Hka lum ai hka n-gun a majaw, Crystal hpe gang je kau ai/Extrusion galaw ai ladat ni hta byin wa ai akyu

 

C temperature gaw crystal pulling hte extrusion molding lahkawng yan hta ahkyak ai process parameter langai rai nna, dai gaw arung arai a hkamja lam, galaw shapraw ai atsam, hte jak rung a ngang grin ai lam ni hpe hkrak dawdan ya lu ai. Shi a n-gun atsam gaw, galaw sa wa ai lam yawng hpe shinggrup da nna, n bung ai nbung katsi ai shara ni a akyu ni hta ahkyak ai shai hkat ai lam ni nga ai, galaw sa wa ai lam a madung ra kadawn ai lam ni hte maren, hkrak tup hkang zing ra ai. Lahta na lam ni gaw, hka katsi ai hka n-gun a majaw ndai ladat lahkawng hta hkra machyi ai lam ni hpe hkrak tup tsun dan da ai, tengman ai galaw shapraw ai mabyin masa ni a masa hta hkang zing ai shara ni hpe sang lang dan ai.

 

 

I. Hka katsi ai hka n-gun a majaw Crystal hpe htu shaw ai lam hta hkra machyi ai lam

 

Crystal hpe gang je kau ai lam a madung (singlestal hte polycrystalline rawt jat lam lawm ai) gaw, thermal field hpe hkrak hkrak hkang lu ai hku nna, melt kaw nna solid state de crystals ni hpe hkrang shapraw ai hku rawt jat wa hkra galaw na matu re. Hka lum ai hka lum ai prima gaw wan wut ai wan n-gun lum ai ladat ntsa hta bungli galaw nna, solid-liquid interface kaw na lum ai gradient hpe n hkrak ai hku hkang ai, dai hku nna crystal quality hte rawt jat galu kaba wa ai atsam hpe hkra machyi shangun ai.

 

Hka katsi ai aten grai law ai shaloi, coolystem a katsi ai hpe shapraw kau lu ai atsam n hkum tsup ai majaw, wan wut kata na thermal field temperature ni gaw tsaw ai hte n grin ai. Maga mi hku nna, solid-liquid interface gaw ntsa de sit sa wa nna, n-gun ja wa ai, di crystal a hkrang shapraw rawt jat wa ai. Ndai lam gaw, n-gun n rawng ai, n-gun n rawng ai, n-gun rawng ai lamu ga jarit zawn re ai n kaja ai lam ni hpe loi loi hte shabyin ya lu ai, n san seng ai hpe garan ginhka ai lam hpe grau sawng shangun ai, crystal san seng ai lam hte jak rung atsam ni hpe shayawm kau ya ai. Maga mi hku nna, thermal field kaw na ngam nga ai katsi ai hpe aten dep n mai shapraw kau ai majaw, crystal rawt jat galu kaba wa ai aten hpe galu shangun nna, reducinn efficiency hpe shayawm ya lu ai, dai sha n-ga, wan wut ai arung arai ni a asak kaba wa ai lam hpe lawan ladan galaw ya lu ai hte, jak rung a prat hpe kadun shangun lu ai.

 

 

 

 

Hka a n-gun grai yawm ai shaloi, grai katsi mat ai majaw, thermal field tempera grai lawan ai hku hkrat sum mat nna, solid-liquid interface kaw grai kaba ai nbung n-gun gradient byin pru wa ai. Ndai lam gaw n bung ai crystal rawt jat lam ni hpe byin shangun nna, diameter galai shai ai lam ni hte n hkru n kaja ai saces zawn re ai manghkang ni hpe byin shangun chye ai. Dai hte maren, crystal kata hta grai law ai thermal stress byin pru wa ai majaw, hpang na galaw ai shaloi, n-gun yawm mat chye ai. Dai hta n-ga, hka n-gun grai yawm ai majaw, coes ni hta condensation (sh) freezing byin wa nna, line ni hpe pat kau ya ai, cooling system a shingra tara bungli hpe hkra machyi shangun ai, furnace sealing structure hpe pyi hkra machyi shangun ai.

 

 

Kaja wa galaw shapraw ai hta, nlung hpe gang shaw na matu katsi ai hka a n-gun hpe nlung arung arai (silicon, germanium, sapphire zawn re ai) hte rawt jat galu kaba wa ai lam a masat masa ni hpe madung tawn nna hkrak hkrak masat da ra ai. Shi hpe 20-35℃lapran hta hkang lu ai, hka n-gun kaba ni hpe koi lu na matu hka n-gun hpe ngang grin hkra tawn da ai, n-gun n rawng ai hka n-gun rawng ai -liquid interface hte n-gun rawng ai thermal field hpe hkam la lu ai, dai hku nna manu dan ai crystals ni hpe lu la ai.

 

 

II. Hka lum ai hka n-gun a majaw Extrusion Moldg galaw ai lam hta hkra machyi ai lam

 

 

Extrusion molding hta (plastic hte rubber zawn re ai molecular law ai arung arai ni hta jai lang mai ai), katsi ai hka a n-gun gaw, n-gun dat ngut ai hpang na melt ntsa e hkrak sha galaw ya ai majaw, arung arai a hkrang shapraw ai lam, shadawn shadang hkrak ai lam, hte jak rung atsam ni hpe hkra machyi shangun ai. Shi hpe hkang ai lam a rationality gaw hpang jahtum na product pass rate hpe hkrak dawdan ya ai.

 

 

Hka n-gun grai ja ai shaloi, katsi ai n-gun grai shayawm ai majaw, extendmelt shaping aten hpe galu shangun ai. Ndai lam gaw n bung ai arung arai ni hpe shayawm kau ai lam, grai law ai dimensional deviations ni, npu na sink marks hte ripples zawn re ai n kaja ai lam ni hpe loi loi hte shabyin ya lu ai. Heat-sensitive materials (sucas PVC, PE) a matu, hka n-gun grai ja ai gaw, lahkawng lang ngu na n-gun shayawm ai lam byin shangun nna, n-gun shayawm ai lam hte n-gun shayawm ai lam ni hpe byin shangun ai, dai sha n-ga, galaw shapraw ai aten hpe mung galu shangun nna, n-gun shayawm ai lam hpe mung shayawm ya lu ai. Dai hta n-ga, n law htum katsi ai gaw, kata na n-gun hpe tsep kawp n shapraw lu hkra pat shingdang ya ai majaw, hpang lang lang ai shaloi, dai arai gaw n-gun yawm mat nna, n-gun yawm mat chye ai.

 

 

 

 

Hka a n-gun grai yawm ai shaloi, katsi ai lam grai lawan ai majaw, melt ntsa gaw lawan ai hku solidify byin wa nna, kata gaw reains molten byin mat ai. Ndai lam gaw, kata hte shinggan lapran na nbung katsi ai lam kaba hpe loi loi hte shabyin ya nna, dai gaw, dai arung arai kata na kata lam n-gun ni hte, n-gun yawm mat ai zawn re ai manghkang ni hpe byin shangun ai. Dai aten hta, lawan ai hku katsi mat ai gaw, dai arai a ntsa na htoi tu ai hpe shayawm kau ya nna, pitting hte scratches zawn re ai hkrang n kaja ai lam ni hpe byin shangun ai; thin-walled products ni a matu, n hkum tsup ai molding hte excessrrs ni hpe mung byin shangun chye ai.

 

 

Extrusion material amyu myu gaw hka n-gun hpe katsi hkra galaw na matu ra kadawn ai lam amyu myu nga ai. Ga shadawn, n-gun ja ai PVC hpe shapraw na matu hka n-gun hpe 15-25 degree, n-gun ja ai PVC hpe 25-30 degree, polyethylene hte polypropylene hpe 20-30℃lapran hta hkang lu ai. Hpaga lam galaw ai shaloi, hka a katsi ai lam hpe, arung arai a arawn alai, arung arai a shadawn shadang, hkrang ni hpe madung tawn nna, n bung ai shara katsi ai majaw byin pru wa ai arung arai a n kaja ai lam ni hpe koi lu na matu, hka a katsi ai lam hpe maren mara tawn da ra ai.

 

 

 

 

Hpang jahtum, hka katsi ai hka n-gun a akyu gaw, nlung n-gun hpe gang je kau ai hte n-gun dat shapraw ai ladat lahkawng yan hta "n-gun n-gun hpe hkang ai" hte "hpaga lam hpe hkrang shapraw ai/rawt jat wa ai hpe ngang grin hkra galaw ai" ngu ai grup yin hta shinggrup nga ai. Hka n-gun grai ja ai hte n-gun n law ai lahkawng yan gaw, galaw shapraw ai arung arai ni a hkamja lam hpe hkra machyi shangun nna, galaw shapraw ai atsam hpe mung yawm shangun na re. Teng sha galaw shapraw ai hta, galaw sa wa ai lam hta ra kadawn ai lam ni hte arung arai ni a arawn alai ni hpe madung tawn nna, hka n-gun hpe hkrak hkrak hkang zing ai ladat hpe masat da ra ai, galaw sa wa ai lam hta ngang grin ai lam hpe hkam la lu na matu hte, galaw shapraw ai lam a akyu ara ni hpe grau kaja hkra galaw lu na matu.