Cov khoom siv ntawm cov hlau kos duab tuag tuaj yeem muab faib ua pawg hauv qab no:
- Alloy steel pwm: Feem ntau siv nyob rau hauv thaum ntxov hnub, nws yog ib qho yooj yim los tsim tab sis muaj tsis zoo hnav tsis kam thiab luv lifespan, thiab tau pib tshem tawm.
- Cemented carbide pwm (tseem hu ua tungsten steel pwm):
- Muaj pes tsawg leeg: tungsten carbide (WC) + cobalt (Co) thiab lwm yam hlau binders;
- Qhov zoo: siab hardness (87-92 HRC), zoo polishability, tsis tshua muaj kev sib txhuam coefficient, corrosion kuj;
- Daim ntawv thov: Siv dav rau kev kos cov khoom siv hlau xws li tooj liab, txhuas, stainless hlau, tungsten, thiab molybdenum, tshwj xeeb tshaj yog tsim rau loj - loj lossis ferrous hlau hlau cov ntaub ntawv;
- Cov qib sib txawv: YG6, YG8, YG15, thiab lwm yam, haum rau ntau qhov sib txawv ntawm txoj kab uas hla.
- Ntuj pob zeb diamond pwm:
- Qhov zoo: siab tshaj hardness, zoo heev hnav tsis kam, siab nto tiav;
- Qhov tsis zoo: siab brittleness, anisotropy, ua haujlwm nyuaj, thiab tus nqi siab;
- Daim ntawv thov: Feem ntau yog siv rau siab- cov xov hlau nyias nyias (xws li cov xov hlau kub thiab nyiaj) nrog cov kab uas hla tsawg dua 1.2 hli.
- Polycrystalline Pob Zeb Diamond (PCD):
- Artificial polycrystalline qauv, isotropic, nrog hnav zoo;
- Nws muab faib ua ob pawg: cobalt-raws li (kub tsis kam Tsawg dua lossis sib npaug li 650 degree) thiab silicon-raws li (kub tsis kam Tsawg dua lossis sib npaug li 1000℃);
- Qhov zoo: zoo hnav tsis kam, lub neej ntev, tus nqi qis dua piv rau ntuj pob zeb diamond;
- Daim Ntawv Thov: Ib qho kev xaiv tseem ceeb rau kev siab - nrawm nrawm ntawm tooj liab, txhuas, stainless hlau, thiab lwm yam.
- CVD pob zeb diamond pwm:
- Ntshiab pob zeb diamond films los yog cov qauv monolithic tau los ntawm cov tshuaj vapor deposition;
- Qhov zoo: tsis muaj binder, zoo thermal stability, zoo heev hnav tsis kam thiab nto tiav;
- Disadvantages: tsawg toughness, complex ua, nqi siab;
- Daim ntawv thov: me me txoj kab uas hla (xws li tungsten, molybdenum, stainless hlau xaim).
- Ceramic pwm:
- Qhov zoo: hnav tsis kam, kub tsis kam, corrosion kuj;
- Disadvantages: Tsis toughness, rhiab rau thermal shock, nyuaj rau txheej txheem;
- Daim ntawv thov: tseem tsis tau siv dav.
Zuag qhia tag nrho, cemented carbide pwm thiab polycrystalline pob zeb diamond pwm yog ob qho khoom siv dav siv ntau tshaj plaws hauv cov ntawv thov kev lag luam tam sim no, tsim nyog rau cov qauv hlau kos duab thiab siab -precision / siab- nrawm nrawm, raws li.
