Kogilashin rovings or gajeren gilashin zaruruwa, babban fiberglass or precio fibra de carbonoana ƙara su zuwa matrix thermoplastic, manufar shine m don inganta kayan aikin injiniya da kayan aikin polymer.Akwai bambance-bambance da yawa tsakanin manyan hanyoyin biyu na ƙarfafa thermoplastics don gyare-gyaren allura, daga yadda ake haɗa su tare da matrix polymer, zuwa matakin aikin da za su iya samarwa, kuma nau'in fiber ɗaya na iya zama ƙari ɗayan ya fi dacewa, amma don da shaper, babban bambanci tsakanin gajere da dogon zaruruwa shine matakin da ake sarrafa su.
Sarrafa dogon fiber yana ƙarfafa thermoplastics
Manufar farko na sarrafa dogon-fiber-ƙarfafa thermoplastics shine kiyaye tsayin fiber, wanda ke da mahimmanci don haɓaka ƙarfi da ƙarfi.Karyewar fiber na iya yin mummunan tasiri a kan kaddarorin hada-hadar polymer kuma yana iya yin watsi da fa'idar amfani da zaren fiber gilashi.Gudanar da rashin dacewa da kayan aiki mara kyau da ƙirar kayan aiki, ko yin amfani da kayan aiki mara kyau ko saiti, na iya haifar da fashewar fiber.
Ba kamar yankakken fiber ƙarfafa robobi, dogayen abubuwan ƙarfafa fiber yawanci ana yin su ta hanyar pultrusion.Tsarin ya ƙunshi mikewagilashins yawoimpregnated da thermoplastic guduro ta musamman impregnation mutu (domin da guduro iya nannade a kusa da kuma bond da zaruruwa), sa'an nan kuma yanke extruded strands a cikin pellets, da zaruruwa a cikin pellets yawanci 12mm Tsawon, cikakken tsawon fasali unidirectional fiber ƙarfafawa. , kuma wannan tsayin yana da mahimmanci don ba da damar polymer don canja wurin damuwa yadda ya kamata zuwa filaye masu ƙarfi.
Lokacin da aka yi amfani da waɗannan pellets don yin gyare-gyaren allura, dogayen zaruruwan suna layi ɗaya kuma suna raunata sosai don samar da kwarangwal na ciki wanda ke ba da ƙarfi da ƙarfi.Idan aka kwatanta da kayan cike da gajeriyar fiber, abubuwan da aka ƙulla an ƙarfafa su da dogayen zaruruwa, kofiberglass fibersko filayen carbon, suna ba da mafi girman ma'aunin ƙarfi-zuwa-nauyi, ƙarfin tasiri, rayuwar gajiya mai tsayi, da tsayin zafin zafi da kwanciyar hankali mafi girma.
Waɗannan kayan ɗorewa suna ba da aikin tsarin kwatankwacin ƙarfe, duk da haka sun fi ƙarfe ƙarfi, kuma suna iya cin gajiyar fa'idodin sarrafa allura.1k carbon fiber zaneyana da mahimmanci musamman a matsayin maye gurbin ƙarfe saboda sun fi 70% sauƙi fiye da karfe kuma sun fi karfe.Aluminum ya fi sauƙi 40%, don haka za a iya amfani da kayan haɗin fiber mai tsawo don kera abubuwan da ake buƙata a cikin motoci, kayan wasanni, sararin samaniya, kayan masarufi da kayan masana'antu.Hannun resins na yau da kullun sun haɗa da polyamide (PA ko nailan), polypropylene (PP), polyurethane mai tsauri (ETPU), da resins mai zafi kamar polyetheretherketone (PEEK), polyphthalamide (PPA), da polyamide.Ether imide (PEI) da dai sauransu Duk da yake ana iya ƙarfafa kowane thermoplastic tare da zaruruwa, kawai wasu suna ba da mafi girman aiki saboda an ƙarfafa su.Fiye da daidai, resins na semi-crystalline sun fi ƙarfafa da zaruruwa fiye da resin amorphous, wanda ke nufin cewa taurinsu da ƙarfin su ya karu har ma.
Wuraren sarrafawa na Dogayen Abubuwan Karfafa Fiber
Idan aka kwatanta da resins ɗin da ba a canza ba ko granular foda mai cike da foda, gyare-gyaren gyare-gyaren gyare-gyaren fiber mai tsayi yana da wasu buƙatu akan ƙira, ƙofofi, kayan gyare-gyare, da ƙirar sashi.Hanyoyin da ake amfani da su don sarrafa waɗannan kayan kuma sun bambanta da na gajeren fiber ƙarfafa polymers.
Kamar yadda aka ambata a baya, kiyaye tsawon fiber shine mabuɗin nasara.Abubuwan da za su iya haifar da raguwar tsawon fiber sun haɗa da matsa lamba mai ƙarfi da ƙarfi daga dunƙulewar allura, kamar yadda za a iya samun kusurwoyi masu kaifi a cikin mold da tsarin mai gudu.Don kula da tsawon fiber, akwai mahimman abubuwan sarrafawa guda 3 da ya kamata ku sani:
1. Mold abu da zane
Ko da yake dogayen zaruruwa suna sa ƙasa da ƙima fiye da gajerun zaruruwa saboda akwai ƙarancin ƙarancin allura-kamar fiber waɗanda ke shafar ƙirar, nau'in nau'in ƙwanƙwasa iri ɗaya ya dace da polymers masu ƙarfi na dogon fiber da gajere, mafi yawan gama gari Na farko. shi ne P20 mold karfe, wanda zai iya jure fiye da 100,000 allura ci gaba.Idan ana buƙatar ƙarfin ƙarfi mafi girma (sama da hawan allura 100,000), H13 chrome molybdenum karfe ko taurin iska ta A9 shine mafi kyawun zaɓi.Gabaɗaya, ƙwanƙwasa ƙwanƙwasa sune mafi kyawun zaɓi don sarrafa fiber-reinforced thermoplastics.Don kayan kwalliyar da aka sawa, ana iya sabunta su ta amfani da fasahar lantarki.Ana iya amfani da gyare-gyaren aluminum ma idan an samar da samfurori don tabbatar da ƙira.
2. Samar da kayan aiki
Za'a iya sarrafa ma'aunin zafin jiki mai tsayin fiber ta amfani da daidaitaccen kayan gyaran allura tare da ƴan gyare-gyare marasa ɗorewa don adana tsayin fiber da ɗaukar mafi girman ɗanƙoƙi.Ana ba da shawarar ƙaramin matsa lamba ko maƙasudin manufa ta gaba ɗaya tare da zoben da ba zai dawo ba wanda ke ba da izinin kwarara kyauta a saman.Za a iya amfani da nozzles na gaba ɗaya, amma nozzles na nailan ya kamata a kauce masa saboda siffar hourglass (wanda aka tsara don hana bushewa) yana ƙuntata kwarara, yana haifar da shear, kuma yana haifar da zubar da fiber.Wata hanyar da za a rage shear ita ce guje wa ƙirar mazugi mai jujjuyawar.Gabaɗaya, manyan ramukan bututun ƙarfe (mafi ƙarancin 5.6 mm) yana sauƙaƙe tafiyar resins mai ƙarfi na fiber danko.
Kyakkyawan ƙa'idar babban yatsa ga kowane injin allura shine kawai allurar kashi 60-70% na ƙarar.Girman harbi da yawa yana ƙara lokacin sake saiti, yayin da ƙananan girman harbi yana nufin abu ya daɗe a cikin ganga, mai yuwuwar haifar da lalacewa.
3. Yanayin sarrafawa
Dangane da batun sarrafawa, yana da mahimmanci a magance batutuwa guda biyu: yaƙe-yaƙe da raɗaɗi.Gabaɗaya, dogon fiber ƙarfafa sassa na thermoplastic suna samun ƙarancin yaƙi fiye dagajeren zaren fiberglasssassa saboda iska na Filament yana rage bambance-bambancen raguwa, amma allura gyare-gyaren sassan fiber masu tsayi har yanzu suna lalacewa, dalili ɗaya shine cewa zaruruwan suna gudana tare da daidaitawar daidaitawa, yayin haɓaka ƙarfin sashi, na iya haifar da anisotropy.Don hana yaƙe-yaƙe, za a iya amfani da madadin wuraren ƙofa ko ƙirar ɓangaren don guje wa daidaitawar fiber da yawa a cikin wuraren da ba sa buƙatar ƙarfi mai ƙarfi don jure kayan gini.
Ci gaba da amfani da dogon zaruruwa
Nasarar gyare-gyaren gyare-gyaren gyare-gyaren fiber mai tsayi yana buƙatar wasu gyare-gyare na jagororin ƙira da sigogin sarrafawa waɗanda suka dace da guduro mara ƙarfi da gajerun mahadi.Don samun mafi kyawun ƙarfin ƙarfin fiber mai tsawo (wanda ya fi tsada fiye da kayan da ba a cika ba kofiberglass yankakken strands ƙarfafasaboda babban aikin su), dole ne a bi mafi kyawun ayyuka a duk lokacin aikin.Idan dogayen zaruruwa sun karye ko kuma sun yi kuskure saboda rashin kulawa, ƙirar mutu ko saitin kayan aiki, ƙarfinsu mai ƙarfi da fa'idodin taurin zai ragu ko ma asara.
#gilashin rovings#gajeren gilashin zaruruwa#1k carbon fiber zane#gajeren zaren fiberglass#fiberglass yankakken strands ƙarfafa
Lokacin aikawa: Oktoba-21-2022