Sib nrug los ntawm lub nplhaib cua, yam uas ua rau cov yeeb yaj kiab tsis sib xws
Nws tau muab faib ua cov tuab tuab tsis sib xws (ib sab yog tuab dua thiab lwm qhov yog nyias nyias hauv lub voj voog) thiab qhov ntev ntawm qhov sib txawv (qhov tuab sib txawv thaum lub sij hawm noj cov yeeb yaj kiab). Cov tshuab me me muaj qhov ua siab ntev rau qhov tsis raug, thiab ntau yam me me tuaj yeem ua rau lub thickness sib txawv.
1. Lub thickness tsis sib xws nyob rau hauv cov kev taw qhia ib ncig (tsis tu ncua thicker lossis thinner ntawm ib qho chaw ruaj khov)
1. Qhov kub thiab txias ntawm lub taub hau tuag tsis sib npaug
Lub nplhaib cua sov yog xoob thiab muaj hnub nyoog, qhov ntsuas kub ntawm lub thermocouple yog qhov tsis raug, thiab muaj qhov kub thiab txias sib txawv ntawm ntau txoj haujlwm ntawm lub taub hau tuag. Qhov kub hauv zos yog siab, lub yaj fluidity yog loj, thiab cov zaj duab xis kuj yog tuab. Qhov kub thiab txias yog qhov tsawg, qhov fluidity tsis zoo, thiab cov yeeb yaj kiab kuj yog nyias. Lub taub hau pwm ntawm lub tshuab me me - qhov loj me yog qhov me me. Txawm tias qhov hloov me ntsis ntawm cov cua sov coil tuaj yeem ua rau muaj qhov sib txawv ntawm qhov kub thiab txias.
2. Qhov sib txawv tuag tsis sib xws
Qhov nruj ntawm cov bolts tuag yog tsis sib haum, thiab qhov loj ntawm qhov sib txawv nyob ib ncig ntawm daim di ncauj tuag tsis zoo ib yam. Yog li ntawd, cov khoom siv tawm yog thicker ntawm ib sab thiab nyias nyias ntawm lwm qhov. Qhov teeb meem no feem ntau yuav tshwm sim tom qab disassembling, assembling thiab ntxuav lub taub hau tuag.
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Rau cov pwm tuag me me, cov bolts tsis tuaj yeem nruj heev; lawv tsuas tuaj yeem hloov kho me ntsis.
3. Carbon deposits thiab impurities adhering nyob rau hauv lub taub hau tuag
Yas coke los yog impurities tau daig ntawm ib qho kev sib txawv ntawm lub di ncauj tuag tiv thaiv cov yaj los ntawm ntws tawm, ua rau hauv zos nruam nyias me ntsis los yog tuab strips, thiab tej zaum kuj yuav nrog pinholes.
4. Ib feem ntawm cov ntxaij lim dej
Cov ntxaij lim dej yog ib feem thaiv los ntawm impurities, ua rau lub melt flow direction hloov thiab tuag lub taub hau paug yuav unbalanced nyob rau hauv lub circumferential kev taw qhia.
5. Lub taub hau tuag thiab lub nplhaib cua tsis concentric
Qhov chaw ntawm lub taub hau tuag thiab lub nplhaib cua yog misaligned. Txawm hais tias lub nplhaib cua nws tus kheej muaj cov pa tawm tsis sib xws, cov cua txias nyob ib puag ncig ntawm cov yeeb yaj kiab npuas tseem tsis sib xws, uas tau tshwm sim raws li qhov sib txawv ntawm qhov sib txawv.
Ii. Longitudinal thickness Fluctuation (Nrog rau cov kev taw qhia ntawm zaj duab xis txav, lub thickness fluctuates)
1. Lub extrusion paug tsis ruaj khov
- Screw speed fluctuation: Inverter tsis ua hauj lwm, ceev teeb siab dhau lawm; Cov ntsia hlau ntawm lub tshuab me me - qhov loj me yog luv, thiab nws yooj yim rau kev tso tawm tsis ruaj khov ntawm kev kub ceev.
- Lub siab tsis ruaj khov: Lub vijtsam lim tau maj mam txhaws, lub siab hloov pauv, thiab cov zis ntim qee zaum loj thiab qee zaum me me.
- Qhov ntsuas kub hloov pauv: Kev tswj qhov kub thiab txias, cov khoom siv plasticization qee zaum zoo thiab qee zaum tsis zoo.
2. Teeb meem nrog cov ntaub ntawv raw lawv tus kheej
- Cov dej noo hauv cov khoom siv raw: PLA thiab cov ntaub ntawv hloov kho muaj cov dej, cov yaj yog tov nrog npuas, thiab muaj qhov sib txawv tuab. PE feem ntau muaj qhov cuam tshuam me me.
Kev sib ntxiv ntau dhau ntawm cov khoom siv rov ua dua tshiab thiab cov khoom siv sib xyaw ua ke: tsis ruaj khov fluidity thiab fluctuating extrusion paug.
Cov qib raw khoom tau hloov pauv, thiab qhov fluidity Performance index tsis sib xws.
3. Kev txawv txav hauv cov txheej txheem traction
Lub traction roller slips, cov roj hmab cov menyuam hnav tawm, thiab cov traction ceev fluctuates: thaum lub traction yog ceev, zaj duab xis yuav thinner; thaum lub traction qeeb, zaj duab xis yuav thicker.
Lub siab ntawm ob sab ntawm cov menyuam traction tsis sib xws, thiab cov yeeb yaj kiab tsis ruaj khov nyob rau hauv lub zog tensile.
4. Kev hloov pauv ntawm winding nro
Lub winding nro fluctuates zoo heev, ua rau cov zaj duab xis yuav tsum tau rov stretched, thiab cov tiav yob qhia thickness fluctuations.
Iii. Sab nrauv ib puag ncig thiab cov khoom sib dhos
1. Rhiav daim qauv
Sab nraud airflow ncaj qha tshuab cov yeeb yaj kiab npuas, yuam kom txias hauv zos thiab ua rau cov thickness sib txawv. Cov npuas me me ua rau muaj kev cuam tshuam loj heev. Nws tsis yog qhov txhaum ntawm lub nplhaib cua nws tus kheej, tab sis nws yog superimposed nrog cov nyhuv ntawm lub nplhaib cua.
2. Plasticization tsis txaus lossis ntau dhau ntawm cov ntsia hlau
Lub zuag qhia tag nrho qhov kub thiab txias yog qhov tsawg, lub plasticization tsis tiav, thiab yaj fluidity tsis zoo thiab tsis ruaj khov. Thaum qhov kub thiab txias siab dhau lawm, cov khoom siv degrades, yaj kev ua tau zoo deteriorates, thiab cov thickness fluctuation nce.
3. Lub taub hau tuag tsis muaj kev tiv thaiv zoo thaum lub sij hawm cua sov thiab kub nce
Lub tshuab tau pib tam sim tom qab qhov kub tau nce. Qhov kub ntawm txhua qhov ntawm lub taub hau tuag tseem tsis tau mus txog qhov sib npaug ntawm thermal, thiab lub thickness tseem tsis ruaj khov. Nws yog ib qho tsim nyog yuav tsum tau ua kom sov thiab tos kom sov qhov sib npaug.
