Makhalidwe Owotcherera a Zipangizo Zachitsulo Zambale [Chitsulo cha kaboni]

Kuwotcherera kwa laser ndikoyenera kuwotcherera zinthu zosiyanasiyana. Mphamvu zambiri za laser komanso liwiro lalikulu la kuwotcherera zimapangitsa kuti wotchi ya laser ndi malo omwe akhudzidwa ndi kutentha zikhale zochepa kwambiri. Kapangidwe ka mankhwala ka wotchiyo kakhoza kusinthidwa malinga ndi zofunikira zosiyanasiyana za kapangidwe ka wotchiyo, ndipo magwiridwe antchito abwino kwambiri a wotchiyo angapezeke powongolera momwe wotchiyo imagwirira ntchito.

Chitsulo cha kaboni

Chitsulo chopanda mpweya woipa ndi chitsulo chopanda mpweya woipa zimakhala ndi mphamvu yabwino yothira zitsulo, koma mukamagwiritsa ntchito laser welding, kuchuluka kwa mpweya m'zinthuzo (carbon equivalent C) sikuyenera kupitirira 0.25%.

Fomula yowerengera ya kaboni yofanana:

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

Pazinthu zomwe zili ndi kaboni wofanana ndi 0.3%, chizolowezi cha ming'alu yozizira yowotcherera chidzawonjezeka. Poganizira kuchepa kwina kwa weld mu kapangidwe kake kumathandiza kuchepetsa kupsinjika kotsalira ndi chizolowezi cha ming'alu mu weld ndi malo omwe kutentha kumakhudza. Pamene zinthu zomwe zili ndi kaboni wofanana ndi woposa 0.3% ndi zinthu zomwe zili ndi kaboni wofanana ndi wochepera 0.3% zilumikizidwa pamodzi, weld ya bias ndi yothandiza kuchepetsa kusintha kwa martensite ndikuchepetsa kupanga ming'alu. Pamene kaboni wofanana ndi chinthucho uli woposa 0.3%, kuchepetsa liwiro lozimitsa kungachepetsenso chizolowezi cha ming'alu.

Chitsulo chopangidwa ndi galvanized, chifukwa kutentha kwa nthunzi ya zinc (903℃) kumakhala kotsika kwambiri kuposa kutentha kwa chitsulo (1535℃), kusungunuka kwa zinc mu njira yolumikizira kumayambitsa ma pores akuluakulu mu weld, kotero zimakhala zovuta kugwiritsa ntchito welding ya laser, makamaka welding yolowera mkati. Tsopano pali zoyeserera zokhazikitsa mpata wa 0.1mm pakati pa zipangizo zapamwamba ndi zapansi kuti zitulutse nthunzi ya zinc kuchokera pampata. Koma n'zovuta kugwiritsa ntchito malo otseguka popanga zenizeni.

Kuchuluka kwa sulfure ndi phosphorous kumakhudza kwambiri ming'alu yolumikizira. Chitsulo chokhala ndi sulfure yoposa 0.04% kapena phosphorous yoposa 0.04% chimasweka mosavuta panthawi yolumikizira laser.

Pamwamba pa chitsulo cha kaboni chifukwa cha kuchuluka kwa kaboni pamwamba pake ndi wokwera, ndikosavuta kupanga ming'alu ndi ming'alu yolimba mumpweya wosanjikiza, nthawi zambiri si woyenera kuwotcherera ndi laser.