Ntau tus kws tshaj lij txhaj tshuaj molding tau ntsib qhov xwm txheej ntxhov siab no: siv tib lub tshuab, tib lub pwm, thiab tib cov khoom siv raw, tab sis cov khoom lag luam qhov ntev hloov pauv -qee zaum hauv spec, qee zaum loj dhau, qee zaum me me.
Thawj qhov kev tshwm sim feem ntau yog los liam lwm yam: kev laus ntawm lub tshuab, batch-rau-batch khoom variation, los yog tsis txaus pwm precision. Tsawg tus siv sijhawm los daws teeb meem hauv av, pib nrog cov txheej txheem tswj cov logic. Tsuas yog luam cov molding logic siv rau cov qauv yas los tsim cov khoom siab -precision Cheebtsam yuav inevitably ua rau batch defects thiab xa khoom qeeb.
1. Pwm qhov kub tsis sib xws
Ntau lub chaw tsim khoom siv lub tshuab ua kom txias txias, qhov twg cov dej txias ntws los ntawm cov kab noj hniav 1, 2, thiab 3. Cov dej inlet txias, tab sis lub qhov hluav taws xob dej kub nce siab, tsim kom muaj qhov sib txawv ntawm cov kab noj hniav. Raws li kev tsim khoom txuas ntxiv, qhov sib txawv no nthuav dav. Thaum cov qauv zoo yuav tsum muaj qhov sib txawv ntawm qhov kub thiab txias nyob rau hauv 3 degree, series circuits feem ntau pom qhov sib txawv ntawm 5℃lossis txawm tshaj 10 degree. Qhov no ua rau cov yas txias tsis sib xws thiab shrinkage, ua rau qhov sib txawv ntawm qhov ntev.
Tsis tas li ntawd, irrational layout ntawm qhov txias txias los yog sib txawv ntawm cov kab dej thiab kab noj hniav exacerbate thermal imbalance.
Series Circuits (Tsis Pom Zoo): Qhov kub sib txawv ntau dhau ua rau cov kab noj hniav tsis sib xws, qhov tsis sib xws, qhov tsis sib xws, qhov tsis sib xws, kev ua tsov rog, flash, thiab lwm yam tsis xws luag.
Parallel Circuits (pom zoo): Tswj qhov kub thiab txias tsis pub dhau ± 3 degree. Ua kom cov kab noj hniav sib xws, sib xws shrinkage, ruaj khov qhov ntev, thiab zoo sib xws hauv cov tsos thiab kev ua haujlwm.
Vim li cas qhov kub tsis sib xws ua rau tsis muaj kev ruaj ntseg? Qhov sib txawv txias txias → Qhov sib txawv shrinkage tus nqi → Dimensional deviation, warpage, kev sib dhos tsis zoo, thiab cov khoom tsis zoo.
Cov tswv yim txhim kho:
- Ntsuas qhov kub ntawm txhua lub voj voog ib qho kev hloov pauv siv lub pyrometer kom ruaj ntseg.
- Sau cov dej inlet thiab qhov hluav taws xob kub; tsim kom muaj lub log taug qab kom paub qhov tsis xws luag thaum ntxov.
- Zam kev sib txuas ntau dhau ntawm series; siv cov qauv sib luag lossis txwv cov voj voog rau ntau tshaj 2.
2. Tsis yog Logic rau Teem Moulding Parameters
Cov kws tshaj lij qub qub feem ntau cia siab rau lub sijhawm -raws li kev hloov pauv rau kev ntim khoom siab thaum molding cov qauv vaj tsev-ib txoj hauv kev siab siab uas npog cov teeb meem. Txawm li cas los xij, precision qhov chaw yog rhiab heev rau siab thiab yaj sau. Kev cia siab ib leeg rau lub sijhawm tso cai rau kev hloov pauv hauv cov ntim ntim thiab compression ib zaug, accumulating dimensional deviations ntawm 0.1-0.2 mm.
Tsuas yog nce ntim siab thaum qhov loj me me yog qhov kho qhov muag. Txij li qhov teeb meem tseem ceeb yog qhov tsis ruaj tsis khov ntau dua li qhov tsis sib xws, qhov kev hloov kho qhov muag tsis pom tsuas yog ua kom muaj kev hloov pauv.
Kev Txhim Kho Cov Lus Qhia: Rau qhov tseeb, txais yuav kev txhaj tshuaj molding logic ntawm txoj haujlwm -raws li kev hloov pauv. Qhov no precisely tswj lub yaj cushion (hloov taw tes), stabilizing internal kab noj hniav compression thiab txo qhov seem ntab ntawm qhov chaw.
3. Tsis muaj kev kho cua txias
Cov tshuab cua txias yog cov khoom siv tseem ceeb uas feem ntau tsis saib xyuas. Thaum lub sij hawm, nplai thiab sludge tsim nyob rau hauv cov kav dej yog tias cov dej yees thiab pwm circuits tsis tu tsis tu ncua. Qhov no drastic txo tshav kub efficiency. Nrog cov pwm tsis ruaj khov nyob rau hauv lub sij hawm tas mus li, qhov kub thiab txias ntawm pwm ua rau muaj kev hloov pauv tsis tu ncua ntawm cov nqi shrinkage, ua rau batch dimension yuam kev -ib qho teeb meem tshwm sim hauv me me thiab nruab nrab- cov chaw tsim khoom loj.
Kev Txhim Kho Cov Lus Qhia: Tsim ib lub sijhawm saib xyuas cov khoom siv. Tsis tu ncua ntxuav cov kav dej, cov lim dej, thiab cov pwm pwm. Txhim kho cov txheej txheem dej (descaling thiab pom) kom tswj tau qhov ua kom txias tas li.
4. Batch-rau-Batch Raw Material Fluidity Variations
Cov khoom siv raw variation → Hloov pauv hauv fluidity → Kev hloov pauv hauv kev ua haujlwm tsis kam → Overfilling lossis underfilling → Dimensional hloov.
Cov tswv yim txhim kho:
- Ntsuam xyuas qhov Melt Flow Rate (MFR) raws li kev tshuaj ntsuam xyuas los tswj cov kev hloov pauv hloov pauv.
- Khaws cov ntaub ntawv nkauj xwb thiab rov ua dua tshiab; zam kev sib xyaw kom tsis txhob muaj qhov tsis sib xws.
- Re- txhim kho cov txheej txheem tsis zoo tom qab hloov cov khoom siv lossis cov khoom siv kom ruaj ntseg.
Txawm nyob hauv tib qib, cov yas los ntawm cov khoom sib txawv, cov chaw tsim khoom, lossis lub sijhawm khaws cia muaj qhov txawv txav hauv Melt Flow Index (MFI) thiab fluidity. Kev hla MFI cov ntawv txheeb xyuas, sib xyaw cov nkauj xwb thiab rov ua dua, lossis sib pauv cov khoom lag luam ua rau tsis sib haum xeeb yaj sau tsis kam thiab txhaj tshuaj hnyav, ua rau muaj qhov hloov pauv tsis tu ncua.
5. Txhaj nrawm sab nraum lub qhov rais ruaj khov
Qhov no yog ib qho tseem ceeb uas tsis tau pom dua: txhua qhov sib xyaw ua ke ntawm cov yas thiab pwm muaj qhov tshwj xeeb "qhov rais nrawm nrawm."
Yog tias qhov kev txhaj tshuaj nrawm nyob rau hauv lub qhov rais no, me me ib puag ncig lossis hydraulic roj hloov pauv yuav tsis cuam tshuam qhov ntev.
Yog tias qhov nrawm poob rau hauv cov khoom siv "sensitive zone," hloov me ntsis hauv qhov kub thiab txias, roj siab, lossis pwm kub yuav hloov tam sim ntawd lub melt flow state, ua rau tam sim no dimensional hloov.
Kev cia siab rau qhov kev paub dhau los feem ntau ua rau cov neeg ua haujlwm tsis tuaj yeem xaiv qhov nrawm hauv cov cheeb tsam rhiab, ua rau qhov tsis sib xws ntawm qhov ntau thiab tsawg.
Kev Txhim Kho Cov Lus Qhia: Ua qhov kev ntsuam xyuas viscosity nkhaus ua ntej kev tsim khoom txhawm rau txheeb xyuas qhov kev txhaj tshuaj ruaj khov nrawm rau cov khoom siv thiab pwm. Xauv lub molding ceev nyob rau hauv no ntau yam kom tsis txhob rhiab cheeb tsam.
