Ngokuvamile, ukuze uthole izakhiwo eziphakeme zemishini, kukhethwe izinga lokushisa eliphakeme kakhulu. Kodwa-ke, ku-alloy 6063, lapho izinga lokushisa elijwayelekile le-CRECTSION CE liphakeme kune-540 ° C, izakhiwo zemishini zephrofayili ngeke zisakhulise, futhi lapho ziphansi kune-480 ° C, amandla ashubile angahle anakwe.
If the extrusion temperature is too high, bubbles, cracks, and surface scratches and even burrs will appear on the product due to aluminum sticking to the mold. Ngakho-ke, ukuze uthole imikhiqizo enekhwalithi ephezulu ephezulu, amazinga okushisa aphansi aphansi ajwayele ukusetshenziswa.
Imishini emihle futhi iphuzu eliyisihluthulelo sokuthuthukisa ukusebenza kahle kokukhiqizwa kokukhishwa kwe-aluminium, ikakhulukazi izingcezu ezintathu ezinkulu ze-aluminium extruder, i-aluminium rod yokushisa isithando somlilo. Ngaphezu kwalokho, into ebaluleke kakhulu ukuba no-opharetha omuhle kakhulu wokukhishwa.
Ukuhlaziywa okushisayo
Amabha we-aluminium nezinduku kudingeka ukuthi afudumele ngaphambi kokukhishwa kokufinyelela emazingeni okushisa asondelene nokushisa kwe-solvus, ukuze ama-magnesium enduku ye-aluminium angancibilika futhi ageve ngokulinganayo ezintweni ze-aluminium. Lapho induku ye-aluminium ifakwa ku-extred, izinga lokushisa alishintshi okuningi.
Lapho i-extruder iqala, amandla amakhulu okuqhakaza induku akhipha impahla ethambile ye-aluminium ukuphuma emgodini we-die, oguqula izinga lokushisa, ukuze amazinga okushisa wephrofayili ekhishwe yi-solvus. Ngalesi sikhathi, ama-magnesium ancibilika futhi agobhoze, okungazinzi kakhulu.
Lapho amazinga okushisa ephakanyisiwe, akumele kube ngaphezulu kokushisa okusombile, uma kungenjalo i-aluminium nayo izoncibilika, futhi iphrofayili ayikwazi ukwakhiwa. Ukuthatha i-ally engu-6000 yochungechunge njengesibonelo, izinga lokushisa le-aluminium le-Aluminium kufanele ligcinwe phakathi kuka-400-540 ° C, mhlawumbe ngo-470-500 ° C.
Uma izinga lokushisa liphezulu kakhulu, lizodala ukudwengula, uma liphansi kakhulu, ijubane lokukhishwa lizoncishiswa, futhi iningi lokungqubuzana elikhiqizwa ngokushisa lizoguqulwa libe ukushisa, okwenza ukuthi izinga lokushisa lizoguqulwa libe yingozi. Ukukhuphuka kwezinga lokushisa kulingana nejubane lokukhishwa nokucindezelwa kwe-Depleon.
Amazinga okushisa okuphuma kufanele agcinwe phakathi kuka-550-575 ° C, okungenani ngaphezulu kwe-500-530 ° C, ngaphandle kwalokho i-magnesium ku-alluminium alloy ayikwazi ukuncibilika futhi ithinte izakhiwo zensimbi. Kepha akumele kube ngaphezulu kokushisa okuqinile, izinga lokushisa eliphakeme kakhulu lizodala ukudwengula futhi lithinte ikhwalithi ephezulu yephrofayili.
Ukushisa okuphezulu kwe-aluminium induku kufanele kulungiswe ngokuhlanganiswa nesivinini sokukhishwa ukuze umehluko wokushisa umehluko ungaphansi kokushisa kwe-solvus hhayi phezulu kunamazinga okushisa we-solvus. Ama-alloys ahlukene anamazinga okushisa ahlukile we-solvus. Isibonelo, izinga lokushisa le-solvus lama-6063 alloy lingu-498 ° C, ngenkathi lelo-6005 alloy lingu-510 ° C.
Ijubane logandaganda
Ijubane logandaganda liyinkomba ebalulekile yokusebenza kahle kokukhiqiza. Kodwa-ke, amaphrofayli ahlukene, bobunjwa, ama-alloys, osayizi, njll. Kungathinta ijubane logandaganda, ongakwazi ukujaha. Amafomu wephrofayili yephrofayili yasentshonalanga yeNtshonalanga angafinyelela ijubane logandaganda wamamitha angama-80 ngomzuzu.
Izinga le-ExtRonsion elingesinye isibonisi esibalulekile sokukhiqiza. Kukalwa ngamamilimitha ngejubane ngalinye kanye nesivinini se-extrusion extrust kuvame ukwetheliswa ukwedlula ijubane logandaganda lapho ufunda ukusebenza kahle kokukhiqiza.
Izinga lokushisa le-main libaluleke kakhulu kwikhwalithi yamaphrofayili angenhla. Izinga lokushisa le-main kufanele ligcinwe cishe ngo-426 ° C ngaphambi kokukhishwa, ngaphandle kwalokho lizogoqa kalula noma lilimaze isikhunta. Inhloso yokuqedwa "iqhwa" i-Alloying Element Maglesium, ihlanza ama-athomu we-magnesium angazinzile futhi ibavimbele ekuxazululeni, ukuze balondoloze amandla wephrofayili.
Izindlela ezintathu eziphambili ezicijile zifaka: ukupholisa komoya, ukupholisa inkungu, ukupholisa inkungu, ukupholisa ithangi lamanzi. Uhlobo lokujuluka olusetshenziswe luncike kwijubane lokukhishwa, ubukhulu kanye nezindawo ezibonakalayo ezidingekayo zephrofayili, ikakhulukazi izidingo zamandla. Uhlobo lwe-Alloy luyinkomba ephelele yobulukhuni kanye nezindawo eziningi zokunwebeka ze-alloy. Izinhlobo ze-Aluminium Alloy zichazwe ngokuningiliziwe yi-American Aluminium Association, futhi kunezifunda eziyisihlanu eziyisisekelo:
F kusho "njengoba kwenziwe".
O Kusho ukuthi "imikhiqizo eyenziwe yangenisa".
T kusho ukuthi "kuphathwe ukushisa".
Isho ukuthi okuqukethwe kube nokushisa okushisayo kuphathwe.
H ubhekisa kuma-alloys angenakushibilika wokushisa athi "abakhuthele abasebenza" noma "ubunzima buqine".
Ukushisa nesikhathi kuyizinkomba ezimbili ezidinga ukulawulwa okuqinile kokuguga kokufakelwa. Esithandweni sokuguga okufakelwa, yonke ingxenye yokushisa kufanele ibe efanayo. Yize ukuguga okuphansi kokushisa kungathuthukisa amandla amaphrofayli, isikhathi esidingekayo kuzodingeka sande ngokufanele. Ukuze uzuze izakhiwo ezibonakalayo zensimbi ezingcono kakhulu, kuyadingeka ukuthi ukhethe i-aluminium alloy efanele, ifomu layo elifanele, sebenzisa imodi efanelekile yokuguga, lawula izinga lokushisa elifanele, isivuno singenye inkomba ebalulekile yokukhiqiza Ukusebenza kahle. Akunakwenzeka ngokuthola ukufeza isivuno esingu-100%, ngoba ama-butt azonqamula lokho ngenxa yamamaki okuphina kogandaganda nezitha.
Kuhlelwe ngoMeyi Jiang kusuka ku-Mat Aluminium
Isikhathi sePosi: Jun-05-2023
