Qhia koj kom paub txog kev qhia txog cov khoom ntim ntawm cov khoom siv sib xyaw
Jun 01, 2019| Qhia koj kom paub txog kev qhia txog cov khoom ntim ntawm cov khoom siv sib xyaw
Txij li thaum lub tswv yim qhia txog kev siv tshuab nqus hlau nyob hauv Suav teb, tom qab ntau tshaj li kaum xyoo ntawm txoj kev loj hlob, nws yog ib lub tshuab ua lag luam loj hauv Suav teb. Nyob rau hauv xyoo tas los, vim lub nruj soj ntsuam ntawm ib puag ncig tiv thaiv, kaw kaw kev tuag tau ntau thiab ntau xim.
Pib los ntawm txoj cai ntawm kev qhia txog lub tshuab nqus tsev, daim ntawv no yuav qhia meej txog cov txheej txheem ntawm kev ua haujlwm, thiab muab piv nrog lwm cov txheej txheem ntawm cov khoom siv thiab cov khoom zoo, kom txhua tus muaj lub ntsiab lus tseem ceeb ntawm kev qhia txog kev nqus tsev.
1. Cov txheej txheem nqus dej nqus dej (VIP)
Txuas cov tshuab nqus hlau (VIP), txuas ntxiv rau cov khoom siv hauv cov pwm (iav fiber, carbon fiber, sandwich khoom, thiab lwm yam), sib txawv ntawm lub tshuab nqus tsev vacuum), thiab tom qab ntawd kis cov hnab ntim, , ua kom muaj lub siab tsis zoo ntawm cov kabmob mold, los ntawm kev siv lub tshuab nqus tsev ntawm lub unsaturated resin ua ntej paving yeeb nkab siab rau hauv cov av phom, sau cov pwm tseem, nrog cov infintravation reinforced khoom kawg tom qab tua, cov khoom ntim nqus , tau cov khoom kom tau los ntawm cov pwm.
VIP SIV ib sab pwm (zoo li cov tshuaj siv li qub thiab tshuaj tsuag pwm) los tsim kom muaj kev kaw.
Cov txheej txheem nqus tsev nqus tau ua haujlwm ntev lawm. Nws yog patented nyob rau hauv 1950. Tsuas yog nyob rau hauv lub xyoo dhau los, li cas los xij, muaj kev loj hlob pib. Vim hais txog cov txheej txheem no los ntawm abroad, yog li nyob rau hauv lub npe ntawm ntau lub npe, kev qhia txog lub tshuab nqus tsev, nqus dej nqus, nqus tshuaj, thiab lwm yam.
2, txoj kev xav
Cov txheej txheem nqus tsev nqus tau siv dav, thiab nws muaj nws cov qauv theoretical, uas yog darcy txoj cai:
Darcy 's Law) t = ℓ 2 h / 2 (kDP)
t yog los sij hawm ntshuam, txiav txim siab los ntawm plaub tsis muaj. H - reed viscosity
Nws tuaj yeem pom los ntawm tus qauv tias qhov qis dua qhov uas siv cov ntaub ntawm cov duab uas siv, qhov luv luv rau lub sijhawm yuav tsum muaj rau kev taw qhia. Yog li, qhov uas siv cov tshuaj siv coj mus siv rau lub tshuab nqus tsev yuav tsum tsis txhob siab dhau. Qhov no tso cai rau tus qauv ua pwm sai sai.
ℓ - kev txhaj tshuaj ntev, hais txog cov duab ntxhib thiab qhov kev ncua deb ntawm qhov chaw tawm mus, ntawm chav kawm kuj yog lub sijhawm uas yuav tsum tau ntev ntev.
DP- siab sib txawv, qhov ntau dua qhov sib txawv ntawm qhov system thiab lub zog, qhov ntau dua qhov tsav quab yuam ntawm lub pob zeb, qhov ceev cov ntaub qhwv ntau dua, ntawm chav kawm, lub sij hawm luv luv ntawm cov kab ua lag luam.
K = permeability, hais txog cov ciaj ciam iav, cov khoom noj khoom siv, thiab lwm yam zoo li ntawm qhov infiltration of resin. Qhov loj tshaj plaws ntawm k kiv pom zoo zoo, zoo ib yam li ntau txoj hlua khi plaub, tev tau yooj yim kom rov ua pauv tau infiltration. Yog li, thiaj li yuav ua rau cov duab ua kom yooj yim rau hauv lub zog thaum cov khoom siv reinforcing compacted, qee qhov kev sib txuas, xws li drilling thiab down lub sandwich ua npuas, feem ntau yog tsim artificially.
3, qhov zoo
Nyob rau hauv qhov qub tes lay-up txheej txheem, qhov cuab zog yog kis hauv pwm, manually infiltrating reinforcement nrog txhuam, rollers, los yog lwm yam. Lwm txoj kev zoo siab yog siv cov hnab nqus nqus kom nqus dej ntau dua los ntawm kev so. Qhov no ua rau cov khoom fiberglass nce, ua rau muaj zog thiab sib zog ua khoom. Muab piv rau cov cuab yeej technology, VIP muaj ntau yam zoo. Raws li pom hauv daim duab, tes muab tshuaj, hnab xau thiab lub tshuab nqus tsev nqus coj los ua piv txwv. Nyob rau hauv cov nqe lus ntawm cov khoom siv mechanical, lub tshuab nqus tsev nqus tau pom zoo.
Nws tuaj yeem pom tau tias qhov zoo ntawm kev qhia txog lub tshuab nqus tsev:
A. zoo tshaj cov khoom: resin impregnated iav fiber ntau hauv lub tshuab nqus tsev. Muaj ntau ntau npuas hauv cov khoom piv nrog cov txheej txheem tsim kev lag luam. Yog tsis muaj cov tshuaj reins nyob rau hauv qhov system thiab cov iav fiber ntau heev, nce mus txog 70% los yog siab dua. Cov khoom ua tau yog sib zog thiab muaj zog dua. Kev sib tw rau batch kuj tseem khov heev.
B. tsis tshua mob dua: nrog VIP txheej txheem, tus nqi ntawm cov khoom siv yuav tsum yog pob nyiaj, thiab kev siv tshuaj los yog kev txhaj tshuaj, nws yog ib qho nyuaj rau kev tswj ntawm kev hloov ntawm cov neeg teb xov tooj. VIP tuaj yeem txo qis dua, thiab qhov tseem ceeb, txuag cov nqi.
C. kev faib tawm ntawm cov duab: rau ib yam khoom, lub siab tau tsim los ntawm lub tshuab nqus tsev nyob rau ntau qhov chaw yog tib yam, yog li qhov infiltration tus nqi thiab cov ntsiab lus ntawm cov ntaub qhwv mus rau iav fiber ntau yuav zoo li qub. Qhov no tseem ceeb heev rau qhov nyhav - ruaj khov FRP qhov chaw.
D. Tsis muaj kev tsis txaus siab nyob rau hauv tus txheej txheem d: tsis muaj txhuam los yog cov nplais hauv qhov txheej txheem ntawm kev tsim, uas yuav tsis ua rau lub pob txha los yog tsis ntub dej, lossis tsis muaj ntau tus ntxhiab tsw. Li ntawd, nws tuaj yeem npaj muaj kev nyab xeeb, nyab xeeb thiab muaj kev ua haujlwm zoo los tiv thaiv lub cev thiab lub paj hlwb ntawm cov tswv.
E. siv ib sab pwm: tsuas yog siv ib sab pwm tuaj yeem tau txais cov khoom sib luag thiab ob lub tiaj rau ob sab, uas yuav tswj tau qhov tuab ntawm cov khoom. Txuag pwm manufacturing raug nqi thiab sijhawm.
Nws yog vim zoo ntawm VIP cov khoom siv tshuab, thawj zaug siv rau hauv aerospace thiab lwm qhov chaw tshwj xeeb, thiab tom qab ntawd maj mam siv rau cov khoom siv pejxeem.
4. Kev khiav dej num khiav
Cov ntaub ntawv siv los ntawm VIP
resin
Thaum npaj rau qhov kev kuaj nqus nqus tsev, yuav tsum tau xaiv ua ntej, cov tshuaj uas tsim nyog, epoxy los yog unsaturated polyester. Kev cob qhia txog kev qhia txog kev nqus tsev nqus tsis tuaj yeem hloov tau los ntawm cov khoom siv li niaj zaus, uas muaj kev tshwj xeeb tshaj plaws rau viscosity, lub sij hawm nkag, exothermic peak thiab wettability. Thov sab laj rau tus neeg muab kev pabcuam rau cov ntsiab lus.
Txoj kev tua kab
Yog tias nws yog epoxy reag, siv tus cwj pwm coj sib txawv tshwj xeeb; Tus neeg sawv cev curing feem ntau siv rau hauv unsaturated resins yog methyl ethyl ketone peroxide. Sib txawv ntawm nws qhov kev zoo tsis zoo li qub, xaiv nws qhov kev ntsuam xyuas, tsis yog vim siv cov khoom siv tsawg thiab cuam tshuam rau qhov zoo ntawm tag nrho cov khoom.
Cov khoom siv zoo
Cov khoom siv cuab zog feem ntau siv cov iav fiber ntau thiab carbon fiber. Xws li cov ntawv cog lus nruab nrab, ib daim ntaub, thiab lwm yam., Qhov tshwj xeeb tsim raws li cov tshuab mechanics. Thaum xaiv, nws yog qhov zoo dua los ua ib qho kev sim, thiab ua li cas thiaj yog permeability? Vim hais tias txawv sizing cov neeg ua hauj lawm thiab adhesives siv nyob rau hauv kev tsim cov txheej txheem ntawm lub fiber yuav muaj ntau infiltration ntawm lub rein, ua rau muaj kev sib txawv hauv cov khoom sib txuas ntawm cov khoom kawg.
Sandwich cov ntaub ntawv
Feem ntau yog siv cov Balsa ntoo, PVC ua npuas dej, PUR / PIR ua npuas dej, muaj zog muaj zog thiab lwm yam. Xaiv cov ntaub ntawv kom tsim nyog raws li qhov xav tau ntawm cov khoom.
Cov khoom siv thiab cov ntaub ntawv pov thawj
Lub tshuab nqus tsev twj, lub nruab nrab, kev ntsuas siab, kev siv lub raj, kev pleev xim, kev taw qhia, lub hnab nqus thiab lwm yam. Cov ntaub ntawv siv nyob rau hauv lub tshuab nqus tsev ua tsis muaj txhij txhua, thiab txhua yam ntaub ntawv yuav tsum raug kuaj xyuas seb puas tsim nyog.
Kauj ruam 1: npaj cov pwm
Nqus cov kab mob hauv lub plab yuav tsum muaj lub pwm kom muaj qhov zoo, siab nto gloss thiab hardness, pwm ntug kawg 15 cm, yooj yim rau ntim sealing strip thiab pipeline. Ntxuav cov pwm
Ntxuav, ces siv los yog siv cov pwm dej.
Kauj ruam 2: kev tsim kho ntawm cov pob zeb diamond
Raws li cov kev cai ntawm cov khoom, xaiv cov tsim kua nplaum, tes txhuam los yog tshuaj tsuag. (qee yam khoom siv ncaj qha nteg nrog ntaub ntaub qhuav tsis ua cov xim tsho gelatine)
Kauj Ruam 3: siv cov ntaub ntawv ntxiv
Qhov kev xaiv ntawm cov cuab yeej siv yog nyob ntawm lub zog ntawm cov khoom siv (iav fiber, carbon fiber, sandwich khoom ..), cov ntaub ntawv sib txawv thiab cov hau kev weave yuav cuam tshuam lub pob ntau npaum li cas.
Kauj Ruam 4: Cov khoom siv nqus khoom nqus tsev
Ua tiav daim ntaub ntawv tsis muaj teeb meem, daim ntawv qhia nquag, nqa lub hnab ntim khoom ... Ua ntej kaw lub hnab ntim khoom noj, coj mus rau hauv koj tus menyuam qhov kev cob qhia thiab lub tshuab nqus tsev, los yog yuav muaj qhov phem tshwm sim. Kev kho mob yuav tsum tau noj thaum tso kom tsis txhob Thaj Plag lub hnab ntim nrog cov khoom ntse.
Kauj ruam 5: nqus tsev vacuum
Tom qab cov ntaub ntawv tso, clamp txhua lub ntxaib ntxig, pib nqus, sim siv cov cua hauv lub cev, thiab xyuas cov cua ceev ceev, cov kauj ruam no tseem ceeb heev, yog tias muaj cov ntsiab lus xau, thaum lub pob zeb pib, nkag mus rau hauv lub cev, npuas yuav nkag mus rau lwm qhov, thiab txawm tias tag nrho cov khoom yuav raug txiav.
Kauj ruam 6: sib tov cov tshuaj ntsuab
Tom qab lub tshuab nqus tau ncav tej yam tseev kom muaj, yuav pib npaj ua ntej.
Raws li qhov txawv gelation lub sij hawm ntawm resin, tus neeg sib cav sib ceg tau npaj tau.
Kauj ruam 7: ntshuam reini
Ntxig rau yeeb nkab rau hauv lub thoob, thiab qhib qhov clip hauv qab raws li qhov kev txiav txim ntawm kev pub mis. Them sai sai rau cov nyiaj ntawm lub thoob, thiab ntxiv sijhawm ntxiv.
Kauj ruam 8: demoulding
Thaum cov kua roj tawv txhuam hniav tuaj kho rau ib cov degree, cov khoom nqus tawm yog tshem tawm. Tshem cov khoom ntawm lub pwm thiab kev coj kho tom qab.
Tsis muaj tus txheej txheem yuav ua tau zoo tag nrho. Tam sim no, ib feem loj ntawm cov khoom siv uas yuav tsum tau siv los ntawm VIP yuav tsum raug xa mus rau cov nqi khoom siv, tab sis qhov no tuaj yeem ua kom zoo los ntawm kev txo cov nqi ntawm cov khoom siv. Tsis tas li ntawd, nws yuav tsum muaj kev txawj ntse ntawm cov tswv. Txhua txoj kev yuav tsum ua tib zoo saib xyuas kom taug mus rau theem tom ntej, thiab tsis muaj kev piam sij yuav ua rau.
Yog li no, tam sim no siv rau hauv cov nqi ntau dua FPR cov khoom thiab cov khoom, xws li cov khoom siv ua si, cov yachts, cua tshuab raj ua rau. Txawm li cas los xij, muaj kev xav tau ntau dua rau cov ntaub ntawv kawm siab dua, yog li ntau thiab ntau tus tib neeg pom thiab siv cov tshuab nqus tsev.