Kudzora kuita kwekukuya kwemavhiri kuburikidza nemusanganiswa granularity yeabrasives

Kukuya inzira yekugadzira iyo abrasive grinding vhiri (GS, sezvakapihwa muFig.1) inoshandiswa kubvisa zvinhu pane imwe nguva inotenderera [1]. Gumbo rekukuya rinoumbwa neabrasives, binding agent, fillers uye pores, etc. Mune iyo, abrasive inobata basa rekucheka panguva yekukuya. Kuoma, simba, fractural maitiro, geometry yeabrasive ine simba guru pakuita kwekukuya (kukuya simba, kutendeseka kwepamusoro kwechigadzirwa chakagadzirwa, nezvimwewo) chekukuya vhiri [2, 3].

Mufananidzo 1.Iyo yakajairika mavhiri ekukuya ane yakasanganiswa granularity yeabrasives.

Simba re zirconia alumina (ZA) ine granularity yeF14 ~ F30 yakaedzwa. Zvinyorwa zveAbrasive zveF16 kana F30 muGS yakagadzirwa zvakakamurwa kuva mamakisi mashanu kubva kumusoro kusvika pasi: ultrahigh (UH), yakakwirira (H), yepakati (M), yakaderera (L), uye yakanyanya kuderera (EL). Zvakaonekwa kuti Weibull kupwanya simba reF14, F16 uye F30 yeZA yaive 198.5 MPa, 308.0 MPa uye 410.6 MPa, zvichiteerana, zvichiratidza kuti simba reZA rakakura nekudzikira kweabrasive grit size. Iyo yakakura Weibull modulusmyakaratidza kusiyana kushoma pakati pezvimedu zvakaedzwa [4-6]. Themkukosha kwakadzikira nekudzikira kweabrasives grit size, zvichiratidza kuti kusiyana pakati pemabrasives akaedzwa kwakakura nekuderera kwegrit abrasive [7, 8]. Sezvo kuremara density yeabrasive inogara iripo, madiki mabrasives ane yakaderera huwandu hwekuremara uye yakakwirira simba, izvo zvinoita kuti iyo yakatsetseka abrasives yaive yakaoma kutyora.

Fig.2. Iyo Weibull hunhu kushushikanas₀uye Weibull modulusmkune akasiyana granularities eZA.

Iyo abrasive comprehensive wear model yehutano hwakanaka hwekushandira yakagadzirwa [9], sezvinoratidzwa mumufananidzo 3. Pasi pemamiriro ezvinhu akanaka, abrasive ine kushandiswa kwepamusoro uye GS inoratidza kushanda kwakanaka kwekugaya [3]. Pasi pemutoro wakapihwa wekukuya uye simba remumiririri, nzira huru dzekupfeka dzakashandurwa kubva pakupfeka uye diki-facture yeF16 kusvika pakupfeka uye kudhonzerwa kunze kweF30 ine mutsauko mukupwanya simba [10,11]. Kupfeka kwacho kwakakonzera GS kushatisa uye kuzvirodza kunokonzerwa neabrasive kudhonzwa-kunze kunogona kuwana yakaenzana mamiriro, nekudaro ichisimudzira kugaya zvakanyanya [9]. Kuti uwedzere kuvandudzwa kweGS, iyo abrasive kupwanya simba, inosunga mumiriri simba uye mutoro wekukuya, pamwe nekupfeka maevolutions eabrasives, anofanirwa kugadziridzwa uye kudzorwa kukurudzira abrasives utilization rate.

Fig.3.Iyo yakanakira sevhisi maitiro eabrasive

Kunyangwe kuita kwekugaya kweGS kunopesvedzerwa nezvinhu zvakawanda, senge abrasive kupwanya simba, kusunga simba remumiririri, kukuya mutoro, abrasive kucheka mafambiro, kugaya mamiriro, nezvimwewo, kuferefetwa kwemaitiro ekudzora emusanganiswa granularities yeabrasives inogona kupa huru referensi pakugadzira uye kugadzira kweGS.

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