Yog tias koj twb tau saib ib qho ntawm cov neeg ua pasta ua khob noom cookie los ntawm lub raj thiab xav tsis thoob tias kev tsim cov yas ua haujlwm li cas -zoo, koj tsis yog lub hauv paus kiag li. Ntsia hlau extrusion yog qhov tseem ceeb uas lub tswv yim, tshwj tsis yog txhua yam kub dua, nyob rau hauv txoj kev ntau dua, thiab koj twv yuav raug hu tsis tuaj yeem noj dab tsi tawm.
Vim li cas Spinning Beats Melting (feem ntau)
Ntawm no yog qhov hais txog yas. Nws tsis ua cua sov tsim nyog rau damn. Hlau? Tseeb, muab pov rau hauv qhov cub thiab nws yuav yaj sai sai. Puas yog yas? Cov khoom ntawd tawv ncauj. Koj cia nws zaum hauv qhov cub sim yaj nws thiab ob yam tshwm sim: sab nraud kub hnyiab thaum sab hauv tseem khov, lossis koj tos ntev npaum li tag nrho cov batch degrades rau hauv khib nyiab.
Qhov ntawd yog qhov uas cov ntsia hlau tig los rau hauv, thiab ncaj ncees, leej twg pom qhov no tsim nyog tau txais txiaj ntsig ntau dua li qhov lawv tau txais.
Qhov txuj ci tseem ceeb tsis yog qhov kev sib hloov nkaus xwb - nws yog cov yas heats nws tus kheej. Suab weird, txoj cai? Tab sis thaum koj ntim cov yas pellets rau pem hauv ntej nrog lub hau ntswj hauv lub thoob nruj, txhua qhov kev sib txhuam ntawm cov pellets, nruab nrab ntawm cov yas thiab lub thoob, nruab nrab ntawm cov yas thiab cov ntsia hlau nws tus kheej -tag nrho cov uas ua kom sov. Kub tiag tiag. Hom uas melts yas zoo yam tsis zaum ib ncig ntawm degrading.
Kuv tau pom cov txiv neej sim extrude yas nrog hloov kho cov khoom siv los yog auger screws los ntawm cov khw muag khoom kho vajtse. Tsis txhob mus zoo. Cov yas yog tsis yaj zoo los yog koj tau txais qhov tsis sib haum xeeb mush uas txhaws txhua yam. Muaj kev tshawb fawb tiag tiag rau cov ntsia hlau no, txawm tias lawv saib yooj yim.
Lub Ntsia Hlau Nws tus kheej (Tsis yog Koj Qhov Nruab Nrab Drill Bit)
Ib tug zoo extrusion ntsia hlau yog ntev. Zoo li, tiag tiag ntev piv rau nws qhov dav. Feem ntau khiav ntawm qhov chaw ntawm 20 mus rau 30 npaug ntawm lawv txoj kab uas hla. Qhov ntawd yog cov ntsia hlau ntau. Tab sis koj xav tau ntev npaum li ntawd vim tias cov yas yaj yaj yuav siv sij hawm thiab nyob deb - cov khoom yuav tsum tau maj mam ua kom sov, yaj, sib tov, thiab tsim kom muaj siab thaum nws mus rau hauv lub thoob.
Cov ntsia hlau tsis zoo ib yam. Nws tapers. Cov channel uas cov yas zaum tau ntiav ntiav thaum koj txav los ntawm qhov kawg pub mus rau qhov tso zis. Qhov compression no ua ob txoj haujlwm tseem ceeb: nws nyem tawm cov hnab ntim cua thiab tsim kom muaj lub siab xav tau los yuam cov yas yaj los ntawm txhua qhov tuag lossis lub nozzle koj tau txais thaum kawg.
Feem ntau cov ntsia hlau zoo kuj muaj chrome plating lossis lwm yam slick txheej. Yas uas lo rau ntawm cov ntsia hlau tsuas yog tig mus rau hauv qhov chaw es tsis txhob txav mus rau pem hauv ntej. Koj xav tau cov ntaub ntawv uas zawv zawg nrog, tsis khi rau lub neej.
Thiab kev tshem tawm tseem ceeb tshaj qhov koj xav. Ntau qhov chaw nruab nrab ntawm cov ntsia hlau thiab lub thoob? Cov yas ntws rov qab mus rau pem hauv ntej, tua koj cov zis. Muaj extruders tuav kam rau ib ncig ntawm 0.001 npaug ntawm cov ntsia hlau txoj kab uas hla, uas yog vim li cas lawv raug nqi dab tsi lawv raug nqi. Lub 25mm ntsia hlau spinning hauv ib chim uas yog 25.025mm yuav tsum tau machining precision.
Peb Cheeb Tsam, Peb Txoj Haujlwm
Feed Zone: Tau txais cov khoom hauv
Lub ntiajteb txawj nqus nqus pellets los ntawm koj lub hopper rau hauv thawj ntu ntawm cov ntsia hlau qhov twg cov channel yog qhov tob tshaj plaws. Cov ntsia hlau grabs lawv thiab pib thawb rau pem hauv ntej. Zoo nkauj ncaj, tsuas yog thaum nws tsis yog.
Qee cov yas tsis ntws zoo. Tsawg- cov ntaub ntawv ntom ntom zoo li txuas hla qhov qhib es tsis txhob poob. Recycled flake-tshwj xeeb tshaj yog los ntawm cov fwj crushed- compresses yooj yim dhau thiab tuaj yeem ua rau cov khoom ntim. Kub kub tseem ceeb ntawm no thiab. Yog tias lub caj pas pub kub dhau (hais tias, cua sov rov qab los ntawm lub thoob), cov pellets pib yaj ua ntej. Tom qab ntawd koj tau txais cov khoom nplaum uas yuav tsis xa mus tom ntej, thiab koj cov txheej txheem tag nrho rov qab.
Cov tsho dej txias nyob ib ncig ntawm lub caj pas pub pab tiv thaiv qhov no. Ua kom lub hopper txias tsis yog paranoid -nws tiv thaiv mob taub hau.
Compression Zone: Qhov twg Magic tshwm sim
Qhov no yog qhov khoom pellets ua cov yas molten. Cov ntsia hlau ya dav hlau tau nce qis, nyem cov khoom thaum nws yaj. Qhov melting no tshwm sim vim yog kev sib txhuam-nruab nrab ntawm cov pellets sib tov ua ke, yas rub tawm ntawm lub thoob, txhua yam ua kom sov los ntawm shear quab yuam.
Xav txog nws zoo li kis tau cov txiv laum huab xeeb txias nrog rab riam. Thaum xub thawj nws tsis txav tau yooj yim, tab sis tag nrho cov kev sib txhuam thiab lub siab sov so kom txog thaum nws kis tau yooj yim. Tib txoj cai, tshwj tsis yog "txiv laum huab xeeb" yog ntaus 200-300℃nyob ntawm koj cov khoom.
Qhov sib piv ntawm compression-ntau npaum li cas ntawm qhov ntsuas qhov tob yog piv rau seem pub-xav tau kom phim koj cov yas. Feem ntau cov khoom siv yas khiav ntawm 2: 1 thiab 4: 1 compression. Kev txhoj puab heev thiab koj yuav ua kom muaj siab tshaj plaws uas tuaj yeem ua rau cov ntsia hlau puas lossis hlawv cov khoom. Ua siab mos siab muag thiab koj yuav tsis tsim kom muaj lub siab txaus los thawb koj txoj kev tuag tas mus li.
Kuv tau saib extruders nrog tsis ncaj ncees lawm compression ratios tawm tsam txhua hnub. Txawm hais tias cov zis surges thiab tee randomly, los yog lub cev muaj zog bogs los ntawm lub siab rov qab ntau dhau. Sib piv cov ntsia hlau geometry rau cov khoom siv tsis yog xaiv tau.
Metering Zone: Kawg Push
Thaum lub sij hawm yas mus txog qhov ntsuas qhov ntsuas, nws yuav tsum tau yaj tag nrho thiab sib xyaw. Qhov ntiav, qhov tsis tu ncua- qhov tob ntawm no ua raws nraim li lub npe qhia- lawv ntsuas cov khoom ntws zoo ib yam. Tshooj lus no tsim lub siab kawg uas xav tau los yuam cov yaj los ntawm koj qhov tuag.
Yog tias txhua yam khoom siv dej ntws ua haujlwm zoo, thaj chaw no muab cov txiaj ntsig zoo, ruaj khov. Yog tias cov khoom noj tsis sib haum lossis thaj chaw compression tsis tag nrho yaj cov khoom? Qhov no yog qhov uas koj yuav pom nws- hauv cov zis tawm, qhov kub thiab txias, lossis teeb meem zoo hauv koj cov khoom kawg.
Cov ntaub ntawv coj txawv txawv
Tsis yog txhua lub plastics ua si zoo nrog tib tus qauv tsim. PLA thiab ABS? Zoo nkauj zam txim, lawv yuav khiav ntawm cov qauv txheem feem ntau yam tsis muaj fuss ntau. PETG tau nplaum thiab xav tau kev saib xyuas qhov kub thiab txias lossis nws yuav pib degrading thiab tig xim av.
Nylon ntws zoo li dej ib zaug nws tau yaj, yog li nws tuaj yeem tswj tau qhov compression steeper. TPU thiab lwm yam ntaub ntawv hloov tau? Npau suav phem. Lawv compress es tsis txhob conveying, yog li koj xav tau tshwj xeeb tsim screws nrog grooved pub seem kom tuav lawv zoo.
Cov ntaub ntawv puv -cov khoom nrog cov iav fibers lossis cov pa roj carbon ntau- hnav cov ntsia hlau ceev ceev. Qhov ntawd yog qhov twg nitrided los yog tshwj xeeb hardened screws tuaj. Hla qhov ntawd thiab koj yuav hnav los ntawm chrome plated ntsia hlau nyob rau hauv lub hlis es tsis txhob xyoo.
Huab Cua Huab Cua Tsis muaj leej twg hais txog txaus
Nov yog qee yam uas ua rau tib neeg mus ncig: cov cua sov ntawm koj lub thoob tsis tshua muaj los yaj cov yas. Weird, txoj cai? Lawv txoj haujlwm tseem ceeb yog tiv thaiv cov yas los ntawm kev txias thiab ua kom khov ua ntej. Lub melting nws tus kheej tshwm sim los ntawm cov ntsia hlau ua haujlwm ntawm cov khoom siv -shear cua sov los ntawm tag nrho cov kev sib txhuam thiab siab.
Tias yog vim li cas khiav lub hau ntswj extruder qeeb dhau tuaj yeem ua rau muaj teeb meem. Tsawg ntsia hlau ceev txhais tau hais tias tsawg dua kev ua haujlwm, uas txhais tau tias tsawg dua shear cua sov. Tom qab ntawd koj tau tso siab ntau dua rau ntawm lub taub ntim cua sov, thiab mam li nco dheev koj rov qab mus rau qhov teeb meem hluav taws xob hluav taws xob uas ua rau kev ua cov yas nyuaj hauv thawj qhov chaw.
Nyob rau sab ntxeev, ceev heev thiab koj ua kom kub heev. Yas zaum saum nws qhov chaw melting rau ntev degrades. Nws discolors, tso pa tawm, poob txhua yam khoom. Txhua lub yas muaj lub sijhawm nyob siab tshaj plaws ntawm kev ua haujlwm kub. Tshaj nws thiab koj tab tom ua cov khoom seem.
Thaum Tej Yam Tsis Zoo
Thiab lawv yuav mus yuam kev. Extruders tsis quav ntsej txog koj lub sijhawm.
Bridging nyob rau hauv lub hopper? Feem ntau txhais tau tias koj cov khoom muaj cov yam ntxwv tsis zoo los yog koj tab tom sim ua cov flake uas yog compressible heev. Kev daws teeb meem los ntawm kev siv lub hopper vibrator mus rau kev sib xyaw kom zoo dua - cov khoom ntws.
Cov zis tsis sib xws? Nws tuaj yeem tshwm sim los ntawm kev pub, tuaj yeem yog ib feem ntawm qhov txhaws tuag, tuaj yeem hnav cov ntsia hlau ya dav hlau cia cov khoom plam rov qab. Kev daws teeb meem yuav tsum ua siab ntev thiab soj ntsuam.
Discolored los yog hlawv yas? Koj tab tom khiav kub dhau, qeeb dhau, lossis koj tau txais qhov chaw tuag hauv koj lub thoob qhov twg cov khoom zaum thiab ua noj. Cov chaw tuag feem ntau txhais tau hais tias muaj kab mob sib kis los yog cov ntsia hlau puas.
Tshaj rov qab siab kaw koj lub cev muaj zog? Tsis ncaj ncees lawm compression piv, kev txwv tuag siab dhau lawm, los yog cov yas tsis tau yaj tag thiab koj tab tom sim yuam cov khib nyiab los ntawm.
Kev nyab xeeb tsis yog xaiv tau
Txhua yam ntawm kev khiav hauj lwm extruder tuaj yeem ua mob rau koj. Lub thoob qhov chaw yog kub txaus ua rau mob hnyav sai sai. Cov ntsia hlau tig nrog txaus torque kom tawg pob txha yog tias koj tau ntes tau. Thiab muaj siab-ntau lub siab-hauv lub thoob ntawd. Kuv twb pom cov ntsaws ruaj ruaj tshuab molten yas hla ib chav.
Ib txwm hnav thaum tshav kub kub- hnab looj tes tiv thaiv thaum kov txhua yam nyob ze ntawm lub thoob. Khaws koj txhais tes kom deb ntawm lub hau ntswj thiab txhua qhov qhib qhib thaum ua haujlwm. Xyuas kom tseeb tias koj tau txais qhov cua kom zoo vim qee cov yas tso pa tawm tsis zoo ntawm qhov ua haujlwm kub, tshwj xeeb tshaj yog tias lawv pib degrade.
Kev hloov pauv tuag yog qhov txaus ntshai tshwj xeeb. Koj tab tom ua haujlwm nrog cov chaw kub thaum ua haujlwm nrog cov yas molten pressurized. Siv cov cuab yeej, tsis yog koj txhais tes. Tos kom lub siab poob. Tsis txhob maj.
Kev xav zaum kawg
Ntsia hlau extrusion tsis yog intuitive thaum xub thawj. Lub tswv yim hais tias yas heats nws tus kheej los ntawm kev sib txhuam es tsis txhob cia siab rau sab nraud cua sov zoo li rov qab. Tab sis thaum koj nkag siab tias cov txheej txheem- uas tig ntsia hlau tsim lub zog shear uas yaj thiab sib tov cov khoom siv - tag nrho cov txheej txheem ua rau muaj kev nkag siab ntau dua.
Tau txais koj cov ntsia hlau geometry sib phim rau koj cov khoom siv, tswj koj qhov kub thiab txias kom tiv thaiv kev tawg ntxov ntxov los yog degradation, tswj kev noj zaub mov zoo ib yam, thiab tseem ceeb tshaj, hwm lub tshuab muaj peev xwm ua rau koj raug mob. Ua cov khoom no thiab koj yuav tau extruding yas ua tiav, txawm tias nws yog rau filament, pellet- pub 3D luam ntawv, lossis txawm li cas los xij koj tab tom tackling.
Tsuas yog nco ntsoov: nws yog txhua yam hais txog qhov kev sib hloov ua haujlwm tiag tiag.