Ib lub ntsia hlau rau PS ua npuas ncauj yuav tsum raug txiav txim los ntawm cov khoom yaj thiab ua npuas ncauj nws pab tag nrho cov kab xa tawm - tsis yog los ntawm txoj kab uas hla, L / D los yog kev thov ntawm "siab sib xyaw" hauv kev sib cais.
Teb ceev
Qhia meej PS foaming ib qho ntsia hlau los ntawm kev hais txog daim ntawv pub khoom noj thiab daim ntawv qhia, dab tsi yuav tsum tau yaj thiab sib xyaw ua ntej roj nthuav dav, lub thoob uas twb muaj lawm thiab tuag cuam tshuam, thiab cov khoom ua npuas dej ntsuas qhov kev lees paub. Nanhaiya uaPS foaming ib leeg ntsia hlausiv lub tswv yim tsim L / D ntev dua, ntu pub khoom siv los txav PS thiab cov neeg ua haujlwm nucleating, thiab xaiv Maddock-hom lossis tus pin sib xyaw seem. Tsis muaj ib qho ntawm cov yam ntxwv no hloov pauv rau koj cov ntaub ntawv kab tiag tiag.
1. Ua ntej, txhais cov haujlwm PS foaming uas koj tab tom yuav
"PS ua npuas ncauj" tsis yog tag nrho cov ntsia hlau specification. Ib txoj kab ua daim ntawv thiab ib txoj kab ua cov hniav zoo nkauj tuaj yeem sib koom cov tsev neeg resin tsis tau xav tau cov khoom sib txawv, tuag siab, txias thiab cov khoom kuaj xyuas. Nanhaiya teev PS ua npuas ncauj ntawm nwsdaim ntawv thov ib leeg-ntsia hlau; nws PS foaming ntsia hlau nplooj kuj tham txog cov hniav qab nthab strips.
Qhia rau tus neeg muag khoom ntsia hlau seb puas pub pub yog nkauj xwb PS pellets, rov ua dua, lwm daim ntawv rov ua dua lossis ib qho kev tswj xyuas. Muab cov qhabnias tiag tiag, cov ntsiab lus rov ua dua tshiab, tus neeg sawv cev nucleating thiab lwm yam khoom ntxiv. Qhia lub tshuab tshuab thiab qhov twg nws nkag mus rau hauv cov txheej txheem. Kev txiav txim siab tsim qauv tsim rau ib txoj hauv kev yuav tsum tsis txhob ntsiag to yuav tsum ua haujlwm rau lwm tus.
Peb lub Hoobkas-sab txoj cai:Kuv xav pom cov khoom thiab cov khoom noj ntawm tib RFQ. Yog tias tus neeg yuav khoom xa tsuas yog "PS foaming, 90 mm ntsia hlau," peb tuaj yeem sib tham txog txoj kab uas hla, tab sis tsis yog tus cwj pwm pub mis, kev sib xyaw ua haujlwm lossis yuav muaj kev txwv ua ntej tuag. Qhov kev sib tham muaj txiaj ntsig pib thaum tus neeg teb xov tooj cov tswv yim tiag tiag nyob rau ntawm nplooj ntawv.
| Qhia tus kws tsim cov ntsia hlau | Vim li cas nws hloov qhov kev sib tham tsim |
|---|---|
| Khoom: ntawv lossis profile; lub hom phiaj qhov ntev thiab pom qhov ntom ntom | Txhais qhov yuav tsum nyob ruaj khov tom qab yaj tawm ntawm qhov tuag. |
| Virgin/recycled PS piv thiab pub daim ntawv | Hloov pauv kev xa khoom hopper thiab seb cov channel puv li cas. |
| Nucleating tus neeg sawv cev thiab lwm yam khoom | Teem lub dispersion thiab hnav lo lus nug, tsis yog lub npe resin xwb. |
| Tshuab-system hom thiab taw qhia taw tes | Txiav txim seb qhov txheej txheem twg yuav tsum tau npaj ua ntej nthuav dav. |
| Lub tshuab uas twb muaj lawm, chim, tuag thiab tso tawm lub hom phiaj | Bounds qhov muaj geometry, siab thiab khiav qhov rais. |
2. Cov khoom noj yuav tsum tau saib xyuas ntau dua li daim ntawv teev npe L/D
Nanhaiya's PS foaming khoom nplooj piav qhia txog qhov tob dua hauv seem pub rau thauj cov khoom PS, tshwj xeeb tshaj yog cov khoom siv rov ua dua tshiab, thiab cov khoom siv nucleating xws li talcum hmoov. The point is practical: a downstream mixer cannot repair a feed rate that changes every time the regrind bulk density changes or the hopper bridges.
Ua ntej hloov cov ntsia hlau, saib seb lub caj pas pub puas tau muab los ntawm tus nqi tsis tu ncua. Sau cov khoom sib tov, hopper cwj pwm, ntsia hlau ceev thiab lub cev muaj zog load thaum lub sij hawm tsim khoom zoo thiab tsis zoo. Yog tias qhov teeb meem pib ntawm lub hopper, kho qhov khoom siv ua ntej nug lub davhlau tshiab kom zais nws.
Rau kev hloov pauv, sib piv cov ntsia hlau qub nrog lub tshuab kos duab ntawm lub caj pas pub, chim bore, shank thiab tso tawm kawg. Yog tias cov ntsia hlau qub hnav, daim qauv ntawm lub cev ntawm nws lub davhlau tuaj yeem luam qhov hnav thiab. Pebhloov ib leeg-ntsia hlau ntsuas phau ntawv qhiapiav qhia vim li cas cov ntaub ntawv siv tshuab tseem ceeb npaum li qhov raug tshem tawm.
3. Xaiv qhov sib tov rau qhov teeb meem ntsuas
CovNanhaiya cov khoom tsimmuab qhov barrier-hom Maddock mixing seem los yog tus pin sib xyaw seem ze rau qhov kawg ntawm compression lossis metering. Nws kuj piav qhia txog qhov L / D ntev dua thiab qhov sib xyaw ua haujlwm tau zoo. Cov no yog cov kev xaiv tsim, tsis yog pov thawj tias ib qho geometry ruaj khov haum rau txhua PS ua npuas ncauj kab.
Nyob rau hauv cov txheej txheem ua npuas dej, cov dej ntws ntws yuav tsum zoo ib yam txaus rau cov dej ntws hauv qab foaming thiab shaping cov kauj ruam. Cov khoom tawg tsis zoo, cov khoom siv tsis sib xws lossis qhov hloov pauv kub tuaj yeem tshwm sim hauv cov khoom tiav. Tab sis ntxiv kev sib xyaw yam tsis tau kawm txog kab tuaj yeem ua rau muaj kev xav tau siab thiab thermal raug. Lo lus nug tsis yog "Lub tshuab hluav taws xob twg muaj zog dua?" Nws yog "Dab tsi yog qhov teeb meem tam sim no, thiab qhov twg nws tshwm sim thawj zaug?"
Thaum twg los tham txog Maddock-type section
Nug txog nws thaum melt uniformity yog qhov sib txawv. Qhia cov resin thiab regrind cov ntsiab lus, pov thawj ntawm unmelt, tam sim no yaj ntsuas thiab lub siab margin lub tshuab tuaj yeem txhawb nqa.
Thaum twg los tham txog ntu tus pin
Nug seb nws yuav faib cov pob khoom ntxiv li cas thiab nws ua li cas rau lub siab, ntxuav tawm thiab kub keeb kwm. Ib tus pin seem yog kev txiav txim siab tsim, tsis yog kev hloov kho tsis siv neeg.
Thaum twg tawm hauv lub tshuab tov khoom ib leeg
Yog tias tus nqi pub, roj ntxiv, tuag lossis txias tsis ruaj khov, hloov lub tov khoom yuav tsis hloov thawj qhov ua rau. Tsim kom muaj lub hauv paus pib ua ntej rov tsim cov ntsia hlau.
Nanhaiya cov lus qhia dav dav rauntsia hlau ceev, yaj kub thiab tso zisNws yog ib qho tseem ceeb ntawm no: txav qhov ceev dial hloov ntau tshaj li kilograms ib teev. Rau PS ua npuas ncauj RFQ, sau lub qhov rais ua haujlwm es tsis yog lub tshuab qhov siab tshaj plaws RPM xwb.
Kev lag luam tawm peb yuav muab tso rau hauv kev tshuaj xyuas kos duab:yog tias ntau shear txhim kho melting tab sis nce qhov ntsuas kub ntawm qhov ntsuas kub dhau ntawm kab qhov rais ua haujlwm, qhov ntawd tsis yog qhov yeej. Sib piv tag nrho cov txheej txheem tshwm sim - yaj mob, siab thiab ua npuas ncauj - tsis yog qhov sib xyaw ua ke ib leeg.
4. Cov ntsia hlau yog ib feem ntawm PS ua npuas ncauj system
Cov ntsia hlau thiab lub thoob yuav tsum haum rau ib leeg, tab sis lawv kuj tau muab cov khoom siv rau lub lim dej, roj-kev taw qhia qhov chaw siv, tuag thiab cov khoom cua txias. Thaum tus neeg yuav khoom thov kom peb lav qhov ua npuas ncauj ntom ntom los ntawm cov ntsia hlau kos duab ib leeg, kuv yuav tsum tso tseg qhov kev cog lus ntawd. Lub luag haujlwm kev yuav khoom tshwj xeeb khi cov ntsia hlau rau cov khoom siv thiab cov txheej txheem tswj uas ua raws li nws.
Txheeb xyuas qhov sib txuas, qhov ntev tag nrho, lub thoob hauv txoj kab uas hla, qhov chaw pub khoom, qhov chaw tswj qhov kub thiab txias thiab muaj cov khoom thauj khoom. Daim ntawv qhia kev txhaj tshuaj lossis qhov chaw nres nkoj ntawm lub thoob uas twb muaj lawm. Nug leej twg muab lub thoob mating thiab seb nws puas tau rov qab siv dua; ib tug tshiab ntsia hlau tiv thaiv ib tug puas bore yuav ua rau ib tug hloov zoo dua nws yog.
Nanhaiya uaib leeg-ntsia hlau qebTshaj tawm cov qauv dav dav rau L / D, tso zis, ceev thiab lub cev muaj zog. Cov no yog cov pib catalog, tsis yog PS-ua npuas ncauj kev ua haujlwm lav. Hloov cov khoom ua haujlwm rau hauv cov kab tshwj xeeb lub hom phiaj, tom qab ntawd paub meej tias qhov kev xaiv geometry thiab tso cai rau kev khiav hauj lwm qhov rai ntawm qhov kev txiav txim kos duab.
Ib qho txiaj ntsig Hoobkas nqe lus nug:Qhov twg yog qhov qub system poob tswj thawj zaug - ntawm pub, hauv yaj, thaum tuag, lossis tom qab tuag? Yog tias peb tsis tuaj yeem teb qhov ntawd, tus ntsia hlau kim tshiab tuaj yeem dhau los ua cov ntawv luam zoo heev ntawm kev daws teeb meem.
5. Nyeem ua npuas ncauj tsis xws luag raws li cov lus qhia, tsis siv cov ntsia hlau tsis zoo
Kev hloov ceev los yog qhov chaw tsis zoo tuaj yeem yog cov tsos mob ntawm cov ntsia hlau. Nws tuaj yeem pib nrog resin, dosing, siab, xa roj, tuag lossis txias. Siv thawj qhov kev hloov pauv kom nqaim qhov ua rau. Yog tias cov txheej txheem hloov pauv tsis ntev los no, muab piv nrog cov ntawv sau ua haujlwm zoo ua ntej xaj qhov tshiab.
| Pom teeb meem | Tshawb xyuas ua ntej | Thaum cov ntsia hlau tsim nyog saib ze dua |
|---|---|---|
| Pom pom qhov ntom ntom drifts thaum khiav | Pub huab hwm coj, sib tov, xa roj, ntsuas kub, tuag thiab txias txias | Cov inputs ruaj khov tab sis cov zis los yog siab hloov nrog ntsuas cov ntsia hlau / chim hnav. |
| Unmelt los yog pom specks | Resin contamination, regrind loj, ntsuas kub thiab ntsuas qhov ntsuas | Inputs yog huv si thiab ruaj khov, tab sis yaj sampling qhia persistent tsis txaus melting. |
| Siab surges | Hopper bridging, pub dosing, gas system thiab tshuaj ntsuam txwv | Upstream mov thiab downstream txwv yog tswj, thaum hnav los yog geometry piav txog qhov surge. |
| Cov tawv nqaij tawg lossis cov hlwb tsis zoo | Formulation, gas tswj, tuag qhov sib txawv, cua txias thiab puller tej yam kev mob | Melt keeb kwm tsis sib haum ua ntej tuag tom qab lwm yam ua rau raug tshem tawm. |
| Pem taub hau ceev ceev | Regrind contamination, solids content, chim alignment thiab qub hnav daim ntawv qhia | Kev ntsuas nrhiav ib cheeb tsam rov ua dua uas yuav tsum tau hloov qhov kev tsim kho. |
Yog tias cov khib nyiab abrasive lossis cov khoom siv rov ua dua yog ib feem ntawm lub luag haujlwm, tshuaj xyuas qhov kev tsim kho saum npoo nrog rau kev tsim dav hlau. Nanhaiya uasuper hnav-resistant ib leeg ntsia hlaunthuav tawm cov kev xaiv hnav-resistant. Ib qho nyuaj saum npoo yog qhov tseem ceeb tsuas yog tias nws tiv thaiv thaj tsam uas hnav tiag tiag thiab tseem sib haum nrog lwm lub rooj sib txoos.
6. Tig lub RFQ mus rau hauv kev yuav khoom kuaj
Kev pom zoo kos duab ua pov thawj qhov ntev thiab kev tsim kho, tsis yog cov khoom lag luam ntawm nws tus kheej. Sau ib daim phiaj xwm luv luv ua ntej ua ntu. Rau PS ua npuas ncauj, hais txog cov khoom zoo, lub hom phiaj ntawm kev xa tawm, kev tsim khoom noj, lub qhov rais ua haujlwm thiab yuav siv pes tsawg tus qauv ruaj khov. Pom zoo leej twg muab cov ntaub ntawv siv thiab sau cov kab mob.
Rau cellular plastics,ISO 845 Covmuab ib txoj hauv kev kom pom qhov ntom ntom. Nws distinguishes tag nrho thiab core ntom qhov twg qhov tseem ceeb.ISO 1923 Kev Tswj Xyuasnpog linear qhov ntev ntawm cellular plastics thiab rubbers. Cov qauv no pab txheeb xyuas qhov ntsuas; lawv tsis teem ib tug universal ceev, thickness los yog dav txwv rau koj cov khoom. Muab cov kev txwv kev lees paub hauv koj qhov kev yuav khoom tshwj xeeb.
| Yam khoom txais | Sau cia ua ntej mus sib hais |
|---|---|
| Qhov haum | Pom zoo ntsia hlau thiab chim kos duab, txuas qhov ntev, tiav thiab soj ntsuam cov ntaub ntawv. |
| Qhov rai txheej txheem | Pub sib tov, tso zis lub hom phiaj, ntsia hlau-ceev ntau, qhov chaw ntsuas kub thiab siab, txoj cai stabilization. |
| Cov khoom ua npuas ncauj | Cov txheej txheem pom tseeb-qhov ntom ntom thiab lub hom phiaj ntau yam, qhov ntev thiab qhov siab ntev, cov qauv ua haujlwm, pom qhov tsis xws luag. |
| Kev sib piv | Lub hauv paus khiav los yog pom zoo cov qauv siv, tib cov ntaub ntawv ntau qhov uas siv tau, thiab muaj npe txiav txim siab rau kos npe tawm. |
Yog tias koj tab tom hloov cov ntsia hlau uas twb muaj lawm, xa cov ntaub ntawv tsim tawm tam sim no txawm tias nws tsis zoo. Ib qhov ntsuas hauv paus ua rau peb pab pawg muaj txiaj ntsig los hloov pauv. Yog tsis muaj nws, "tsawg dua" thiab "ua npuas zoo dua" suab zoo nkauj tab sis tsis tuaj yeem lees txais lossis tsis lees txais ncaj ncees.
RFQ daim ntawv teev npe
- Extruder ua, qauv thiab chim kos duab
- qub ntsia hlau kos duab los yog ntsuas ib feem
- PS qib thiab daim foos pub
- Recycled-cov ntsiab lus ntau thiab particle loj
- Nucleating agents thiab lwm yam additives
- Tshuab tshuab thiab taw qhia taw tes
- Daim ntawv lossis profile kos duab thiab cov ntsiab lus tuag
- Lub hom phiaj tso zis, ceev thiab qhov ntev
- Tam sim no RPM, qhov kub thiab txias
- Hnav daim ntawv qhia, teeb meem thiab cov txheej txheem sim
Cov lus nug uas nquag nug
Dab tsi yog qhov txawv ntawm PS foaming ib leeg ntsia hlau?
Nws cov khoom noj, melting thiab mixing zones raug xaiv rau PS feedstock thiab cov txheej txheem ua npuas ncauj. Nanhaiya's PS foaming ib nplooj ntawv ntsia hlau piav qhia txog L / D txoj hauv kev ntev dua, ntu pub zaub mov npaj txav PS thiab nucleating tus neeg sawv cev, thiab Maddock-hom lossis tus pin sib tov xaiv ze rau qhov kawg ntawm compression lossis metering. Qhov tseeb geometry yuav tsum ua raws li tus neeg yuav khoom lub tshuab thiab kev tsim.
Puas yog L / D piv ntev dua lav zoo PS ua npuas ncauj?
Tsis yog. Ntau qhov kev ua tiav ntev yuav pab tau ib qho kev sib tov thiab kev sib xyaw ua haujlwm, tab sis nws kuj hloov lub sij hawm nyob thiab thermal raug. Nanhaiya piav qhia txog qhov ntev L / D tsim rau nws PS foaming ntsia hlau yam tsis tau tshaj tawm ib qho thoob ntiaj teb PS npuas L / D tus nqi. Xaiv qhov ntev tiv thaiv lub tshuab, throughput, formulation thiab khoom phiaj.
Kuv puas yuav tsum xaiv Maddock tov khoom lossis tus pin tov khoom?
Tsis yog universally zoo dua. Nanhaiya sau ob qho tib si raws li qhov sib xyaw ua ke. Piav txog cov khoom PS, cov khoom siv rov ua dua tshiab, tus neeg sawv cev nucleating, teeb meem yaj-tsis sib haum, siab muaj ua ntej tuag thiab tso cai rau qhov kub thiab txias keeb kwm kom cov khoom sib xyaw tuaj yeem xaiv rau lub luag haujlwm.
Kuv puas tuaj yeem siv cov kev ntsuas ib leeg-ntsia hlau raws li PS ua npuas ncauj?
Tsis yog. Nanhaiya ib leeg-ntsia hlau qeb teev cov qauv dav dav, tsis yog ib qho pov thawj PS foaming tso tawm rau txhua qhov kev tsim, tuag thiab tshuab tshuab. Nug rau lub luag haujlwm tshwj xeeb lub peev xwm thiab kev lees paub hloov pauv.
Yuav ua li cas peb yuav tsum xyuas qhov ceev ntawm PS ua npuas ncauj mus sib hais?
Pom zoo cov khoom, piv txwv qhov chaw, txias thiab lub hom phiaj ua ntej mus sib hais. TS EN ISO 845 Cov txheej txheem kom pom tseeb qhov ntom ntom ntawm cellular plastics thiab rubbers. Qhov twg cov tawv nqaij cuam tshuam rau kev txhais lus, pom zoo seb yuav tsum muaj qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom; kuj sau qhov ntev thiab kab mob.
Cov ntaub ntawv dab tsi Nanhaiya xav tau rau kev hais lus?
Xa cov ntsia hlau tam sim no thiab lub thoob kos duab lossis kev ntsuas, tus qauv extruder, cov ntsiab lus sib txuas, PS qib thiab pub daim ntawv, cov ntsiab lus siv rov ua dua tshiab, cov khoom siv nucleating, tshuab tshuab thiab taw qhia taw qhia, cov khoom lag luam thiab cov khoom lag luam, paub cov ntaub ntawv yaj thiab siab, hnav keeb kwm thiab kev pom zoo rau kev lees paub.
