Kev thov rau cov nplaum nplaum thiab cov sealants txuas ntxiv tsis tu ncua txawm tias muaj ntau thiab ntau dua kev sib xyaw thiab cov yeeb nkab chaw vuam thev naus laus zis. Nws yog pom tseeb tias ib txwm txhais tau tias ntawm kev sib khi cov pob qij txha, xws li flax thiab FUM daim kab xev, tau ntev lawm tsis sib tw nrog cov nplaum nplaum. Cov neeg sawv cev thev naus laus zis tshaj plaws ntawm thaj chaw no yog anaerobic kua nplaum, uas yog siv los ntawm ob tus kws tshaj lij thiab cov kws ua haujlwm hauv tsev.
Material overview
Lub cuab yeej yog ib yam tshwj xeeb ntawm cov ntaub nplaum uas ua raws li cov ntsaws ruaj ruaj thiab sealants. Xws li cov khoom xyaw hu ua anaerobic vim tsis muaj oxygen ib puag ncig hauv thaj tsam ntawm kev ua. Thaum lub sij hawm ntawm daim ntawv thov ntawm xws li ib tug nplaum rau lub hom phiaj nto, ib tug ceev ceev ntawm cov huab cua tshwm sim nrog rau cov creation ntawm ib tug tsis muaj oxygen qhov chaw, uas ua rau muaj kev haum xeeb rau kho.khoom. Lub cev thiab tshuaj lom neeg, anaerobic adhesive tuaj yeem xav tias yog cov kua polymeric sib tov uas tuaj yeem ua rau hauv daim ntawv muab tshuaj, gel, lossis txawm tias aerosol.
Khoom siv
Cov tshuaj sib xyaw no yog siv ntau yam kev lag luam - los ntawm tsev neeg mus rau aerospace. Los ntawm txoj kev, nyob rau hauv Russia, kev sib kis ntawm cov khoom siv anaerobic yog txuam nrog kev loj hlob ntawm lub foob pob hluav taws thiab cov khoom siv chaw nyob hauv nruab nrab ntawm lub xyoo pua xeem. Thaum xub thawj lawv tau siv los xauv cov ntsiab lus txhawm rau txhawm rau tiv thaiv kom tsis txhob xoob ntawm cov txiv ntoo. Nws yog nyob rau hauv lub peev xwm uas cov khoom siv niaj hnub no. Ntxiv mus, cov anaerobic xov sealant nyob rau hauv kev ua lag luam tsim lub hauv paus ntawm cov yeeb nkab seals. Nws kuj yog siv los tshem tawm cov teeb meem me me ntawm cov ntawv hlau, txhawm rau ntxiv dag zog welds thiab txhim kho ntau yam pob qij txha. Ncaj nraim rau hauv daim ntawv ntawm cov kua nplaum, tus neeg sawv cev no tau pom zoo kom siv rau qhov chaw tiaj tus. Hauv kev lag luam, cov khoom siv pab hloov cov yam ntxwv thiab cov qauv zoo ntawm cov khoom siv hmoov metallurgy.
Cov kua nplaum
Cov khoom siv anaerobic feem ntau yog raws li cov khoom xyaw hauv qab no:
- Acrylic oligomers thiab monomers.
- Cov khoom uas pib ua cov nplaum nplaum.
- Inhibitors (stabilizing pab pawg).
- Kev suav nrog. Kev siv cov khoom ntawm cov spectrum no yog tus kheej thiab nyob ntawm kev tsim ntawm ib qho chaw tsim khoom. Tshwj xeeb,dyes, plasticizers, thickeners, Frost-resistant additives, thiab lwm yam yuav siv tau.
Inhibitors thiab activators ntawm anaerobic kua nplaum, uas txiav txim siab ua haujlwm zoo ntawm cov khoom xyaw, tsim nyog saib xyuas tshwj xeeb. Cov thawj coj tau nkag siab tias yog hydroperoxide, uas txiav txim siab cov txheej txheem ntawm cov dawb radical polymerization. Ua ke nrog cov tshuaj tiv thaiv accelerators (amines thiab heterocyclic nitrogen-muaj cov tebchaw), nws muab qhov txo qis hauv qhov kub ntawm polymerization. Raws li rau activators, lawv lub luag haujlwm tseem ceeb yog txhawm rau kho kom sai. Pawg ntawm cov khoom no yog sawv cev los ntawm tooj liab ntsev, organic daws thiab sulfur-nitrogen-muaj cov tebchaw.
Txoj Cai Ua Haujlwm
Cov pab pawg acrylic muaj lub ntsiab sib khi thiab cov nplaum nplaum, tsim cov txheej txheem sib txuas sib txuas ntawm cov khoom sib txuas. Kev sib cuam tshuam ntawm cov khoom ntawm pawg pib nrog cov qauv hlau txhawb kev tsim cov radicals, vim tias cov pa oxygen tau noj. Tawm tsam keeb kwm yav dhau los no, cov txheej txheem kho tau zoo dua qub. Nws yog ib qho tseem ceeb uas yuav tsum tau hais txog tias cov hlau zoo li no yog ib qho tsim nyog koom nrog hauv cov txheej txheem polymerization, vim tias cov anaerobic muaj pes tsawg leeg ntawm cov xov sealant kis los ntawm cov kua hauv lub xeev mus rau hauv cov qauv ntawm cov khoom polymer. Lwm qhov yog tias cov hlau sib txawv, vim qhov peculiarities ntawm lawv tus kheej cov qauv molecular, tuaj yeem cuam tshuam sib txawv nrog tib cov activators. Piv txwv li, hlau, tooj liab thiab hlau ua rau kom nrawm ntawm polymerization (solidification), vim lawv koom nrog cov tshuaj tiv thaiv redox. Yog li ntawd, blanksntawm cov hlau no raug kaw 2-3 teev tom qab siv cov muaj pes tsawg leeg. Nyob rau hauv cov ntaub ntawv ntawm txhuas, chromium thiab alloyed hlau alloys, cov txheej txheem kho rau lub xeev yuav tsum tau siv sij hawm 5-7 teev. Tab sis cov manufacturers lawv tus kheej, tsis hais lub hom phiaj cov ntaub ntawv, pom zoo kom qhia lub machined ib feem rau hauv cov txheej txheem tsuas yog tom qab 24 teev..
Kev ua haujlwm
Anaerobic sealing cov ntaub ntawv muaj cov yam ntxwv hauv qab no:
- Kev sib xyaw ntawm viscosity thiab fluidity nyob rau hauv kev txwv kom ua hauj lwm nrog clearances ntawm 0.07 mus rau 0.5 hli.
- Durability - tswj cov yam ntxwv tseem ceeb tsawg kawg 12 lub hlis.
- High curing rate at room temperature.
- Ib leeg-cov khoom sib xyaw - cov khoom sib xyaw yog muag npaj ua, yog li nws tsis tas yuav diluted nrog tshwj xeeb additives.
- Lub zog muaj zog - pom zoo tshaj plaws hauv cov nplaum nplaum uas haum rau kev kho cov hlau, enamel, ceramic thiab graphite cov ntaub ntawv.
- Anti-corrosion - tshwj xeeb tshaj yog muaj txiaj ntsig zoo rau cov khoom siv hlau, cov ntu xov uas tsis muaj lawv tus kheej tiv thaiv xeb.
- Resistant rau oily tshuaj, ua tsaug uas cov compound tuaj yeem siv rau qhov chaw tshiab ntawm cov kav dej tshiab nrog lub Hoobkas lubrication.
Ntau yam kua nplaum
Txawm hais tias muaj cov txheej txheem thev naus laus zis thiab cov ntsiab lus zoo sib xws, cov khoom sib xyaw anaerobic vim cov hloov pauv tau sib txawvcov txheej txheem thiab cov khoom siv lub cev, uas ua rau lawv faib ua cov hauv qab no:
- lub tes tsho retainers. Tsim los rau kev saib xyuas cov khoom siv ntawm ntau lub tshuab - piv txwv li, bearings, gears, bushings, spindles, cylinders, thiab lwm yam. Cov tebchaw no qhia tau tias muaj peev xwm ua haujlwm siab rau cylindrical fasteners, txo kev ntxhov siab thaum lub sijhawm ua haujlwm ntawm cov khoom.
- Cov kav dej xaum hloov pauv cov tshuaj PTFE cov tshuaj nplaum thiab cov ntaub nplaum. Lawv yog siv raws li cov yeeb nkab thiab threaded seals. Ntawm cov haujlwm ua haujlwm, ib tus tuaj yeem ua ib qho kev cuam tshuam polymerization sai, tsis muaj evaporation thiab melting ntawm qhov kub thiab txias, nrog rau muab cov nyhuv lubricating hauv qee cov qauv.
- Control adhesive mixs. Lawv yog siv nyob rau hauv kev lag luam - tshwj xeeb tshaj yog nyob rau hauv lub automotive thiab mechanical engineering nyob rau hauv sib dhos txheej txheem thiab nyob rau hauv kev saib xyuas. Thaum lub sijhawm ua haujlwm, qhov khoob ntawm cov xov sib txuas tau sau, txo cov teebmeem vibration.
Technology ntawm cov khoom siv
Ua ntej siv, cov khoom yuav tsum tau shaken hauv lub pob, ntxuav qhov chaw ua haujlwm thiab npaj ib daim ntaub huv los yog daim ntaub so ntswg kom tshem tawm cov kua nplaum ntau dhau. Cov muaj pes tsawg leeg yog siv rau qhov chaw ua hauj lwm nyob rau hauv ib tug tuab txheej kom tag nrho cov kev sib koom cheeb tsam yog them. Nyob rau hauv cov ntaub ntawv ntawm ib tug threaded fastening rau cov kav dej, lub sealant yog muab tso rau sab nraud thiab sab hauv lub workpieces raws ib tug helical ditch. Tsis tas li ntawd, qhov sib xyaw ua ke yog sib npaug, thiab tom qab ntawd kev sib txuas yog ua. Tshaj tawmyuav tsum tau muab pov tseg tam sim ntawd los ntawm kev ua tib zoo tu qhov chaw tsis huv.
Zoo ua haujlwm zoo
txhawm rau txhawm rau siv cov khoom ntawm cov khoom siv anaerobic, nws yog qhov tsim nyog xav txog ua ntej cov xwm txheej zoo rau nws txoj haujlwm. Yog li, qhov kub thiab txias yog qhov tseem ceeb - cov khoom no qhia lawv tus kheej zoo tshaj plaws ntawm 18-30 ° C. Nws yog qhov tsim nyog los tiv thaiv kev sib cuag ntawm qhov chaw kho mob nrog kev tawm tsam hnyav xws li cov kua qaub, cov kuab tshuaj thiab alkalis, uas yuav ua rau cov qauv ntawm cov ntaub ntawv polymer. Ntau cov qauv anaerobic adhesive yog rhiab rau cov neeg kho tshuab kev nyuaj siab, thiab qhov no kuj siv tau rau me me vibrations. Yog li ntawd, nws raug pom zoo kom txhim kho cov kav dej thiab lwm yam qauv, tiv thaiv kev vibration me ntsis.
Zoo kawg
Los ntawm qhov pom ntawm qhov ua tau zoo, lub hauv paus ntsiab lus anaerobic sealing rau ntau hom threaded fasteners yog qhov zoo. Nws tau xyaum tsis muaj qhov tsis zoo ntawm kev ua haujlwm, yog tias koj tsis coj mus rau hauv tus account lub complexity ntawm dismantling. Nws yuav tsim nyog rau disassemble cov qauv kho nrog anaerobic adhesive-sealant nrog kev sib txuas ntawm lub tsev plaub hau tshuab, cov kwj dej kub uas yuav rhuav tshem cov qauv polymer. Tsis tas li ntawd, thaum xaiv txoj kev no ntawm kev sib khi cov pob qij txha, ib tus yuav tsum nco ntsoov txog qhov nyiaj txiag. Yog li, nyob rau nruab nrab, rau 50 ml ntawm anaerobic muaj pes tsawg leeg, manufacturers nug txog 400-500 rubles. Hauv kev sib piv, cov khoom siv sib khi thiab cov khoom sib khi yuav raug nqi ntau zaus tsawg dua, uas yog tshwj xeeb tshaj yog pom zoo nrog kev saib xyuas tsis tu ncua ntawm threaded kev sib txuas.hauv ntim loj.
