Iziphene eziqhelekileyo kwi-Magnesium Alloy Welding

(1) Ikristale erhabaxa

I-Magnesium inendawo ephantsi yokunyibilika kunye ne-thermal conductivity ephezulu. Umthombo wokushisa we-welding ephezulu iyafuneka ngexesha le-welding. Iindawo ze-weld kunye ne-seam-seam zixhomekeke ekugqithiseni, ukukhula kweenkozo, ukuhlukana kwekristale kunye nezinye izinto, ezinciphisa ukusebenza ngokubambisana.

(2) I-oxidation kunye ne-evaporation

I-Magnesium i-oxidizing kakhulu kwaye idibanisa ngokulula ne-oxygen. Kulula ukwenza i-MgO ngexesha lenkqubo ye-welding. I-MgO ineqondo eliphezulu lokunyibilika (2 500 ℃) kunye noxinzelelo oluphezulu (3. 2 g/cm-3), kwaye kulula ukwenza iiflakes ezincinci kwi-weld. Ukufakwa kwe-slag okuqinileyo akuthinteli nje ngokunzulu ukubunjwa kwe-weld, kodwa kunciphisa ukusebenza kwe-weld. Kubushushu obuphezulu be-welding, i-magnesium inokudibanisa ngokulula kunye ne-nitrogen emoyeni ukwenza i-magnesium nitride. Ukufakwa kwe-Magnesium nitride slag kuya kubangela ukuhla kweplastiki yentsimbi ye-weld kwaye kubi nakakhulu ukusebenza ngokubambisana. Indawo yokubilisa ye-magnesium ayikho phezulu (1100 ℃) kwaye kulula ukuyikhupha phantsi kobushushu obuphezulu be-arc.

(3) Ukutshisa kunye nokuwa kweendawo ezibhityileyo

Xa udibanisa iindawo ezibhityileyo, ngenxa yendawo ephantsi yokunyibilika kwe-magnesium alloy kunye nenqanaba eliphezulu lokunyibilika kwe-magnesium oxide, ezi zimbini azidibanisi lula, nto leyo eyenza kube nzima ukujonga inkqubo yokunyibilika komthungo we-weld ngexesha le-welding. Njengoko iqondo lobushushu linyuka, umbala wedama elinyibilikisiweyo awutshintshi kakhulu, nto leyo eyenza kube lula ukutshisa nokudilika.

(4) Uxinzelelo lwe-thermal kunye nokuqhekeka

I-Magnesium kunye ne-magnesium alloys ine-coefficient ephezulu yokwanda kwe-thermal, malunga nokuphindwe kabini kwentsimbi kunye ne-1 Kabini, kulula ukubangela uxinzelelo olubalulekileyo lwe-welding kunye nokuguqulwa ngexesha lenkqubo ye-welding. I-Magnesium yenza ngokulula indawo ephantsi yokunyibilika ye-eutectic enezinto ezithile zokuxuba (ezifana ne-Cu, Al, Ni, njl.) (ezifana nobushushu be-Mg Cu eutectic ye-480 ℃, i-Mg Al eutectic ye-430 ℃, i-Mg Ni eutectic ye-508 ℃) , kunye noluhlu olubanzi lwe-brittle lokushisa kunye nokwakheka okulula kweentanda ezishushu. Uphando lufumanise ukuba xa w (Zn)>1%, yonyusa i-thermal brittleness kwaye inokukhokelela kwiintanda ze-welding. Ukongeza w (Al) ≤ 10% kwi-magnesium inokuphucula ubungakanani bengqolowa ye-weld kunye nokuphucula i-weldability. I-Magnesium alloys equlethe inani elincinci le-Th ine-weldability elungileyo kwaye akukho mkhuba wokuqhekeka.

(5) Stomata

Imingxunya yeHydrogen iveliswa ngokulula ngexesha lokuwelda kwe-magnesium, kwaye ukunyibilika kwe-hydrogen kwi-magnesium nako kuncipha kakhulu ngobushushu obuhlayo.

6