Cov ntaub ntawv hlau feem ntau yog siv rau hauv zawv zawg kabmob hlau cov ntaub ntawv, suav nrog cov kabmob alloy (tseem hu ua Pakistan alloy lossis dawb alloy), hnav-resistant cam khwb cia hlau, tooj liab-raws li thiab aluminium-based alloy.
(1) Cov kabmob alloy (tseem hu ua Pakistan alloy lossis dawb alloy) Cov khoom tseem ceeb ntawm cov hlau yog tin, txhuas, tooj liab, txhawm rau txhim kho lub zog thiab hardness ntawm cov hlau. Raws li lub teb chaws tus qauv, Pakistan alloys yuav muab faib ua ob hom: tinlocular alloy thiab lead puag alloy. Qhov kev siv thiab hardness ntawm cov hlau lead consecration yog qis dua li ntawm cov tin conformity alloy, thiab corrosion kuj tsis zoo. Yog li ntawd, thaum siv Basal alloys, tinlocoli alloys feem ntau yog siv, thiab nws cov ntawv tso cai siv feem ntau muaj xws li ZSNSB11CU6, ZSNSB8CU4, thiab lwm yam. Txawm hais tias qhov kev ua tau zoo ntawm cov hlau lead-based alloy tsis zoo li tinlocular alloy, vim tias nws muaj kev lag luam ntau dua, nws tseem raug xaiv thiab siv raws li cov kev cai ntawm cov kev cai ntawm cov kev cai. Txawm li cas los xij, cov ntsiab lus melting ntawm cov kabmob alloy feem ntau yog qis, yog li nws tsim nyog rau kev ua haujlwm qis dua 150 degree C.
(2) Copper-based alloys muaj thermal conductivity thiab muaj kev puas tsuaj zoo dua piv rau cov hlau. Thiab tooj liab-based alloys muaj kev ua haujlwm zoo thiab lubrication. Nws cov phab ntsa sab hauv tuaj yeem ua tiav thiab nthuav tawm cov npoo du nrog axis. Copper alloys siv rau zawv zawg bearing cov ntaub ntawv feem ntau yog: tooj dag nrog tooj liab thiab cov khoom xyaw ua cov khoom xyaw tseem ceeb; bronze nrog tooj liab thiab tin ua cov khoom xyaw tseem ceeb; thiab tooj liab txhuas alloys (tseem hu ua lead bronze). Copper-based alloy yog siab, nrog zoo thermal conductivity thiab puas kuj. Nws tso cai rau kev ua haujlwm kub siab dua li ntawm Ba's alloys, tab sis qhov sib xyaw ua ke, kos thiab kev sib txhuam kev sib txhuam tsis zoo li ntawm Ba's alloys. Feem ntau siv tin thiab phosphorus tin bronze yog haum rau cov kabmob nrog nruab nrab-ceev overload lossis cuam tshuam load; tin bronze uas muaj tin, zinc, thiab txhuas yog haum rau cov kabmob ntawm nruab nrab-speed mid-load.
Cov ntaub ntawv tsis yog hlau rau cam bearing:
(1) Polytefluorolythene: Nws muaj kev ua haujlwm zoo ntawm tus kheej-lubricating thiab siab dua thermal stability. Nws qhov kev sib txhuam me me, tsis nqus dej, tsis nplaum, tsis hlawv, thiab tuaj yeem siv tau raws li cov xwm txheej ntawm -180 ~ 250 degree C. Txawm li cas los xij, kuj tseem muaj qhov tsis zoo xws li cov kab loj o, tsis zoo. stability, tsis zoo thermal conductivity. Txhawm rau txhim kho nws qhov kev ua tau zoo, cov khoom siv hlau, fiber ntau, graphite, thiab cov khoom tsis zoo tuaj yeem txhim kho.
(2) Graphite: Nws yog cov khoom siv zoo rau nws tus kheej, thiab vim tias nws yooj yim rau kev ua, thiab sib tsoo ntau dua, smoother, yog li nws yog cov khoom siv rau kev coj tus kheej. Txawm li cas los xij, nws cov khoom siv kho tshuab tsis zoo, qhov kev tiv thaiv ntawm kev cuam tshuam thiab kev kam rau siab yog qhov tsis zoo, thiab nws tsuas yog tsim nyog rau lub teeb load zaus. Txhawm rau txhim kho nws cov khoom siv kho tshuab, qee qhov yooj yim-rau-melt hlau nrog zoo hnav tsis kam yog feem ntau siv rau kev kho impregnation. Feem ntau siv cov ntaub ntawv immersive xws li Pa's alloy, tooj liab alloy, thiab tadpole alloy. Kev siv qhov kub thiab txias ntawm cov graphite cov kabmob yog 120 ~ 180 ° C, thiab cov tooj liab-soaked alloy graphite bearing raug tso cai siv qhov kub ntawm 300 ° C, thiab qhov kub thiab txias ua haujlwm tau tso cai los ntawm cov khoom siv graphite uas muaj peev xwm ncav cuag 500 degree. C.
(3) Roj Hmab: Nws yog ib qho polymer nrog lub cev elastic, uas muaj elasticity zoo thiab kev co. Txawm li cas los xij, nws cov thermal conduction tsis zoo thiab nyuaj rau kev ua haujlwm. Kev siv kub yog qis dua 65 ° C, thiab cov dej ntws yuav tsum tau txuas ntxiv lubricated thiab txias, yog li nws feem ntau tsis tshua siv.
(4) Cov khoom siv tawv tawv: muaj cov kev ua tau zoo heev xws li kev ua haujlwm siab, kev ua haujlwm tsis zoo, lub zog zoo thiab tawv, kub tsis kam, corrosion kuj, thiab lwm yam. Yog li ntawd, zawv zawg bearings ntawm kev ua haujlwm yog siab, khiav smoothness, siab hardness, lub zog zoo, lub zog zoo, lub zog zoo, lub zog zoo Nws yog qhov ruaj khov, tab sis tus nqi yog kim.
(5) Silicon carbide: Nws yog ib yam tshiab ntawm inorganic non-metal khoom siv rau cov khoom siv dag zog. Lub hardness yog thib ob tsuas yog pob zeb diamond. Nws muaj cov tshuaj tiv thaiv corrosion zoo heev, tiv thaiv corrosion, kub tsis kam thiab siab mechanical zog, zoo self-lubricating kev ua tau zoo, me me-temperature creep, me me kev sib txhuam yam, siab thermal taw qhia tus nqi, tsis tshua muaj thermal expansion coefficient, thiab lwm yam. Rau roj, metallurgy, chemical, machinery, aerospace, thiab nuclear zog, feem ntau yog siv los ua zawv zawg bearing thiab mechanical sealing kev sib txhuam cov ntaub ntawv. Ntau qhov kev ntsuam xyuas qhia tau hais tias silicon carbide yog cov khoom siv zoo tshaj plaws hauv kev sib txhuam tam sim no, tshwj xeeb tshaj yog kev ua haujlwm ntawm cov tsis-siab sintering SIC thiab kub-sintered sinic SIC.