ABS filastikya mamaye wani muhimmin matsayi a cikin masana'antar lantarki, masana'antar injina, sufuri, kayan gini, masana'antar kayan wasan yara da sauran masana'antu saboda ƙarfin injinsa da ingantaccen aiki mai kyau, musamman don ƙirar akwatin ɗan ƙaramin girma da abubuwan damuwa. , sassan kayan ado waɗanda ke buƙatar electroplating ba za su iya rabuwa da wannan filastik ba.
1. Drying na ABS filastik
ABS filastik yana da babban hygroscopicity da babban ji na danshi. Isasshen bushewa da preheating kafin aiki ba zai iya kawar da ƙurar wuta-kamar kumfa da zaren azurfa a saman kayan aikin da tururi ya haifar ba, amma kuma yana taimaka wa robobi su samar, don rage tabo da moire a saman kayan aikin. Ya kamata a sarrafa danshi abun ciki na albarkatun ABS a ƙasa da 0.13%.
Yanayin bushewa kafin yin gyare-gyaren allura: A cikin hunturu, yawan zafin jiki ya kamata ya kasance ƙasa da 75-80 ℃, kuma yana ɗaukar awanni 2-3; a lokacin rani, zafin jiki ya kamata ya kasance ƙasa da 80-90 ℃ kuma ya wuce 4-8 hours. Idan workpiece yana bukatar ya yi kama da m ko workpiece kanta ne hadaddun, da bushewa lokaci ya kamata ya fi tsayi, kai 8 zuwa 16 hours.
Saboda samuwar danshi, hazo da ke sama wata matsala ce da ake yawan mantawa da ita. Zai fi kyau a canza hopper na injin zuwa na'urar busar da iska mai zafi don hana busasshen ABS daga shan danshi a cikin hopper. Ƙarfafa kula da zafi don hana zazzaɓi na kayan aiki lokacin da aka katse samarwa da gangan.
2. zafin allura
Dangantaka tsakanin zafin jiki da narke danko na filastik ABS ya bambanta da na sauran robobin amorphous. Lokacin da yawan zafin jiki ya karu a lokacin tsarin narkewa, narkewar yana raguwa sosai kadan, amma da zarar ya kai ga zafin jiki na filastik (tsarin zafin jiki wanda ya dace da aiki, kamar 220 ~ 250 ℃), idan zafin jiki ya ci gaba da karuwa a makanta, juriya na zafi. ba zai yi girma da yawa ba. Rushewar thermal na ABS yana ƙara dankon narkewa, yinallura gyare-gyaremafi wuya, da inji Properties na sassa kuma sun ƙi.
Saboda haka, zafin allura na ABS ya fi na robobi irin su polystyrene, amma ba zai iya samun kewayon hawan zafi mai sauƙi kamar na ƙarshe ba. Ga wasu injunan gyare-gyaren allura da rashin kulawar zafin jiki, lokacin da samar da sassan ABS ya kai adadi, sau da yawa ana samun nau'in launin rawaya ko launin ruwan kasa a cikin sassan, kuma yana da wuya a cire shi.
Dalili kuwa shine filastik ABS ya ƙunshi abubuwan butadiene. Lokacin da barbashi na filastik ya tsaya tsayin daka ga wasu filaye a cikin tsagi na dunƙule waɗanda ba su da sauƙin wankewa a babban zafin jiki, kuma an sanya shi cikin matsanancin zafin jiki na dogon lokaci, zai haifar da lalacewa da carbonization. Tun da yawan zafin jiki na aiki na iya haifar da matsaloli ga ABS, ya zama dole don iyakance zafin wutar lantarki na kowane sashe na ganga. Tabbas, nau'ikan daban-daban da kuma abubuwan da ke ciki na abs suna da yanayin zafi na wutar lantarki. Irin su plunger inji, da tanderun zafin jiki ne kiyaye a 180 ~ 230 ℃; da dunƙule inji, da tanderun zafin jiki ne kiyaye a 160 ~ 220 ℃.
Yana da mahimmanci a ambaci cewa, saboda yawan zafin jiki na aiki na ABS, yana da damuwa ga canje-canje a cikin abubuwan tsari daban-daban. Sabili da haka, kula da zafin jiki na ƙarshen gaban ganga da ɓangaren bututun ƙarfe yana da mahimmanci. Aiki ya tabbatar da cewa duk wani ƙananan canje-canje a cikin waɗannan sassa biyu za a bayyana a cikin sassan. Mafi girman canjin zafin jiki, zai kawo lahani irin su weld dinki, rashin kyalli, walƙiya, mannewa mold, canza launi da sauransu.
3. Matsin allura
Dankowar sassan narkewar ABS ya fi na polystyrene ko polystyrene da aka gyara, don haka ana amfani da matsa lamba mafi girma yayin allura. Tabbas, ba duk sassan ABS ba ne ke buƙatar matsa lamba, kuma ana iya amfani da ƙananan matsi na allura don ƙananan sassa, sassauƙa, da kauri.
A lokacin aikin allurar, matsa lamba a cikin rami a lokacin da aka rufe kofa sau da yawa yana ƙayyade ingancin yanayin ɓangaren da kuma nauyin lahani na filamentous na azurfa. Idan matsa lamba ya yi ƙanƙanta, filastik yana raguwa sosai, kuma akwai babbar dama ta kasancewa daga nesa da saman rami, kuma saman aikin yana atomized. Idan matsa lamba ya yi girma sosai, rikici tsakanin filastik da saman rami yana da ƙarfi, wanda ke da sauƙin haifar da danko.
4. Gudun allura
Don kayan ABS, yana da kyau a yi allurar a matsakaicin gudu. Lokacin da saurin allura ya yi sauri, robobin yana da sauƙin ƙonewa ko bazuwa kuma a sanya gas, wanda hakan zai haifar da lahani kamar walda, ƙarancin kyalli da jajayen robobin kusa da ƙofar. Koyaya, lokacin samar da sassa na bakin ciki da hadaddun, har yanzu yana da mahimmanci don tabbatar da isasshen saurin allura, in ba haka ba zai yi wahala cikawa.
5. Mold zafin jiki
A gyare-gyaren zafin jiki na ABS ne in mun gwada da high, kazalika da mold zafin jiki. Gabaɗaya, ana daidaita yawan zafin jiki zuwa 75-85 ° C. Lokacin samar da sassa tare da babban yanki mai tsinkaya, ana buƙatar ƙayyadadden zafin jiki ya zama 70 zuwa 80 ° C, kuma ana buƙatar zazzabi mai motsi ya zama 50 zuwa 60 ° C. Lokacin yin allurar manyan, hadaddun, sassa na bango na bakin ciki, ya kamata a yi la'akari da dumama na musamman. Domin ya rage samar da sake zagayowar da kuma kula da dangi kwanciyar hankali na mold zafin jiki, bayan da sassa da aka dauka fitar, wani sanyi ruwan wanka wanka, da ruwan zafi wanka ko wasu inji saitin hanyoyin da za a iya ramawa ga asali sanyi kayyade lokaci a cikin. rami.
Lokacin aikawa: Afrilu-13-2022
