Kuphatikiza Mayankho a Porosity mu Nut Projection Welding

Porosity ndi vuto lomwe anthu ambiri amakumana nalo powotcherera mtedza, zomwe zimatsogolera ku ma welds ofooka komanso osadalirika. M'nkhaniyi, tipereka mwachidule njira zosiyanasiyana zothetsera porosity mu kuwotcherera nut projection. Pogwiritsa ntchito njirazi, ogwira ntchito amatha kuchepetsa kupezeka kwa porosity ndikuonetsetsa kuti ma welds amphamvu.

1. Kukonzekera Pamwamba: Kukonzekera bwino pamwamba ndikofunikira kuti muchepetse porosity pakuwotcherera kwa mtedza. Musanayambe kuwotcherera, ndikofunikira kuyeretsa bwino pokwerera mtedza ndi chogwirira ntchito kuti muchotse zowononga zilizonse, monga mafuta, litsiro, kapena ma oxides. Izi zitha kutheka poyeretsa zosungunulira, kutsuka mawaya, kapena kuphulitsa ndi abrasive. Malo oyera amathandizira kulowa bwino kwa weld ndikuchepetsa chiopsezo cha mapangidwe a porosity.
2. Kusankhidwa kwa Electrode: Kusankha kwa ma elekitirodi owotcherera kumatha kukhudza kwambiri mapangidwe a porosity. Ndibwino kuti mugwiritse ntchito maelekitirodi opangidwa ndi zipangizo zomwe zimakhala ndi magetsi apamwamba komanso otsika kwambiri, monga zitsulo zamkuwa kapena zamkuwa. Ma electrode awa amapereka kutentha kwabwinoko ndikuchepetsa mwayi wotsekera mpweya, kuchepetsa mapangidwe a porosity.
3. Kukhathamiritsa kwa Zowotcherera Zowotcherera: Kukhathamiritsa magawo owotcherera ndikofunikira kuti muchepetse porosity. Magawo monga kuwotcherera pakali pano, nthawi, ndi kukakamiza ziyenera kusinthidwa mosamala kuti mukwaniritse bwino kwambiri. Kusakwanira kuwotcherera pakali pano kapena kusakwanira nthawi yowotcherera kungapangitse kuti pakhale kutentha kosakwanira, zomwe zimapangitsa kuti pakhale porosity. Mosiyana ndi zimenezi, kuwotcherera kwambiri panopa kapena nthawi yaitali kuwotcherera kungachititse kutentha kwambiri, nthunzi zinthu ndi kuchititsa porosity. Kupeza bwino ndikofunikira kuti muchepetse porosity.
4. Kuteteza Gasi: Nthawi zina, kugwiritsa ntchito mpweya woteteza kungathandize kuchepetsa porosity. Mipweya yotchinga, monga argon kapena helium, imapanga malo otetezera kuzungulira malo otsekemera, kuteteza kulowetsa mpweya wa mumlengalenga umene ungapangitse porosity. Izi ndizopindulitsa makamaka powotcherera zida zowotcherera kapena m'malo omwe ali ndi zonyansa zambiri zam'mlengalenga.
5. Kusamalira Electrode: Kusamalira nthawi zonse kwa ma elekitirodi owotcherera ndikofunikira kuti tipewe porosity. M'kupita kwa nthawi, maelekitirodi amatha kuipitsidwa kapena kuvala, zomwe zimapangitsa kuti kutentha kusakhale bwino komanso kuwonjezeka kwa porosity. Ndikofunikira kuyeretsa ndi kuyang'ana maelekitirodi nthawi zonse, kuchotsa zonyansa zilizonse zomanga kapena oxidation. Kuphatikiza apo, kusintha maelekitirodi owonongeka kumatsimikizira magwiridwe antchito komanso kuchepetsa chiopsezo cha porosity.
6. Njira yowotcherera: Njira yowotcherera yoyenera imathandizira kwambiri kuchepetsa porosity. Oyendetsa awonetsetse kulumikizana bwino pakati pa nati ndi chogwirira ntchito, kukhalabe ndi mphamvu yokhazikika panthawi yowotcherera, komanso kupewa mphamvu yamagetsi yamagetsi kapena kuyenda mwachangu. Njira zowotcherera zokhazikika komanso zoyendetsedwa bwino zimathandizira kuchepetsa porosity ndikupanga ma welds apamwamba kwambiri.

Porosity mu kuwotcherera mtedza kungathe kusokoneza kukhulupirika ndi mphamvu za welds. Komabe, potsatira mayankho omwe afotokozedwa m'nkhaniyi, ogwira ntchito amatha kuchepetsa zovuta za porosity. Kukonzekera koyenera kwa pamwamba, kusankha maelekitirodi oyenerera, kukhathamiritsa zowotcherera, kugwiritsa ntchito zotchingira mpweya, kusunga ma elekitirodi, ndi kugwiritsa ntchito njira zoyenera zowotcherera ndi njira zofunika kwambiri kuti muchepetse porosity ndikukwaniritsa ma welds amphamvu komanso odalirika pakuwotcherera kwa mtedza.