1. Cov khoom siv sib xyaw ua ke ntawm cov log tsheb sib xyaw ua ke ntawm cov hlau Chromium siab
Cov hlau chromium siab ua los ntawm cov khoom siv ceramic composite roller yog ua los ntawm cov hlau chromium siab ua cov khoom siv matrix, los ntawm cov txheej txheem tshwj xeeb, cov hlau chromium siab thiab cov khoom siv honeycomb ceramic composite molding, cov khoom siv ceramic ZTA, thiab tom qab ntawd los ntawm cov txheej txheem xuab zeb casting, cov hlau chromium siab ua los ntawm cov khoom siv ceramic composite thiab cov hlau ductile theem nrab molding. Cov tshuaj lom neeg ntawm cov khoom siv hlau chromium siab tau qhia hauv Rooj 1 hauv qab no.
Rooj 1: Cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov hlau sib xyaw ua ke uas muaj chromium siab (wt%)
| Khoom siv | C | Si | Mn | S | P | Cr |
| Cov log tsheb sib xyaw ua ke nrog cov chromium siab heev | 2.8-3.2 | 0.5-1.0 | 0.5-1.2 | ≤0.05 | ≤0.05 | 20-26 |
| Hlau nplaum | 3.2-3.9 | 2.5-2.7 | 0.3~0.5 | ≤0.04 | ≤0.04 |
2. Khoom siv kho tshuab
Cov log tsheb ceramic composite roller uas muaj chromium siab yog cov khoom sib xyaw ua ke ntawm cov hlau chromium siab, ZTA cov khoom siv ceramic thiab cov hlau ductile, uas ua rau lub tes tsho ceramic composite roller tsis tsuas yog muaj lub zog thiab qhov nyuaj siab xwb, tab sis kuj muaj qhov tawv siab, ua kom ntseeg tau tias qhov hnav tsis kam thiab kev nyab xeeb ntawm lub tes tsho roller. ZTA cov khoom siv ceramic hardness yog siab dua HV2100, thaum cov hlau chromium siab M7C3 carbide hardness yog siab dua HV1400, thiab cov hlau chromium siab matrix hardness yog siab dua HV750, yog li ntawd, nyob rau hauv qhov xwm txheej ntawm kev ntxhov siab siab abrasive ob lub cev muaj kev ntxhov siab siab hnav, vim qhov sib txawv ntawm cov ntaub ntawv, lub neej ua haujlwm ntawm cov hlau ceramic composite yob tes tsho yog 1.5-3 npaug ntawm cov hlau chromium siab ib txwm yob tes tsho. Cov khoom ntawm cov hlau chromium siab thiab cov hlau ductile tau qhia hauv Rooj 2 hauv qab no.
Rooj 2: Khoom Siv Kho Tshuab
| Khoom siv | Lub zog tensile / Mp | Kev Cuam Tshuam Toughness J/cm22 | Qhov nyuaj/HRC | Tus nqi ntawm kev ntev (%) |
| Chrome Siab | ≥800 | ≥4 | ≥60 | --- |
| Hlau Ductile | 500 ~ 650 | ---- | 147~241（HB） | 4~10 |
3. Kev tsim qauv ntawm cov log tsheb sib xyaw ua ke ntawm cov chromium siab
Tus qauv tsim ntawm cov hlau ceramic composite roller sleeve uas muaj cov chromium siab tau qhia nyob rau hauv Daim Duab 1 thiab Daim Duab 2 hauv qab no. Thaj chaw liab honeycomb yog thaj chaw faib cov khoom ceramic uas tiv taus ZTA. Cov khoom ceramic tau faib rau hauv cov khoom sib xyaw chromium siab hauv cov qauv honeycomb, thiab txheej ceramic npog thaj chaw hnav ua haujlwm ntawm tag nrho cov tes tsho roller. Thaj chaw ntsuab sab nraum cov txheej ceramic yog hlau ceramic siab, thiab thaj chaw xiav yog hlau ductile.
