Zomwe Screw Barrel Imachita Kwenikweni
Zomangira ndi mbiya zimagwira ntchito ngati ziwiri zofananira. Nayi ndandanda iliyonse yozungulira:
- Kudyetsa- Ma pellets apulasitiki amatsika kuchokera ku hopper kupita kumalo odyetserako chakudya.
- Kusungunuka- Chomangira chozungulira chimatulutsa kutentha kwa shear. Kuphatikizidwa ndi mbiya heaters, pellets kusungunuka ndi compress.
- Kuyeza- The Sungunulani amakhala yunifolomu kutentha ndi kuthamanga pamaso jekeseni.
- Jekeseni- Zowononga zimapita patsogolo ngati plunger, kukankhira pulasitiki yosungunuka mu nkhungu.
Kusintha kulikonse - geometry, kuchuluka kwa zigawo, chithandizo chapamwamba - zimakhudza momwe masitepe anayiwo amachitikira. Kusagwirizana mwa aliyense wa iwo kumawoneka ngati vuto la kupanga.
Chigamulo 1: Chiŵerengero cha L/D
Chiyerekezo cha L / D (kutalika kwa screw kugawanika ndi m'mimba mwake) ndi nambala yofunikira kwambiri papepala. Imalamulira nthawi yokhalamo, kusakaniza khalidwe, ndi kugawa kutentha.Nthawi zambiri jekeseni wamba amagwiritsa ntchito 20:1.
| Utomoni | L/D yovomerezeka |
|---|---|
| PP, PE, PS (standard) | 18:1 – 20:1 |
| ABS, PC | 20:1 – 24:1 |
| PVC (yotengera kutentha) | 16:1 – 20:1 |
| PET | 20:1 – 22:1 |
| Nylon (PA) | 18:1 – 20:1 |
| Zida zolimbitsa GF | 20:1 – 24:1 |
Chigamulo 2: Compression Ration
The compression ratio (CR) imayesa kuchuluka kwa screw channel kuchepera kuchokera ku feed zone kupita ku metering zone. CR yapamwamba imakakamiza kusungunula mwamphamvu kwambiri - zabwino kwa ma amorphous resins omwe amafewa pang'onopang'ono. Lower CR ndi yofatsa, ndizomwe mumafunikira pazida zosamva kutentha kapena zodzaza ndi fiber.
| Utomoni | Compression Ration |
|---|---|
| ABS, PC, PMMA (amorphous) | 3.0 - 3.5:1 |
| PP, PE, nayiloni (semi-crystalline) | 2.5 – 3.0:1 |
| Zithunzi za PVC | 2.0 - 2.5:1 |
| PET | 2.3 – 2.6:1 |
| GF-yolimbitsa (≥15%) | 2.0 - 2.5:1 |
Chigamulo 3: Zone Proportions
Sipakapaka wamba wa jakisoni amagawidwa m'magawo atatu. Kuchuluka kwa zone iliyonse kumatengera kuchuluka kwa L/D.
- Malo Odyera (L1):Njira zozama zomwe zimavomereza ma pellets olimba kuchokera ku hopper. Kutali = kuchulukirachulukira.
- Compression Zone (L2):Kuzama kwa Channel kumachepa pang'onopang'ono. Nthawi zambiri kusungunuka kumachitika apa.
- Malo Oyezera (L3):Makanema osaya, osasinthasintha. Imatsimikizira kutentha kofananako kusungunula ndi kupanikizika musanabayidwe.
| Utomoni | Zakudya (L1) | Kuponderezana (L2) | Kuyeza (L3) |
|---|---|---|---|
| PP/PE | 50% | 25% | 25% |
| ABS / PC | 40% | 40% | 20% |
| PET | 40% | 40% | 20% |
| Nylon (PA) | 35-45% | 35-40% | 20-25% |
| Zithunzi za PVC | 35% | 50% | 15% |
Chisankho cha 4: Zofunika za Screw Barrel
38CrMoALA — The Standard Baseline
Zomangira jekeseni wa Nanhaiya amapangidwa kuchokera38CrMoALA aloyi zitsulo, kutentha ndi kuzimitsidwa. Zinthu zoyambira izi zimagwira ma thermoplastics wamba ngati PE, PP, PS, ndi ABS bwino, okhala ndi moyo wantchito pafupifupi10,000-20,000 maolapansi pazikhalidwe zogwirira ntchito.
Nitriding
Gesi nitriding pa 500-560 ° C amapanga nitrided wosanjikiza0.5-0.8 mm wandiweyanindi kuuma kwa950–1050 HV (~62 HRC). Izi zimathandizira kukana kuvala ndi 30-40% poyerekeza ndi chitsulo chosasamalidwa. Muyezo wazinthu zambiri zomangira jakisoni zomwe zili ndi zida zosadzaza kapena zodzaza pang'ono.
Nanhaiya mutant (mwadzidzidzi) jekeseni zomangira zomangira - zoyenera ma crystalline resin monga PP, PE, ndi nayiloni.
Bimetallic - Kwa Mapulogalamu Abrasive
Migolo ya bimetallic imakhala ndi zomangira zazitsulo zokhala ndi aloyi zapamwamba zomwe zimamangiriridwa ndi mbiya. Njira ya Bimetallic ya Nanhaiya imakwaniritsamkati anabala kuuma kwa 62 HRCkudzera mu kuwotcherera kolimba kwa alloy kutsitsi kuzungulira madera ovala kwambiri amkati mwa mbiya.
| Kugwiritsa ntchito | Screw Material | Chithandizo cha Mimbi |
|---|---|---|
| PE, PP, PS (osadzaza) | 38CrMoALA nitrided | Standard nitrided |
| ABS, PC, nayiloni (osadzaza) | 38CrMoALA nitrided | Standard nitrided |
| PA + GF ≤30% | 38CrMoALA, wozimitsidwa + wopsya mtima | Nitrided kapena bimetallic |
| Zokhutira za GF 15-50% | Bimetallic / TC m'mphepete mwa ndege | Bimetallic |
| PVC / corrosive resins | Aloyi wosagwirizana ndi dzimbiri | Bimetallic (CR grade) |
| Mpweya wa carbon wodzazidwa | Tungsten carbide | TC-sprayed bore |
Chosankha 5: Screw Diameter ndi Kuwombera Kukula
Kuwombera kwanu kwenikweni kuyenera kugwera pakati35% ndi 70%wa phula pazipita kuwombera mphamvu. Pansi pa 35%, zinthu zimakhala mu mbiya motalika kwambiri ndipo zimatha kuwonongeka. Pamwamba pa 70%, zowononga sizingachira msanga mkati mwa kuzungulira.
Pansipa pali masinthidwe omwe amapezeka ku Nanhaiya:
| Kuchuluka kwa jakisoni (g) | Sikirini Ø × Utali (mm) | Mgolo Ø × Utali (mm) |
|---|---|---|
| 30-90 | Φ30×900 | Φ85×860 |
| 60-125 | Φ35×910 | Φ85×860 |
| 100-150 | Φ38×935 | Φ95×900 |
| 125-300 | Φ42×1030 | Φ105×1110 |
| 250-400 | Φ45×1210 | Φ115×1165 |
| 300-500 | Φ50×1300 | Φ125×1260 |
| 500-700 | Φ60×1380 | Φ140×1350 |
| 700-1000 | Φ70×1790 | Φ160×1685 |
| 1000-1500 | Φ160×3500 | Φ270×3200 |
| 1300-2500 | Φ170×3415 | Φ317×3380 |
Nanhaiya pang'onopang'ono jakisoni akamaumba wononga - bwino kwa resins amorphous ngati ABS, PC, ndi PMMA.
Zizindikiro Zochenjeza Kuti Chingwe Chanu Chatsopano Ndi Cholakwika Pantchitoyo
- Madontho akuda kapena zopsereza- Kuwonongeka kwa zinthu chifukwa chokhala ndi nthawi yayitali kapena malo otentha. Yang'anani kutentha kwa mbiya ndikuchotsa zowononga.
- Kulemera kwa kuwombera kosagwirizana-Nthawi zambiri valavu yosabwerera kapena kutulutsa kopitilira muyeso komwe kumalola kubwerera m'mbuyo.
- Masewero pamwamba- Chinyezi kapena gasi mukusungunuka. Zitha kuwonetsa kusawumitsa kokwanira kapena screw geometry yomwe siyikutuluka bwino.
- Kuchira pang'onopang'ono / nthawi yayitali yozungulira- Kuchuluka kwa pulasitiki sikukwanira. Mlingo wa screw uyenera kuwonjezeka.
- Zowonongeka kwambiri pakusintha kwamitundu- Kusakanizika koyipa muzoni ya mita. Chinthu chosakanikirana cha Maddock kapena chotchinga chomwe chimawonjezeredwa ku screw nthawi zambiri chimathetsa izi.
Zoyenera Kuuza Wopanga Anu Akamafunsira Matchulidwe
- Mtundu wa makina ndi chitsanzo- kapena kukhala ndi mainchesi ndi makulidwe a flange pamakina omwe si wamba
- Utomoni woyamba (ma)- kuphatikiza mtundu wa zodzaza ndi kuchuluka ngati kuli koyenera
- Mtundu wowombera- osachepera ndi opambana mu magalamu
- Nthawi yozungulira yomwe mukufuna
- Mavuto omwe mukuyesera kuwathetsa- ngati alipo
Pezani Malangizo Aukadaulo kuchokera ku Nanhaiya
Timayankha mkati mwa maola 12. Gulu lathu la mainjiniya litha kutchula jiometri yoyenera, mtundu wazinthu, ndi makulidwe a makina anu ndi utomoni wanu - musanapereke ndemanga.
