Zvishandiso zvekucheka makabhidhidhi zvine simende, kunyanya zvishandiso zvemakabhidhidhi zvine simende, ndizvo zvinonyanya kushandiswa muzvishandiso zveCNC. Kubva kuma1980, mhando dzakasiyana dzezvishandiso zvemakabhidhidhidhi zvine simende kana kuti zvinoiswa muzvikamu zvakasiyana-siyana zvezvishandiso zvekucheka. Pakati peizvi, zvishandiso zvemakabhidhidhidhi zvine simende zvinogona kushandiswa zvakashanduka kubva pazvishandiso zviri nyore zvekutenderedza uye zvekucheka zviso kuti zvive nezvishandiso zvakasiyana-siyana zvakanyatsonaka, zvakaoma, uye zvinoumba.
(1) Mhando dzezvishandiso zveCarbide zvine simende
Zvichienderana nemakemikari adzo makuru, macarbide akasimwa anogona kuiswa muzvikamu zviviri zvikuru: macarbide akasimwa akavakirwa patungsten carbide uye macarbide akasimwa akavakirwa patitanium carbonitride (TiC(N)).
Makabhoidhi akagadzirwa nesimbi akavakirwa paTungsten carbide ane mhando nhatu:
Tungsten-cobalt (YG)
Tungsten-cobalt-titanium (YT)
Avo vane macarbide asingawanzo kuwanikwa (YW) akawedzerwa
Rudzi rumwe nerumwe rune zvarunobatsira nezvarunokanganisa. Zvikamu zvikuru i tungsten carbide (WC), titanium carbide (TiC), tantalum carbide (TaC), niobium carbide (NbC), nezvimwe, cobalt (Co) ndiyo inonyanya kushandiswa kugadzira simbi.
MaCarbide ane simende akagadzirwa neTitanium carbonitride anonyanya kuumbwa neTiC, ane mamwe marudzi anosanganisira mamwe maCarbide kana nitrides. Masimbi anoshandiswa zvakanyanya ndee molybdenum (Mo) uye nickel (Ni).
Sangano reInternational Organisation for Standardization (ISO) rinoisa makabhohaidhiretsi akagadzirwa nesimbi muzvikamu zvitatu:
Kirasi K (K10 kusvika K40): Yakaenzana nekirasi yeYG yekuChina (kunyanya WC-Co).
Kirasi yeP (P01 kusvika P50): Yakaenzana nekirasi yeYT yekuChina (kunyanya WC-TiC-Co).
Kirasi M (M10 kusvika M40): Yakaenzana nekirasi yeYW yekuChina (kunyanya WC-TiC-TaC(NbC)-Co).
Giredhi rega rega rinoratidzwa nenhamba dzinotangira pa01 kusvika pa50, dzinomiririra mhando dzakasiyana dzema alloys kubva pakuoma kwakanyanya kusvika pakusimba kwakanyanya.
(2) Hunhu hweMashandiro eZvishandiso zveCarbide Zvakasimwa
① Kuoma Kwakanyanya
Zvishandiso zvecarbide yakagadzirwa nesimbi inogadzirwa kuburikidza nesimbi yeupfu, ichibatanidza macarbide ane kuomarara kwakanyanya uye nzvimbo dzekunyunguduka (dzinonzi chikamu chakaoma) nesimbi dzinosunga (dzinonzi chikamu chekubatanidza). Kuomarara kwavo kunobva pa89 kusvika 93 HRA, kupfuura kure kwesimbi inomhanya zvikuru. Pa540°C, kuomarara kwavo kunoramba kuri pakati pe82 ne87 HRA, kwakafanana nekuomarara kwemukamuri kwesimbi inomhanya zvikuru (83–86 HRA). Kuomarara kwecarbide yakagadzirwa nesimbi kunosiyana zvichienderana nerudzi, huwandu, uye saizi yetsanga yemacarbides, pamwe nezviri mukati mechikamu chekubatanidza chesimbi. Kazhinji, kuomarara kunoderera sezvo huwandu hwechikamu chesimbi inobatanidza huchiwedzera. Kune huwandu hwakafanana hwechikamu chekubatanidza, maYT alloys anoratidza kuomarara kwakanyanya kupfuura maYG alloys, uye maalloys ane TaC kana NbC yakawedzerwa anopa kuomarara kwakanyanya kwekupisa kwakanyanya.
② Simba Rinokombama uye Kusimba
Simba rekukombama remacarbide anoshandiswa nesimbi rinowanzo shandiswa rinotangira pa900 kusvika 1500 MPa. Huremu hwesimbi hwakakwira hunoita kuti huve nesimba rekukombama rakakura. Kana huremu hwebinder huchienderana, ma alloys eYG (WC-Co) anoratidza simba guru kupfuura ma alloys eYT (WC-TiC-Co), simba richiderera sezvo huwandu hweTiC huchiwedzera. Carbide ine simende chinhu chinoputsika, uye kusimba kwayo pakupisa kwemumba kunongova 1/30 kusvika 1/8 chete yesimbi inomhanya zvikuru.
(3) Mashandisirwo eZvishandiso zveCarbide Zvakafanana
YG Alloys:Inonyanya kushandiswa pakugadzira simbi yakakandwa, simbi dzisina ferrous, uye zvinhu zvisiri zvesimbi. Carbides dzakagadzirwa nesimbi dzakapfava (semuenzaniso, YG3X, YG6X) dzinopa kuomarara kwakanyanya uye kuramba kupfeka kupfuura mhando dzesimbi dzine cobalt yakafanana. Idzi dzakakodzera kugadzirisa zvinhu zvakakosha zvakaita sesimbi yakakandwa, simbi isina ngura ye austenitic, alloys dzisingapisi, titanium alloys, bronze yakaoma, uye zvinhu zvinodzivirira kupisa zvisingatsvedzi.
YT Alloys:Dzinozivikanwa nekuoma kwazvo, kuramba kupisa kwakanyanya, uye kuomarara kwakanyanya uye simba rekudzvanya pakupisa kwakanyanya zvichienzaniswa neYG alloys, pamwe chete nekusimba kwakanaka kweoxidation. Kana zvishandiso zvichida kupisa kwakanyanya uye kuramba kupfeka, mamakisi ane huwandu hwakanyanya hweTiC anokurudzirwa. YT alloys dzakanakira kugadzira zvinhu zvepurasitiki zvakaita sesimbi asi hadzina kukodzera titanium alloys kana silicon-aluminium alloys.
YW Alloys:Sanganisa hunhu hweYG neYT alloys, zvichipa kushanda kwakanaka kwazvo. Dzinogona kushandiswa pakugadzira simbi, simbi yakakandwa, uye simbi dzisina feri. Nekuwedzera cobalt, YW alloys inogona kuwana simba rakawanda, zvichiita kuti dzikwanise kushandiswa pakugadzira simbi dzakaoma uye kucheka zvinhu zvakasiyana-siyana zvakaoma kushandisa muchina.
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Nguva yekutumira: Chikunguru-29-2025
