Carbide blade kupfeka uye edge chipping zvinhu zvakajairika. Kana iyo carbide blade inopfeka, inokanganisa iyo workpiece kugadzirisa iko kurongeka, kugadzirwa kwakanaka, workpiece mhando, nezvimwe; apo mushandisi anocherechedza kupfeka kweblade, anofanira kukurumidza kupindura dambudziko racho. Iyo machining maitiro anonyatso kuongororwa kuti aone zvikonzero zvekupfeka blade. Inogona kuongororwa kubva pane zvinotevera:
1. Flank surface kupfeka
Kupfeka kweFlank kunoreva kurasikirwa kwechishandiso pazasi pekucheka kweiyo carbide kupinza uye pakarepo padyo nayo; iyo carbide particles mu workpiece material kana basa-rakaoma zvinhu zvinokwesha pamusoro pekuisa, uye zvidimbu zvidiki zveCoating peeling uye blade friction; iyo cobalt element iri mucarbide blade inopedzisira yatsemuka kubva kune crystal lattice, ichideredza kunamatira kwecarbide uye kuita kuti ipepere.
Nzira yekusarudza zvipfeko zveflank? Iko kune yunifomu inopfeka padivi pekucheka, uye dzimwe nguva peeling workpiece inonamatira kumucheto wekucheka, zvichiita kuti nzvimbo yakasakara iite seyakakura kupfuura nzvimbo chaiyo; mamwe ma alloy blades anooneka matema mushure mekupfeka, uye mamwe mablades anoonekwa achipenya mushure mekupfeka. Bright; dema ndiyo yakadzika pasi kana chigadziko cheblade chinoratidzwa mushure mekuputirwa kwepamusoro.
Countermeasures zvinosanganisira: kutanga kutarisa kumhanya kwekucheka, kudzokorora kumhanya kwekutenderera kuti ive nechokwadi chekururama kwayo, uye kuderedza kukurumidza kwekucheka pasina kuchinja chikafu;
Zvokudya: Wedzera chikafu pazino (chikafu chinofanira kunge chakakwirira zvakakwana kuti udzivise kupfeka kwakachena kunokonzerwa nediki simbi chip ukobvu);
Blade zvinhu: Shandisa zvakanyanya kusagadzika blade zvinhu. Kana uri kushandisa blade isina kuvharwa, shandisa blade yakavharwa panzvimbo; tarisa iyo blade geometry kuti uone kana yakagadziriswa pane inoenderana inocheka musoro.
2. Mupendero wakaputsika
Flank chipping chiitiko chinokonzeresa kutadza kupinza kana zvimedu zvidiki zvekucheka zvakabviswa pane kuvharwa nekupfeka kweflank. Flank chipping inoitika kana paine shanduko mumitoro yekukanganisa, senge mukukanganisa kucheka. Flank chipping inowanzova mhedzisiro yekusagadzikana kwemamiriro ekushanda, senge kana chishandiso chakareba kana kuti workpiece isina kutsigirwa zvakakwana; chechipiri kucheka machipisi kunogona zvakare kukonzera chipping. Countermeasures zvinosanganisira: kuderedza chishandiso protrusion kureba kusvika kushoma kukosha kwayo; kusarudza chishandiso chine kona yakakura yekuyamura; kushandisa chishandiso chine denderedzwa kana chamfered edge; kusarudza chinhu chakasimba chekucheka-kumucheto kwechishandiso; kuderedza kukurumidza kwekudya; Kuwedzera kugadzikana kwemaitiro; kunatsiridza chip kubvisa maitiro uye zvimwe zvakawanda zvinhu. Rake face spalling: Zvishandiso zvinonamira zvinogona kukonzera kudzokororwa kwezvinhu mushure mekucheka, izvo zvinogona kuwedzera kupfuura kona yekuyamura yechishandiso uye kugadzira kupokana pakati pechishandiso cheflank pamusoro uye workpiece; kukakavara kunogona kukonzera kukwenenzverwa mhedzisiro iyo inogona Iyo inotungamira kune basa kuoma kweiyo workpiece; zvichawedzera kuonana pakati turusi uye workpiece, izvo zvichaita kuti kupisa kukonzera chokupisa kuwedzera, zvichiita reke chiso kuwedzera, zvichiguma rake chiso chipping.
Countermeasures zvinosanganisira: kuwedzera rake angle yechishandiso; kuderedza kumucheto kutenderera ukuru kana kuwedzera simba rekumucheto; uye kusarudza zvinhu zvine kusimba kwakanaka.
3. Nzvimbo kumucheto pane rake blade
Paunenge uchigadzira mamwe ma workpiece zvinhu, raki mupendero unogona kuitika pakati pe chip nekucheka kumucheto; muganhu wakavakwa unoitika apo chidimbu chinoramba chiripo che workpiece material yakasvibiswa kusvika kumucheto wekucheka. Iyo yakavakirwa-kumusoro kumucheto chimiro chinoshanduka chinocheka Iyo yakachekwa pamusoro peiyo yakavakirwa-yakagadziriswa inoramba ichibvisa uye kubatanidza panguva yekuita. Mupendero wepamberi unowanzoitikawo pane dzimwe nguva pakudziya kwakadzika uye kunonoka kucheka kumhanya; kumhanya chaiko kwemupendero wepamberi kunoenderana nezvinhu zviri kugadziriswa. Kana basa-rakaomeswa zvinhu zvakagadziriswa, senge austenitic Kana muviri wakagadzirwa nesimbi isina tsvina, ipapo iyo reki nzvimbo mupendero inogona kukonzera kukurumidza kuunganidza pakadzika kwekucheka, zvichikonzera kutadza kwechipiri nzira yekukuvadza pakudzika kwekucheka.
Countermeasures zvinosanganisira: kuwedzera pamusoro pekucheka kukurumidza; kuve nechokwadi chekushandisa kwakaringana kweanotonhorera; uye kusarudza maturusi ane physical vapor deposition (PVD) coating.
4. Yakavakwa-mupendero pamucheka weflank
Inogonawo kuitika padivi pepamusoro pazasi pekucheka kwechishandiso. Paunenge uchicheka aluminium yakapfava, mhangura, plastiki, uye zvimwe zvinhu, flank edge inokonzerwawo nekusakwana clearance pakati pechishandiso nechishandiso; panguva imwe chete, flank kumucheto Nodules akabatana akasiyana workpiece zvinhu. Imwe neimwe workpiece zvinhu zvinoda huwandu hwakakwana hwekubvumidzwa. Zvimwe zvekushandisa, zvakaita sealuminium, mhangura, uye mapurasitiki, anozodzoka mushure mekucheka; spring back inogona kukonzera kukakavara pakati pechishandiso uye workpiece, izvo zvinozoita kuti zvimwe zvekugadzirisa zvibatane. Iyo yekucheka-kumucheto flank.
Countermeasures inosanganisira: kuwedzera iyo huru yekuyamura kona yechishandiso; kuwedzera kukurumidza kwekudya; uye kuderedza kumucheto kutenderera kunoshandiswa kumucheto pretreatment.
5. Thermal cracks
Kuputika kwekushisa kunokonzerwa nekushanduka kwakanyanya kwekushisa; kana machining kunosanganisira kucheka kunopindirana sekugaya, kucheka kumucheto kuchapinda uye kubuda iyo workpiece zvinhu kakawanda; izvi zvichawedzera nekudzikisira kupisa kunoitwa nechishandiso, uye kudzokororwa kushanduka kwetembiricha kunokonzeresa kuwedzera nekumisikidza kwematurusi epamusoro peturu pazvinopisa panguva yekucheka uye kutonhora pasi pakati pekucheka; kana chinotonhodza chikasaiswa nemazvo, chinotonhodza chinogona kukonzera shanduko huru yetembiricha, kukurumidza kupisa kupisa, uye Inoita kuti chishandiso chikunde nekukurumidza. Tembiricha inoita basa rakakosha muhupenyu hwechishandiso uye kutadza kwemidziyo; Thermal cracks chiratidzo chekutsemuka pane rake uye mativi emativi ekucheka. Nhungamiro yavo iri pamakona akarurama kusvika kumucheto wekucheka. Kutsemuka kunotanga kubva panzvimbo inopisa kwazvo pane reki, kazhinji kure nekucheka. Pane chinhambwe chidiki pakati pemipendero, uye chobva chawedzera kune reki kumeso uye kumusoro pachiso cheflank; iwo anopisa anotsemuka pachiso cherake uye cheflank chiso anozopedzisira abatana, zvichikonzera kupfava kwechiso chedivi chekucheka.
Countermeasures zvinosanganisira: kusarudza kucheka zvinhu zvine tantalum carbide (TAC) base zvinhu; kushandisa coolant nemazvo kana kusaishandisa; kusarudza zvakaomarara zvekucheka-kumucheto zvinhu, nezvimwe.
