Dip Molding Technology ndi Kugwiritsa Ntchito Kwake mu Magalimoto
Akatswiri opanga magalimoto ndi odziwa bwino njira monga kuumba jekeseni, makina osindikizira, electroplating, kupopera mbewu mankhwalawa, ndi njira zina zopangira. Komabe, ukadaulo woumba pulasitiki ungakhale wachilendo kwa iwo chifukwa sunagwiritsidwe ntchito m'maiko ena omwe akutukuka kumene, ndi mbiri ya zaka pafupifupi 30 zokha. Mosiyana ndi zimenezi, m'madera otukuka monga United States ndi Europe, teknoloji yopangira dip yapangidwa kwambiri kuyambira Nkhondo Yachiwiri Yapadziko Lonse, yomwe idagwiritsidwa ntchito poteteza zida zankhondo monga zomwe zimapezeka m'magalimoto ndi ndege. Tekinolojeyi ili ndi mbiri ya zaka pafupifupi 70.
Tekinoloje ya Dip molding idapangidwa chifukwa chopezeka PVC plastisol chuma, chinthu chamadzimadzi cha sol chopangidwa kuchokera PVC pulasitiki ufa ndi plasticizer. Izi zidapezeka koyamba mu 1913 ndipo kugwiritsidwa ntchito kwake kudafalikira pankhondo yachiwiri yapadziko lonse.
Dip Molding Njira
The processing ndondomeko dip akamaumba akuwonetsedwa pansipa:
Kuumba koviika kumaphatikizapo njira zisanu zazikulu: kutenthetsa, kumiza, kuchiritsa, kuziziritsa, ndi kuchotsa matope. Pambuyo polandira chithandizo chamankhwala (kudula mchira), mankhwalawa amaonedwa kuti ndi omalizidwa. Pomaliza, imayamba kusanja, kulongedza, ndikusunga.
Kutentha
Cholinga chake ndikupangitsa kuti plastisol yamadzimadzi isungunuke pamwamba pa nkhungu yotentha. Chifukwa cha kusiyanasiyana kwa nkhungu ndi mtundu wa plastisol, kutentha kwa preheating ndi nthawi kumatha kusiyana. Nthawi zambiri, nkhungu zazikulu zimafuna kutentha kwambiri komanso nthawi yayitali, pomwe nkhungu zing'onozing'ono zimakhala ndi kutentha kochepa komanso nthawi yayifupi. Kuphatikiza apo, zinthu ndi kutentha kwa nkhungu, komanso makulidwe ndi kuuma kwa chinthucho, zimatha kusiyanasiyana, zomwe zimafunikira kutentha ndi nthawi zosiyanasiyana. Chifukwa chake, ndikofunikira kuchita mayeso motengera momwe zinthu ziliri kuti mudziwe njira zoyenera.
Kudya
The nkhungu otentha kumizidwa mu plastisol madzi pa liwiro zosakwana 10mm/s, ndi nkhungu kukweza liwiro ndi zosakwana 5mm/s. Nthawi yoviika imasinthidwa molingana ndi kukula ndi makulidwe a chinthucho, nthawi zambiri kuyambira 1 mpaka masekondi 60.
Kuchiritsa (Plasticizing)
Cholinga chake ndikuwonetsetsa kuti chinthucho chikukhazikika bwino ndikukhala ndi mawonekedwe ake omaliza. Kutentha kwa machiritso ndi nthawi ziyenera kusinthidwa molingana ndi nkhungu, kukula kwa voliyumu, komanso kuuma komwe kumafunidwa komanso makulidwe ake. Nthawi zambiri, kutentha kwa machiritso kumakhala pakati pa 200 ndi 350 digiri Celsius, pomwe nthawi yopangira pulasitiki imachokera ku masekondi 10 mpaka 90.
Wozizilitsa
Cholinga chake ndikupititsa patsogolo ntchito zopanga zambiri, njira zoziziritsa zimaphatikizapo kuziziritsa kwamadzi ndi kuziziritsa mpweya.
Demoulding
Njira yowonongera zinthu zomwe zidalowetsedwa ndi plastisol nthawi zambiri zimakhala zopumira. Komanso, palibe demoulding chofunika ndi kuviika TACHIMATA mankhwala.
Zida za Plastisol Zopangira Dip Molding
Pakali pano, pali mitundu itatu ikuluikulu ya zinthu zamadzimadzi plastisol:
- Latex yokhala ndi madzi ngati sing'anga yobalalika, monga latex yachilengedwe, latex yopangidwa (rabala ya nitrile, mphira wa polyisoprene, polyurethane, etc.);
- Njira zosungunulira za polima ndi zosungunulira (xylene, tetrahydrofuran, dimethylacetamide, etc.) monga zofalitsa zobalalika, monga polyurethane, yankho la rabara lamadzimadzi silikoni;
- Plasticizer sol (makamaka amatanthauza PVC plastisol ), ndiko kuti, kuyimitsidwa kwamadzimadzi opangidwa ndi plasticizer ndi PVC phala.
Zofunikira pazida zomwe zimagwiritsidwa ntchito poviika zimasiyana kutengera mtundu wa zida komanso momwe akufunira. Pepalali makamaka limafotokoza zofunikira zakuthupi PVC plastisol. PVC plasticizer sol ndi yosiyana ndi mitundu ina iwiri ya zida, popeza sing'anga yobalalitsa ndi pulasitiki yomwe imakhala yosasunthika panthawi yotentha. Ndi yogwirizana ndi PVC phala plasticizer, kuchititsa zofewa (rabala boma) kapena theka-olimba mawonekedwe a PVC Chifukwa cha kuphweka kwake, kuyendetsa bwino kwambiri (kopanda chipangizo chothandizira kukonzanso makina opangira zida), mtengo wotsika wa zinthu, kufewa, ndi zinthu zabwino kwambiri zamagetsi, PVC sol yakhala yogwiritsidwa ntchito kwambiri poviika. Amagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana monga mphamvu (busbar), magawo amagetsi, zofunikira zatsiku ndi tsiku, chitetezo cholumikizana ndi fiber optical, komanso chitetezo chamankhwala. Ku United States, Europe, Japan, ndi India, kukwezedwa kwa PVC teknoloji yapulasitiki ndi yokhwima kwambiri. China ndi malo opangira magetsi PVC kupanga ndi kutumiza kunja; komabe, zake PVC teknoloji ya plastisol inayamba mochedwa.
Ndi kupita patsogolo kwaukadaulo wazinthu komanso kukula kwa magawo ogwiritsira ntchito, ntchito za PVC Zida za plastisol zawonjezeka pang'onopang'ono, makamaka kuphatikiza zoletsa moto, kukana kwa radiation ya UV, kutchinjiriza, chakudya, biocompatible (zachipatala), zopanda phthalate, zosagwira mafuta. Mwa iwo, PVC plastisol yomwe ili ndi phthalates inali yoyamba kuletsedwa ndi Europe (phthalates idzasokoneza endocrine ya amuna, kuwonjezera mwayi wa khansa ya m'mawere ya amayi), ndikukhazikika pang'onopang'ono, kuti achepetse kugwiritsa ntchito mapulasitiki ochiritsira, malamulo a EU REACH / RoHS ndi kuchulukirachulukira.
Kugwiritsa Ntchito Dip Molding Technology mu Magalimoto
Plastisol mumsika wamagalimoto kugwiritsa ntchito koyamba kwa Ford mota mu 1959, China idayamba kupanga magalimoto. PVC plastisol zinthu m'ma 1980, mowa ambiri 6-10kg, mlandu pafupifupi 35% ya kuchuluka kwa guluu. Monga zotchingira zodzitchinjiriza zamagalimoto ndi zida zosindikizira magawo osiyanasiyana agalimoto. Galimoto kuchokera ku gudumu kupita ku zomangira zazing'ono kwambiri, pali zoteteza zoposa 10,000, zigawozi makamaka zokutira pulasitiki, zisoti zoteteza, jekete, bushings ndi zina zotero. Zowonjezera zimakhala ndi mawonekedwe osiyanasiyana komanso mawonekedwe osinthika, omwe ndi oyenera kwambiri kupanga ndiukadaulo wothira.
Galimoto Wiring Harness Sheath
Chipolopolo cha pulasitiki chimagwiritsidwa ntchito popanga ma wiring harness, makamaka poteteza ma plug ma waya agalimoto, okhala ndi zotsekera, zotchingira moto, kukana kutentha, ntchito zoteteza chilengedwe.
Chitetezo cha Battery Discharge
Ukadaulo wakuumba wa pulasitiki umagwiritsidwa ntchito poteteza zolumikizira za batri ndi mipiringidzo yamkuwa ya mabatire atsopano amphamvu. Ili ndi mawonekedwe osinthika kapangidwe kamangidwe, kuzungulira kwachitukuko komanso makonda.
Automobile Wire Clamp ndi Pole Protection
Ukadaulo wa impregnation umagwiritsidwa ntchito poteteza waya wama waya wamagalimoto ndi magawo a ndodo, omwe amatha kupanga chitetezo chosinthika komanso ntchito zotsutsana ndi dzimbiri komanso zotsimikizira fumbi.
