Mazak Integrex 2 esetshenziswa ne-PCLNL holder kanye ne-CNMG120412SM S05F turning insert) ngesivinini sokusika esingu-65 m/min.
Ikhwalithi yendawo ihlulelwa ngokwemigomo eqinile: ubulukhuni bendawo yokusebenza akufanele budlule u-Ra = 3.2 µm, u-Rz = 20 µm. Kufanele futhi zingabi nokudlidliza, ukuguguleka, noma imiphetho eyakhiwe (i-BUE – ukwakheka kwezinto ezisetshenziswayo kumathuluzi okusika).
Ukuhlolwa kokubhoboza kwenziwa ngokusika amadiski amaningana entongeni efanayo engama-60 mm eyasetshenziswa ekuhlolweni kokujika. Umgodi ocijile wabhobozwa uhambisana ne-axis yentonga imizuzu emi-5 futhi ukuguguleka kobuso bangemuva bethuluzi kwaqoshwa ngezikhathi ezithile.
Ukuhlolwa kokucushwa kwentambo kuhlola ukufaneleka kwe-hollow Sanicro 60 kanye ne-solid Inconel 625 kule nqubo ebalulekile. Zonke izimbobo ezidalwe ekuhlolweni kokubhoboza kwangaphambilini zisetshenziswe futhi zasikwa nge-Coromant M6x1 thread tap. Eziyisithupha zafakwa esikhungweni sokugaya esivundlile se-MCM ukuze kuhlolwe izinketho ezahlukene zokucushwa kwentambo futhi kuqinisekiswe ukuthi zihlala ziqinile kulo lonke umjikelezo wokucushwa kwentambo. Ngemva kokucushwa kwentambo, kala ububanzi bomgodi ophumayo nge-caliper.
Imiphumela yokuhlolwa yayicacile: Amabha angenalutho angama-60 e-Sanicro asebenze kahle kakhulu kune-Inconel 625 eqinile ngokuphila isikhathi eside kanye nokuqedwa okungcono kwendawo. Iphinde yafanela amabha aqinile ekwakheni ama-chip, ukubhoboza, ukuthepha kanye nokuthepha futhi yenza kahle ngokulinganayo kulezi zivivinyo.
Isikhathi senkonzo yama-hollow bars ngesivinini esiphezulu side kakhulu kune-solid bars futhi side ngokuphindwe kathathu kune-solid bars ngesivinini sokusika esingu-140 m/min. Ngalesi sivinini esiphezulu, i-solid bar yahlala imizuzu emi-5 kuphela, kanti i-hollow bar yayinesikhathi sethuluzi semizuzu eyi-16.
Impilo yamathuluzi e-Sanicro 60 yahlala izinzile njengoba isivinini sokusika sanda, futhi njengoba isivinini sanda kusukela ezikhathini ezingu-70 saya ku-140 m/min, impilo yamathuluzi yehle ngo-39% kuphela. Lokhu kungukuphila kwamathuluzi okufushane ngo-86% kune-Inconel 625 ngoshintsho olufanayo lwesivinini.
Ubuso be-Sanicro 60 hollow rod blank bubushelelezi kakhulu kunobe-solid Inconel 625 rod blank. Lokhu kokubili kuqondile (ubulukhuni bomphezulu abudluli uRa = 3.2 µm, Rz = 20 µm), futhi kulinganiswa ngomphetho obonakalayo, iminonjana yokudlidliza noma umonakalo ebusweni ngenxa yokwakheka kwama-chips.
I-Sanicro 60 hollow shank yenze okufanayo ne-Inconel 625 solid shank endala ekuhlolweni kokusonta futhi yabonisa imiphumela efanayo maqondana nokuguguleka kwe-flank kanye nokwakheka kwe-chip okuphansi ngemva kokubhoboza.
Okutholakele kusekela kakhulu ukuthi izinduku ezingenalutho ziyindlela engcono kakhulu kunezinduku eziqinile. Isikhathi sokuphila kwamathuluzi side ngokuphindwe kathathu kunomncintiswano ngesivinini esikhulu sokusika. I-Sanicro 60 ayihlali isikhathi eside nje kuphela, kodwa futhi isebenza kahle kakhulu, isebenza kanzima futhi ishesha ngenkathi igcina ukuthembeka.
Njengoba sekukhona imakethe yomhlaba wonke encintisanayo ecindezela abaqhubi bemishini ukuthi babheke isikhathi eside ukutshalwa kwezimali zabo ezibonakalayo, ikhono le-Sanicro 60 lokunciphisa ukuguguleka kwamathuluzi omshini liyadingeka kulabo abafuna ukwandisa izinzuzo kanye namanani emikhiqizo ancintisanayo. Kusho lukhulu.
Umshini ngeke uhlale isikhathi eside nje kuphela futhi ukushintshashintsha kuzoncishiswa, kodwa ukusebenzisa umongo ongenalutho kungadlula yonke inqubo yokugaya, kuqede isidingo somgodi ophakathi, okungase konge isikhathi esiningi nemali.