Niaj hnub no, tsheb nres ncoo cov tuam txhab tham txog cov teeb meem ib txwm muaj ntawm cov khoom siv semi-hlau hauv cov ntaub ntawv nres.
Yuav ua li cas los txhais cov khoom siv mis ntawm cov hlau nres: suav nrog cov hmoov av hlau, muab tso rau kom nce ntxiv, roj nplua nyeem hlau thiab cov hmoov av ntawm cov hmoov av muaj kwv yees li 40%.
Semi-metallic formulations rau cov khoom sib txhuam. Lub ntsiab nta: 1. Tus nqi tsawg. 2. Siab thermal conductivity. 3. Cov ris zoo tiv thaiv. 4. Haum rau kev ua haujlwm hnyav braking.
Thawj qhov teeb meem ntawm cov khoom sib txhuam:
1. Suab nrov, oscillation thiab roughness yooj yim, tsuas yog ua rau muaj suab nrov tsawg zaus, nrog kev ua phem ntawm lub cev.
2. Muaj plua plav (cov dej kub tsawg).
3. Cov ntsiab lus hlau siab ua rau muaj qhov kub thiab txias thiab tsis muaj qhov qis dua thiab tsis muaj qhov kub tsis muaj zog.
4. Siab thermal conductivity thiab cov cua sov cua sov yuav hloov cua sov mus rau lub sijhawm kub thiab ua kom nrawm nrawm, piston ntsaws ruaj ruaj thiab xa rov qab. Lub siab thermal conductivity tsuas yog ua rau lub thermal decomposition thiab siab qhov siab qhov kub ntawm cov ntaub ntawv tsis sib haum xeeb, uas yuav ua rau cov browed ob sab phling poob lossis tawg.
5. Lub zog adhesion, tsis yooj yim rau xeb. Tom qab corrosion, cov nplaum lossis kev puas tsuaj yog ob-txheej, thiab cov hnav yog aggragentated.
Feem pua ntim yog qhov tseeb kom ntev rau kev ntsuas cov khoom sib txhuam. Formulation engineers should take the initiative to understand the fundamental properties of various raw materials (density, particle size, hardness, moisture, chemical composition, elastic modulus), but also should clearly understand the effects of various friction materials on the micro and macro functions of friction materials. Tam sim no, raws li kev nkag siab ntawm tsheb nres ncoo cov tuam txhab tsim, feem ntau cov qauv tsim qauv tsim yog raws li cov zauv sib piv. In order to avoid the lack of fundamental data on the function of the raw material, it is theoretically difficult to express the connection between the number of ingredients in the formula and the conflicting functions in a simple and clear formula, such as mixing time, pressure time, pressure pressure, holding time and degassing time, grinding method, two layers of material, data and other factors can affect the braking function anytime and anywhere during the braking process. As regards the formulation itself, it is not correct to determine the proportions of the various ingredients by theoretical means, nor can we quickly derive direct quantitative links between the formulation and the function, which depend primarily on accumulated experience over a long period of time.
Lub Sijhawm Post: Feb-19-2025