Izixazululo Zokungaphumeleli Kwe-Shrinkage ku-Aluminium Profile Extrusion

Iphuzu 1: Isingeniso sezinkinga ezivamile ngokuncipha ngesikhathi senqubo yokukhipha i-extruder:

Ekukhiqizweni kwe-extrusion yamaphrofayili e-aluminium, amaphutha ngokuvamile aziwa ngokuthi ukuncipha azovela emkhiqizweni oqedwe kancane ngemva kokusika ikhanda nomsila ngemva kokuhlolwa kwe-alkali etching. Izakhiwo zemishini zamaphrofayili e-aluminium aqukethe lesi sakhiwo azihlangabezani nezidingo, zibeka izingozi zokuphepha.

Ngesikhathi esifanayo, lapho amaphrofayili e-aluminium alloy akhiqizwayo engaphansi kokwelashwa okungaphezulu noma ukuguqulwa kokucubungula, ukuba khona kwalesi sici kubhubhisa ukuqhubeka kwangaphakathi kwezinto, okuzothinta indawo elandelayo nokuqedwa. Ezimweni ezimbi kakhulu, kuzodala ukuthi amamaki afihliwe alahlwe noma alimaze ithuluzi lokuphenduka nezinye izingozi, lokhu kuyinkinga evamile ekukhiqizeni. Lapha, lesi sihloko sihlaziya kafushane izizathu zokwakhiwa kwephrofayili ye-aluminium shrinkage kanye nezindlela zokuyiqeda.

Iphuzu lesi-2: Ukuhlelwa kokuncipha kwamaphrofayili e-aluminium ekhishwe ngama-extruder: ukuncipha okungenalutho kanye nokuncipha kwe-annular:

1) Ukushwabana okungenalutho: Okungenalutho kwakhiwa phakathi nendawo yomsila wokuphela kwamaphrofayela namabha. Ingxenye ephambanayo ibonakala njengembobo enemiphetho emangelengele noma imbobo enemiphetho egcwele okunye ukungcola. Isiqondiso se-longitudinal yi-cone emise okwefaneli, ichopho le-funnel libheke isiqondiso sokugeleza kwensimbi. Ivela kakhulu ku-extrusion yendiza enembobo eyodwa, ikakhulukazi emsileni wamaphrofayili akhishwe ngama-coefficients amancane we-extrusion, amadayamitha omkhiqizo amakhulu, izindonga eziwugqinsi, noma ama-gaskets agcotshwe ngamafutha.

2) Ukuncipha kwe-annular: Iziphetho ezimbili zomkhiqizo obunjiwe we-extrusion shunt, ikakhulukazi ikhanda, ziyizindandatho ezingaqhubeki noma ama-arcs, futhi umumo we-crescent usobala kakhulu ezinhlangothini zombili zomugqa wokushisela. I-annular shrinkage yomkhiqizo wembobo ngayinye i-symmetrical.

Isizathu sokwakheka kwe-shrinkage: Isimo semishini sokwakheka kwe-shrinkage ukuthi lapho isigaba se-advection siphela futhi i-gasket ye-extrusion isondela kancane kancane kufa, i-extrusion iyanda futhi ikhiqize i-dN yokucindezela endaweni eseceleni yombhobho we-extrusion. La mandla kanye nesilinda se-dT ye-friction force, lapho isimo sebhalansi yamandla we-dN cylinder ≥ dT pad sicekelwa phansi, insimbi etholakala eduze kwendawo ye-gasket ekhishiwe igeleza ihlehle ihambisane nomphetho iye maphakathi nendawo engenalutho, yenze ukushwabana.

Iphuzu lesi-3: Yiziphi izimo ze-extrusion ezibangela ukuncipha ku-extruder:

1. I-Extrusion residual material ishiywa imfushane kakhulu

2. I-extrusion gasket inamafutha noma ingcolile

3. Ingaphezulu le-ingot noma uboya aluhlanzekile

4. Ubude obunqunyiwe bomkhiqizo abuhambisani nemithethonqubo

5. Ulwelwesi lwesilinda esikhishwayo alubekezeleleki

6. Ijubane le-extrusion liyakhula ngokuzumayo.

Iphuzu lesi-4: Izindlela zokuqeda ukuncipha okwakhiwa imishini ye-aluminium extrusion kanye nezinyathelo zokunciphisa nokuvimbela ukwakheka kokuncipha:

1. Landela ngokuqinile imithethonqubo yenqubo yokusika nokucindezela okweqile, yabona ikhanda nomsila, gcina ulwelwesi lwe-extrusion cylinder luqinile, ukuvimbela ama-gaskets okukhipha amafutha, ukunciphisa izinga lokushisa kwenduku ye-aluminium ngaphambi kokukhishwa, futhi usebenzise ama-gaskets akhethekile e-convex. Khetha ubude obunengqondo bezinto ezisele.

2. Indawo yamathuluzi e-extrusion nezinduku ze-aluminium kufanele zihlanzeke

3. Hlola njalo usayizi wesilinda sokukhipha bese ushintsha amathuluzi angafanelekile

4. I-extrusion ebushelelezi, isivinini se-extrusion kufanele sehliswe kancane esigabeni sakamuva se-extrusion, futhi ukushuba okusele kufanele kushiywe ngendlela efanele, noma indlela yokukhishwa yokwandisa impahla esele kufanele isetshenziswe.

Iphuzu lesi-5: Ukuze kuqedwe ngempumelelo ukwenzeka kokuncipha ngesikhathi sokukhiqizwa kwemishini ye-aluminium profile extrusion, ukushuba okweqile kwe-extruder nakho kudinga ukunakwa. Okulandelayo indinganiso yereferensi yokujiya okweqile:

I-Extruder tonnage (T) Ubukhulu bokukhipha (mm)

800T ≥15mm 800-1000T ≥18mm

1200T ≥20mm 1600T ≥25mm

2500T ≥30mm 4000T ≥45mm

Ihlelwe nguMay Jiang evela kwaMAT Aluminium