Izici Zokushisela Zezinto Ezivamile Zensimbi [Insimbi Yekhabhoni]

Ukushisela nge-laser kufaneleka ukushisela izinto ezahlukahlukene. Ubuningi bamandla aphezulu kanye nesivinini esikhulu sokushisela kwenza indawo yokushisela nge-laser kanye nendawo ethintekile ekushiseni ibe yincane kakhulu. Ukwakheka kwamakhemikhali kwe-weld kungalungiswa ngokuya ngezidingo ezahlukene zesakhiwo se-weld, futhi ukusebenza kahle kwe-weld kungatholakala ngokulawula izimo zokushisela.

Insimbi yekhabhoni

Insimbi ekhabhoni ephansi kanye nensimbi e-alloy ephansi zinekhono elihle lokushisela, kodwa uma usebenzisa ukushisela nge-laser, okuqukethwe kwekhabhoni kwezinto (okulingana nekhabhoni C) akufanele kube ngaphezu kuka-0.25%.

Ifomula yokubala yokulingana kwekhabhoni:

C=C%+Mn/6%+Ni/15%+Cr/13%+Cu/13%+Mo/4%

Ezintweni ezilingana nekhabhoni ezingaphezu kuka-0.3%, ukuthambekela kokuqhekeka okubandayo kokushisela kuzokwanda. Uma ucabangela ukuncishiswa okuthile kwe-weld ekwakhiweni kuyasiza ekunciphiseni ukucindezeleka okusele kanye nokuthambekela kokuqhekeka endaweni yokushisela kanye nendawo ethintekile ukushisa. Lapho izinto ezilingana nekhabhoni ezingaphezu kuka-0.3% kanye nezinto ezilingana nekhabhoni ezingaphansi kuka-0.3% zihlanganiswa ndawonye, ​​i-bias weld inenzuzo yokunciphisa ukuguqulwa kwe-martensite nokunciphisa ukukhiqizwa kwemifantu. Lapho okulingana nekhabhoni kwezinto kungaphezu kuka-0.3%, ukunciphisa isivinini sokucima kunganciphisa nokuthambekela kokuqhekeka.

Insimbi egayiwe, ngoba izinga lokushisa lokuhwamuka kwe-zinc (903℃) liphansi kakhulu kunezinga lokuncibilika kwensimbi (1535℃), ukuhwamuka kwe-zinc enqubweni yokushisela kubangela izikhala ezinkulu ku-weld, ngakho-ke kunzima ukusebenzisa i-laser welding, ikakhulukazi i-welding engena ngaphakathi. Manje kunezivivinyo zokusetha igebe elingu-0.1mm phakathi kwezinto ezingenhla nezingezansi ukuze kukhishwe umhwamuko we-zinc esikhaleni. Kodwa kunzima ukusebenzisa i-clearance ekukhiqizweni kwangempela.

Okuqukethwe kwe-sulfur ne-phosphorus kunomthelela othile emfantwini wokushisela. Insimbi enokuqukethwe kwe-sulfur okungaphezu kuka-0.04% noma okuqukethwe kwe-phosphorus okungaphezu kuka-0.04% ivame ukuqhekeka ngesikhathi sokushisela nge-laser.

Ubuso bensimbi yekhabhoni ngenxa yokuqukethwe kwayo kwekhabhoni buphezulu, kulula ukukhiqiza imifantu yokuqina kanye nemifantu ku-ungqimba lwekhabhoni, ngokuvamile alufaneleki ukushisela nge-laser.