Kugadzira Maitiro eMicrochannel Coils (MCHEs)

Kugadzirwa kweMCHEs inzira chaiyo-inofambiswa inobatanidza zvinhu zvesainzi, extrusion molding, uye thermal joining technologies, zvakagadzirirwa kugadzira akanyanya-machaneti madiki anoyerera (0.1–2 mm) kuitira kutamisa kupisa kwakanaka. Matanho akakosha ndeaya:

1. Aluminium Alloy Material Kugadzirira

MCHEs anonyanya kushandisa aruminiyamu alloys (eg, 3003, 6061) nekuda kwekureruka kwawo, high conductivity yemafuta, uye mutengo-kushanda.

Kusarudzwa kwezvinhu: Yakakwirira-kuchena kwearuminiyamu ingots inosanganiswa nealloying elements (magnesium, silicon) kuwedzera simba remuchina uye kusaita ngura, kusangana neASTM B209 kana EN 573-3 zviyero.

Preprocessing: Ingot panocheneswa (uchishandisa alkaline cleaners) uye yakanyungudutswa (ine dilute nitric acid) kubvisa okisidhi, oiri, kana tsvina-zvakakosha pakuita kuti yunifomu iwedzere uye kubhuroka kunaka gare gare.

2. Microchannel Flat Tube Extrusion

Iyi nhanho inoumba "musimboti" weMCHEs: flatchubhu ane akawanda anofanana microchannels.

Extrusion Setup: A heated aluminum alloy billet (450–500 dhigirii) inosainwa nepakati-engineered die (ine microchannel-shaped cavities) pachishandiswa hydraulic press. Iyo inofa dhizaini inosarudza zvakananga saizi yechiteshi (kazhinji<1 mm for high-efficiency models) and distribution.

Saizi Calibration: The extruded flat tube inotonhorera nokukurumidza (kuburikidza nemhepo kana mvura inodzima) kuchengetedza dimensional kugadzikana, ndokucheka kusvika pakureba kunodiwa (kubva pa 0.5 m kusvika 6 m, zvichienderana nekushandiswa).

Quality Check: Laser micrometer inosimbisa dhayamita yechaneli, ukobvu hwemadziro, uye flatness-kushivirira kunodzorwa mukati me±0.02 mm kudzivirira kuyerera kwekusaenderana.

3. Fins Stamping & Forming

Mafinhi anowedzerwa kune akafuratira machubhu kuti awedzere kupisa kwekupisa nzvimbo (chinhu chakakosha muMCHE kunyatsoshanda).

Stamping Process: Mashizha eAluminium (0.1–0.2 mm mukobvu) anopinzwa muchina chekutsikisa chidhindo chaicho kuti agadzire mafin pateni-magadzirirwo akajairika anosanganisira mafin's louvered (kuti awedzere kuyerera kwemhepo) kana marata zvimbi (kuti zvinyatsobatana).

Pre-Coating Treatment: Zvimbi zvinogona kurapwa pamusoro (eg, chromate conversion coating) kunatsa kunamatira nebrazing flux uye kuwedzera post{2}}brazing corrosion resistance.

4. Core Assembly (Tube-Fin Stacking)

Flat chubhu nezvimbi zvinounganidzwa kuita "heat exchanger core"-the basic functional unit.

Layered Stacking: Machubhu akafuratirwa anoenderana, aine zvimbi zvinopinzwa pakati pemachubhu akatarisana kuita sangweji-sechimiro. Zvisungo zvenguva pfupi zvinobata gungano panzvimbo kudzivirira kusarongeka.

Gap Control: Mukaha uripo pakati pemachubhu nezvimbi unochengeterwa<0.05 mm to ensure full contact during brazing, minimizing thermal resistance at the interface.

5. Vacuum Brazing (Thermal Joining)

Vacuum brazing inhanho yakakosha inobatanidza zvachose machubhu akati sandara uye zvimbi kuti zvipinde mumvura-yakaomarara papakati-kusiyana nemazuva ese ekusodha, inoita kuti zvigadziriswe zvisimbaradze uye zvinopisa.

Flux application: Mutsetse wakatetepa wealuminium-silicon (Al-Si) brazing flux (melting point ~577 degree) inopfapfaidzwa kana kunyikwa pacore yakaungana kudzivirira oxidation panguva yekudziya.

Vacuum Furnace Processing: Musimboti unoiswa muvira rekutsvaira (kumanikidza<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.

Kutonhora: Icho choto chinotonhorera zvishoma nezvishoma (50-100℃/ awa) kuderedza kushushikana kwekushisa, kudzivirira microcracks mu microchannels.

6. Kucheka & Port Machining

Iyo brazed core inogadziriswa kuwedzera yekubatanidza ports ye fluid inlet/outlet.

Core Cutting: A CNC saw inocheka musimboti kusvika pakukura kwechigadzirwa chekupedzisira (eg, 300×400 mm yefiriza yekutengeserana MCHEs), neinotonhorera inoshandiswa kudzivirira kupisa{4}}kukonzeresa deformation.

Port Drilling & Tapping: Mamigumo emachubhu akafuratira anodhiriwa kuti agadzire zviteshi zvakawanda, wobva wadzvanywa kuti uwedzere tambo (semuenzaniso, M10 kana 1/4 NPT) yekubatanidza mitsetse yefiriji. Deburring zvishandiso zvinobvisa simbi shavings kudzivirira machannel blockages.

7. Pressure Testing & Leak Detection

MCHEs inoda kubvinza zvakasimba-kusimba (zvakakosha pafiriji-maapuro anoita seAC kana firiji).

Pressure Test: 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 inoratidza kubuda.

Helium Leak Detection: Pakukwirisa-mashandisirwo chaiwo (eg, mota AC), helium mass spectrometry inoshandiswa kuona micro-inobuda (kunzwa kudzika kusvika 1×10⁻⁹ Pa·m³/s).

8. Surface Treatment & Anti{1}}Corrosion Coating (Optional)

KumaMCHE anoshandiswa munzvimbo dzakaoma (semuenzaniso, mugungwa kana kuti -magadzirirwo emwando wakakwirira), imwe chengetedzo yekuora inoiswa:

Coating Application: Phenolic resin, epoxy, kana fluoropolymer coatings anopfapfaidzwa kana electrophoresed pamusoro pepakati pepamusoro. Ukobvu hwekuputira hunodzorwa pa20-50 μm kuti ienzanise kushora kusagadzikana uye kupisa kwekufambisa kushanda zvakanaka.

Kurapa: Nheyo yakavharwa yakabikwa pa 120-180 dhigirii kwemaminitsi 30-60 kuti iporese kuvhara, kuumba dense, impermeable layer.

9. Final Quality Inspection & Packaging

Comprehensive Testing: Vatariri vanoongorora zviyero (kuburikidza nemashini ekuyeresa), (yekuremara kwebrazing senge makatsemuka kana flux residues), uye ita zvisina tsarukano kupisa kwekutamisa bvunzo bvunzo (uchishandisa mhepo tunnel kuyera kupisa mwero pasi pemamiriro akajairwa).

Packaging: MaMCHE akakodzera anoputirwa muunyoro{{0}pafirimu rinodzivirira uye anorongedzerwa mumakatoni ane furo{1}mumitsetse kudzivirira kukuvara panguva yekufambisa.

Maitirwo aya anoita kuti MCHEs dziwane zvinodiwa pakushanda kwezvikumbiro zvakaita sefiriji yekutengesa, mhepo yekufemesa motokari, uye masisitimu eHVAC-kuenzana, kusimba, uye kuvimbika.

HYLITA inoshongedzerwa neyakagadzirwa otomatiki uye mitsara yegungano, yakazara otomatiki brazing mitsara yekugadzira, uye yakazara otomatiki helium leak yekuyedza mitsara.

1. Fully Automated Assembly Equipment

Yakazara Otomatiki Stamping Mitsetse yeMakiyi MachikamuZvichipa kuti 49% iwedzere kuvimbika uye 67% kunatsurudza mukufambiswa kwakanaka kwezvinhu zvisiri{2}}zvakajairwa.

Yakazara Automated Yakapedzwa Chigadzirwa Gungano MitsetseKugonesa kukwidziridzwa kwe51% mukubudirira kwegungano uye kuvandudza kugadzikana kwemhando kusvika 99.8%.

2. Yakakwana Yakakwana Brazing Equipment

Fully Automated Production Lines ine Tunnel-Type Brazing FurnacesZvinotungamira kune 53% kukwira kwemhando yekuvimbika, nekupfuura mwero webrazed zvigadzirwa zvakapedzwa zvinosvika 99.7%.

Fully Automated Production Lines ine Vacuum Brazing FurnacesKuwana kuwedzera kwe57% mukuvimbika kwemhando, uye chiyero chekupasa kwebrazed chakapedzwa zvigadzirwa zvinosvika 99.7%.

3. Fully Automated Coating / Testing Equipment

Yakazara Automated Surface Coating Production LinesKuunza 55% kuvandudzwa kwemhando yekuvimbika, nechiyero chekupasa kweakavharidzirwa akapera zvigadzirwa zvinosvika 99.8%.

Yakazara Automated Vacuum Helium Leak Testing Lines100% yezvese zvigadzirwa zvinoedzwa vacuum helium kuvuza, kuve nechokwadi chegumi muzana chekufanirwa chiyero chehelium kuvuza kuyedzwa kusati kwasununguka.

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