Mu kuwotcherera kwa laser, mpweya woteteza umakhudza kupanga weld, mtundu wa weld, kuya kwa weld ndi m'lifupi weld. Nthawi zambiri, kuwomba mpweya woteteza kumakhala ndi zotsatira zabwino pakuwotcherera, koma kungayambitsenso zovuta.
1. Kuwomba koyenera mu gasi woteteza kudzateteza bwino dziwe la weld kuti lichepetse kapena kupeweratu okosijeni;
2. Kuwomba koyenera mu gasi woteteza kumatha kuchepetsa kuphulika komwe kumapangidwa munjira yowotcherera;
3. Kuwomba kolondola mu mpweya woteteza kungapangitse kukhazikika kwa dziwe la weld kufalikira, kupanga weld kupanga yunifolomu ndi yokongola;
4. Kuwomba koyenera kwa gasi woteteza kungathe kuchepetsa chitetezo chachitsulo cha nthunzi kapena mtambo wa plasma pa laser, ndikuwonjezera mphamvu yogwiritsira ntchito laser;
5. Kuwomba koyenera kwa gasi woteteza kungathe kuchepetsa porosity ya weld.
Malingana ngati mtundu wa gasi, kutuluka kwa gasi ndi kuwomba kumasankhidwa moyenera, zotsatira zabwino zimatha kupezeka.
Komabe, kugwiritsa ntchito molakwika gasi woteteza kumatha kusokoneza kuwotcherera.
Zotsatira zake
1. Kuwombetsa molakwika kwa gasi wodzitchinjiriza kungayambitse kuwotcherera kosakwanira:
2. Kusankha mtundu wolakwika wa mpweya kungayambitse ming'alu mu weld ndi kuchepetsa makina amawotchi;
3. Kusankha mpweya wolakwika womwe ukuwomba kuphulika kungayambitse kutsekemera kwa weld (kaya kuthamanga kwake kuli kwakukulu kapena kochepa kwambiri), komanso kungayambitsenso chitsulo cha weld pool kuti chisokonezeke kwambiri ndi mphamvu yakunja, zomwe zimapangitsa kuti weld agwe kapena kuumba mosagwirizana;
4. Kusankha njira yolakwika yowomba gasi kungayambitse kulephera kwa chitetezo cha weld kapena ngakhale kusakhala ndi chitetezo kapena kuwononga mawonekedwe ake;
5. Kuwomba mu gasi wotetezera kudzakhala ndi zotsatira zina pa kuya kwa weld, makamaka pamene mbale yopyapyala ikuwotchedwa, idzachepetsa kuya kwa weld.
Mtundu wa gasi woteteza
Mipweya yodzitchinjiriza yomwe imagwiritsidwa ntchito kwambiri ndi laser ndi N2, Ar, He, yemwe mawonekedwe ake amthupi ndi mankhwala amasiyana, kotero zotsatira zake pa weld ndizosiyana.
1. N2
Mphamvu ya ionization ya N2 ndi yocheperako, yapamwamba kuposa ya Ar komanso yotsika kuposa ya Iye. The ionization digiri ya N2 ndi ambiri pansi pa zochita za laser, amene akhoza bwino kuchepetsa mapangidwe plasma mtambo motero kuonjezera mphamvu magwiritsidwe mlingo wa laser.Nitrogen angatani ndi zotayidwa aloyi ndi mpweya zitsulo pa kutentha enaake, kubala nitride, amene kusintha brittleness wa weld, ndi kuchepetsa kulimba, amene adzakhala ndi katundu olowa analimbikitsa, ndi zotsatira za mawotchi olowa, choncho zotsatira zake ndi mawotchi osagwirizana ndi mawotchi. kuteteza aluminum alloy ndi carbon steel welds.
Nayitrogeni opangidwa ndi mankhwala anachita nayitrogeni ndi zitsulo zosapanga dzimbiri akhoza kusintha mphamvu ya kuwotcherera olowa, amene adzakhala yabwino kwa kusintha kwa makina katundu wa weld, kotero nayitrogeni angagwiritsidwe ntchito ngati gasi zoteteza pamene kuwotcherera zitsulo zosapanga dzimbiri.
2. Ar
Ar ionization mphamvu wachibale ndi osachepera, pansi pa mphamvu ya laser ionization digiri ndi apamwamba, si kothandiza kulamulira mapangidwe plasma mtambo, angathe kugwiritsa ntchito laser bwino kutulutsa zotsatira zina, koma ntchito Ar ndi otsika kwambiri, n'zovuta kuchita ndi zitsulo wamba, ndi Ar mtengo si mkulu, kuwonjezera, kachulukidwe wa Ar ndi yaikulu, n'kopindulitsa kuti titetezere pamwamba pa nkhungu kuti timira. dziwe, kotero angagwiritsidwe ntchito ngati ochiritsira zoteteza mpweya.
3. Iye
Iye ali apamwamba ionization mphamvu, pansi pa zotsatira za laser ionization digiri ndi otsika, akhoza bwino kwambiri kulamulira mapangidwe plasma mtambo, laser akhoza ntchito bwino zitsulo, WeChat chiwerengero cha anthu: yaying'ono zitsulo zowotcherera, ntchito ndipo Iye ndi otsika kwambiri, zofunika sachita ndi zitsulo, ndi wabwino kuwotcherera zoteteza mpweya, koma Iye ndi okwera mtengo kwambiri, The mpweya si ntchito ndi ntchito yopangira zinthu zambiri za sayansi, kafukufuku kapena anawonjezera katundu.
Nthawi yotumiza: Sep-01-2021
