1. Material Fundamentals da Karamin Tsarin Layout
1.1 Make-up da Crystallographic Stability na Alumina
(Alumina Ceramic Nozzles)
Alumina (Al ₂ O BIYU), musamman a lokacin alfa, yumbu ne gabaɗaya oxidized tare da tsari mai cike da nau'in corundum mai siffar hexagonal, samar da ban mamaki thermal kwanciyar hankali, sinadaran rashin aiki, da kuma ƙarfin injina a yanayin zafi mai tashe.
High-tsarki alumina (kullum 95– 99.9% Al ₂ O SIX) an fi so don aikace-aikacen bututun ƙarfe saboda ƙarancin gurɓataccen abun ciki, wanda ke rage raguwar iyakar hatsi kuma yana inganta juriya ga yanayin zafi da lalacewar sinadarai.
A microstructure, ciki har da lafiya, daidaitattun hatsi, an ƙera shi a lokacin sintering don rage porosity da yin amfani da kauri mafi kyau, kai tsaye yana shafar juriyar yazawar bututun ƙarfe da amincin tsari a ƙarƙashin kwararar ruwa mai saurin gudu..
Sinadaran irin su MgO yawanci ana gabatar da su a cikin jimlar adadin har zuwa hana haɓakar hatsin da ba a saba gani ba a duk lokacin da ake yin ƙwanƙwasa., tabbatar da ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun tsari suke tallafawa.
1.2 Kayayyakin Injini da Kayayyakin Zazzaɓi Masu Dace Zuwa Ingantaccen Nozzle
Abubuwan yumbu na alumina suna nuna ƙarfi na Vickers yana wucewa 1800 HV, yana mai da su juriya ga muguwar lalacewa daga ruwa mai ɗimbin yawa, sifa mai mahimmanci a aikace-aikace irin su fashewar yashi da yanke ruwan jet mara kyau.
Tare da jujjuyawar juriya na 300– 500 MPa da matsananciyar tauri 2 GPA, alumina nozzles suna adana matakan tsaro a ƙarƙashin babban matsi, yawanci jere daga 100 ku 400 MPa a cikin tsarin masana'antu.
Thermal, alumina yana riƙe da gine-ginen injiniya kamar yadda 1600 ° C, tare da rage yawan haɓakar haɓakar thermal (~ 8 × 10 ⁻ / K) wanda ke ba da fitaccen juriya ga girgiza thermal– mai mahimmanci lokacin da aka fuskanci saurin sauye-sauyen zafin jiki a duk lokacin farawa ko rufewa.
Its thermal watsin (~ 30 W/m · K) ya isa ya watsar da zafin gida ba tare da haifar da gangaren zafi wanda zai iya haifar da rarrabuwa ba, stabilizing rufi da dumi gwamnati bukatun.
2. Hanyoyin Ƙirƙira da Daidaitaccen Geometric
2.1 Hanyoyin Siffatawa da Tsaftacewa don Kera Nozzle
Samar da nozzles yumbura alumina yana farawa da tsaftataccen foda alumina, wanda aka tace daidai a cikin koren jiki yin amfani da hanyoyi kamar sanyi isostatic latsa (CIP), allura gyare-gyare, ko extrusion, ya danganta da nau'in lissafi da ake so da girman saiti.
( Alumina Ceramic Nozzles)
Cold isostatic latsa yana amfani da damuwa iri ɗaya daga duk umarnin, samar da daidaitaccen yawan wurare dabam dabam mai mahimmanci don rage lahani yayin sintering.
Ana amfani da gyare-gyaren allura don haɗaɗɗun sifofin bututun ƙarfe tare da tafurori na ciki da manyan filaye, yana ba da damar daidaiton girman girman girma da haɓakawa a cikin samarwa da yawa.
Bayan yin siffa, Ƙwayoyin kore suna gudanar da aikin jiyya na thermal mataki biyu: debinding don kawar da kwayoyin binders da sintering a yanayin zafi tsakanin 1500 ° C da 1650 ° C don cimma kauri na kusa-kusa ta hanyar yaɗuwar yanayi mai ƙarfi.
Madaidaicin kula da yanayin sintering da farashin dumama / sanyaya yana da mahimmanci don karewa daga lankwasawa, karya, ko sarrafa hatsi wanda zai iya yin haɗari ga aikin bututun ƙarfe.
2.2 Machining, Sprucing Up, da Quality Control
Post-sintering, nozzles na alumina galibi suna buƙatar daidaiton mashin ɗin don cimma matsananciyar juriya, musamman a yankin gabas inda halayen kwarara suka fi kula da gamawar farfajiyar da kuma yanayin lissafi.
Ana amfani da niƙan lu'u-lu'u da wanke-wanke don tace wuraren ciki da waje, cimma ƙimar ƙaƙƙarfan yanayi da aka jera a ƙasa 0.1 µm, wanda ke rage juriya na wurare dabam dabam kuma yana guje wa tarawa kaɗan.
The Orifice, yawanci bambanta daga 0.3 ku 3.0 mm a girman, dole ne ya kasance ba tare da micro-cracks da chamfers don tabbatar da zazzagewar laminar da tsarin fesa na yau da kullun.
Hanyoyin gwaji marasa lalacewa kamar na'urar gani da ido, Ƙimar X-ray, kuma ana amfani da gwajin hawan keke na matsa lamba don tabbatar da kwanciyar hankali na gine-gine da daidaiton aiki kafin turawa.
Geometries na musamman, wanda ya kunshi convergent-divergent (daga Laval) bayanan martaba don wurare dabam dabam na supersonic ko nau'ikan ramuka da yawa don tsarin fesa masu bi, ana samar da su sosai ta amfani da sabbin kayan aiki da ƙira da ke taimaka wa kwamfuta (CAD)-kore samarwa.
3. Fa'idodi Masu Aiki Akan Madadin Kayayyakin Nozzles
3.1 Babban Rushewa da Juriya na Lalata
Sabanin karfe (misali, tungsten carbide, bakin karfe) ko polymer nozzles, alumina yana nuna juriya mafi girma ga lalacewa, musamman a wuraren da suka hada da yashi silica, garnet, ko daban-daban da wuya abrasives amfani a saman shiri da yankan.
Ƙarfe nozzles na lalacewa da sauri saboda ƙananan fracturing da nakasar filastik, yana buƙatar maye gurbin akai-akai, yayin da nozzles na alumina na iya wucewa 3– 5 sau da yawa ya fi tsayi, da matuƙar rage ƙarancin lokaci da farashin aiki.
Bugu da kari, alumina ba shi da iyaka ga yawancin acid, antacid, da kaushi, sanya shi dacewa ga sinadarai splashing, etching, da hanyoyin tsaftacewa inda abubuwan ƙarfe zasu yi tsatsa ko cutar da ruwa.
Wannan tsaro na sinadarai yana da mahimmanci musamman a masana'antar semiconductor, sarrafa magunguna, da aikace-aikacen kayan abinci masu buƙatar babban tsarki.
3.2 Thermal and Electrical Insulation Properties
Alumina babban juriya na lantarki (> 10 ¹⁴ Ω · santimita) ya sa ya dace don amfani da tsarin suturar lantarki na lantarki, inda yake guje wa ɗimbin farashi kuma yana ba da garantin sarrafa fenti iri ɗaya.
Ƙarfinsa na rufin zafi yana ba da izinin hanya mai aminci a cikin yanayin fesa yanayin zafi mai zafi, kamar fantsarar wuta ko tsabtace zafi, ba tare da canja wurin zafi zuwa abubuwa masu iyaka ba.
Sabanin karafa, alumina baya haifar da amsawar sarkar da ba'a so a cikin rafukan ruwa masu amsawa, kiyaye mutuncin m mafita.
4. Aikace-aikacen Masana'antu da Tasirin Fasaha
4.1 Ayyuka a Abrasive Jet Machining da Surface Jiyya
Alumina yumbu nozzles suna da mahimmanci a cikin m tsarin iska mai ƙarfi don kawar da lalata, cire fenti, da surface area texturing a auto, sararin samaniya, da sassan gine-gine.
Ƙarfinsu don kiyaye diamita na yau da kullun akan tsawaita amfani yana tabbatar da daidaitaccen ƙimar ƙimar da tasiri, kai tsaye tasiri surface area gama saman inganci da kuma hanya repeatability.
A abrasive waterjet yankan, alumina maida hankali tubes kai ga high-matsi ruwa-abrasive mix, riƙe da ƙarfi da ƙarfi waɗanda za su lalata samfuran taushi da sauri.
4.2 Yi amfani a cikin Ƙarfafa masana'antu, Fesa Shafi, da Kula da Ruwa
A cikin thermal spray tsarin, irin su plasma da flame splashing, alumina nozzles kai tsaye high-zazzabi iskar gas kwarara da narkakkar barbashi uwa substrates, samun daga thermal shock juriya da girma tsaro.
Hakanan ana amfani da su cikin daidaiton feshin nozzles don sinadarai na noma, inkjet tsarin, da gas atomization, inda juriya na lalacewa ke tabbatar da daidaiton aikace-aikacen dorewa.
A cikin 3D bugu, musamman a cikin dauri jetting da samfurin extrusion, nozzles na alumina suna ba da babban foda ko fastoci masu ɗanɗano tare da ɗan toshewa ko lalacewa.
Aikace-aikace masu tasowa sun ƙunshi tsarin microfluidic da na'urorin lab-on-a-chip, inda sassan alumina miniaturized ke amfani da sturdiness da biocompatibility.
A sake fasalin, alumina yumbu nozzles sun tsaya don muhimmiyar hanyar tsallake-tsallake na kimiyyar kayan aiki da injiniyan masana'antu.
Haɗin ƙarfi nasu na ban mamaki, thermal tsaro, kuma juriya na sinadarai yana ba da damar yin aiki amintacce a cikin ƴan mafi ƙarancin saitunan sarrafa ruwa.
Kamar yadda hanyoyin kasuwanci ke matsawa zuwa mafi girman damuwa, mafi kyawun juriya, da kuma tsawon lokacin warwarewa, alumina yumbu na ci gaba da saita ma'auni don ƙarfi, high-daidaici kwarara iko sassa.
5. Mai sayarwa
Abubuwan da aka bayar na Alumina Technology Co., Ltd., Ltd mayar da hankali kan bincike da haɓakawa, samarwa da tallace-tallace na aluminum oxide foda, aluminum oxide kayayyakin, aluminum oxide crucible, da dai sauransu., hidima da kayan lantarki, tukwane, sinadarai da sauran masana'antu. Tun lokacin da aka kafa shi a 2005, kamfanin ya himmatu wajen samarwa abokan ciniki mafi kyawun kayayyaki da sabis. Idan kana neman high quality alumina al2o3, don Allah a ji daɗin tuntuɓar mu. ([email protected])
Tags:
Duk labarai da hotuna daga Intanet suke. Idan akwai wasu batutuwan haƙƙin mallaka, don Allah a tuntube mu a lokacin sharewa.
A tambaye mu