Izisombululo kwi-Shrinkage Defect kwi-Aluminium Profile Extrusion

Inqaku loku-1: Intshayelelo kwiingxaki eziqhelekileyo kunye nokuncipha ngexesha lenkqubo yokukhutshwa kwe-extruder:

Kwimveliso ye-extrusion yeeprofayili ze-aluminium, iziphene ezaziwa ngokuba yi-shrinkage ziya kubonakala kwimveliso egqityiweyo emva kokusika intloko kunye nomsila emva kokuhlolwa kwe-alkali etching. Iimpawu zemishini yeeprofayili ze-aluminium eziqulethe esi sakhiwo azihambelani neemfuno, zibeka ingozi yokhuseleko.

Ngelo xesha, xa iiprofayili ze-aluminium eziveliswayo ziphantsi konyango lomphezulu okanye ukuguqulwa kokuguqulwa, ubukho besi siphene butshabalalisa ukuqhubeka kwangaphakathi kwezinto, eziza kuchaphazela umphezulu olandelayo kunye nokugqiba. Kwiimeko ezinzulu, kuya kubangela ukuba amanqaku afihliweyo atshitshiswe okanye umonakalo kwisixhobo sokuguqula kunye nezinye iingozi, oku kuyingxaki eqhelekileyo kwimveliso. Apha, eli nqaku lihlalutya ngokufutshane izizathu zokubunjwa kweprofayili ye-aluminium shrinkage kunye neendlela zokuphelisa.

Inqaku lesi-2: Ukuhlelwa kokuncipha kwiiprofayili ze-aluminiyam ekhutshiweyo ngabakhuphayo: i-shrinkage engenanto kunye ne-annular shrinkage:

1) Ukushwabana komngxuma: Umngxuma wenziwe embindini wesiphelo somsila weeprofayili ezikhutshiweyo kunye nemivalo. Icandelo lomnqamlezo libonakala njengomngxuma onamaphethelo arhabaxa okanye umngxuma onamaphethelo azaliswe bubunye ukungcola. I-longitudinal direction i-cone efana ne-funnel, i-tip ye-funnel ijongene necala lokuhamba kwesinyithi. Iyenzeka kakhulu kwi-extrusion yenqwelomoya enomngxuma omnye, ngakumbi kumsila weeprofayili ezikhutshiweyo kunye ne-coefficients encinci ye-extrusion, iidayamitha zemveliso ezinkulu, iindonga ezishinyeneyo, okanye i-oyile-stained extrusion gaskets.

2) Ukuncipha kwe-annular: Iziphelo ezimbini ze-extrusion shunt ezibunjiweyo zemveliso, ngokukodwa intloko, ziyizindandatho ezingapheliyo okanye ii-arcs, kwaye i-crescent shape ibonakala ngakumbi kumacala omabini omgca we-welding. I-annular shrinkage yemveliso nganye yomngxuma i-symmetrical.

Isizathu sokubunjwa kwe-shrinkage: Imeko yomatshini yokubunjwa kwe-shrinkage kukuba xa i-advection stage iphela kwaye i-gasket ye-extrusion isondela ngokuthe ngcembe kwi-die, i-extrusion iyanda kwaye ivelise uxinzelelo lwe-dN kwicala lecala lombhobho we-extrusion. La mandla kunye ne-friction force cylinder ye-dT, xa imeko yokulinganisela kwamandla e-dN cylinder ≥ dT pad itshatyalalisiwe, isinyithi esijikeleze indawo ye-gasket ekhutshiweyo ihamba ngasemva ecaleni komphetho ukuya kumbindi wendawo engenanto, yenze ukushwabana.

Inqaku lesi-3: Ziziphi iimeko zokukhupha ezibangela ukuncipha kwi-extruder:

1. Imathiriyeli eshiyekileyo ye-Extrusion ishiywe imfutshane kakhulu

2. I-gasket ye-extrusion inamafutha okanye ingcolile

3. Umphezulu we-ingot okanye uboya awucocekanga

4. Ubude bokunqunyulwa kwemveliso abuhambelani nemimiselo

5. I-lining ye-extrusion cylinder ayinakunyamezela

6. Isantya se-extrusion sinyuka ngokukhawuleza.

Inqaku lesi-4: Iindlela zokuphelisa i-shrinkage eyenziwe ngoomatshini be-aluminium extrusion kunye nemilinganiselo yokunciphisa kunye nokuthintela ukubunjwa kwe-shrinkage:

1. Landela ngokungqongqo imimiselo yenkqubo yokusika kwaye ucinezele ukugqithisa, yabona intloko kunye nomsila, gcina i-lining ye-cylinder extrusion intact, ukuthintela i-oil extrusion gaskets, ukunciphisa ubushushu bentonga ye-aluminium ngaphambi kokukhutshwa, kwaye usebenzise i-gaskets ekhethekileyo ye-convex. Khetha ubude obufanelekileyo bezinto ezishiyekileyo.

2. Imiphezulu yezixhobo ze-extrusion kunye neentonga ze-aluminium kufuneka zicoceke

3. Jonga rhoqo ubungakanani be-cylinder ye-extrusion kwaye utshintshe izixhobo ezingafanelekanga

4. I-extrusion e-Smooth, i-extrusion ye-extrusion kufuneka ihlanjululwe kwinqanaba lokugqibela le-extrusion, kwaye ubuninzi obusele bufanele bushiywe ngokufanelekileyo, okanye indlela ye-extrusion yokwandisa izinto eziseleyo kufuneka isetyenziswe.

Inqaku lesi-5: Ukuze kupheliswe ngokufanelekileyo i-phenomenon ye-shrinkage ngexesha lokuveliswa kwe-aluminium profile ye-extrusion machines, ubukhulu obugqithisileyo be-extruder nabo bufuna ukuhoywa. Oku kulandelayo ngumgangatho wereferensi wobunzima obugqithileyo:

I-Extruder tonnage (T) Ubukhulu be-Extrusion (mm)

800T ≥15mm 800-1000T ≥18mm

1200T ≥20mm 1600T ≥25mm

2500T ≥30mm 4000T ≥45mm

Ihlelwe nguMay Jiang esuka kwiMAT Aluminium