Vuam thiab kho cov yas hauv tsheb

Hauv cov tsheb niaj hnub no feem ntau, cov khoom siv hlau tau hloov los ntawm cov yas. Yog vim li cas yog qhov hnyav ntawm lub tsheb, txo cov roj noj, corrosion thiab, ntawm chav kawm, tus nqi qis. Thaum kho cov khoom siv yas tsheb, nws yog ib qho tsim nyog yuav tsum tau coj mus rau hauv tus account kev lag luam ntawm kev kho ib lossis lwm lub caij thiab kev ua haujlwm ntawm cov yas tom qab kho.

Cov txheej txheem kho yas

Qhov kev txiav txim ntawm kev ua haujlwm yog kev txheeb xyuas cov yas, tu, kho cov txheej txheem nws tus kheej, sealing, puag xim, pleev xim.

Kev qhia txog yas

Txoj hauv kev yooj yim tshaj plaws los txheeb xyuas cov yas yog tig nws dua thiab saib sab hauv rau cov neeg tsim khoom lub cim. Tom qab ntawd nrhiav cov cim no hauv cov lus txuas (Reference Chart for Plastic Repair) thiab, nyob rau hauv rooj plaub ntawm ob peb txoj kev kho, xaiv qhov zoo tshaj plaws haum rau koj. Yog tias nws tsis tuaj yeem txheeb xyuas cov yas los ntawm cov cim, nws yog qhov nyuaj heev los txiav txim siab txog txoj kev kho, qhov no yuav tsum muaj cov kws paub txog kev paub ntau yam hauv thaj chaw uas tuaj yeem xaiv txoj kev kho kom tsim nyog rau ib feem.

Plastics Kho Cov Lus Siv

Kev tu saum npoo av ua ntej kho

Txhawm rau ua tiav lub zog kho kom zoo thiab lub neej ua haujlwm ntev ntawm ib feem raug kho, nws yog ib qho tseem ceeb uas yuav tsum tau ua kom huv huv ntawm qhov chaw los ntawm ntau yam kab mob, tshwj xeeb tshaj yog nyob rau ntawm qhov chaw uas tau npaj kho.

Kauj ruam tsis 1: Ntxuav ob sab ntawm ib feem nrog xab npum thiab dej thiab qhuav nrog ntawv lossis cua tshuab.

Kauj ruam tsis 2: Txau thaj chaw kho nrog lub tshuab ntxhua khaub ncaws zoo tshaj (degreaser) thiab so nrog daim ntaub qhuav. Ib txwm quav cov phuam nrog ntu tshiab. Ib txwm so hauv ib qho kev taw qhia. Cov txheej txheem no zam kev nkag los ntawm cov av mus rau hauv qhov uas tau ntxuav.

Kev xaiv kho yas

Kho kho dua

Yog tias cov nplaim npog, peb siv rab phom kub los kho qhov chaw puas. Thaum cua sov yas, nws yog ib qho tseem ceeb kom sov nws kom sov. Kub zoo txhais tau tias tuav rab phom cua sov ntawm ib sab kom txog thaum sab nraud kub heev uas nws tsis tuaj yeem tuav hauv koj txhais tes. Tom qab cov yas ua kom sov zoo, nias qhov uas puas nrog cov ntoo nyob hauv qhov chaw raug thiab ua kom txias thiab ntxuav qhov chaw (koj tuaj yeem txias nws nrog cov pa cua lossis cov ntaub ntub dej).

Thermosetting plastics - polyurethanes (PUR, RIM) - yog cov yas nrog lub cim xeeb, ua tsaug uas lawv tau rov qab mus rau lawv qhov qub qub tom qab cua sov nrog rab phom kub lossis hauv lub thawv xim.

Kho cov thermosetting yas los ntawm cov yas uranium.

Automotive urethane lossis PUR yog cov khoom siv cua sov. Hauv nws cov khoom siv, cov tshuaj tiv thaiv yog siv zoo ib yam li siv thaum sib xyaw cov sealant nrog lub hardener - uas yog, 2 cov khoom ua kua ua ke thiab ib qho khoom tivthaiv yog tsim yam tsis muaj peev xwm rov qab mus rau nws qhov qub. Vim li no, yas tsis tuaj yeem yaj. Nws yog tsis yooj yim sua kom yaj yas los ntawm ib tug welder. Txoj kev txhim khu kev qha tshaj plaws los qhia yog tias lub bumper yog polyurethane yog siv lub welder kub taub hau rau sab nraum qab ntawm lub bumper. Yog tias nws yog urethane, cov yas yuav pib yaj, npuas, thiab haus luam yeeb (tus welder yuav tsum tau kub heev los ua qhov no). Tom qab etched nto tau txias, cov yas tseem tacky rau qhov kov. Qhov no yog ib qho cim qhia tias qhov kub thiab txias tau ua rau cov qauv ntawm cov molecules hauv cov yas puas. Thermoset urethanes tuaj yeem kho tau yooj yim nrog lub vuam tsis muaj cua, tab sis kev kho yuav ntau dua nrog cov kua nplaum kub dua nrog vuam (fusing tus pas nrig thiab nraub qaum).

Kev npaj V-grooves hauv thaj chaw puas

Peb ncaj thiab lo cov khoom puas nrog daim kab xev aluminium. Rau cov cheeb tsam loj, ruaj ntseg nrog kev tuav nruj. Koj tseem tuaj yeem koom nrog ntu nrog cov kua nplaum tam sim (piv txwv li hom 2200). Nyob rau sab nraum qab ntawm qhov yuav tsum tau kho, peb zeb V-zawj ntawm lub tshuab milling. Peb tsis tuaj yeem siv cov lus qhia sov sov siv lub tshuab milling rau cov txheej txheem no vim cov khoom siv tsis raug. Xuab zeb V-zawj nrog ntawv txhuam (z = 80) lossis txawm tias coarser. Los ntawm kev txhuam cov nplaim, peb tau txais ntau qhov zawj hauv thaj chaw milled. Tsis tas li nyob rau thaj tsam V-zawj, tshem cov kua roj vanish thiab muag cov npoo ntawm V-zawj kom qhov kev hloov pauv ntawm qhov chaw thiab V-zawj du.

Txiav tus pas nrig rau hauv V-zawj

Qhov ntsuas kub ntawm lub tshuab vuam yuav tsum tau teeb tsa siv tus tswj hwm sib xws rau tus pas nrig pob tshab (R1). Siv tus pas nrig polyurethane 5003R1, peb tau ua tiav qhov tseeb tias thaum tawm ntawm lub khau txuas, tus pas nrig yuav tsum tawm hauv lub xeev ua kua, txhais tau tias tsis muaj npuas. Tuav lub vuam khau hla saum npoo kom tau welded thiab nias tus pas nrig sib dhos rau hauv V-zawj nrog nws. Peb tsis ua kom sov cov khoom tseem ceeb, tab sis ncuav lub pas nrig txuas rau nws saum npoo. Tsis txhob cuam tshuam cov qia nrog lub bumper. Cia peb tsis txhob hnov ​​qab tias urethane tsis yaj. Tsis txhob ntxiv ntau tshaj li 50 hli ntawm ib lub sijhawm. Peb nqa tus pas tawm ntawm khau thiab ua ntej cov nplaum rau hauv qhov zawj txias, ua kom nws nto nrog cov khau kub.

Kev npaj V-grooves ntawm sab nraud

Tom qab qhov txuas ntawm sab nraub qaum tau txias dua, rov ua V-zawj, txhuam thiab vuam ntawm sab nraud.

Sib tsoo cov hlau txuas kom du

Siv cov ntawv ntxhib, xuab zeb txuas rau qhov chaw du. Cov urethane sib koom ua ke tsis tuaj yeem ua cov xuab zeb zoo, yog li lub tsho khi yuav tsum tau siv rau saum npoo los kho. Tshem tawm cov ntaub ntawv ntau me ntsis los ntawm cov xaum xaum kom lub foob foob npog tag nrho saum npoo tusyees.

Kho cov yas los ntawm kev siv vuam

Nrog rau kev zam ntawm urethane, tag nrho cov bumpers thiab feem ntau automotive plastics yog tsim los ntawm thermoplastics. Qhov no txhais tau tias lawv tuaj yeem yaj tau thaum cua sov. Thermoplastic qhov chaw yog tsim los ntawm melting yas hlaws thiab txhaj cov khoom ua kua rau hauv pwm qhov chaw uas lawv txias thiab solidify. Qhov no txhais tau tias cov thermoplastics yog fusible. Feem ntau ntawm cov bumpers tsim yog ua los ntawm cov khoom siv TPO. TPO tau dhau los ua cov khoom siv nrov rau kev tsim cov khoom siv sab hauv thiab cov cav tov. TPO tuaj yeem welded siv fusion technology los yog ib qho tshwj xeeb Fibreflex fiber pas nrig uas ua rau cov vuam ntau ruaj. Peb cov khoom siv nrov tshaj plaws yog Xenoy, uas yog qhov zoo tshaj plaws welded.

Kev npaj V-grooves hauv thaj chaw puas

Peb ncaj thiab lo cov khoom puas nrog daim kab xev aluminium. Rau cov cheeb tsam loj, tiv thaiv lawv nrog kev tuav nruj. Peb kuj tuaj yeem koom nrog cov ntu nrog hom thib ob 2200. Tom qab ntawm qhov kho qhov chaw, peb zeb V-zawj ntawm lub tshuab milling. Rau cov txheej txheem no, peb tuaj yeem siv lub tswv yim sov sov tsis txhob siv lub tshuab milling, vim tias cov khoom siv fusible. Tshem cov xim nyob ib puag ncig qhov kev npaj kho los ntawm txhais tes txhuam thiab tshem cov chamfer nruab nrab ntawm qhov chaw thiab V-zawj.

Sib tov cov tub ntxhais nrog cov khoom siv hauv paus

Peb teeb tsa qhov ntsuas kub ntawm lub tshuab vuam kom haum rau tus pas nrig uas tau xaiv, uas peb txiav txim siab thaum lub sijhawm txheeb xyuas. Feem ntau, cov pas nrig txuas nrog cov ntaub qhwv yuav tsum tawm huv thiab tsis muaj xim. Tsuas yog qhov tshwj xeeb yuav yog nylon, uas hloov pauv mus rau xim av daj. Muab cov khau txuas rau ntawm lub hauv paus thiab maj mam ntxig tus pas nrig rau hauv V-zawj. Peb maj mam thawb tus pas nrig rau pem hauv ntej kom peb tuaj yeem pom tom qab peb V-puab qhov zawj nrog cov khoom no. Qhov siab tshaj ntawm 50 hli vuam pas nrig hauv ib txheej txheem. Peb nqa tus pas tawm ntawm khau thiab, ua ntej tus pas txias, ua tib zoo thawb thiab muab cov khoom sib xyaw ua ke. Ib qho cuab yeej zoo yog ntug ntawm lub khau, nrog rau peb fuse cov zawj rau hauv cov khoom siv hauv paus thiab tom qab ntawd muab lawv sib xyaw. Ua kom lub ntsej muag maj mam maj mam nrog cov lus qhia kub. Tawm qhov taub kub thoob plaws txoj kev sib tov.

Kev npaj V-zawj thiab sab rov qab vuam

Tom qab sab nraub qaum tau txias tag, peb rov ua cov txheej txheem ntawm kev npaj V-puab cov zawj, sib tsoo thiab vuam rau sab xub ntiag.

Sib tsoo welds

Siv cov ntawv ntxhib, xuab zeb txuas rau qhov chaw du. Tshem tawm cov khoom siv me ntsis los ntawm kev txhuam los txhawm rau kom lub foob foob npog tag nrho saum npoo tusyees.

Kho nrog Uni-Weld thiab Fiberflex daim kab xev

Universal Welding Qws yog cov khoom siv kho tshwj xeeb uas tuaj yeem siv rau txhua yam yas. Nws tsis yog ib qho welding tiag tiag, nws yog ntau dua ntawm cov kua nplaum kub. Thaum peb kho tus pas no, peb yuav siv lub tshav kub ntawm lub welder, theej rau nws cov khoom nplaum. Ib tug pas nrig zoo li Fiberflex sawb muaj cov qauv muaj zog heev. Nws yog txhawb nrog carbon thiab fiberglass kom muaj zog ntxiv. Fiberflex yog cov tshuaj zoo tshaj plaws rau TPO (tseem TEO, PP / EPDM) kho i.e. cov ntaub ntawv uas feem ntau siv rau bumpers. Fiberflex tuaj yeem siv los kho txhua hom yas. Nws tuaj yeem lo rau urethanes thiab xenos. Yog tias peb tsis paub meej tias cov yas uas peb vuam, peb tsuas yog siv Fiberflex. Lwm qhov txiaj ntsig ntawm Fiberflex yog nws cov fusibility. Cov qauv zoo ntawm cov weld minimizes kev siv cov sealant.

Kev npaj V-grooves hauv thaj chaw puas

Peb ncaj thiab lo cov khoom puas nrog daim kab xev aluminium, txhim kho lawv nrog cov clamp clamps ntawm thaj chaw loj.Koj tseem tuaj yeem txuas cov ntu nrog hom thib ob 2200 kua nplaum. Qhov dav ntawm V-puab thais yuav tsum yog 25-30 hli. Nws yog ib qho tseem ceeb heev uas yuav tsum tau xuab zeb saum npoo av es tsis txhob siv V-zawj nrog cov ntawv xuab zeb (qhov loj me kwv yees li 60.) Yog tias peb siv lub tshuab ua kom lub ntsej muag sib tsoo rau kev sib tsoo, peb yuav txo qhov nrawm mus rau qhov tsawg kawg nkaus kom tiv thaiv cov khoom siv uas cov thermoplastics rhiab heev. Siv cov ntawv xuab zeb (z = 80), tshem cov kua roj vanish los ntawm tag nrho saum npoo los kho thiab txiav ib ntug ntawm V-zawj thiab nto. Qhov no tso cai rau peb kom kis tau zoo dua thiab nias kab ntawv Fiberflex ntawm qhov chaw kho.

Fiberflex daim kab xev yaj

Teem lub tshuab vuam mus rau qhov kub tshaj plaws tuaj yeem hloov pauv thiab hloov lub khau vuam nrog lub ncoo yaj (tsis muaj raj qhia). Nws yog qhov zoo tshaj plaws los so ib sab ntawm Fiberflex sawb nrog cov dej kub kom yaj nws ib nrab thiab thov tam sim ntawd rau cov substrate. Cais qhov glued ib sab nrog ntug ntawm cov phaj kub los ntawm qhov seem ntawm cov kauj. Tom qab ntawd yaj cov hlua hauv V-zawj. Peb tsis tau sim sib xyaw cov khoom siv hauv paus nrog Fiberflex. Txoj kev no zoo ib yam li cov kua nplaum kub.

Kev npaj V-grooves thiab vuam ntawm lub ntsej muag

Tom qab Fiberflex nyob tom qab tau txias dua (peb tseem tuaj yeem ua kom nrawm dua nrog cov dej txias), rov ua dua qhov sib tsoo, sib tsoo thiab vuam txheej txheem. Koj tseem tuaj yeem thov txheej txheej me me ntawm Fiberflex vim nws zom tau zoo.

Sib tsoo

Thaum Fiberflex txuas tau txias lawm, pib los ntawm sanding (z = 80) thiab qeeb qeeb. Ua kom tiav cov txheej txheem sanding (ntawv z = 320). Txhua qhov tsis xws luag yuav tsum tau ntim nrog cov nplaum.

Kho cov khoom tawg

Ntau lub TEO bumpers muaj cov hlua khi uas yuav tsum tau hloov pauv kom yooj yim rau kev teeb tsa. Cov qauv no tuaj yeem kho tau zoo heev nrog daim phiaj hlau stainless thiab fiberflex. Ua ntej, roughen lub nto nrog ib tug rotary sander. Los ntawm stainless hlau mesh, peb yuav txiav tawm ib feem uas zoo tagnrho rau kev txuas lub console thiab lub hauv paus ntawm ob sab. Nrog lub hau kub, nias cov khoom no rau hauv cov yas. Tom qab melting thiab txias, xuab zeb nto nrog daim ntawv kom tshem tawm cov ci ntsa iab. Etch Fiberflex stick rau ntawm qhov chaw kho. Nrog rau qhov kev kho no, lub mesh lav lub zog thiab yoog raws, thiab cov pas nrig fiber ntau tsuas yog txheej txheej kom zoo nkauj xwb.

Kho yas nrog cov kua nplaum tam sim

Txij li cov nplaum thib ob tsim cov ntawv cog lus nyuaj, lawv nyiam rau kev kho cov yas xws li ABS, PC, SMC, tawv yas. Lawv kuj tsim nyog rau qhov chaw koom nrog cov khoom los ntawm kev kho lawv ua ntej vuam.

Kev kho sai ntawm cov kab nrib pleb

Qhov muaj feem thib ntawm kev koom nrog yog txhawm rau maj mam tsuag cov ntu kom koom nrog tus ua haujlwm. Peb nruab thiab txuas cov khoom. Siv 6481 txhuas daim kab xev. Rau qhov loj, siv cov clamps kom ntseeg tau tias cov khoom raug tuav nyob hauv qhov chaw thaum sib txuas. Muab me me ntawm cov kua nplaum tam sim los txhawm rau txhawm. Cov txiaj ntsig zoo tshaj plaws tau ua tiav nrog qhov tsawg kawg nkaus ntawm cov nplaum uas siv rau qhov sib koom tes. Cov kua nplaum yog nyias txaus kom nkag mus rau qhov tawg. Txau tshuaj ntxiv ntawm cov tshuaj ua kom ua tiav cov txheej txheem thiab cov qhov me me.

Sau cov grooves thiab qhov

Peb kaw lub qhov hauv qab nrog daim kab xev txhuas. Npaj V-nqis siab ib ncig ntawm ib puag ncig ntawm lub qhov thiab xuab zeb nws thiab thaj chaw ib puag ncig los ntawm tshuab cov hmoov av. Txau thaj chaw kom kho me ntsis nrog tus neeg ua haujlwm. Sau lub qhov nrog tso quav thiab siv ob peb tee kua nplaum. Peb qib thiab nias cov kua nplaum rau hauv lub foob nrog cov cuab yeej ntse. Tom qab 5-10 vib nas this, thov txheej txheej ntawm lub tshuab ua kom pom kev. Qhov saum npoo tuaj yeem xuab zeb thiab drilled tam sim.

Kev kho cov yas uas muaj ob yam tivthaiv epoxy cob

Xuab zeb rov qab ntawm qhov chaw kho nrog cov ntawv xuab zeb (z = 50 lossis tuab dua). Qhov sib sib zog nqus grooves tom qab sib tsoo yog lub hauv paus zoo rau kev sib txuas zoo. Tom qab ntawd maj mam xuab zeb rau saum npoo nrog daim ntawv (z = 80), uas kuj ua rau kev sib raug zoo dua. Yog tias TEO, TPO lossis PP khoom siv, peb yuav tsum siv 1060FP hom thaub qab nplaum. Tshaj tawm cov khoom nrog txhuam rau ntawm qhov chaw sanded thiab cia qhuav. Peb yuam fiberglass raws tag nrho ntev ntawm qhov puas. Yog hais tias ib seem ntawm SMC yog folded nyob rau hauv ib tug tawg nrog lwm seem seem uas yog ua los ntawm SMC, xyuas kom meej tias qhov sib tshooj seem tshaj qhov kev puas tsuaj nyob rau hauv txhua qhov kev taw qhia los ntawm tsawg kawg yog 0,5 hli. Peb yuav xaiv ib tug haum ob-tivthaiv nplaum uas feem ntau zoo li qhov yuav tsum tau glued:

• Filler 2000 Flex (txho) yoog raws
• 2010 Qhov nruab nrab hloov pauv hloov pauv tau yooj yim (liab)
• 2020 SMC Hardset Filler (Grey) Nyuaj
• 2021 Hard filler (daj) tawv

Sib tov epoxy txaus. Thov ib txheej los npog daim kab xev nrog cov fibers thiab cia nws kom qhuav yam tsawg 15 feeb. Ntawm SMC, peb tsim txheej txheej ntawm cov kua nplaum rau qhov txhawb nqa, uas tom qab ntawd peb nias mus rau hauv lub txaj npaj. Hauv qhov no, cia cov kua nplaum qhuav tsawg kawg 20 feeb. Xuab zeb lub ntsej muag ntawm ib feem puas nrog ntawv (z = 50) thiab xuab zeb V-zawj hauv qhov tawg. Qhov ntev thiab tob dua qhov zawj no, muaj kev sib txuas zoo dua. Chamfer cov npoo ntawm V groove, xuab zeb saum npoo nrog ntawv (z = 80). Sib tov thiab siv txheej txheej ntawm epoxy nplaum thiab hloov nws kom nws nthuav tawm dhau qhov ib puag ncig. Cia kom qhuav yam tsawg 20 feeb. Tsuas yog thaum ntawd peb yuav pib sib tsoo. Siv SMC, peb ntxig daim ntaub ntau yam fiberglass rau hauv V-zawj thiab nruab nrab ntawm ib txheej ntawm cov nplaum. Siv cov menyuam tig, peb ua tib zoo nias cov ntaub rau hauv cov kua nplaum thiab thawb tawm cov huab cua tsis xav tau. Peb ua cov av qhuav nrog cov ntawv txhuam (z = 80, tom qab z = 180).

Ua tsaug ntau

Xuab zeb nto yuav tsum tau xuab zeb nrog cov ntawv ntxhib. Npaj me me V-zawj ntawm qhov chaw puas. Txhua qhov ci ntsa iab yuav tsum tau muab tshem tawm ua ntej thov lub foob, txwv tsis pub cov nplaum zoo yuav tsis tshwm sim. Yog tias cov khoom siv yog polyolefin (PP, PE, TEO lossis TPO roj-based yas), peb siv cov nplaum nplaum uas ua pa tau zoo. Peb xaiv qhov tsim nyog epoxy sealant uas haum rau qhov yooj ntawm cov khoom siv hauv paus. Yog tias hloov tau, siv 2000 Flex Filler 2 lossis 2010 Semi-flexible Adhesive.Yog nyuaj, siv 2020 SMC Rigid Kit lossis 2021 Rigid Filler. Muab cov tshuaj epoxy sealant sib xyaw. Peb yuav tsim txheej txheej txheej txheej me me kom siab dua ib puag ncig. Peb tsis pib xuab zeb ua ntej tshaj li 20 feeb, rau kev xuab zeb peb siv cov ntawv nrog qhov loj me (z = 80, tom qab ntawd 180).

Kev kho saum npoo av nrog tus primer ua ntej thov pleev xim rau

Yog tias cov khoom siv yog ib nrab olefin (TEO, TPO, lossis PP), siv cov nplaum rov qab rau txhua qhov pleev xim raws li cov txheej txheem tau hais tseg hauv daim ntawv lo khoom. Ntawm qhov chaw yuav raug kho, siv cov tshuaj tsuag txau cov xim txho lossis xim dub hauv cov txheej nyias nyias. Tom qab ziab, txhuam cov av nrog cov ntawv txhuam (z = 320-400).

Daim ntawv thov xim yooj ywm

Tom qab txhuam lub hauv paus, tshuab plua plav, siv cov khoom uas ua kom du tawm txhua qhov khawb ntawm qhov chaw kom kho. Sib tov cov khoom nrog cov xim tsis muaj xim. Tom qab ntawd peb sib tov cov xim nrog cov ntawv me dua, siv nws rau tag nrho saum npoo ntawm lub vaj huam sib luag raws li cov chaw tsim khoom qhia, zam qhov chaw txau. Txhawm rau ua kom tiav cov qauv zoo ntawm cov yas, peb siv cov tshuaj tsuag xim dub hloov pauv.

Thaum kho cov yas yas hauv tsheb, peb yuav tsum coj mus rau hauv tus account, ua ntej tshaj plaws, cov txheej txheem ntawm qhov muaj peev xwm kho tau thiab kev tshuaj xyuas ntawm kev kho tau ua los ntawm kev pom zoo ntawm kev lag luam. Qee lub sij hawm nws nrawm dua, yooj yim dua thiab pheej yig dua los yuav cov yas uas tau siv hauv qhov zoo.