Laser welding hi high-efficiency leh precise welding method a ni a, high-energy-density laser beam chu heat source atan a hmang a ni. Tunah chuan laser welding hi industry hrang hrangah hman a ni nasa hle a, chungte chu: electronic parts, automobile manufacturing, aerospace leh industrial manufacturing field dangte. Mahse, laser welding kalpui danah chuan chhiatna emaw, thil chhia emaw thenkhat chu a lo lang ngei ang. Heng harsatnate hi a taka hriatthiam a, a pumpelh dan tur zir chauhvin laser welding hlutna chu hman tangkai zawk theih a ni. Vawiin, Hangao Tech (Seko Machinery) Team chuan laser welding huna occouring-a harsatna lian tham thenkhat thlirletna nei turin an rawn hruai che a ni. Kan team hian automatic industrial pipe rolling leh forming machine-ah kum 20 chuang experience an nei tawh a. 100 chungchangah hian mamawh emaw, rinhlelhna emaw a awm chuan. Industrial laser welding tube mill line duct machine , kan rawn biak theih reng e.
10 common laser weld defects, an chhan leh a chinfel dan chu hetiang hi a ni:
1. Weld spatter .
Laser welding hmanga spatter siam hian weld seam-a surface quality a nghawng nasa hle a, chu chuan lens a ti bawlhhlawh thei a, a tichhia thei bawk. A tlangpuiin a performance chu: Laser welding zawh hnuah chuan material emaw workpiece emaw chunglamah metal particle tam tak a lo lang a, chu chu material emaw workpiece chunglamah a innghat a ni.
Splashing chhan:
Processed material emaw workpiece chunglam emaw chu tihfai a ni lo va, oil stain emaw pollutants emaw a awm a, a nih loh leh chu material ngei pawh a inthlak danglam vang a ni thei bawk.
Chhanna dik:
A. Laser welding hmain tihfai tur thil emaw, hnathawh tur emaw ngaihtuah hmasa phawt ang che.
B. Splash hi power density nen a inzawm tlat a ni. Welding energy hman tlem chuan spatter a ti tlem thei.
2. Crack .
Laser welding chhunzawm zel avanga crack siam chhuah te hi thermal crack an ni ber a, chu chu crystal crack leh liquefaction crack te an ni.
A crack chhan:
A chhan ber chu weld a solidified vek loh hmaa a tlahniam lutuk vang a ni.
Chhanna dik:
Wire filling leh preheating ang chi measures hian crack a tihziaawm emaw a ti bo thei emaw a ni.
3. Stoma .
Weld seam chunglama pores te hi laser welding-a chhiatna awlsam tak a ni.
Porosity awm chhan:
A. Laser welding molten pool chu a thuk a, a tawi a, a cooling speed pawh a rang hle bawk. Liquid molten pool-a gas lo chhuak hian overflow hun a nei lo va, chu chuan awlsam takin pores siamnaah a hruai lut a ni.
B. Weld seam chunglam chu tihfai a ni lo va, a nih loh leh galvanized sheet-a zinc vapor chu a bo vek bawk.
Chhanna dik:
Weld hmain workpiece chunglam leh weld chunglam chu tifai la, chu chuan zinc chu a lum chuan a volatilization a ti tha ang. Chu bakah, a blowing direction chuan air holes siam chhuahna a nghawng bawk ang.
4. Undercut .
Undercut refers to: Welding seam hi base metal nen a inzawm tha lo a, groove a awm a, a thuk zawng chu 0.5mm aia tam a ni a, a sei zawng zawng chu weld sei zawng 10% aia tam a ni a, acceptance standard-in a mamawh sei zawng aiin a lian zawk bawk.
Undercut chhan:
A. Welding speed hi a rang lutuk a, weld chhunga liquid metal chu a hnung lamah khur te tak te hnung lamah a awm leh dawn lo a, weld sir lehlamah undercut a siam dawn a ni.
B. Joint assembly gap a tam lutuk chuan joint filling-a molten metal chu a tlahniam a, undercutting pawh a awm awlsam hle.
C. Laser welding tawp lamah chuan energy drop time a rang lutuk chuan a khur te tak te chu a chim a awlsam a, chu chuan local undercut a thlen bawk ang.
Chhanna dik:
A. Laser welding machine-a processing power leh speed matching control dan tur control.
B. Inspection-a weld hmuhchhuah undercut chu acceptance standard-a thil mamawh phuhruk turin polish, tihfai leh siamthat theih a ni.
5. Weld a pungkhawm .
Weld seam chu a overfilled tih a chiang a, weld seam pawh a fill laiin a sang lutuk.
Weld accumulation awm chhan:
Wire feeding speed a rang lutuk emaw welding speed pawh welding laiin a slow lutuk.
Chhanna dik:
Welding speed tihsan emaw wire feeding speed tihhniam emaw, laser power tihtlem emaw a ni thei.
6. Welding lama inthlak danglamna .
Weld metal chu joint structure lai takah a solidify dawn lo.
Hetiang dinhmun hi a chhan:
Welding laiin a awmna dik lo, emaw filling hun dik lo welding hun leh welding wire alignment te pawh a awm thei bawk.
Chhanna dik:
Welding position chu siamrem la, a nih loh leh repair welding hun leh welding wire awmna hmun, lamp awmna, welding wire leh welding seam awmna hmun chu siamrem rawh.
7. Weld seam depression .
Weld sinking tih hian weld metal surface chu a depress tih phenomenon a kawk a ni.
Weld sinking awm chhan:
Brazing lai hian solder joint center a tha lo hle. Light spot lairil chu a hnuai lam plate bulah a awm a, weld seam lairil atang chuan a kal a, chu chuan base metal thenkhat chu a ti hmin a ni.
Chhanna dik:
Light filament chu a inmil tur a ni.
8. Weld siam tha lo .
Weld siam hat loh chuan: weld ripple ha lo, weld inang lo, weld leh base metal inkara inthlak danglamna inang lo, weld ha lo, leh weld inang lo tak tak te a huam a ni.
Hetiang dinhmun hi a chhan chu:
Weld seam chu brazed a nih chuan wire feeding chu a nghet lo va, a nih loh leh light chu a chhunzawm zel lo.
Chhanna dik:
Device stability a siam tha thei.
9. Welding .
Weld bead hian: Weld trajectory a inthlak nasa chuan weld bead emaw uneven forming emaw chu corner-ah a lang awlsam hle.
A chhan:
Seam track hi a danglam nasa hle a, zirtirna pawh a inang lo hle.
Chhanna dik:
Parameter tha ber ber hnuaiah weld la, corners te chu a inzawm tlat theih nan angle of view kha siamrem rawh.
10. Surface slag te pawh a tel ve .
Surface slag inclusions hian hetiang hian a sawi: Welding process chhung hian pawn lam atanga kan hmuh theih skin slag inclusions te hi layer inkar ah a lang tlangpui.
Reason Surface slag telh a nih dan thlirletna:
A. Multi-layer multi-pass welding lai hian interlayer coating chu a fai lo va; emaw, weld layer hmasa ber surface chu a smooth lo emaw, weldment surface chuan a mamawh a tlin lo emaw a ni thei bawk.
B. Welding hman dan dik lo, welding input energy hniam leh welding speed chak lutuk te.
Chhanna dik:
A. Welding current leh welding speed tling tak thlang rawh. Interlayer coating chu multi-layer multi-pass welding lai hian tihfai tur a ni.
B. Grinding Weld seam chu a chung lamah slag telh a nih chuan a tul chuan siamthat.
