Ntxuam Qhov Txhaj Pwm
Ntxuam Parts
Kev xaiv ntawm cov khoom siv kiv cua yuav tsum tsis yog tsuas yog ua kom cov kiv cua ua haujlwm tau zoo, pab txhawb kev txhim kho cov duab thiab qhov tseeb ntawm qhov chaw, tab sis kuj txhawb kev molding. Yog siv cov khoom siv crystalline lossis semi-crystalline, nws yooj yim los tsim cov kev taw qhia ntws thaum lub sij hawm molding txheej txheem. Thaum lub sij hawm txias txias, lub shrinkage degree ntawm cov khoom yas nyob rau hauv tag nrho cov lus qhia txawv heev. Tsis tas li ntawd, yam xws li kev ua kom txias tsis sib xws yuav ua rau muaj kev ntxhov siab, ua rau cov khoom deformation, thiab deformation ntawm cov khoom tom qab ua tiav kuj tseem loj, thiab qhov yuav tsum tau ua thiab qhov loj me tsis tuaj yeem lav, yog li txo qhov raug thiab kev ua haujlwm ntawm tus kiv cua. cov hniav. Yog li ntawd, nws yog qhov zoo tshaj plaws los siv cov yas amorphous nrog cov nqi me me, xws li polystyrene, ABS, AS, thiab lwm yam. Polyethylene plastics feem ntau tsis siv vim tias lawv cov brittleness siab thiab tsis zoo cuam tshuam, thiab lawv nquag tawg thaum siv. Kev ua tau zoo ntawm ABS thiab AS yas yog qhov sib xws, ntawm cov nqi ntawm ABS yog qhov siab. Yog li ntawd, feem ntau ntawm cov yas siv tam sim no yog AS yas.
Pwm Ua Sijhawm
1. Tom qab kos npe rau daim ntawv cog lus, yuav muaj 3-4 hnub los xyuas nrog tus neeg siv khoom ua ntej, thiab ob tog yuav sib tham txog qee qhov kev xav tau ntawm pwm;
2. Lub sij hawm tsim pwm yog li ntawm 5-7 hnub, thiab kev yuav khoom yuav tau ua nyob rau tib lub sijhawm;
3. Lub sij hawm tsim pwm yog li ntawm 20-35 hnub, uas txawv raws li qhov loj thiab qhov nyuaj ntawm cov pwm;
4. Lub sijhawm kuaj pwm thiab tshuaj xyuas yog li 2-3 hnub; Feem ntau, qhov yuav tsum tau ua tiav tom qab 3 qhov kev sim.
