Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, qee cov khoom siv cuab yeej ua tau zoo tau tshwm sim ib qho tom qab, uas qhia txog kev txhim kho thiab kev loj hlob ntawm kev siv tshuab txiav.
Lub toughness thiab hardness ntawm ib qho khoom siv ntawm cov cuab yeej coated feem ntau tsis tuaj yeem suav nrog. Nyob rau hauv xyoo tas los no, cov txheej txheem tshiab ntawm txheej txheej ntawm cov khoom siv tau raug saws, thiab tau txais txiaj ntsig zoo.
Cov cuab yeej coated yog 5 ~ 12um tuab txheej ntawm cov hlau refractory nrog siab hnav tsis kam ntawm cov hlau kub ceev lossis cemented carbide cov cuab yeej substrate nrog cov tawv tawv zoo, feem, los ntawm lub cev vapor deposition lossis tshuaj vapor deposition. , xws li titanium carbide (TiC), titanium nitride (TiN) thiab txhuas oxide (Al: O,) thiab lwm yam. Kev txiav ib feem ntawm lub cuab yeej tsis tsuas yog muaj lub zog thiab toughness ntawm lub hauv paus khoom, tab sis kuj muaj siab hardness thiab hnav tsis kam ntawm cov khoom txheej, uas zoo dua daws qhov tsis sib xws ntawm lub zog, toughness, hardness thiab hnav tsis kam, yog li txhim kho cov txiav. cuab yeej. Cov kev ua tau zoo, tshwj xeeb tshaj yog tsim rau kev kub ceev txiav.
1) TiC coated inserts. Tshuab dhos TiC txheej muaj cov ntsiab lus siab melting, hardness thiab hnav tsis kam, nrog rau muaj peev xwm tiv thaiv oxidation zoo. Nws tuaj yeem tsim cov yeeb yaj kiab hlau oxide thaum txiav, uas tuaj yeem txo qhov kev sib txhuam thiab txo cov cuab yeej hnav. Feem ntau, qhov nyuaj tuaj yeem siab dua li cov cemented carbide zoo tib yam. Ntau tshaj 1 zaug, kev txiav ceev tuaj yeem nce li ntawm 40 feem pua. Kev sib txuas ntawm TiC thiab hlau yog siab, cov nplej saum npoo zoo, thiab nws tsis yooj yim los tsim cov ntug tsim, uas yog tsim rau kev zoo tig.
2) TiN coated inserts. Lub TiN txheej muaj qhov sib txuam me me nrog cov khoom siv hlau thiab muaj kev sib txhuam qis, uas tuaj yeem txo qhov kub thiab txias. Lub peev xwm los tiv thaiv oxidation thiab rov qab hnav muaj peev xwm ntawm lub tshuab dhos muaj zog dua li TiC ntxig, lub tshuab ua haujlwm tuaj yeem txhuam kom me me roughness tus nqi, thiab lub cuab yeej lub neej tuaj yeem txhim kho, thiab nws tsim nyog rau kev txiav cov ntaub ntawv yas. yooj yim lo rau lub cuab yeej.
3) Al: 0. Coated hniav. Al:. , cov txheej muaj thermal stability zoo thiab siab kub hardness ntawm high kub. Thaum lub tshuab dhos txiav, qhov kev sib txhuam me me, thiab nws tsis yooj yim los tsim cov ntug tsim, uas tuaj yeem tau txais qhov me me ntawm qhov roughness tus nqi thiab xyuas kom ruaj khov ntawm qhov raug.
4) Composite txheej. Tam sim no, ib leeg-coated inserts ntawm lub tshuab dhos tsis tshua siv, thiab cov txheej txheem sib xyaw feem ntau yog siv, xws li: TiC-TiN txheej txheej, TiC-AI203 txheej txheej.