Hoʻohana nui ʻia ke kila galvanized i ka hana kaʻa, nā mea hana hale, nā keʻena mālama mālama ikehu, nā mea hoʻololi, a me nā pā metala ma muli o kona kūpaʻa maikaʻi loa a me ka formability maikaʻi. Eia naʻe, i ka wā e pili ana i ke kū'ēwiliwili wahi, ʻike ʻia ke kila galvanized e like me kekahi o nā mea paʻakikī loa e weld mau.
ʻO nā pilikia maʻamau e like me ka nui o ka spatter, unstable weld nuggets, porosity, electrode sticking, a me ke ola electrode pōkole e kū pinepine ma nā laina hana. Paʻakikī pinepine nā mea welder wahi AC maʻamau i ke kaulike ʻana i ka ikaika weld a me ke kūpaʻa ma lalo o kēia mau kūlana. I ka hoʻohālikelike ʻana, ua lilo ka welder wahi MFDC (Medium Frequency DC) i mea hoʻonā maikaʻi loa no ka wili kila galvanized ma muli o kona mana ʻoi aku ka maikaʻi o kēia manawa a me ka ikaika o ka ikehu.
No ka loaʻa ʻana o nā wili paʻa paʻa, -ikaika, a haʻahaʻa{1}}ma luna o ke kila hao, ʻaʻole lawa ka hilinaʻi ʻana i nā mea hana wale nō. He mea nui ka ʻike piha ʻana i ke ʻano o ka mea, ka hoʻolālā hoʻohālikelike welding, a me ke kaʻina hana maʻamau.
No ke aha e paʻakikī ai ka ʻike ʻana i ke kila kila?
ʻO ka paʻakikī paʻakikī o ke kila galvanized mai nā ʻano kino o ka uhi zinc. ʻO kēia mau kumu ʻehā e wehewehe i ka hapa nui o ka weld i ʻike ʻia i ka hana ʻana:
- wahi paila haʻahaʻa o ka zinc
Hoʻohūhū ʻo Zinc ma kahi o 907 degere, ʻoiai hoʻoheheʻe ke kila ma luna o 1450 degere. I ka wā o ka wiliwili, hoʻoheheʻe ʻia ka zinc ma mua o ka hoʻoheheʻe ʻana o ke kila. Inā ʻaʻole hiki i ka uahu zinc ke pakele me ka maʻalahi, hoʻoulu ia i ka spatter ikaika a me ka porosity kūloko.
- ʻO ka hana wela wela kiʻekiʻe a me ke kūpaʻa haʻahaʻa uila o ka papa zinc
Hoʻopili ka zinc coating i ka wela mai ka wahi hoʻoheheʻe, ʻoi aku ka paʻakikī o ka hoʻokaʻawale ʻana i ka ikehu ma ka ʻili faying. Ke alakaʻi pinepine nei kēia i nā nuggets weld nāwaliwali a i ʻole like ʻole.
- Hoʻomaʻalili wikiwiki o ka weld nugget
Hoʻoikaika ʻo Zinc i ka hoʻoheheʻe ʻana i ka wela, e hoʻoikaika i ka nugget ma mua o ka ulu piha ʻana, e hōʻemi ana i ka ikaika mechanical.
- ʻO ka hoʻohaumia electrode koʻikoʻi
Hoʻopili maʻalahi ka uahu Zinc i ka piko electrode, e hoʻokau i ka hoʻokele i kēia manawa paʻa ʻole, pipili electrode, a me ka lole pinepine. I nā hale hana he nui, hiki ke hoʻopōkole ʻia ke ola electrode e 40-60% i ka wā e kuʻi ana i nā mea galvanized.
Me ka ʻole o ke kaʻina hana kūpono, hiki ke maʻalahi ka helu defect o galvanized steel spot welding i ka 8%-15%, e pili ana i ka huahana a me ka hilinaʻi o ka huahana.
No ke aha maiMFDC Spot WeldersHana ʻoi aku ka maikaʻi ma luna o ka hao hao (Hoʻohālikelike ʻikepili)
ʻO ke kumu ʻoi aku ka maikaʻi o nā welders wahi MFDC ma mua o nā welders AC maʻamau e waiho nei i kā lākoukiʻekiʻe -aweawe puka, ʻaʻohe ʻano holo kaʻa-a, a pololei loa. Akaka loa na pomaikai ke hoohalikeia ma ka aoao.
| 'ikamu |
AC Spot Welder |
MFDC Spot Welder | Ka hopena ma ka hao hao |
| Ka pinepine puka
|
50/60 Hz | 800–2000 Hz | ʻO ke alapine kiʻekiʻe=hoʻomehana mau |
| ʻano nalu o kēia manawa
|
ʻAle kino | Kokoke- nalu huinaha | Hoʻokumu nugget paʻa hou aʻe |
| Kea ole
|
maopopo | Aneane aohe | Hoʻopau i ka hoʻopau wela |
| Hana wela
|
lalo | 15–25% kiʻekiʻe | E emi ka wela ma o ka zinc |
| Pono ka mana o kēia manawa
|
±8–10% | ±1–2% | ʻOi aku ka maikaʻi o ka kūlike |
| Ka hoʻomalu pāpaʻi
|
Awelika | 30–50% liʻiliʻi i ka spatter
|
Maʻemaʻe weld helehelena |
| Hoʻopono hoʻopono
|
kaupalena | maikaʻi loa | Kūpono no nā laina hana EV & pākaukau |
I ka pōkole:
ʻO ka hui pū ʻana o ke alapine kiʻekiʻe, ke au mau, a me ka mana pololei e hiki ai i ka welder wahi MFDC ke hoʻoponopono pololei i nā wahi ʻeha nui ʻekolu o ka wili kila hao -sptter, nawaliwali nuggets, a me ka like ole.
ʻO ke kumu kumu o nā ʻāpana welding: "Ka wehe ʻana i ka Zinc - Hoʻokumu Nugget - Solidification"
ʻO ke kuhi hewa maʻamau i nā hale hana he nui wale nō ka hoʻonui ʻana i ke au o ka welding i ka maikaʻi ʻole o ke kila weld. ʻO ka ʻoiaʻiʻo, alakaʻi pinepine kēia i ka spatter kaumaha, ʻoi aku ka wikiwiki o ka lole electrode, a ʻoi aku ka maikaʻi o ke kūpaʻa. ʻO ka pilikia maoli ʻaʻole ka huina o ka ikehu ponoʻī, akā pehea ka hoʻokuʻu ʻia ʻana o kēlā ikehu i ka manawa.
ʻO ke kaʻina hana hoʻoheheʻe maikaʻi maoli no ke kila puʻupaʻa e hahai ana i kahi loina wela ʻekolu -pae:
ʻO ka pae mua - Hoʻomalu ʻia ka zinc vaporization
ʻO ka hoʻokomo wela haʻahaʻa i hui pū ʻia me ka ikaika electrode kūpono e hiki ai i ka papa zinc ke hoʻoheheʻe a pakele ma ke ʻano kaohi.
Ke kahua waena - Hoʻokumu ʻia ka nugget kila wikiwiki
Hoʻokumu ka ikehu paʻa i ka nugget hoʻoheheʻe paʻa i ke kila kumu.
ʻO ka pae hope - He manawa paʻa kūpono no ka paʻa
ʻO ke kaomi paʻa lōʻihi e hōʻoiaʻiʻo i ke ʻano nugget paʻa i ka wā hoʻoluʻu.
No ka mānoanoa o ka pepa galvanized o 0.5–1.5 mm, ʻo nā hoʻololi i manaʻo ʻia e hoʻohālikelike ʻia me ke kila māmā he mau:
- Hoʻemi ʻia ka manawa welding e 20-30%
- Hoʻemi ʻia ka manawa welding e 10-20%
- Hoʻonui ka manawa paʻa e 15-25%
ʻO ke kūlana o ka ʻili ka mea nui like. Hiki i nā ʻāpana ʻaila, nā uhi hoʻoheheʻe ʻia, a i ʻole nā electrodes i hoʻohaumia nui ʻia ke hōʻole loa i nā hoʻonohonoho hoʻonohonoho pono.
Loaʻa ka -lōʻihi o ke kaʻina hana i ka hoʻokele welding standardized
ʻOiai me nā lako wiliwili wahi MFDC, ʻike mau nā hale hana i nā loli maikaʻi ma waena o nā neʻe a i ʻole nā hui hana. I ka hapanui o nā hihia, ʻaʻole ʻo ke kumu kumu no ka pono o nā lako, akā ʻo ka nele o ke kaʻina hana maʻamau.
- ʻO ka mea mua, pono e hoʻololi i nā ʻāpana kuʻi mai ka "operator experience" i nā puka makani paʻa. Pono nā ʻano mānoanoa pepa like ʻole a me nā ʻano panina zinc i nā pae hoʻohālikelike i wehewehe pono ʻole ʻia.
- ʻO ka lua, pono e mālama ʻia nā electrodes ma ke ʻano he mea hoʻohana ʻia me kahi hoʻolālā pōʻaiapuni o ke ola ma mua o ka hoʻololi ʻia ʻana ma hope o ka pau ʻole. ʻO ka hoʻohaumia ʻana i ka maikaʻi o ka weld ma mua o ka ʻike ʻana o nā electrodes "pōʻino."
- ʻO ka hope loa, ʻo ka nānā mua ʻana-a me ka nānā ʻana i ka -kaʻina hana i ka pale ʻoi loa i ka hāʻule ʻana o ka pūʻulu. ʻO ka hoʻāʻo huki, ka nānā ʻana i ka nui o ka nugget, a me ka mana SPC e kōkua i ka ʻike ʻana i ka neʻe ʻana o nā ʻāpana, ke kūlana electrode, a i ʻole ka uhi ʻana i nā mea ma mua o ka laha ʻana o nā hemahema.
I ka hopena:
ʻAʻole hiki ke hoʻokō ʻia ka hoʻoheheʻe ʻia ʻana o ke kila galvanized e ka mīkini hoʻokahi, akā ma kahi ʻōnaehana piha e hoʻohui i nā ʻāpana, electrodes, a me ka mana maikaʻi.
Ka hopena
He mea paʻakikī ke wiliwili ʻia ke kila puʻupaʻa no ka mea e mahuka koke ka zinc, hoʻolaha wikiwiki i ka wela, e hōʻemi i ka puka makani hana nugget, a hoʻohaumia i nā electrodes i ka wela kiʻekiʻe. ʻO kēia mau hiʻohiʻona he mea paʻa ʻole ke ʻano kuʻuna kuʻuna.
ʻO ka welder wahi MFDChana i ka puka aniani wiliwili hiki ke kaohi pono ia ma o ka puka alapine kiʻekiʻe, ka mana DC paʻa, a me ka hoʻoponopono ikehu pololei. Ke hui pū ʻia me ka mana ʻepekema ʻepekema, hoʻokele electrode kūpono, a me nā kaʻina hana maʻamau, hoʻololi ʻia ka wiliwili wahi kila galvanized mai kahi kumu kīnā nui i kahi kaʻina hana paʻa loa.
