Kuvandudza uye Technical Trend yeCeramic Inopinza Zvishandiso

Kuvandudza uye tekinoroji maitiro eceramic blade zvinhu

Mukugadzira, chishandiso chakagara chichinzi "mazino akagadzirwa nemaindasitiri", uye kucheka kwechigadzirwa chemidziyo ndechimwe chezvinhu zvakakosha zvinotaridza kushanda kwayo kwekugadzira, mutengo wekugadzira uye kugadzirisa mhando. Naizvozvo, sarudzo chaiyo yekucheka midziyo yemidziyo yakakosha, mapanga eceramic, neayo akanakisa kupisa kupisa, kupfeka kusagadzikana uye kugadzikana kwemakemikari, anoratidza zvakanakira izvo zvechinyakare maturusi hazvigone kuenderana mumunda wekucheka-kumhanya uye kucheka kwakaoma-ku-muchina zvinhu, uye iyo huru mbishi mapanga eceramic iAl uye Si. Zvinhu zvakapfuma zviri mugomba repasi zvinogona kunzi hazviperi uye hazviperi. Naizvozvo, tarisiro yekushandisa yezvishandiso zvitsva zveceramic yakakura kwazvo.

Kutanga, rudzi rwezvigadzirwa zveceramic

Kufambira mberi kwezvinhu zveceramic zvishandiso kwakanangana nekuvandudza mashandiro echinyakare chishandiso checeramic zvinhu, kukwenenzvera zviyo, chikamu chinosanganisa, kukochekera, kuvandudza sintering process uye kugadzira zvigadzirwa zvitsva, kuitira kuwana yakanyanya kupisa kuramba, kupfeka kuramba uye kuramba. Yakanakisa chipping kuita uye inogona kusangana nezvinodiwa zveyakakwira-kumhanya chaiyo machining. Henan Institute of Superhard Materials inogona kukamura zveceramic zvishandiso muzvikamu zvitatu: alumina, silicon nitride uye boron nitride (cubic boron nitride maturusi). Mumunda wekucheka simbi, alumina ceramic blades uye silicon nitride ceramic blades dzinonzi pamwe chete se ceramic blades; mune inorganic isiri-simbi zvinhu, cubic boron nitride zvinhu ndezvekirasi hombe yezvinhu zveceramic. Izvi zvinotevera maitiro emhando mitatu yemakeramiki.

(1) Alumina (Al2O3)-based ceramic: Ni, Co, W, kana zvimwe zvakadaro zvinowedzerwa sesimbi inosungirirwa kune carbide-based ceramic, uye kusimba kwekubatanidza pakati pealuminium uye carbide inogona kuvandudzwa. Iyo ine yakanaka kupfeka kuramba uye kupisa kupisa, uye yayo yakanyanya tembiricha kugadzikana kwemakemikari hakusi nyore kupindirana kana kemikari kuita nesimbi. Naizvozvo, alumina-based ceramic cutters ane yakakura kwazvo application renji, yakakodzera simbi uye simbi yakakandwa. High-speed machining of alloys ayo; nekuda kwekuvandudzwa kwekushisa kwekushisa kwekudzivirira, inogona kushandiswawo kugayo kana kuronga pasi pekukanganiswa kwekucheka mamiriro, asi haina kukodzera kugadzirisa aruminiyamu alloys, titanium alloys uye niobium alloys, kana zvisina kudaro inowanzoitika kumakemikari kupfeka.

(2) Silicon nitride (Si3N4)-based ceramic cutter: Iceramic yakagadzirwa nekuwedzera huwandu hwakakodzera hwesimbi carbide uye simbi inosimbisa agent kune silicon nitride matrix, uye kushandisa composite kusimbisa simba (inonziwo kupararira kwekusimbisa maitiro). Iyo inoratidzirwa nekuomarara kwepamusoro, kumira kwakanaka kupfeka, kunaka kwekudzivirira kupisa uye oxidation kuramba, uye kemikari inopindirana pakati pesilicon nitride nekabhoni nesimbi zvinhu idiki, uye friction factor zvakare yakaderera. Inokodzera kupedzisa, semi-kupedza, kupedzisa kana semi-kupedza.

(3) Boron nitride ceramic (cubic boron nitride cutter): kuomarara kwakanyanya, kupfeka kuramba, kunaka kupisa kupisa, kugadzikana kwakanaka kwekushisa, kunaka kwemafuta ekufambisa, kutsika kwepasi, uye diki coefficient yekuwedzera kwemutsara. Semuyenzaniso, Hualing cubic boron nitride chishandiso BN-S20 giredhi rinoshandiswa roughing simbi yakaoma, BN-H10 giredhi rinoshandiswa kumhanyisa kupedzisa simbi yakaomeswa, BN-K1 giredhi inogadziriswa yakanyanya kuoma simbi yakakandwa, BN-S30 giredhi yekumhanyisa kucheka madota Simbi yakakandwa ine hupfumi kupfuura kuisa ceramic.

Chechipiri, maitiro ezvigadzirwa zveceramic

Hunhu hwematurusi eceramic: (1) zvakanaka kupfeka kuramba; (2) kupisa kwekushisa kwepamusoro, kuoma kwakanaka kwakatsvuka; (3) kusimba kwechishandiso kwakati wandei kana kunyange kwakati wandei kupfuura maturusi echinyakare, kuderedza huwandu hwekuchinja kwechishandiso panguva yekugadziriswa, kuve nechokwadi chekuti Diki taper uye yakanyanya kurongeka yeworkpiece kuti igadzirwe; (4) kwete chete inogona kushandiswa roughing uye kupedza yakakwirira-kuomarara zvinhu, asiwo machining ane simba guru sekugaya, planing, kukanganisa kucheka uye blank roughing; (5) Kana iyo ceramic blade inochekwa, kukakavara nesimbi kuduku, kucheka hakusi nyore kusungirirwa kune blade, iyo yakagadzirwa-yakagadzirwa haisi nyore kuitika, uye kucheka kwepamusoro kunogona kuitwa.

Kana ichienzaniswa neyakaiswa simende carbide, kuiswa kweceramic kunogona kumira tembiricha yakakwira ye2000 ° C, nepo ma alloys akaomarara achipfava pa800 ° C; saka maturusi eceramic ane tembiricha yakadzikama kemikari uye anogona kutemwa nekumhanya kukuru, asi iyo yakashata ndeye ceramic kuisa. Simba uye kuoma zvakaderera uye zviri nyore kutyora. Gare gare, boron nitride ceramics (inozonzi cubic boron nitride maturusi) yakaunzwa, iyo inonyanya kushandiswa kutenderedza, kugaya, uye kufinha zvinhu zvakaomarara. Kuomarara kwecubic boron nitride cutters kwakakwira zvakanyanya kupfuura kweiyo ceramic inoiswa. Nekuda kwekuoma kwayo kwakanyanya, inonziwo superhard material ine diamond. Inowanzo shandiswa kugadzira zvinhu nekuoma kwakakwira kupfuura HRC48. Iyo ine yakanakisa tembiricha kuomarara - kusvika 2000 ° C, kunyangwe Iyo yakanyanya brittle kupfuura simende carbide blades, asi yakavandudza zvakanyanya simba rekuita uye kupwanya kuramba zvichienzaniswa nealumina ceramic maturusi. Uye zvakare, mamwe akakosha cubic boron nitride maturusi (akadai seHuachao Super Hard BN-K1 uye BN-S20) anogona kumira chip mutoro wehukasha machining uye anogona kumirisana nekukanganisa kwepakati machining uye kupedzisa. Iko kupfeka uye kucheka kupisa, aya maitiro anogona kusangana nekuomerwa kwesimbi yakaomeswa uye yakanyanya kuomarara simbi yakakandwa ine cubic boron nitride zvishandiso.