Cov dej- cov phaj txias siv cov kev sib txhuam txhuam cov txheej txheem vuam, uas ua rau kev tsim cov dej channel ntau dua, thiab kev ntseeg siab ntawm lub foob zoo dua. Nyob rau tib lub sijhawm, nws tuaj yeem kho nrog ib qho nyuaj anode nto.
Kev sib txhuam txhuam vuam yog ib qho khoom siv-theem kev sib txuas txoj kev nyob rau hauv qhov kev txiav txim ntawm txhua yam quab yuam thiab kev sib txhuam kub. Nyob rau hauv kev sib txhuam do vuam, lub cylindrical stirring lub taub hau nrog ib tug tshwj xeeb lub xub pwg nyom thiab rab koob protrusion yog tig thiab maj mam muab tso rau hauv lub workpiece yuav tsum tau welded. Kev sib txhuam shear tsis kam ntawm lub taub hau nplawm thiab cov khoom siv welded generates kev sib txhuam kub, uas ua rau thaj tsam ntawm lub taub hau stirring Cov khoom yog thermally plasticized (welding kub feem ntau tsis ncav cuag lossis tshaj qhov melting point ntawm cov khoom yuav tsum tau welded). Thaum lub taub hau nplawm tig thiab txav mus rau pem hauv ntej, cov khoom siv hlau yas hloov los ntawm sab xub ntiag mus rau sab nraub qaum ntawm lub taub hau stirring thiab txav mus rau ntawm lub taub hau stirring. Nyob rau hauv kev sib xyaw ua ke ntawm kev sib txhuam, kev tsim hluav taws xob thiab kev sib tsoo thiab nias rau ntawm qhov chaw ntawm lub workpiece, ib qho kev sib txuas ntawm cov khoom sib txuas ua ke yog tsim.
Technical nta:
1. Tsis muaj fusion vuam pore defects, tsis muaj cov khoom kub hnyiab, tsis muaj thermal tawg hauv qhov vuam, thiab kev ntseeg siab tsis muaj qhov to yog ib txwm lav;
2. Tsis muaj kev sib cais ntawm cov ntsiab lus thiab cov qauv thaum lub sij hawm solidification, thiab lub microstructure ntawm vuam cheeb tsam yog isotropic tsis muaj qhov siab tshaj;
3. Cov txheej txheem vuam yog yooj yim thiab belongs rau hom vuam yam tsis muaj flux: tsis muaj hlau txhaws, tsis muaj grooves, tsis muaj pre- vuam kev kho, tsis muaj roj tiv thaiv;
4. Cov txheej txheem ua haujlwm yog ib puag ncig zoo, tsis muaj lub teeb thiab roj paug;
5. Qhov chaw vuam muaj me me shrinkage thiab me me deformation;
6. Vim yog cov khoom siv hluav taws xob siab, cov nqi ua haujlwm tam sim no siab, thiab cov neeg ua haujlwm txawj ntse yog siab.
