Batu 1: Gabatarwa ga matsalolin gama gari tare da raguwa yayin aiwatar da extrusion na extruder:
A cikin extrusion samar da aluminum profiles, lahani da aka fi sani da shrinkage zai bayyana a cikin Semi-ƙare samfurin bayan yankan kai da wutsiya bayan alkali etching dubawa. Abubuwan injiniyoyi na bayanan martaba na aluminum da ke ɗauke da wannan tsarin ba su cika buƙatun ba, yana haifar da haɗarin aminci.
A lokaci guda kuma, lokacin da aka samar da bayanan martaba na aluminum gami da ke fuskantar jiyya ko jujjuya aiki, kasancewar wannan lahani yana lalata ci gaban ciki na kayan, wanda zai shafi yanayin gaba da ƙarewa. A cikin lokuta masu tsanani, zai haifar da ɓoye alamomi don gogewa ko lalata kayan aikin juyawa da sauran haɗari, wannan matsala ce ta kowa a cikin samarwa. Anan, wannan labarin a taƙaice yayi nazarin dalilan da suka haifar da raguwar bayanan martabar aluminum da hanyoyin kawar da shi.
Ma'ana 2: Rarraba raguwa a cikin bayanan martabar aluminium extrude ta hanyar extruders: shrinkage mara kyau da raguwa na shekara:
1) Ragewa mai zurfi: An kafa wani m a tsakiyar wutsiya karshen extruded profiles da sanduna. Sashin giciye yana bayyana a matsayin rami mai daɗaɗɗen gefuna ko rami mai gefuna cike da wasu ƙazanta. Hanyar madaidaiciyar mazugi ce mai siffar mazurari, ƙarshen mazurari yana fuskantar alkiblar ƙarfe. Ya fi faruwa a cikin jirgin sama guda-rami mutu extrusion, musamman a wutsiya na profiles extruded da kananan extrusion coefficients, manyan samfurin diameters, lokacin farin ciki ganuwar, ko man-babu extrusion gaskets.
2) Ragewar shekara-shekara: Ƙarshen biyu na extrusion shunt gyare-gyaren samfurin, musamman ma kai, zobba ne masu katsewa ko baka, kuma siffar jinjirinji ya fi bayyana a bangarorin biyu na layin walda. Ƙimar shekara-shekara na kowane samfurin rami yana da ma'ana.
Dalilin samuwar raguwa: Yanayin injina na samuwar raguwa shine idan matakin advection ya ƙare kuma a hankali gas ɗin extrusion ya kusanto mutuwa, extrusion yana ƙaruwa kuma yana haifar da matsa lamba dN a gefen gefen ganga na extrusion. Wannan ƙarfin tare da ƙarfin juzu'i dT Silinda, lokacin da yanayin ma'aunin ƙarfi dN Silinda ≥ dT pad ya lalace, ƙarfen da ke kusa da yankin gasket ɗin da aka fitar yana gudana baya tare da gefen zuwa tsakiyar blank, yana samar da raguwa.
Batu na uku: Menene yanayin extrusion wanda ke haifar da raguwa a cikin mai fitar da shi:
1. Extrusion ragowar kayan an bar shi gajarta sosai
2. The extrusion gasket yana da mai ko datti
3. Fushin ingot ko ulu ba shi da tsabta
4. Tsawon yanke samfurin bai bi ka'idoji ba
5. Rufin silinda extrusion ba ya jurewa
6. Gudun extrusion yana ƙaruwa ba zato ba tsammani.
Batun 4: Hanyoyi don kawar da raguwar da aka yi ta hanyar injunan extrusion na aluminum da matakan ragewa da hana samuwar raguwa:
1. Tsaya bin ka'idodin tsari don yankewa da latsa abin da ya wuce, ya ga kai da wutsiya, kiyaye rufin silinda na extrusion, hana gaskets na man fetur, rage yawan zafin jiki na aluminum sanda kafin extrusion, da amfani da musamman convex gaskets. Zaɓi madaidaiciyar tsayin abin da ya rage.
2. Abubuwan kayan aikin extrusion da sandunan aluminum ya kamata su kasance masu tsabta
3. akai-akai duba girman silinda extrusion kuma maye gurbin kayan aikin da ba su cancanta ba
4. Smooth extrusion, da extrusion gudun ya kamata a jinkirta a cikin mataki na gaba na extrusion, da kuma sauran kauri ya kamata a bar yadda ya kamata, ko kuma a yi amfani da extrusion Hanyar kara saura kayan.
Ma'ana 5: Don kawar da abin da ya faru na raguwa yadda ya kamata yayin samar da injunan extrusion na aluminium, yawan kauri na extruder shima yana buƙatar kulawa. Mai zuwa shine ma'aunin tunani don wuce gona da iri:
Extruder tonnage (T) Extrusion kauri (mm)
800T ≥15mm 800-1000T ≥18mm
1200T ≥20mm 1600T ≥25mm
2500T ≥30mm 4000T ≥45mm
May Jiang ta gyara daga MAT Aluminum
Lokacin aikawa: Agusta-14-2024
