Mu kuwotcherera kwa laser, mpweya woteteza umakhudza kupanga weld, mtundu wa weld, kuya kwa weld ndi m'lifupi weld.Nthawi zambiri, kuwomba gasi woteteza kumakhala ndi zotsatira zabwino pakuwotcherera, koma kungayambitsenso zovuta.
1. Kuwomba koyenera mu mpweya woteteza kudzateteza bwino dziwe la weld kuti lichepetse kapena kupeŵa 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 mpweya woteteza kungathe kuchepetsa chitetezo chachitsulo cha nthunzi kapena mtambo wa plasma pa laser, ndikuwonjezera mphamvu yogwiritsira ntchito laser;
5. Kuwomba koyenera kwa gasi woteteza kumatha 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 ndikuchepetsa mphamvu yamakina a weld;
3. Kusankha kutentha kwa mpweya wolakwika kungayambitse kutsekemera kwa weld (kaya kuthamanga kwake ndi kwakukulu kapena kochepa kwambiri), komanso kungayambitsenso zitsulo za weld pool kuti zisokonezedwe kwambiri ndi mphamvu yakunja, zomwe zimapangitsa kuti weld awonongeke kapena kuumba kosiyana;
4. Kusankha njira yolakwika yowomba gasi kungayambitse kulephera kwa chitetezo cha weld kapena ngakhale kwenikweni palibe chitetezo kapena kukhala ndi zotsatira zoyipa pakupanga kuwotcherera;
5. Kuwomba mu gasi wotetezera kudzakhala ndi zotsatira zina pa kuya kwa weld, makamaka pamene mbale yopyapyala imakhala yotsekemera, 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 zochita za laser, amene akhoza bwino kuchepetsa mapangidwe plasma mtambo motero kuonjezera mphamvu magwiritsidwe mlingo wa laser.Nitrogen akhoza kuchita ndi aloyi zotayidwa ndi mpweya zitsulo pa kutentha kwina, kupanga nitride, amene zidzasintha brittleness wa weld, ndi kuchepetsa kulimba, amene adzakhala ndi zotsatira kwambiri chokhwima pa katundu mawotchi a olowa kuwotcherera, kotero si bwino kugwiritsa ntchito nayitrogeni kuteteza zotayidwa aloyi ndi mpweya zitsulo welds.
Nayitrogeni opangidwa ndi zochita za nayitrogeni ndi chitsulo chosapanga dzimbiri amatha kulimbitsa mphamvu ya olowa, zomwe zimathandizira kuwongolera kwamakina a weld, kotero nayitrogeni angagwiritsidwe ntchito ngati mpweya woteteza powotcherera chitsulo chosapanga dzimbiri.
2. Ar
Ar ionization mphamvu wachibale ndi osachepera, pansi zotsatira za laser ionization digiri ndi apamwamba, si kothandiza kulamulira mapangidwe plasma mtambo, akhoza mogwira magwiritsidwe laser kutulutsa zotsatira zina, koma ntchito Ar ndi otsika kwambiri, n'zovuta amachita ndi zitsulo wamba, ndipo Ar mtengo si mkulu, kuwonjezera, kachulukidwe wa Ar ndi yaikulu, n'kopindulitsa kuti kumira kwa weld dziwe losungunuka pamwamba, Ikhoza kuteteza bwino dziwe weld, kotero izo zikhoza kugwiritsidwa ntchito ngati wamba. gasi woteteza.
3. Iye
Iye ali apamwamba ionization mphamvu, pansi 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 kuwotcherera, ntchito ndipo Iye ndi otsika kwambiri, Basic sichita ndi zitsulo, ndi wabwino kuwotcherera gasi zoteteza, koma Iye ndi okwera mtengo kwambiri, mpweya sagwiritsidwa ntchito kupanga misa, ndipo Iye ntchito kafukufuku wa sayansi kapena apamwamba kwambiri mankhwala owonjezera.
Nthawi yotumiza: Sep-01-2021
