Tsarin Kera Kayan Wuta na Microchannel (MCHEs)
Samar da MCHEs daidaitaccen tsari ne - tsari wanda ke haɗa ilimin kimiyyar abu, gyare-gyaren extrusion, da fasahar haɗa zafi, wanda aka keɓance don ƙirƙirar ƙananan tashoshi (0.1-2 mm) don ingantaccen canjin zafi. Manyan matakai sune kamar haka:
1. Aluminum Alloy Material Shiri
MCHEs da farko suna amfani da allunan aluminium (misali, 3003, 6061) saboda nauyinsu mara nauyi, babban ƙarfin zafi, da ingancin farashi{4}}.
Zaɓin kayan aiki: High - tsaftataccen ingots na aluminium ana haɗe su da abubuwa masu haɗawa (magnesium, silicon) don haɓaka ƙarfin injina da juriyar lalata, saduwa da matsayin ASTM B209 ko EN 573-3.
Gabatarwa: Ingot saman suna raguwa (ta yin amfani da masu tsabtace alkaline) kuma ana tattara su (tare da dilute nitric acid) don cire oxides, mai, ko ƙazanta{0}mahimmanci don tabbatar da ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayatarwa daga baya.
2. Microchannel Flat Tube Extrusion
Wannan matakin yana samar da "core" na MCHEs: tubes masu lebur tare da ƙananan microchannels masu kama da juna.
Saitin Extrusion: Aluminium alloy billet mai zafi (digiri 450-500) ana tura shi ta hanyar daidaitaccen mutun injiniyoyi (tare da microchannel{3}} cavities mai siffa) ta hanyar latsa ruwa. Tsarin mutuwa yana ƙayyade girman tashar kai tsaye (yawanci<1 mm for high-efficiency models) and distribution.
Daidaita Girman Girma: The extruded lebur tube ne sanyaya da sauri (ta hanyar iska ko ruwa quenching) don kula da girma da kwanciyar hankali, sa'an nan yanke zuwa da ake bukata tsawon (daga 0.5 m zuwa 6 m, dangane da aikace-aikace).
Duban inganci: Laser micrometers suna tabbatar da diamita ta tashar, kaurin bango, da kwanciyar hankali{0}}haƙuri ana sarrafa su tsakanin ±0.02 mm don gujewa rashin daidaituwar kwararar ruwa.
3. Fins Stamping & Forming
Ana ƙara fins a cikin bututun lebur don faɗaɗa wurin canja wurin zafi (maɓalli mai mahimmanci a cikin ingancin MCHE).
Tsarin Hatimi: Aluminum zanen gado (0.1-0.2 mm lokacin farin ciki) ana ciyar da su a cikin madaidaicin latsa maballin don ƙirƙirar ƙirar fin ({2}) ƙira na gama gari sun haɗa da ƙuƙumi (don haɓakar tashin iska) ko ƙwanƙarar ƙura (don ƙaranci).
Pre{0}Maganin Rufe: Ƙiƙayi na iya fuskantar jiyya a saman (misali, murfin jujjuyawar chromate) don haɓaka mannewa tare da juriyar brazing da haɓaka juriya na lalatawa.
4. Core Assembly (Tube{1}}Fin Stacking)
Filayen tubes da fins an haɗe su cikin "cibiyar musayar zafi"-asashen aiki na asali.
Tari mai Layered: Filayen bututu suna daidaita daidai gwargwado, tare da saka fin a tsakanin bututun da ke kusa don samar da sanwici{0}kamar tsari. Matsi na ɗan lokaci suna riƙe taron a wurin don hana rashin daidaituwa.
Sarrafa Gap: Ana ajiye rata tsakanin tubes da fins a<0.05 mm to ensure full contact during brazing, minimizing thermal resistance at the interface.
5. Vacuum Brazing (Thermal Joining)
Vacuum brazing shine muhimmin mataki wanda ke haɗa ƙwanƙwasa lebur da fins zuwa ɗigo -madaidaicin cibiya -ba kamar yadda ake saida kayan gargajiya ba, yana tabbatar da ƙarfin tsari da ƙarfin zafi.
Aikace-aikacen Flux: Ana fesa siriri na aluminum -silicon (Al-Si) brazing flux (narkewar maki ~577 digiri) ko kuma a tsoma shi a kan tushen da aka haɗa don hana oxidation yayin dumama.
Wutar Wuta Processing: Ana sanya ainihin a cikin tanderun injin (matsi<10⁻³ Pa) and heated to 580–620°C. At this temperature, the flux melts and flows along the tube-fin interfaces, while the aluminum base material remains solid. The vacuum environment eliminates air bubbles, ensuring uniform brazing.
Sanyi: Ana sanyaya tanderun a hankali (digiri 50-100 / awa) don rage damuwa na thermal, hana microcracks a cikin microchannels.
6. Yanke & Injin Port
Ana sarrafa abin da aka kakkafa don ƙara tashar jiragen ruwa don mashigar ruwa.
Core Yankan: Wani abin gani na CNC yana yanke ainihin zuwa girman samfurin ƙarshe (misali, 300 × 400 mm don MCHEs na injin daskarewa), tare da sanyaya da ake amfani da shi don guje wa zafi{4}} nakasar da ta haifar.
Hakowa Tashar ruwa & Taɓawa: Ana haƙa ƙarshen bututun lebur don samar da tashoshin jiragen ruwa da yawa, sannan a danna don ƙara zaren (misali, M10 ko 1/4 NPT) don haɗa layin refrigerant. Kayan aikin ɓata lokaci suna cire aske ƙarfe don hana toshewar tashoshi.
7. Gwajin Matsi & Gano Leak
MCHEs suna buƙatar tsattsauran yatsa{0}} (mahimmanci ga aikace-aikacen firiji{1} kamar AC ko firiji).
Gwajin Matsi: The core is filled with high-pressure nitrogen (1.5–2 times the design working pressure, typically 2–3 MPa) and held for 30–60 minutes. Pressure gauges monitor for drops-any loss >0.01 MPa yana nuna yabo.
Gano Leak na Helium: Don madaidaitan aikace-aikace{{0} (misali, AC mota), ana amfani da sikirin sikirin helium don gano ƙananan leaks (ƙananan hankali zuwa 1×10⁻⁹ Pa·m³/s).
8. Maganin Sama & Magani - Rufin Lalacewa (Na zaɓi)
Don MCHEs da aka yi amfani da su a cikin mahalli masu tsauri (misali, marine ko babban saitunan ɗanshi), ana amfani da ƙarin kariyar lalata:
Aikace-aikacen Rufi: Fenolic resin, epoxy, ko fluoropolymer coatings ana fesa ko electrophoreed a kan ainihin saman. Ana sarrafa kauri mai kauri a 20-50 μm don daidaita juriya na lalata da ingancin canjin zafi.
Magance: An yi gasa mai rufi a cikin digiri na 120-180 na minti 30-60 don warkar da sutura, samar da wani abu mai yawa, wanda ba zai iya jurewa ba.
9. Binciken Ƙarshe na Ƙarshe & Marufi
Cikakken Gwaji: Masu dubawa suna duba ma'auni (ta hanyar injunan ma'auni), (don lahani kamar fashe ko ragi), da yin gwaje-gwajen ingancin canjin zafi na bazuwar (ta amfani da ramin iska don auna ƙimar musayar zafi a ƙarƙashin daidaitattun yanayi).
Marufi: MCHEs masu cancanta ana nannade su da danshi{0}} film mai tabbatarwa kuma an cushe su cikin kumfa{1}}kartuna masu layi don hana lalacewa yayin sufuri.
Wannan tsari yana tabbatar da MCHEs sun cika ƙaƙƙarfan buƙatun aiki don aikace-aikace kamar firiji na kasuwanci, kwandishan mota, da tsarin HVAC{0}madaidaitan inganci, ƙaƙƙarfan ƙarfi, da aminci.
HYLITA an sanye shi da cikakken samarwa da layukan taro, cikakkun layin samar da brazing mai sarrafa kansa, da kuma cikakkun layukan gwajin leak na helium mai sarrafa kansa.
1. Cikakken Kayan Aikin Taro Mai sarrafa kansa
Cikakkun Layukan Tambarin Maɓalli na atomatik don MaɓalliSakamakon haɓaka 49% na ingantaccen inganci da haɓaka 67% a cikin ingancin wadatar abubuwan da ba daidai ba{2}.
Cikakkun Layukan Taro Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayan Kayanka ta atomatikBa da damar haɓaka 51% a cikin ingantaccen taro da haɓaka ingantaccen kwanciyar hankali zuwa 99.8%.
2. Cikakken Kayan aikin Brazing Mai sarrafa kansa
Cikakkun Layukan Ƙirƙira Mai sarrafa kansa tare da Ramin - Nau'in Tanderu na BrazingYana kaiwa zuwa haɓakar 53% cikin amincin inganci, tare da ƙimar wucewar samfuran da aka gama da su sun kai 99.7%.
Cikakkun Layukan Samar da Kayan Aikin Kayyade Mai sarrafa kansa tare da Furnace na BrazingSamun haɓaka 57% a cikin amincin inganci, tare da ƙimar wucewar samfuran da aka gama da su ya kai 99.7%.
3. Cikakken Rufe / Kayan Gwaji Mai sarrafa kansa
Cikakkun Layukan Samar da Rufin Sama Mai sarrafa kansaIsar da haɓakar 55% cikin amincin inganci, tare da ƙimar wucewar samfuran da aka gama da su ya kai 99.8%.
Cikakkun Layin Gwajin Vacuum Helium LeakKashi 100% na duk samfuran suna fuskantar gwajin leak ɗin helium, yana tabbatar da ƙimar cancantar 100% don gwajin leak helium kafin bayarwa.
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