Ukulawula ukusebenza kokusila kwamavili okusila ngokuxutywa kwegranularity ye-abrasives

Ukugaya yinkqubo yomatshini apho ivili lokusila elibukhali (GS, njengoko linikwe kwiFig.1) lisetyenziselwa ukususa izinto ngesantya esithile esijikelezayo [1]. Ivili lokugaya liqulunqwe ngama-abrasives, i-agent agent, i-fillers kunye ne-pores, njl. Apho, i-abrasive idlala indima yokusika ngexesha lokugaya. Ukuqina, amandla, ukuziphatha kwe-fractural, i-geometry ye-abrasive inefuthe elibalulekileyo ekusebenzeni kokusila (umthamo wokugaya, ukunyaniseka komphezulu womsebenzi owenziwe ngomatshini, njl.) yevili lokugaya [2, 3].

Umzobo 1.Amavili okusila aqhelekileyo anegranularity exubeneyo yeebrasives.

Amandla e-zirconia alumina (ZA) kunye ne-granularity ye-F14 ~ F30 yavavanywa. Imixholo ye-abrasive ye-F16 okanye i-F30 kwi-GS elungiselelwe yahlulahlulwe yaba ngamabakala amahlanu ukusuka phezulu ukuya phezulu: i-ultrahigh (UH), ephezulu (H), ephakathi (M), ephantsi (L), kunye nephantsi kakhulu (EL). Kwafunyaniswa ukuba amandla okutyumza i-Weibull ye-F14, i-F16 kunye ne-F30 ye-ZA yayiyi-198.5 MPa, i-308.0 MPa kunye ne-410.6 MPa, ngokulandelanayo, ebonisa ukuba amandla e-ZA akhula kunye nokuncipha kobukhulu begrit abrasive. I-Weibull modulus enkulumibonise ukungafani okuncinci phakathi kwamaqhekeza avavanyiweyo [4-6]. Imixabiso lehlile ngokuncipha kobukhulu begrit ye-abrasives, ebonisa ukuba iyantlukwano phakathi kwe-abrasives evavanyiweyo ibe nkulu ngokuhla kwegrit e-abrasive [7, 8]. Ekubeni ukuxinana kweziphene ze-abrasive zihlala zihlala, ii-abrasives ezincinci zinemilinganiselo ephantsi yeziphene kunye namandla aphezulu, ngaloo ndlela zenza ukuba ii-abrasives ezicolekileyo kube nzima ukuziqhawula.

Ikhiwane.2. Uxinzelelo lweempawu ze-Weibulls₀kunye ne-Weibull modulusmngenxa granularities ezahlukeneyo ZA.

Imodeli yokugqoka ebanzi ye-abrasive yenkqubo efanelekileyo yokukhonza yaphuhliswa [9], njengoko kuboniswe kumfanekiso 3. Ngaphantsi kweemeko ezifanelekileyo, i-abrasive inezinga eliphezulu lokusetyenziswa kwaye i-GS ibonisa ukusebenza kakuhle kokugaya [3]. Ngaphantsi komthwalo onikiweyo wokusila kunye namandla e-arhente ebophelelayo, iindlela eziphambili zokunxiba zatshintshwa ukusuka kwi-attrition wear kunye ne-micro-facture ye-F16 ukuya kwi-attrition wear kunye nokutsalwa ngaphandle kwe-F30 yokuba ngumahluko kumandla okutyumza abrasive [10,11]. Ukunxitywa kwe-attrition kubangele ukuthotywa kwe-GS kunye nokuzilola ngokwakho okubangelwa ukutsalwa kwe-abrasive-out kunokufikelela kwimo elinganayo, ngaloo ndlela kukhuthazwa amandla okusila ngokubonakalayo [9]. Ukuqhubela phambili uphuhliso lwe-GS, amandla okutyumza abrasive, amandla e-arhente ebophelelayo kunye nomthwalo wokusila, kunye neendlela zokugqoka ii-evolutions ze-abrasives, kufuneka zilungiswe kwaye zilawulwe ukukhuthaza izinga lokusetyenziswa kwe-abrasives.

Ikhiwane.3.Inkqubo efanelekileyo yonikezelo lwe-abrasive

Nangona ukusebenza kokusila kwe-GS kuphenjelelwa zizinto ezininzi, njengamandla okutyumza abrasive, amandla e-ejenti ebophelelayo, umthwalo wokusila, iziphambeko zokusika, iimeko zokugaya, njl., uphando lweendlela zokulawula umxube we-granularities of abrasives unokubonelela ngereferensi enkulu malunga noyilo kunye nokuveliswa kwe-GS.

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