Dab tsi yog qhov tsis xws luag ntawm cov khoom siv thermoplastic?

1. Peb qhov taw qhia los ntsuas qhov zoo ntawm cov khoom yas 1. Cov tsos zoo: suav nrog kev ncaj ncees, xim thiab gloss;
2. Qhov loj thiab qhov txheeb ze: ua raws li cov khoom kos duab thiab kev sib dhos;
3. Cov khoom siv hluav taws xob thiab tshuaj lom neeg muaj feem xyuam rau kev siv: xws li tensile test, impact test, environmental resistance test, thiab lwm yam
2. Yog vim li cas rau cov khoom tsis xws luag:
1. Cov teeb meem yas: suav nrog cov khoom siv yas zoo thiab cov khoom kom qhuav;
2. Cov teeb meem kho tshuab: suav nrog kev txhaj tshuaj siab, kub thiab lub voj voog;
3. Pwm teeb meem: suav nrog pwm tsim, tsim thiab hnav. Qhov teeb meem pwm yog qhov teeb meem feem ntau thiab nyuaj los daws
3. Kev tshuaj xyuas qhov tsis xws luag thiab kev daws teeb meem
1. Kev txhaws tsis txaus (luv luv luv): cov khoom siv roj hmab puv tsis tiav, lossis ib tus kab noj hniav tsis txaus thaum muaj ntau cov kab noj hniav.
(1) Kev hloov pauv tsis raug, tsis txaus lossis khoom siv ntau dhau;
(2) Kev txhaj tshuaj tsis txaus, kub thiab sijhawm;
(3) Cov khoom kub tsis txaus;
(4) Cov pwm tsim yog tsis tsim nyog: tus khiav yog ntev dhau lawm thiab muaj ntau lem; Lub cev tsis zoo; Lub qhov dej txias ntawm tus khiav tsis txaus; Tus naj npawb ntawm cov kab noj hniav hauv cov kab noj hniav ntau dhau lawm, qhov kev sib dhos tsis raug, lub rooj vag txoj hauj lwm thiab daim ntawv tsis raug lossis tus lej tsis txaus. Kev tsim qauv kev thauj mus los hauv dej tsis tsim nyog
2. Flash: redundant nyias fins tshwm nyob rau ntawm ntug ntawm cov khoom yas, sib koom ua ke ntawm inserts thiab ejector tus pin.
(1) Kev tsim pwm tsis zoo;
(2) Tsis tsim nyog pwm tsim:
 -- Cov qib tsis tsim nyog thiab tsis sib npaug siab;
 -- Qhov chaw tsis zoo ntawm qhov rooj ua rau cov khoom tsis txaus ntawm ib sab thiab ntse ntug ntawm lwm qhov;
 -- Lub xauv quab yuam ntawm kab txoj hauj lwm tsis txaus.
 -- Cov pwm tso tawm tsis zoo, thiab qhov chaw sib cais yog ncab rau hauv siab.
(3) Lub xauv lub zog ntawm lub tshuab npias tsis txaus;
(4) Kev hloov kho tshuab tsis raug: siab dhau lawm, kub siab dhau thiab pub mis ntau dhau.
3. Nyiaj streaks (feem ntau hu ua silver streaks): npuas nyob rau saum npoo tawg. Thaum cov yas ntim nrog dej vapor ntau dhau, cov pa roj decomposition, cov roj hnyav thiab cua, cov khoom siv nyiaj xws li rab koob los yog mica flake yog tsim rau saum npoo ntawm cov khoom raws li cov khoom ntws.
(1) Cov dej vapor.
(2) Decomposition gas: cov khoom siv kub, cov yas tsis zoo thiab lub zog shear ntau dhau.
(3) Cov yas tsis huv.
4. Cov cim shrink: qhov saum npoo ntawm cov khoom yas yog pitted vim yog shrinkage sab hauv. Cov laj thawj tseem ceeb yog kev tuav tsis zoo, tsis muaj cua txias, ntau phab ntsa thickness lossis pob txha dav, thiab tsis muaj preheating ntawm inserts.
Cov ntsiab lus ntawm kev sib hais haum:
(1) Phab ntsa thickness yuav tsum sib xws li ua tau.
(2) Ua kom txias txias ntawm cov phab ntsa tuab.
(3) Lub rooj vag system yuav tsum tau tsim tsim nyog:
A. Qhov luaj li cas ntawm cov txheej txheem pouring yuav tsum sib haum nrog qhov loj, phab ntsa thickness thiab complexity ntawm cov roj hmab qhov chaw;
B. Lub rooj vag yuav tsum sib haum mus rau qhov chaw nrog phab ntsa tuab uas yooj yim rau shrink.
(4) Kev hloov kho
A. Ua kom lub zog txhaj tshuaj, lub sijhawm tuav lub sijhawm thiab lub sijhawm txhaj tshuaj;
B. Ua kom nrawm nrawm
5. Weld kab: tsis zoo fusion, kab los yog lub zog txo ntawm qhov sib koom ua ke vim qhov poob ntawm cov khoom kub thaum cov kua nplaum yaj yog sib cais thiab sib sau ua ke. Cov txheej txheem los txo lossis tshem tawm cov cim vuam yog qhov pib zoo ib yam li qhov shrinkage dent
Thaum lub cim weld tsis tuaj yeem raug tshem tawm
1. Lub rooj vag txoj hauj lwm thiab phab ntsa thickness ntawm lub workpiece tuaj yeem hloov tau los coj cov kab vuam mus rau txoj haujlwm uas tsis cuam tshuam rau qhov zoo li.
2. Qhib lub qhov dej ntws ze ze ntawm txoj kab fusion.
6. Qhov tsis xws luag ntawm pob tshab: (1) Speckle, craze thiab tawg:
1) Tshem tawm cov pa phem,
2) Txo cov khoom kub thiab kho nws hauv ntu,
3) Nce kev txhaj tshuaj siab;
4) Txhim kho qhov ntws channel thiab kab noj hniav;
5) Shorten lub voj voog tsim;
6) Yog tias nws tau tshwm sim, nws tuaj yeem raug tshem tawm los ntawm annealing.
(2) Lub ntsej muag gloss tsis zoo:
A. Cov kab noj hniav tsis zoo polished;
B. Cov khoom molten txias thiab hardens ntxov ntxov, uas tsis tuaj yeem ua kom tiav qhov zoo ntawm cov pwm nto;
(3) Kev vibration ripple:
A. Ua kom qhov kub thiab txias, tshwj xeeb tshaj yog qhov kub thiab txias, thiab ua kom muaj zog txhaj tshuaj thiab ceev;
B. Nce pwm kub;
C. Txhim kho qhov tso pa kom cov khoom ntws nrawm.
(4) Dawb thiab pos huab halo: tshem tawm dej vapor; Ua kom cov khoom kub thiab pwm kub; Nce kev txhaj tshuaj siab thiab rov qab siab.
7. Warpage:
1>Cov teeb meem tsim khoom: cov phab ntsa tsis sib xws thiab cov qauv tsis tsim nyog.
2>Thaum lub sij hawm tsim pwm:
1. Qhov loj thiab daim ntawv ntawm lub rooj vag yuav tsum tsim nyog;
2. Cov cua txias ntawm txhua qhov ntawm cov pwm yuav tsum zoo ib yam.
3>Qhov teeb meem ntawm cov yas ntau yam: lub shrinkage ntawm crystalline plastics (PE, PP, PA, POM, thiab lwm yam) yog loj dua li cov yas tsis-crystalline, thiab cov solidification yog ceev, thiab cov khoom yog yooj yim rau warp;
4>Kev kho:
(1) Cov khoom siv kub yuav tsum tsis txhob qis lossis siab dhau;
(2) Ua kom lub zog txhaj tshuaj, lub sijhawm thiab ceev;
(3) Ua kom lub sijhawm tuav lub zog;
(4) Tom qab demoulding, siv fixture kom zoo los yog temper.