Yeej Kev Sau Lub Ntawv Qhia Tsim Hluas Muaj Suab Xa Ua Li Cas Rau Kev Tsim Khoom Nyob Rau Hauv Tus Pheej Tseem Ceeb ntawm Thermal Break Strips?

Txhawm rau tus neeg tsim tshuab ntxhua muaj kev tshawb fawb tau los ntawm 2006, peb paub tias kev lag luam yuav cuam tshwmsi rau kev lag luam khoom siv. Nyob hauv txhua yam cuam tshwmsi rau kev lag luam, kev tsim kho tshuab ntxhua yog ib qhov tseem ceeb—nó txiav txim siab yuav tshwm sim polyamide thermal break strips ntau npaum li cas, nyob rau hauv kev lag luam zoo thiab ntau npaum li cas. Thru peb cov kev pab tshwj xeeb (co-developed with our mold manufacturing partner to build Polywell), peb muab kev lag luam zoo tshaj rau kev tsim kho tshuab ntxhua thiab kev tsim kho raw material (twin screw granulation) thiab extrusion (single screw extruders), pab cov neeg siv khoom tau kev lag luam zoo tshaj.

Yuav li cas kev tsim kho tshuab ntxhua yuav cuam tshwmsi rau kev nce siab ntawm kev lag luam

Kev Sim Kho Hauv Siab Thiab Melt Flow Rate

Qhov chaw nruj hauv qhov muab yog qhov txoj kev rau cov dundanj polyamide los tsim cov rooj thermal break—and qhov kev tsim kho ntawm nws tuaj yeem tshwm sim ntau rau lub sijhawm uas cov dundanj no ciaj. Yog tias qhov chaw nruj tsis zoo, muaj qhov kub thiab ncav ncaum, yuav tshwm sim kev nyuaj siab, ua rau cov dundanj ciaj kom sov dua thiab khaws lub sijhawm extrusion. Qhov kev tsim kho zoo tagnrho ntawm peb muab siv qhov "kev nce dav gradually" rau qhov chaw nruj: pib ntawm qhov muab inlet (sib sau nrog single screw extruder), qhov chaw nruj dav dua le le hauv qhov kev ciaj, thaum tag nrho cov ncav ncaum tau rooj (radius ≥6mm). Qhov no txo kev nyuaj siab tso tseg los ntawm 30% hn compared to traditional molds, thiaj li cov dundanj ciaj nce ntev dua. Rau peb cov dundanj polyamide muaj sib txig sib xig (tsim los ntawm twin screw granulation), qhov kev tsim kho no kuj tiv thaiv kev clog fiber—thiaj li muaj kev ciaj tas li tiag tiag uas txeem extrusion speed nyob rau 3-5m/min (20% siab dua industry averages uas muaj kev tsim muab tsis zoo).

Kev tsim kho Cooling System thiab Cycle Time

Tom qhov tsis meej plhaub rau hauv qhov chaw nruj, nws yuav tsum sib txaws ntev ntxiv los ntawm kev hla tshav thiab qhov chaw nruj lub tshuab hla tshav tuaj yeem coj kom sai li. Qhov chaw nruj uas muaj kev hla tshav tsis zoo yuav nyuaj sib tsoo dua, ua rau yuav tau siv sijhawm ntau dua. Peb lub chaw nruj muaj qhov kev kho tshuab hla tshav muaj ntau lub raj: lub raj cooper (muaj kev sib txaws tshav zoo) tau ncav rau hauv sab nraud ntawm qhov chaw nruj, txuas tib siab rau tag nrho qhov chaw ntim. Ntuj looj hla tshav dhau nrog lub raj nrog 2-3L/min, thiab tshav tso caij nyob rau 20-25°C. Qhov no pab kom qhov chaw ntim sib tsoo tib siab thiab sib tsoo nrog 8-10 feeb (ntawm 15-20 feeb nrog qhov chaw nruj uas muaj ib lub raj hla tshav). Kev sib tsoo sai dua yog vim kuv tshaj tawm sijhawm tsim khoom, pab rau neeg siv khoom tsim tau ntau dua ib teev.

Caij Chaw Nruj Muaj Feem Nyob Rau Kev Thaug Tsawg Tshav Ntawv

Kev Sau Lub Caij Nruj Thiab Tus Nqi Tshav Ntawv

Qhov chaw tshuab kaw nruj yuav xav tau lub ntsiab luj (xws li T-shape, U-shape) uas muaj qhov ntsug ncig raug rau hauv daim duab ntawm hlau. Yog hais tias lub tshuab muaj qhov chaw tsis raug, ces yuav tsim tau cov khoom tsis raug ntsib, yog li ntawd yuav ua rau khoom no los. Peb lub tshuab tsim khoom siv CNC machining los tsim qhov chaw nrog qhov raug ntau txog ±0.02mm. Piv txwv li, rau qhov thermal break strip T-shape (feem ntau nyob rau hauv daim duab ntawm kab ntsa), lub tshuab muaj qhov chaw sawv cev rau qhov transition zone ntawm qhov tseemceeb thiab qhov T-branch, kom meej tias qhov hlau sov tuaj rau ob qhov chaw ntawd raws li. Qhov raug no cuam tshuam rau kev lag luam, feem ntau yog 3-5%. Rau peb lub tsev pabcuam ib tsoom, peb kuj muab cov kev xaiv tshuab tshiab rau cov neeg siv khoom—ntau npaum li cas li, peb lub tshuab tsim tau cov khoom zoo ib yam, kom tsawg kev puv yuam.

Kev tiv thaiv kev puas tsob thiab sijhawm kev siv tshuab

Kev siv hlua tshiab tas li tas los ntawm kev siv txhob ntxiv rau kev lag luam thiab ntxiv ntau nqi. Kev tsim hlua muaj feem cuam tshuam rau lub sijhawm uas hlua sai li: siv cov khoom siv zoo qoob lossis kab hluav taws xob zoo siab yuav tshaib meej, tshwj tsis yog thaum siv cov polyamide reinforced roj teeb (nyoj siab). Peb cov hlua siv H13 hot work steel (ntsim mus rau 50-52 HRC) rau hauv hlua, thiab sab nraud tau sau nrog titanium nitride (TiN) kom zoo dua rau kev tshaib. Lub hluav taws xob hluav taws kuj muaj ntau dua 2-3mm dhau hluav taws xob tseem ceeb, kom tsis txhob muaj kev hloov form los ntawm kev siv ntev. Qhov kev tsim no pab ntxiv sijhawm siv hlua mus rau 500,000-800,000 kab (sib npaug ob zaug hlua tsawg kua siv). Txhob hloov hlua ntau ces tsawg nyinj kev lag luam—yog qhov tseem ceeb rau kev tswj xyuas kev ua haujlwm zoo.

Sib raug rau kev tsim hlua thiab rau lub qhov kev lag luam

Sib raug rau Twin Screw Granulated Polyamide

Pej xeem tshuab tsawg hlua rau pej yog tsim los ntawm kev siv tshuab ntxhua ob lug, uas faus cov kab roj hlau rau hauv polymer kom tsim tau qhov chaw tseem ceeb. Qhov chaw tseem ceeb no txhim kho lub zog ntawm cov chaw tsis muaj leeg—tab sis yog tshuab ntxhua tsis tuaj saib xyuas nws yuav cuam tshwv. Yog tshuab ntxhua muaj qhov chaw ncaws siab thiab rough (raug) yuav tshem tsov qhov chaw tseem ceeb ntawm kab roj hlau, ua rau cov chaw tsis muaj leeg nceeb dua thiab nce qis. Lub tshuab ntxhua pej muaj qhov chaw ncaws smooth (surface roughness Ra ≤0.4μm) thiab qhov chaw kawg muaj kev pheej hmoo zoo: thawj chaw npaj ncig tshuab ntxhua tsis muaj kev tshem tsov kab roj hlau. Qhov no tsis yog tsuas yog tshem tsov lub zog ntawm cov chaw tsis muaj leeg, tab sis kuj tseem tshem tsov kev ncaws zoo ntawm thawj chaw npaj—ntsuas kev ncaws uas yuav nce nyuaj.

Kev sib pab zoo ntawm Single Screw Extruders

Xaiv: tsuas yog lub chaw tso cov kab ntsug (single screw extruders) thiaj tuaj yeem tsim cov kab polyamide thermal break (twin screw extruders yog rau granulation). Peb lub rooj kis tau raug tsim los work nrog single screw extruders’ output characteristics. Lub chaw tso kab ntsug single screw muab cov duab hluv tshwm sim txaus siab, muab cov duab hluv tshwm sim nyob rau hauv qhov siab tseem ceeb (15-20MPa), yog li peb lub rooj kis tau raug tsim los pab nrog qhov siab no. Lub rooj kis inlet diameter sib xws nrog outlet ntawm extruder (feem ntau yog 30-40mm) kom tsws kom tsis txav mus dua, uas yuav cuam tshuam rau kev tsim kho. Peb kuj ntxig tso ib qhov valve los saib xyuas siab—yog tias siab ntawm extruder loj dua (ntau npaum li sijhawm viscosity hloov), qhov valve no yuav tso siab tshaj tawm, kom tsis pub rooj kis raug mob thiab kom kev tsim kho tsis tu ncua. Qhov kev sib cuag no ntawm rooj kis thiab extruder yuav tshem tawm qhov tsis sib xws uas ua rau kev puas tsuaj rau cov neeg siv khoom uas muab khoom los ntawm cov neeg muag khoom sib txawv.

Kev Pab Txhawb Ntau Yees Duab Rau Kev Raug Siab Tshaj Plaws Rau Kev Kis Lub Roog

Kev Paub Kis Lub Roog Sib Txawv

Txhawm rau ib qhov kev pab tswv yim, peb tsis yog tshuaj xaiv tso rau kev xauj khoom—peb tsim kho rau kev xauj khoom nyob rau hauv txoj kev tsim kho ntawm txhua tus neeg siv khoom. Peb lub teem (nyob rau qhov chaw pab kev tsim kho rau kev xauj khoom) nrhiav xyuas cov ntaub ntawv xws li tus neeg siv khoom lub rooj xauj khoom muab tshuab xauj khoom, daim duab uas xav tau, thiab cheeb tsheej tsim kho, tom qab ntawd tsim kho ib qhov xauj khoom uas raug rau. Piv txwv li, yog hais tias ib tug neeg xav tsim kho 25mm dav U-daim duab daim ntawv nrog 4m/min, peb hloov pauv lub siab ntawm kev tso siab, kev saum lub siab thiab daim duab ntawm lub siab kom raug. Peb kuj sim lub xauj khoom hauv peb lub tshuab tsim kho ua ntej xa khoom—thim suab tias nws tuaj yeem ua haujlwm zoo thiab muaj qhov tseem ceeb.

Kev saib xyuas xauj khoom thiab kev pab tshuaj lij

Kev pab ua hauj lwm no tsis li cas mus txog thaum siv khoob tshuab. Peb muab kev pab rau cov neeg siv khoom nrog qhov kev tswj hauj lwm: sau ua ntej lub tseem cien tshuab (kom tshem tawm cov polyamide nyob hauv), xyuas kom sov tseem cien (kom tiv thaiv kev khaum), thiab kho cov ntsiab chaw siv tas los (siv kev kho kom meej). Yog tias muaj neeg siv khoom muaj teeb meem ntxiv (xws li kev tsim khoob tshuab yooj yim dua), peb tus neeg kho tshuab yuav mus xyuas tsev ntawm lawv—peb tuaj yeem hloov khoob tshuab lossis kev sov tseem cien kom rov qhia siab dua. Peb kuj qhuab kev siv khoob tshuab rau cov neeg siv khoom, pab lawv tiv thaiv kev ua sai (xws li siv dej saum nplog uas tuaj yeem ua rau khoob tshuab puav) uas ua rau kev tsim khoob tshuab yooj yim.

Rau cov khev kho mob sib tshooj tsis pub tshav, kev them nyiaj rau kev lag luam yog qhov tseem ceeb los tswj kom muaj kev lag luam ntau. Peb cov kev them nyiaj rau kev lag luam, cov duab twg twg rau kev lag luam, cov duab plaum rau kev lag luam, thiab cov kev pab txhawb nqa rau kev lag luam yuav pab tau koj kom lag luam zoo dua, kom lag luam ntev dua, thiab kom tsis lag luam ntau dua. Nrog rau 17 xyoo xyaum lag luam, peb paub tias yuav tsum them nyiaj li cas rau kev lag luam, uas tsis yog ib tug them nyiaj rau kev lag luam, tab sis yog ib tug them nyiaj rau kev lag luam uas pab tau koj.