Qhov cuam tshuam ntawm cov av noo ntawm SFU Pob Screws
Sfu Pob Screws, raws li siab - precision muaj kev sib kis, lawv cov kev ua tau zoo, kev ua haujlwm ruaj khov) yog ze rau cov huab cua ib puag ncig. Ya dej noo hauv huab cua, los ntawm kev sib chwv ncaj qha, infiltration lossis tshuaj lom neeg cov tshuaj tiv thaiv ntawm cov hlau, uas yog sau ua ke raws li hauv qab no.
Ua ntej, kev xeb thiab kev puas tsuaj rau cov hlau tseem ceeb
Sfu Pob ScrewsNtawm cov ntsia hlau ncej, txiv ntoo substrate, pob thiab riam phom siab, tab sis cov khoom siv tshuaj tsw qab, tab sis cov khoom siv tshuaj lom neeg ntawm cov khoom siv hlau ua kom nws muaj av noo.
Zuj zus kev puas tsuaj ntawm electrochemical corrosion
Nyob rau hauv ib puag ncig nrog ib tug txheeb ze cov av noo ntawm ntau dua 60%, noo noo nyob rau hauv cov huab cua yuav ua ib zaj duab xis txuas ntxiv ntawm cov hlau nto. Yog tias muaj cov tshuaj ntsev hauv huab cua (piv txwv li, hauv cov ntug dej hiav txwv uas muaj cov hlau hluav taws xob) thiab cov duab ua yeeb yaj kiab uas muaj hluav taws xob ua ke los ua Fe²⁺, uas ua ke nrog Oxygen thiab hydroxide nyob rau hauv cov dej los ua kom muaj ferrous hydroxide, uas oxidizes rau liab xim av xim av (fe₂₂₃₃₃ a).
Qhov pib corrosion tsuas yog manifested li hauv zos me ntsis (ra tsawg dua thaum muaj tsawg dua lossis sib npaug rau 55dB rau ntau tshaj 65dB.
Ntev -}}} Cov av noo (xws li cov av noo, uas yuav ua rau muaj kev sib tw ntawm kev sib tw (ntses kev sib tw) 0.01mm / 300mm / 300mm los ntawm ± 0.2 hli / 300mm rau ± 0.1mm / 300mm / 300mm lossis ntau dua, tsis tuaj yeem ua tau raws li qhov xav tau ntawm cov khoom siv ntsuas. Nws yog tsis yooj yim sua kom tau raws li qhov xav tau ntawm precision cov khoom siv.
Cov Khaub Ncaws Ntaus Cov Khaub Ncaws Hluav Taws Xob hauv qhov kub thiab txias thiab kub noo ib puag ncig
When the ambient temperature plummets (e.g., the temperature difference between day and night in the workshop is >15℃) and the humidity is >70%, dej vapor hauv cov huab cua yuav ua rau lwg nyob rau hauv lwg nyob rau saum npoo ntawm cov ntsia hlau thiab tsim lub xeev "kua dej ncaj qha". Qhov no condensate no tsis tsuas yog ua kom nrawm dua, tab sis kuj tseem nkag mus rau hauv cov kis me me ntawm pob thiab raceway (kwv yees} mm), thiab ntawm tsawg kub (piv txwv li<10℃) may trigger localized icing, leading to "stalling" at the start-up of the Screw - Motor Drive Torque needs to be increased by 20%-30% to overcome the icing resistance, and in serious cases, it will cause the rigid impact of the ball and raceway, resulting in permanent deformation.
Thib ob, kev ua haujlwm ntawm lub cav lubrication system attenuming effect
Sfu Pob ScrewsVam khom rau roj (xws li roj Lithium, polyurea roj) los ua kom ua tiav cov roj, kom ua tiav kev sib txhuam ntawm pob thiab raceway, xeb tiv thaiv thiab tsis kam. Cov av noo destabilizes lubrication system dhau los ntawm kev ua haujlwm ntawm lub cev thiab tshuaj lom neeg.
Emulsification thiab tsis muaj roj
When humidity is >65%, water vapor will slowly penetrate into the grease through the gaps in the screw nut (e.g., the mating gap between the seal and the screw shaft). For ordinary lithium grease, when the moisture content exceeds 5%, emulsification will occur - the grease structure changes from a uniform colloidal state to an emulsion separating oil and water, and the film strength decreases from 0.05MPa to 0.02MPa or less. At this time, the probability of direct metal contact between ball and raceway increases, and the wear rate increases by 3-5 times, and there will be obvious "stuttering" when the screw is running, and even high-frequency vibration when it is running at high speed (e.g., the speed is >3000r / min), uas cuam tshuam rau qhov chaw ua haujlwm raug.
Kev siv kev ntxiv thiab kev tiv thaiv tsis ua haujlwm
Siab -}}}}}}, calcium sulfonate) thiab antioxidants (piv txwv li, phenolic tebchaw) los txhim kho kev tiv thaiv. Hauv cov huab cua siab ib puag ncig, dej vapor reacts nyiam nrog rust Thaum twg muaj kev tiv thaiv xeb yog ploj, cov hlau saum npoo plam nws txheej tiv thaiv, thiab txawm tias thaum xeb yog tseem muaj ob zaug siab dua li ib txwm. Tsis tas li ntawd, noo noo yuav ua kom muaj kev cuam tshuam ntawm antioxidants, yog li cov kev ua kom sov oxident, thiab cov kev pab cuam kub siab, thiab cov kev pab cuam lub neej kom luv los ntawm 12 lub hlis mus rau tsawg dua 6 lub hlis.
Thib peb, qhov kev pheej hmoo ntawm kev thaiv kev sib khi thiab ncig
SFU lub nplhaib sib tsoo (piv txwv li cov plua plav nplhaib sib khi) thiab lub ntsej muag rov qab los txo qis, thiab kev ua kom siab dua nyob rau hauv ob txoj kev, los ntawm kev laus lub cev thiab kev tso tawm ntawm cov impurities.
Kev laus thiab tawv tawv ntawm cov ntsaws ruaj ruaj
Seals commonly used in screws (e.g., polyurethane U-rings, nitrile butadiene rubber lip rings) in environments with humidity >70% yuav yaj tag los vim kev nqus dej (ntim nce ntawm 5% -10%), thaum cov kev txo qis ntawm cov roj hmab, thaum muaj kev txo qis ntawm 20% -30%. Ntsia ntawm "daim di ncauj" thiab cov ntsia hlau ib ce tsis muaj zog, thiab tsis muaj pa hluav taws xob ntxiv nrog 0.01 hli lossis ntau dua, tsis yog siv tau cov roj sab hauv, thiab tsis muaj pa hluav taws xob ntxiv nrog rau 0.01 hli lossis ntau dua li cov roj av hauv av, Groove (lub taub yog feem ntau<5mm), resulting in ball circulation. 5mm), resulting in poor ball circulation, triggering "stuck" failure.
Microbial kev loj hlob nyob rau hauv cov kev ncig channel
In warm and high humidity environments (temperature 25-35°C, humidity >70%), dej vapor uas pom hauv kev sib txuas nrog cov organic nyob rau hauv cov roj organic hauv cov roj hauv qab) thiab tuaj yeem loj hlob pwm (xws li aspergillus, penicillium). Pwm mycelium yuav tau entangled nyob rau hauv lub pob ntawm pob, sib sau ib lub cheeb ntawm 0.1 {} 0.2mm "zaj duab xis", ua rau tsis sib xws rau pob khiav; Nyob rau tib lub sijhawm, cov me me metabolism hauv cov organic acids (xws li citric acid) yuav ua rau kev pab corrosion ", yuav ua rau txoj haujlwm ntawm cov ntsia hlau luv rau tus qauv tsim ntawm 1/3.
Plaub, nyob ntev - sij hawm cia thiab rau sab hauv lub xeev ntawm kev puas tsuaj thaum
SFU Ball Screws long-term downtime (such as equipment maintenance, seasonal shutdown) or storage, the impact of humidity is more insidious and more destructive. In an unprotected environment with >60% noo noo, noo noo noo ntawm saum npoo ntawm cov ntsia hlau yuav tsim cov khoom lag luam corrosion (xeb) thiab cov muaj peev xwm ua rau hauv qab ntawm kev sib tw ntawm 0.02-0.5mm nyob rau hauv 3 lub hlis. Tsis pub dhau 3 hlis, kev ua kom haum corrosion nrog ib tug tob ntawm 0.02-0.05mm tuaj yeem tsim nyob rau hauv qab ntawm Raceway. Cov ntawv me me no hauv kev ua haujlwm tom ntej, yuav dhau los ua kev nyuaj siab, ua rau muaj kev sib hloov ntawm 1,000 teev ntawm cov kev sib tsoo tam sim ntawd, uas ua rau cov khoom siv downtimes.
In addition, humidity fluctuations in the storage environment (eg day and night humidity difference > 20%) will lead to repeated "hygroscopic - drying" of the metal parts of the screw, triggering thermal expansion and contraction stress, which, together with the volumetric expansion generated by corrosion, may result in the tightening of the nut and the screw shaft, or even the need for destructive dismantling to Muaj peev xwm cais lawv, uas yuav ncaj qha rau cov kab mob ntawm qhov chaw.
Sau lub ntsiab thiab teb rau lub cav
Qhov cuam tshuam ntawm cov av noo rauSfu Pob Screws is the result of the synergistic effect of multiple links: from metal corrosion to lubrication failure, from sealing damage to circulation blockage, which ultimately leads to a decline in transmission accuracy, shorten the life of the drive and even sudden failure. For different humidity scenarios, need to take layered protection measures: low humidity (40% -60%) environment to regular lubrication and maintenance; high humidity (60% -80%) need to strengthen the seal (such as upgraded to double-lip seals) and the use of waterproof grease; high humidity (>80%) lossis ib puag ncig hnyav yuav tsum tau ua ke nrog cov khoom siv tsis zoo ntawm cov av noo (xws li cov khoom siv antoridification)
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